JSP, Tomcat, JDBC, Projects, Example, Program » Struts http://www.easywayserver.com/blog Just another WordPress weblog Sat, 04 Jun 2011 05:32:48 +0000 http://wordpress.org/?v=2.8 en hourly 1 Building a User Registration Application http://www.easywayserver.com/blog/building-a-user-registration-application/ http://www.easywayserver.com/blog/building-a-user-registration-application/#comments Sun, 05 Dec 2010 08:11:59 +0000 admin http://www.easywayserver.com/blog/?p=598

User Registration is basic need of any web application. This tutorial will give you a rough idea to create user sign in application. This user registration application can be easily integrated with any existing old application. User Registration is developed on Struts framework and follow MVC pattern. Application is containing three packages actions, model and util. actions package contains all those class which are action class of struts and formbean actionform classes. Model package contain all those classes which are used for logical part and business part. Util package contain only those classes to give helping to application, e.g. Database connection classes, closing object classes and properties file.

Steps to Create user Registration application

UserRegisterForm.java

package com.register.actions;

import org.apache.struts.validator.ValidatorForm;

public class UserRegisterForm extends ValidatorForm{

    private static final long serialVersionUID = 1L;

    private String emailid;
    private String password;
    private String cpassword;
    private String firstname;
    private String lastname;
    private String gender;
    private String submitError;

    public String getSubmitError() {
        return submitError;
    }
    public void setSubmitError(String submitError) {
        this.submitError = submitError;
    }
    public String getPassword() {
        return password;
    }
    public void setPassword(String password) {
        this.password = password;
    }
    public String getEmailid() {
        return emailid;
    }
    public void setEmailid(String emailid) {
        this.emailid = emailid;
    }
    public String getCpassword() {
        return cpassword;
    }
    public void setCpassword(String cpassword) {
        this.cpassword = cpassword;
    }
    public String getFirstname() {
        return firstname;
    }
    public void setFirstname(String firstname) {
        this.firstname = firstname;
    }
    public String getLastname() {
        return lastname;
    }
    public void setLastname(String lastname) {
        this.lastname = lastname;
    }
    public String getGender() {
        return gender;
    }
    public void setGender(String gender) {
        this.gender = gender;
    }
}

UserRegistrationAction.java

package com.register.actions;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.apache.struts.action.Action;
import org.apache.struts.action.ActionForm;
import org.apache.struts.action.ActionForward;
import org.apache.struts.action.ActionMapping;
import org.apache.struts.action.ActionMessage;
import org.apache.struts.action.ActionMessages;

import com.register.model.UserRegistration;

public class UserRegistrationAction extends Action {

    public ActionForward execute(ActionMapping mapping, ActionForm form,
            HttpServletRequest request, HttpServletResponse response)
            throws Exception {

        boolean action_perform = false;
        String action_target;

        UserRegistration u = new UserRegistration();

        ActionMessages errors_mesg = new ActionMessages();

        UserRegisterForm uf = (UserRegisterForm) form;

        if (form != null) {
            u.setEmail(uf.getEmailid());
            u.setPassword(uf.getPassword());
            u.setFirstName(uf.getFirstname());
            u.setLastName(uf.getLastname());
            u.setGender(uf.getGender());
            action_perform = u.newuserregistration();

            String sError=u.getDbError();
            if(sError.equalsIgnoreCase("error"))
            {
                errors_mesg.add("submitError",
                    new ActionMessage("errors.user.registration.email.duplicate"));
                saveErrors(request,errors_mesg);
            }
        }

        if (action_perform == false) {
            errors_mesg.add("submitError",
                    new ActionMessage("errors.user.registration.fail"));
            saveErrors(request, errors_mesg);
            action_target = "failure";
        } else {
            errors_mesg.add("submitError",
                    new ActionMessage("errors.user.registration.success"));
            saveErrors(request, errors_mesg);
            action_target = "success";
        }

        return mapping.findForward(action_target);
    }
}

User.java

package com.register.model;

import java.io.Serializable;
import java.util.Date;

public class User implements Serializable{

    private static final long serialVersionUID = 1L;

    private int id;
    private int level;
    private String password;
    private String cpassword;
    private String forgetpassword;
    private Date lastVisit;
    private Date registrationDate;
    private String email;
    private String webSite;
    private String occupation;
    private String gender;
    private String timeZone;
    private String dateFormat;
    private int active;
    private String activationKey;
    private int deleted;
    private String firstName;
    private String lastName;
    private String ipAddress;
    private String macAddress;
    private int failLoginAttempted;
    private String dbError="";
    public String getActivationKey() {
        return activationKey;
    }
    public void setActivationKey(String activationKey) {
        this.activationKey = activationKey;
    }
    public int getActive() {
        return active;
    }
    public void setActive(int active) {
        this.active = active;
    }
    public String getDateFormat() {
        return dateFormat;
    }
    public void setDateFormat(String dateFormat) {
        this.dateFormat = dateFormat;
    }
    public int getDeleted() {
        return deleted;
    }
    public void setDeleted(int deleted) {
        this.deleted = deleted;
    }
    public String getEmail() {
        return email;
    }
    public void setEmail(String email) {
        this.email = email;
    }
    public int getFailLoginAttempted() {
        return failLoginAttempted;
    }
    public void setFailLoginAttempted(int failLoginAttempted) {
        this.failLoginAttempted = failLoginAttempted;
    }
    public String getFirstName() {
        return firstName;
    }
    public void setFirstName(String firstName) {
        this.firstName = firstName;
    }
    public String getGender() {
        return gender;
    }
    public void setGender(String gender) {
        this.gender = gender;
    }
    public int getId() {
        return id;
    }
    public void setId(int id) {
        this.id = id;
    }
    public String getIpAddress() {
        return ipAddress;
    }
    public void setIpAddress(String ipAddress) {
        this.ipAddress = ipAddress;
    }
    public String getLastName() {
        return lastName;
    }
    public void setLastName(String lastName) {
        this.lastName = lastName;
    }
    public Date getLastVisit() {
        return lastVisit;
    }
    public void setLastVisit(Date lastVisit) {
        this.lastVisit = lastVisit;
    }
    public int getLevel() {
        return level;
    }
    public void setLevel(int level) {
        this.level = level;
    }
    public String getMacAddress() {
        return macAddress;
    }
    public void setMacAddress(String macAddress) {
        this.macAddress = macAddress;
    }
    public String getOccupation() {
        return occupation;
    }
    public void setOccupation(String occupation) {
        this.occupation = occupation;
    }
    public String getPassword() {
        return password;
    }
    public void setPassword(String password) {
        this.password = password;
    }
    public Date getRegistrationDate() {
        return registrationDate;
    }
    public void setRegistrationDate(Date registrationDate) {
        this.registrationDate = registrationDate;
    }
    public String getTimeZone() {
        return timeZone;
    }
    public void setTimeZone(String timeZone) {
        this.timeZone = timeZone;
    }
    public String getWebSite() {
        return webSite;
    }
    public void setWebSite(String webSite) {
        this.webSite = webSite;
    }
    public String getForgetpassword() {
        return forgetpassword;
    }
    public void setForgetpassword(String forgetpassword) {
        this.forgetpassword = forgetpassword;
    }
    public String getCpassword() {
        return cpassword;
    }
    public void setCpassword(String cpassword) {
        this.cpassword = cpassword;
    }
    public String getDbError() {
        return dbError;
    }
    public void setDbError(String dbError) {
        this.dbError = dbError;
    }

}

UserRegistration.java

package com.register.model;

import java.sql.Connection;
import java.sql.PreparedStatement;

import com.register.util.ConnectionUtils;
import com.register.util.DbUtils;

public class UserRegistration extends User{

    private static final long serialVersionUID = 1L;

    public boolean newuserregistration() throws Exception
    {
        PreparedStatement psUserRegistration = null;
        String sqlUserRegistration = null;

        boolean isRegistered = false;

        Connection conn = ConnectionUtils.getConnection();

        sqlUserRegistration = "insert into user_master(sEmail, sPassword, sFirstName," +
                              " sLastName, cGender, iUserType, sCreatedDate, cStatus)" +
                              " values(?,md5(?),?,?,?,1,sysdate(),'A')";

        try{
            psUserRegistration = conn.prepareStatement(sqlUserRegistration);
            psUserRegistration.setString(1, this.getEmail());
            psUserRegistration.setString(2, this.getPassword());
            psUserRegistration.setString(3, this.getFirstName());
            psUserRegistration.setString(4, this.getLastName());
            psUserRegistration.setString(5, this.getGender());
            psUserRegistration.executeUpdate();

            isRegistered=true;
        }
        catch(Exception e)
        {
            String errorMessage=e.getMessage();
            e.printStackTrace();
            if(errorMessage.indexOf("Duplicate entry")>=0)
            {
                this.setDbError("error");
            }
            isRegistered=false;
            e.printStackTrace();
        }
        DbUtils.close(psUserRegistration, conn);

        return isRegistered;
    }
}

ConnectionUtils.java

package com.register.util;

import java.sql.Connection;
import java.sql.DriverManager;

import org.apache.struts.util.MessageResources;

public class ConnectionUtils {

    private static MessageResources messages
     = MessageResources.getMessageResources("com.register.util.ApplicationResources");
    private static String USER_NAME_DB=messages.getMessage("db.user");
    private static String USER_PASSWORD_DB=messages.getMessage("db.password");
    private static String DB_NAME=messages.getMessage("db.dbname");
    private static String HOST_NAME=messages.getMessage("db.host");

    static{
          try {
                 Class.forName("com.mysql.jdbc.Driver").newInstance();
          } catch (Exception ex) {
          }
    }

    public static Connection getConnection() throws Exception
    {
           return getDBConnection();
    }

     public static Connection getDBConnection() throws Exception
      {
          Connection conn = null;
          String URL="jdbc:mysql://"+HOST_NAME+":3306/"+DB_NAME;
          try{
              conn = DriverManager.getConnection(URL,USER_NAME_DB, USER_PASSWORD_DB);
          }
          catch(Exception e)
          {
              e.printStackTrace();
          }

          return conn;
      }
}

DbUtils.java

package com.register.util;

import java.sql.Connection;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement;

public class DbUtils {

    public static void close(ResultSet rs, Statement stm)
    {
        if (rs != null) {
            try {
                rs.close();
            }
            catch (Exception e) { }
        }

        if (stm != null) {
            try {
                stm.close();
            }
            catch (Exception e) { }
        }
    }

    public static void close(ResultSet rs, Statement stm, Connection conn)
    {
        if (rs != null) {
            try {
                rs.close();
            }
            catch (Exception e) { }
        }

        if (stm != null) {
            try {
                stm.close();
            }
            catch (Exception e) { }
        }

        if (conn != null) {
            try {
                conn.close();
            }
            catch (SQLException e) { }
        }
    }

    public static void close(PreparedStatement ps, Connection conn)
    {
        if (ps != null) {
            try {
                ps.close();
            }
            catch (Exception e) { }
        }

        if (conn != null) {
            try {
                conn.close();
            }
            catch (SQLException e) { }
        }
    }

    public static void close(ResultSet rs)
    {
        if (rs != null) {
            try {
                rs.close();
            }
            catch (Exception e) { }
        }
    }

    public static void close(Statement stm)
    {
        if (stm != null) {
            try {
                stm.close();
            }
            catch (SQLException e) { }
        }
    }

    public static void close(Connection conn)
    {
        if (conn != null) {
            try {
                conn.close();
            }
            catch (SQLException e) { }
        }
    }
}

struts-config.xml file is used for struts configuration. This xml file contains all details of application in struts form value action mapping

struts-config.xml

<!DOCTYPE struts-config PUBLIC  "-//Apache Software Foundation//DTD Struts Configuration 1.3//EN"
          "http://struts.apache.org/dtds/struts-config_1_3.dtd">

    <struts-config>

        <form-beans>
            <form-bean name="registerform" type="com.register.actions.UserRegisterForm"/>
        </form-beans>

        <action-mappings>
            <action
                path="/doRegister"
                type="com.register.actions.UserRegistrationAction"
                name="registerform"
                scope="request"
                validate="true"
                input="input">
                <forward name="input" path="/index.jsp"/>
                <forward name="success" path="/welcome.jsp"/>
                <forward name="failure" path="/index.jsp"/>
            </action>

        </action-mappings>

        <controller inputForward="true" />
        <message-resources parameter="com.register.util.ApplicationResources"/>
        <plug-in className="org.apache.struts.validator.ValidatorPlugIn">
        <set-property property="pathnames"
                      value="/org/apache/struts/validator/validator-rules.xml,
                              /WEB-INF/validation.xml"/>
                      <set-property property="stopOnFirstError" value="true" />
        </plug-in>
    </struts-config>

validation.xml is used for checking validate form value, if form is not validated properly it will throw error on user form.

validation.xml

<form-validation>

  <formset>
        <form name="registerform">
           <field property="emailid" depends="required,email">
            <msg name="required" key="errors.user.registration.email"/>
            <msg name="email" key="errors.user.registration.email.valid"/>
           </field>
           <field property="password" depends="required">
            <msg name="required" key="errors.user.registration.password"/>
           </field>
           <field property="cpassword" depends="required,validwhen">
            <msg name="required" key="errors.user.registration.password.confirm"/>
            <msg name="validwhen" key="errors.user.registration.password.match" />
               <var>
                  <var-name>test</var-name>
                  <var-value>(password==cpassword)</var-value>
               </var>
           </field>
           <field property="firstname" depends="required">
            <msg name="required" key="errors.user.registration.first.name"/>
           </field>
           <field property="lastname" depends="required">
            <msg name="required" key="errors.user.registration.last.name"/>
           </field>
           <field property="gender" depends="required">
            <msg name="required" key="errors.user.registration.gender"/>
           </field>
           <field property="submitError" depends="validwhen">
             <msg name="validwhen" key="errors.user.registration.fail" />
           <var>
              <var-name>test</var-name>
               <var-value>((emailid!=null) and ((password!=null) and ((cpassword!=null) and ((firstname!=null) and ((lastname!=null) and (gender!=null))))))</var-value>
           </var>
          </field>
        </form>
  </formset>

</form-validation>

ApplicationResources.properties file is used for configuration and error

ApplicationResources.properties

button.register=Register

# Database configuration setting
db.user=root
db.password=
db.host=localhost
db.dbname=reg_app

# errors

errors.user.registration.first.name=First Name cannot left empty
errors.user.registration.last.name=Last Name cannot left empty
errors.user.registration.password=Password cannot left empty
errors.user.registration.password.confirm=Confirm Password cannot left empty
errors.user.registration.password.match=Password & Confirm password is not matched
errors.user.registration.email=Email cannot left empty
errors.user.registration.email.valid=Enter Valid Email ID e.g. myemailid@gmail.com
errors.user.registration.email.duplicate=Duplicate Email Found
errors.user.registration.gender=Select Gender

errors.user.registration.fail=Error found while registration user
errors.user.registration.success=Thank you for registration

Database table user_master

CREATE TABLE `user_master` (
  `iUID` int(10) unsigned NOT NULL auto_increment,
  `sEmail` varchar(255) default NULL,
  `sPassword` varchar(45) NOT NULL,
  `sFirstName` varchar(45) default NULL,
  `sLastName` varchar(45) default NULL,
  `cGender` char(1) default NULL,
  `iUserType` int(10) unsigned default NULL,
  `sForgetPassword` varchar(45) default NULL,
  `sCreatedDate` datetime default NULL,
  `sLastLogin` datetime default NULL,
  `cStatus` char(1) default NULL,
  PRIMARY KEY  (`iUID`),
  UNIQUE KEY `sEmail` (`sEmail`)
) ENGINE=InnoDB DEFAULT CHARSET=latin1;

JSP files
index.jsp

<%@ page contentType="text/html; charset=iso-8859-1" language="java" %>
<%@ taglib uri="http://struts.apache.org/tags-bean" prefix="bean" %>
<%@ taglib uri="http://struts.apache.org/tags-html" prefix="html" %>

<html:html lang="true">
<head>
<title>User Registration Application</title>
</head>

<body>
<html:errors property="submitError"/>

<html:form action="doRegister">
        Email: <html:text property="emailid" /> <html:errors property="emailid"/><br>
        Password: <html:password property="password" /> <html:errors property="password"/><br>
        Confirm Password: <html:password property="cpassword" /> <html:errors property="cpassword"/><br>
        First Name: <html:text property="firstname" /> <html:errors property="firstname"/><br>
        Last Name: <html:text property="lastname" /> <html:errors property="lastname"/><br>
        Gender: <html:select property="gender">
        <html:option value="">Select Gender</html:option>
        <html:option value="M">Male</html:option>
        <html:option value="F">Female</html:option>
        </html:select>
        <html:errors property="gender"/><br>
        <html:submit><bean:message key="button.register"/></html:submit>
</html:form>
</body>
</html:html>

welcome.jsp

<%@ page contentType="text/html; charset=iso-8859-1" language="java" %>
<%@ taglib uri="http://struts.apache.org/tags-bean" prefix="bean" %>
<%@ taglib uri="http://struts.apache.org/tags-html" prefix="html" %>
<html>
<head>
<title>Welcome Registered successfully</title>
</head>

<body>
<html:errors property="submitError"/>
</body>
</html>

2. Deploy project in tomcat or jBoss

3. Run application in browser

Download User Registration application

]]> http://www.easywayserver.com/blog/building-a-user-registration-application/feed/ 0 Building a Login Application http://www.easywayserver.com/blog/building-a-login-application/ http://www.easywayserver.com/blog/building-a-login-application/#comments Sun, 17 Oct 2010 12:54:48 +0000 admin http://www.easywayserver.com/blog/?p=591

Most of web application today having login facilities. This tutorial is giving you a rough idea to develop login application for your application. This login application can be easily integrated with your old application. This login application is based on MVC pattern and build on struts framework. Application is containing three packages actions, model and util. actions package contains all those class which are action class of struts and formbean actionform classes. Model package contain all those classes which are used for logical part and business part. Util package contain only those classes to give helping to application, e.g. Database connection classes, closing object classes and properties file.

Steps to developing user login application

1. Create a project in eclipse

After creating a project in eclipse, now understand the flow of application.

UserAuthAction.java is action class of struts, this class authenticate user’s login and perform action according to the result. This is mainly use for user authentication.

UserAuthAction.java

package com.login.actions;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.apache.struts.action.Action;
import org.apache.struts.action.ActionForm;
import org.apache.struts.action.ActionForward;
import org.apache.struts.action.ActionMapping;
import org.apache.struts.action.ActionMessage;
import org.apache.struts.action.ActionMessages;

import com.login.model.UserLogin;

public class UserAuthAction extends Action{

    public ActionForward execute(ActionMapping mapping,
                                 ActionForm form,
                                 HttpServletRequest request,
                                 HttpServletResponse response)
    throws Exception
    {
        boolean action_perform=false;
        String action_target;

        UserLogin u = new UserLogin();

        ActionMessages errors_mesg = new ActionMessages();

        UserForm uf = (UserForm)form;

        if(form!=null){
            u.setUsername(uf.getUsername());
            u.setPassword(uf.getPassword());
            action_perform = u.doLogin();
        }
        if(action_perform==false){
            errors_mesg.add("submitError",
			                    new ActionMessage("errors.login.fail"));
            saveErrors(request,errors_mesg);

            action_target="failure";
        }
        else{
            action_target="success";
        }

        return mapping.findForward(action_target);
    }
}

UserLogin.java is logical business class, this class checks username and password in database and if matched with database and user enter value, it will throw true in Boolean value.

UserLogin.java

package com.login.model;

import java.sql.Connection;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import com.login.util.DbUtils;

import com.login.util.ConnectionUtils;

public class UserLogin extends User{

    private static final long serialVersionUID = 1L;

    public boolean doLogin() throws Exception
    {
        PreparedStatement psDoLogin = null;
        ResultSet rsDoLogin = null;
        String sqlDoLogin = null;

        boolean isLoginValidate = false;

        Connection conn = ConnectionUtils.getConnection();

        sqlDoLogin = "Select * from user_registration " +
                     "  where sUserID=? and sPassword=password(?)";

        psDoLogin = conn.prepareStatement(sqlDoLogin);
        psDoLogin.setString(1, this.getUsername());
        psDoLogin.setString(2, this.getPassword());
        rsDoLogin = psDoLogin.executeQuery();

        if(rsDoLogin.next())
        {
            isLoginValidate = true;
        }

        DbUtils.close(rsDoLogin, psDoLogin, conn);

        return isLoginValidate;
    }
}

User.java is simple pojo class

User.java

package com.login.model;

import java.io.Serializable;
import java.util.Date;

public class User implements Serializable{

    private static final long serialVersionUID = 1L;

    private int id;
    private int level;
    private String username;
    private String password;
    private Date lastVisit;
    private Date registrationDate;
    private String email;
    private String webSite;
    private String occupation;
    private String gender;
    private String timeZone;
    private String dateFormat;
    private int active;
    private String activationKey;
    private int deleted;
    private String firstName;
    private String lastName;
    private String ipAddress;
    private String macAddress;
    private int failLoginAttempted;

    public String getActivationKey() {
        return activationKey;
    }
    public void setActivationKey(String activationKey) {
        this.activationKey = activationKey;
    }
    public int getActive() {
        return active;
    }
    public void setActive(int active) {
        this.active = active;
    }
    public String getDateFormat() {
        return dateFormat;
    }
    public void setDateFormat(String dateFormat) {
        this.dateFormat = dateFormat;
    }
    public int getDeleted() {
        return deleted;
    }
    public void setDeleted(int deleted) {
        this.deleted = deleted;
    }
    public String getEmail() {
        return email;
    }
    public void setEmail(String email) {
        this.email = email;
    }
    public int getFailLoginAttempted() {
        return failLoginAttempted;
    }
    public void setFailLoginAttempted(int failLoginAttempted) {
        this.failLoginAttempted = failLoginAttempted;
    }
    public String getFirstName() {
        return firstName;
    }
    public void setFirstName(String firstName) {
        this.firstName = firstName;
    }
    public String getGender() {
        return gender;
    }
    public void setGender(String gender) {
        this.gender = gender;
    }
    public int getId() {
        return id;
    }
    public void setId(int id) {
        this.id = id;
    }
    public String getIpAddress() {
        return ipAddress;
    }
    public void setIpAddress(String ipAddress) {
        this.ipAddress = ipAddress;
    }
    public String getLastName() {
        return lastName;
    }
    public void setLastName(String lastName) {
        this.lastName = lastName;
    }
    public Date getLastVisit() {
        return lastVisit;
    }
    public void setLastVisit(Date lastVisit) {
        this.lastVisit = lastVisit;
    }
    public int getLevel() {
        return level;
    }
    public void setLevel(int level) {
        this.level = level;
    }
    public String getMacAddress() {
        return macAddress;
    }
    public void setMacAddress(String macAddress) {
        this.macAddress = macAddress;
    }
    public String getOccupation() {
        return occupation;
    }
    public void setOccupation(String occupation) {
        this.occupation = occupation;
    }
    public String getPassword() {
        return password;
    }
    public void setPassword(String password) {
        this.password = password;
    }
    public Date getRegistrationDate() {
        return registrationDate;
    }
    public void setRegistrationDate(Date registrationDate) {
        this.registrationDate = registrationDate;
    }
    public String getTimeZone() {
        return timeZone;
    }
    public void setTimeZone(String timeZone) {
        this.timeZone = timeZone;

    }
    public String getUsername() {
        return username;
    }
    public void setUsername(String username) {
        this.username = username;
    }
    public String getWebSite() {
        return webSite;
    }
    public void setWebSite(String webSite) {
        this.webSite = webSite;
    }
}

UserForm.java is ActionForm class of struts

UserForm.java

package com.login.actions;

import org.apache.struts.validator.ValidatorForm;

public class UserForm extends ValidatorForm{

    private static final long serialVersionUID = 1L;

    private String username;
    private String password;

    public String getPassword() {
        return password;
    }
    public void setPassword(String password) {
        this.password = password;
    }
    public String getUsername() {
        return username;
    }
    public void setUsername(String username) {
        this.username = username;
    }
}

ConnectionUtils.java class is used to create database connections

ConnectionUtils.java

package com.login.util;

import java.sql.Connection;
import java.sql.DriverManager;

public class ConnectionUtils {

    static{
          try {
                 Class.forName("com.mysql.jdbc.Driver").newInstance();
          } catch (Exception ex) {
          }
    }

    public static Connection getConnection() throws Exception
    {
           return getDBConnection();
    }

     public static Connection getDBConnection() throws Exception
      {
          Connection conn = null;
          String URLPath="jdbc:mysql://localhost:3306/login_app";
          String dbUser="yourUserName";
          String dbPassword="yourPassword";
          try{
            conn = DriverManager.getConnection(URLPath,dbUser, dbPassword);
          }
          catch(Exception e)
          {
              e.printStackTrace();
          }

          return conn;
      }
}

DbUtils.java class is used for to close database objects which can be resultset, prepareStatement or Connection.

DbUtils.java

package com.login.util;

import java.sql.Connection;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement;

public class DbUtils {

    public static void close(ResultSet rs, Statement stm)
    {
        if (rs != null) {
            try {
                rs.close();
            }
            catch (Exception e) { }
        }

        if (stm != null) {
            try {
                stm.close();
            }
            catch (Exception e) { }
        }
    }

    public static void close(ResultSet rs, Statement stm, Connection conn)
    {
        if (rs != null) {
            try {
                rs.close();
            }
            catch (Exception e) { }
        }

        if (stm != null) {
            try {
                stm.close();
            }
            catch (Exception e) { }
        }

        if (conn != null) {
            try {
                conn.close();
            }
            catch (SQLException e) { }
        }
    }

    public static void close(ResultSet rs)
    {
        if (rs != null) {
            try {
                rs.close();
            }
            catch (Exception e) { }
        }
    }

    public static void close(Statement stm)
    {
        if (stm != null) {
            try {
                stm.close();
            }
            catch (SQLException e) { }
        }
    }

    public static void close(Connection conn)
    {
        if (conn != null) {
            try {
                conn.close();
            }
            catch (SQLException e) { }
        }
    }
}

struts-config.xml file is used for struts configuration. This xml file contains all details of application in struts form value action mapping

struts-config.xml

<struts-config>

        <form-beans>
            <form-bean name="loginform" type="com.login.actions.UserForm"/>
        </form-beans>

        <action-mappings>
            <action
                path="/doLogin"
                type="com.login.actions.UserAuthAction"
                name="loginform"
                scope="request"
                validate="true"
                input="input">
                <forward name="input" path="/index.jsp"/>
                <forward name="success" path="/welcome.jsp"/>
                <forward name="failure" path="/index.jsp"/>
            </action>

        </action-mappings>

        <controller inputForward="true" />
        <message-resources parameter="com.login.util.ApplicationResources"/>
        <plug-in className="org.apache.struts.validator.ValidatorPlugIn">
        <set-property property="pathnames"
                      value="/org/apache/struts/validator/validator-rules.xml,
                              /WEB-INF/validation.xml"/>
                      <set-property property="stopOnFirstError" value="true" />
        </plug-in>
    </struts-config>

validation.xml is used for checking validate form value, if form is not validated properly it will throw error on user form.

validation.xml

<form-validation>

  <formset>
        <form name="loginform">
           <field property="username" depends="required">
            <msg name="required" key="errors.login.name"/>
           </field>
           <field property="password" depends="required">
            <msg name="required" key="errors.login.password"/>
           </field>
           <field property="submitError" depends="validwhen">
             <msg name="validwhen" key="errors.login.fail" />
           <var>
              <var-name>test</var-name>
              <var-value>((username!=null) and (password!=null))</var-value>
           </var>
          </field>
        </form>
  </formset>

</form-validation>

ApplicationResources.properties file is used for configuration and error

ApplicationResources.properties

button.login=Login

# errors

errors.login.fail=Incorrect login parameter
errors.login.name=Please fill name
errors.login.password=Please fill password

Database table user_registration

CREATE TABLE  `login_app`.`user_registration` (
  `id` int(10) unsigned NOT NULL auto_increment,
  `sUserID` varchar(45) NOT NULL,
  `sPassword` varchar(45) NOT NULL,
  `sFirstName` varchar(45) default NULL,
  `sLastName` varchar(45) default NULL,
  `sEmail` varchar(45) default NULL,
  `cGender` char(1) default NULL,
  `sUserGroup` varchar(45) default NULL,
  `sCreatedDate` datetime default NULL,
  `cStatus` char(1) default NULL,
  PRIMARY KEY  (`id`),
  UNIQUE KEY `sUserID` (`sUserID`),
  UNIQUE KEY `sEmail` (`sEmail`)
)

2. Deploy project in tomcat or jBoss

3. Run application in browser

4. Do Login by username admin and password admin

Download login application

]]> http://www.easywayserver.com/blog/building-a-login-application/feed/ 0 Handling and stop Duplicate Form Submissions in Struts http://www.easywayserver.com/blog/handling-and-stop-duplicate-form-submissions-in-struts/ http://www.easywayserver.com/blog/handling-and-stop-duplicate-form-submissions-in-struts/#comments Sat, 16 Oct 2010 07:39:52 +0000 admin http://www.easywayserver.com/blog/?p=587

Duplicate form submission results in saving duplicate data in database unnecessary. If you don’t want to save duplicate data in database, you need to prevent duplicate request to save in database. Action form get old request and save request object again in html form, and if user reload the page, it will save again and again in database.

Duplicate submission can be occur by refresh of page by user, pressing back button in browser, virus in user machine which resubmit form on every request.

Way to prevent duplicate request in Struts.

 1. By handling isTokenValid() method of struts.

 2. By handling clearing request object.

We are talking about clearing request object and creating new request for form.

<action
      input="input"
      path="/user_path"
      type="com.test.action.UserAction"
      name="UserFormName"
      scope="request"
      validate="true">
      <forward name="failure" path="/home.jsp" />
      <forward name="input" path="/home.jsp" />
      <forward name="success" path="/home.jsp" redirect="true" />
</action>

Use redirect true attribute when form is saved successfully in database. This will generate new request and clear previous object for that form.

If you reload page with right click option, you will find your page’s data is not saving in database, and duplicate submits is stopped in struts by simply adding a redirect attribute

]]> http://www.easywayserver.com/blog/handling-and-stop-duplicate-form-submissions-in-struts/feed/ 0 Struts iterator database fetching example http://www.easywayserver.com/blog/struts-iterator-database-fetching-example/ http://www.easywayserver.com/blog/struts-iterator-database-fetching-example/#comments Sun, 14 Mar 2010 06:55:56 +0000 admin http://www.easywayserver.com/blog/?p=526 <%@ taglib uri="http://struts.apache.org/tags-bean" prefix="bean" %> <%@ [...]]]>

Struts Iterator database fetching Example

In this struts example, we have to fetch and retrieve records from database and show on JSP page and submit to action class.

Struts tutorials will explain how to use struts in logic Iterator tag in JSP to get data from database.

1. index.jsp

<%@ page language="java" pageEncoding="ISO-8859-1"%>
<%@ taglib uri="http://struts.apache.org/tags-bean" prefix="bean" %>
<%@ taglib uri="http://struts.apache.org/tags-html" prefix="html" %>
<%@ taglib uri="http://struts.apache.org/tags-logic" prefix="logic" %>
<%@ taglib uri="http://struts.apache.org/tags-tiles" prefix="tiles" %>

<html:html>
  <head>
    <title>Struts.jsp</title>
  </head>

  <body>
  <html:form action="/searchUser">

   <logic:iterate id="loop"  name="UserForm" property="ListUser" >
       <bean:write name="loop" property="userName"/><br>
       <bean:write name="loop" property="deptName"/><br><br>
   </logic:iterate>

   </html:form>
  </body>
</html:html>

2. struts-config.xml

<form-beans>
     <form-bean name="UserForm" type="org.apache.struts.validator.DynaValidatorForm">
         <form-property name="userId" type="java.lang.Integer" />
         <form-property name="userName" type="java.lang.String" />
         <form-property name="deptName" type="java.lang.String" />
         <form-property name="ListUser" type="java.util.ArrayList" />
    </form-bean>
  </form-beans>

  <action-mappings>
        <action
            path="/searchUser"
            type="com.UserSearchAction"
            name="UserForm"
            scope="request"
            validate="false"
            input="/index.jsp">
            <forward name="success" path="/index.jsp"/>
           </action>
  </action-mappings>

3. UserSearchAction.java

package com;

import java.util.ArrayList;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.apache.struts.action.Action;
import org.apache.struts.action.ActionForm;
import org.apache.struts.action.ActionForward;
import org.apache.struts.action.ActionMapping;
import org.apache.struts.action.DynaActionForm;

public class UserSearchAction extends Action{

     public ActionForward execute(
            ActionMapping mapping,
            ActionForm form,
            HttpServletRequest request,
            HttpServletResponse response) throws Exception{

         DynaActionForm userForm = (DynaActionForm)form;

         UserList ul=new UserList();
         ArrayList ar=new ArrayList();
         ar=ul.getUser();

         userForm.set("ListUser", ar);

         return mapping.findForward("success");
     }
}

4. UserList.java

package com;

import java.util.ArrayList;

public class UserList extends User{
     public ArrayList getUser()
     {
        ArrayList<UserList> ar=new ArrayList<UserList>(); 

        UserList ul;

        for(int i=0;i<=20;i++)
        {
            ul=new UserList();
            ul.setUserId(i);
            ul.setUserName("userName"+i);
            ul.setDeptName("Dept"+i);
            ar.add(ul);
        }
        return ar;
     }
}

5. User.java

package com;

public class User {
  private int userId;
  private String userName;
  private String deptName;

    public String getDeptName() {
        return deptName;
    }
    public void setDeptName(String deptName) {
        this.deptName = deptName;
    }
    public int getUserId() {
        return userId;
    }
    public void setUserId(int userId) {
        this.userId = userId;
    }
    public String getUserName() {
        return userName;
    }
    public void setUserName(String userName) {
        this.userName = userName;
    }
}

 

Run this on web browser http://localhost:8080/struts/searchUser.do

download source code of struts Iterator

]]> http://www.easywayserver.com/blog/struts-iterator-database-fetching-example/feed/ 1 Struts2 – Submit tag example http://www.easywayserver.com/blog/struts2-submit-tag-example/ http://www.easywayserver.com/blog/struts2-submit-tag-example/#comments Tue, 26 Jan 2010 07:04:07 +0000 admin http://www.easywayserver.com/blog/?p=524 Related Posts:JavaScript – Submit is not a functionHow to Submit a Form Using JavaScriptStruts2 – Input text tag exampleMore than one form [...]]]>

Submit tag struts 2 example
Submit tag is used to Submit form to server with input form values, send data to server.

Example will show you how to use Submit tag in struts2

<s:submit key="Submit" />

]]> http://www.easywayserver.com/blog/struts2-submit-tag-example/feed/ 0 Struts2 – Password input tag example http://www.easywayserver.com/blog/struts2-password-input-tag-example/ http://www.easywayserver.com/blog/struts2-password-input-tag-example/#comments Tue, 26 Jan 2010 06:52:40 +0000 admin http://www.easywayserver.com/blog/?p=522 Related Posts:Struts2 – Input text tag examplePassword Field in HTMLStruts2 – textarea [...]]]>

Password tag struts 2 example
Password tag is used to get password input from user, send data to server. Struts2 Password tag can get hidden character input data from user in browser.

Example will show you how to use Password tag in struts2

<s:password key="txtpwd" />

]]> http://www.easywayserver.com/blog/struts2-password-input-tag-example/feed/ 0 Struts2 – textarea tag example http://www.easywayserver.com/blog/struts2-textarea-tag-example/ http://www.easywayserver.com/blog/struts2-textarea-tag-example/#comments Sun, 03 Jan 2010 14:38:53 +0000 admin http://www.easywayserver.com/blog/?p=520 Related Posts:Struts2 – Input text tag exampleStruts2 – Password input tag [...]]]>

Textarea tag struts 2 example
Textarea tag is used to get input from user, send data to server. Struts2 textarea tag can get more input data from user in browser.

Example will show you how to use textarea tag in struts2

<s:textarea key="txtArea" value="value" cols="50" rows="5" />

]]> http://www.easywayserver.com/blog/struts2-textarea-tag-example/feed/ 0 Struts2 – Input text tag example http://www.easywayserver.com/blog/struts2-input-text-tag-example/ http://www.easywayserver.com/blog/struts2-input-text-tag-example/#comments Sun, 03 Jan 2010 11:50:08 +0000 admin http://www.easywayserver.com/blog/?p=517 Related Posts:Struts2 – Password input tag exampleStruts2 – textarea tag exampleStruts2 – Submit tag exampleStruts2 – File tag exampleStruts2 – Select box tag [...]]]>

Input text tag struts 2 example
Input text tag is used to get input from user, send data to server.

Example will show you how to use Input text tag in struts2

<s:textfield key="username" />

]]> http://www.easywayserver.com/blog/struts2-input-text-tag-example/feed/ 0 Struts2 – Validation Example, Struts 2 Validation http://www.easywayserver.com/blog/struts2-validation-example-struts-2-validation/ http://www.easywayserver.com/blog/struts2-validation-example-struts-2-validation/#comments Sun, 27 Dec 2009 10:02:22 +0000 admin http://www.easywayserver.com/blog/?p=515

Struts2 Validation Example
Struts2 validation implement by xml file in struts 2. Validation is more easier to implement in struts2. We can define our rules of validation in xml file and use in jsp field. Struts2 provides more options of validation like email validation, integer range validation, form validation field, expression validation, regex validation, required validation, requiredstring validation, stringlength validation and etc.

Register jsp struts 2 application form can be validated with number of options which are shown in example.

Example will explain how to use validation in struts 2.

1. register.jsp registration form jsp

<%@ page contentType="text/html; charset=UTF-8" %>
<%@ taglib prefix="s" uri="/struts-tags" %>
<html>
<head>
    <title>Validation Struts page</title>
    <s:head/>
</head>

<body>
<s:form action="Register">
    <s:textfield key="username"/>
    <s:password key="password" />
    <s:textfield key="email" />
    <s:select headerKey="" headerValue="Select Gender"
     key="gender" list="#{'M':'Male','F':'Female'}" />
    <s:textfield key="postalcode" />
    <s:submit/>
</s:form>
</body>
</html>

2. web.xml

<?xml version="1.0" encoding="UTF-8"?>
<web-app id="WebApp_9" version="2.4" xmlns="http://java.sun.com/xml/ns/j2ee"
   xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
   xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee
    http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd">

    <display-name>Struts Blank</display-name>

    <filter>
        <filter-name>struts2</filter-name>
        <filter-class>org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter</filter-class>
    </filter>

    <filter-mapping>
        <filter-name>struts2</filter-name>
        <url-pattern>/*</url-pattern>
    </filter-mapping>

    <welcome-file-list>
        <welcome-file>index.jsp</welcome-file>
    </welcome-file-list>

</web-app>

3. register.xml

<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE struts PUBLIC
        "-//Apache Software Foundation//DTD Struts Configuration 2.0//EN"
        "http://struts.apache.org/dtds/struts-2.0.dtd">

<struts>

    <package name="register" namespace="/" extends="struts-default">

        <action name="Register" class="com.struts2.RegisterAction">
            <result name="input">/register.jsp</result>
            <result type="redirectAction">register.jsp</result>
        </action>

        <!-- Add actions here -->
    </package>
</struts>

4. struts.xml

<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE struts PUBLIC
    "-//Apache Software Foundation//DTD Struts Configuration 2.0//EN"
    "http://struts.apache.org/dtds/struts-2.0.dtd">

<struts>

    <constant name="struts.enable.DynamicMethodInvocation" value="false" />
    <constant name="struts.devMode" value="false" />

    <include file="register.xml"/>

    <!-- Add packages here -->

</struts>

5. RegisterAction.java

package com.struts2;

public class RegisterAction extends MyRegisterSupport{

    private static final long serialVersionUID = 1L;

    public String execute() throws Exception {
        return SUCCESS;
    }
}

6. MyRegisterSupport.java

package com.struts2;

import com.opensymphony.xwork2.ActionSupport;

public class MyRegisterSupport extends ActionSupport{

    private static final long serialVersionUID = 1L;

    private String username;
    private String password;
    private String email;
    private String gender;
    private String postalcode;

    public String getEmail() {
        return email;
    }
    public void setEmail(String email) {
        this.email = email;
    }
    public String getGender() {
        return gender;
    }
    public void setGender(String gender) {
        this.gender = gender;
    }

    public String getPassword() {
        return password;
    }
    public void setPassword(String password) {
        this.password = password;
    }

    public String getPostalcode() {
        return postalcode;
    }
    public void setPostalcode(String postalcode) {
        this.postalcode = postalcode;
    }
    public String getUsername() {
        return username;
    }
    public void setUsername(String username) {
        this.username = username;
    }
}

7. RegisterAction-validation.xml

<!DOCTYPE validators PUBLIC
        "-//OpenSymphony Group//XWork Validator 1.0.2//EN"
        "http://www.opensymphony.com/xwork/xwork-validator-1.0.2.dtd">

<validators>
    <field name="username">
        <field-validator type="requiredstring">
            <message key="requiredstring"/>
        </field-validator>
    </field>
    <field name="password">
        <field-validator type="requiredstring">
            <message key="requiredstring"/>
        </field-validator>
        <field-validator type="stringlength">
            <param name="minLength">6</param>
            <param name="trim">true</param>
            <message key="requiredpassword"/>
        </field-validator>
    </field>
    <field name="email">
        <field-validator type="requiredstring">
            <message key="requiredstring"/>
        </field-validator>
        <field-validator type="email">
            <message key="requiredemail"/>
        </field-validator>
    </field>
    <field name="gender">
        <field-validator type="requiredstring">
            <message key="requiredstring"/>
        </field-validator>
    </field>
    <field name="postalcode">
        <field-validator type="requiredstring">
            <message key="requiredstring"/>
        </field-validator>
        <field-validator type="regex">
            <param name="expression"><![CDATA[^\d*$]]></param>
            <message key="requiredinteger"/>
          </field-validator>
    </field>
</validators>

8. package.properties

requiredstring = ${getText(fieldName)} is required.
requiredemail = ${getText(fieldName)} is not in correct format.
requiredpassword = ${getText(fieldName)} should be more than 6 character.
requiredinteger = ${getText(fieldName)} should be numeric.
password = Password
username = User Name
email = Email Address
gender = Gender
postalcode = Postal Code

Validation failed

empty field validation

Password field length check

Integer field validation check struts2

Email field validation

download source code of struts2 validation

]]> http://www.easywayserver.com/blog/struts2-validation-example-struts-2-validation/feed/ 1 Struts2 – File tag example http://www.easywayserver.com/blog/struts2-file-tag-example/ http://www.easywayserver.com/blog/struts2-file-tag-example/#comments Sat, 26 Dec 2009 08:25:06 +0000 admin http://www.easywayserver.com/blog/struts2-file-tag-example/ Related Posts:Struts2 – Input text tag exampleStruts2 – checkbox tag example, check box exampleStruts2 – Submit tag exampleStruts2 – Password input tag exampleStruts2 – textarea tag exampleStruts2 [...]]]>

File tag struts 2 example
File tag is used to upload file to server with browsing option.

Example will show you how to use file tag in struts2

<s:file name="myFile" />

]]> http://www.easywayserver.com/blog/struts2-file-tag-example/feed/ 0