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Struts2 – Submit tag example

admin — Tue, 26 Jan 2010 07:04:07 +0000

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" />

Struts2 – Password input tag example

admin — Tue, 26 Jan 2010 06:52:40 +0000

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" />

Struts2 – textarea tag example

admin — Sun, 03 Jan 2010 14:38:53 +0000

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" />

Struts2 – Input text tag example

admin — Sun, 03 Jan 2010 11:50:08 +0000

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" />

Struts2 – Validation Example, Struts 2 Validation

admin — Sun, 27 Dec 2009 10:02:22 +0000

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.

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 pagetitle>
    <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




    Struts Blank

    
        struts2
        org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter
    

    
        struts2
        /*
    

    
        index.jsp

3. register.xml






    

        
            /register.jsp
            register.jsp

4. struts.xml

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">6param>
            <param name="trim">trueparam>
            <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">^\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

Struts2 – File tag example

admin — Sat, 26 Dec 2009 08:25:06 +0000

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" />

Struts2 – Radio button tag example, radiobutton example

admin — Sat, 26 Dec 2009 07:30:28 +0000

Radio button struts 2 example
radio button in struts2 is stateful mean we can get default selected radio button with defining in radio button tag with value attribute. Radio button can be use with list attribute where can define value and label of the radio button.

Example will show you how to use radio button in struts2

<s:radio name="smonth" list="#{'1':'Jan','2':'Feb','3':'Mar'}" value="2" />

1. list will set radio button with value and label
2. value is attribute which set default selected value of radio button, if we set 2 value it will automatically selected Feb month radiobutton

Struts2 – checkbox tag example, check box example

admin — Sat, 26 Dec 2009 07:13:39 +0000

checkbox struts 2 example
check box in struts2 is stateful mean we can get default selected check box with defining in checkbox tag. check box use with list option where can define value and id of the checkbox option.

Example will show you how to use check box in struts2

<s:checkboxlist name="smonth" list="#{'1':'Jan','2':'Feb','3':'Mar'}" value="2" />

1. list will set checkbox with value and label
2. value is attribute which set default selected value of option in check box, if we set 2 value it will automatically selected Feb month checkbox

Struts2 – Select box tag example

admin — Sat, 26 Dec 2009 06:48:08 +0000

Select box struts 2 example
Select box in struts2 is stateful mean now we can get default selected box with defining in select tag. Select box use with list option where can define value and id of the option.

Example will show you how to use select box in struts2

<s:select headerKey="0" headerValue="Select Month"
 name="smonth" list="#{'1':'Jan','2':'Feb','3':'Mar','4':'Apr','5':'May','6':'Jun'}" 
 value="5" />

1. headerKey will set header default value
2. headerValue will set header default option
3. list will set options with value and text
4. value is attribute set default selected value of option in select box, if we set 5 value it will automatically selected May month option

Struts2 Example, Struts2 Tutorials, Struts Program

admin — Fri, 25 Dec 2009 16:34:24 +0000

Struts2 Example
Apache Struts 2 is simple framework for java MVC pattern. Struts2 is more easier and efficient than previous struts 1.x framework. It is more easier to use and implementation of struts2 based applications.

No more ActionForms in struts2 framework.

POJO Actions, No need to implement all action classes. Execute method can be use in any POJO class.

AJAX support, this struts 2 implement Ajax supports

Flexible, this struts2 is more flexible than previous struts framework.

Validation is easier to implement and more controllable in this framework.
Struts2 having separate validation xml for each action class. Validator xml automatically read by framework.

Struts-config.xml is become very simple and less code needs to write in struts.xml file.

In this struts2 example, we have login jsp page and submit to action class and validate form with validator. This is simple example of struts2 with login. If login form fails to with validation, it will return back to login form again and show error to user. Error string we can take from properties file where we define key of error.

Struts2 tutorials will explain how to use struts in login jsp and validate form.

8 steps to learn struts2

1. index.jsp login form jsp

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

<body>
<s:form action="Login">
    <s:textfield key="username_txt"/>
    <s:password key="password_txt" />
    <s:submit/>
s:form>
body>
html>

2. logged.jsp successfully after login form

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

<body>
<h1>Successfully logged in struts2h1>
body>
html>

3. web.xml




    Struts Blank

    
        struts2
        org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter
    

    
        struts2
        /*
    

    
        index.jsp

4. mypackage.xml






    

        
            /index.jsp
            /logged.jsp

5. struts.xml

6. LoginAction.java

package com.struts2;

import com.opensymphony.xwork2.ActionSupport;

public class LoginAction extends ActionSupport{

    private static final long serialVersionUID = 1L;

    public String execute() throws Exception {

        boolean errorflag = false;

        if (isInvalid(getUsername_txt()))
        {
            errorflag = true;
        }

        if(errorflag==false)
        {
            return INPUT;
        }

        return SUCCESS;
    }

    private boolean isInvalid(String value) {
            return (value != null || value.length() > 0);
    }

    private String username_txt;
    private String password_txt;

    public String getPassword_txt() {
        return password_txt;
    }
    public void setPassword_txt(String password_txt) {
        this.password_txt = password_txt;
    }
    public String getUsername_txt() {
        return username_txt;
    }
    public void setUsername_txt(String username_txt) {
        this.username_txt = username_txt;
    }
}

7. LoginAction-validation.xml

8. package.properties

requiredstring = ${getText(fieldName)} is required.
password_txt = Password
username_txt = User Name

Validation failed

File structure of Struts2

Keep file in this structure

download source code of struts2