Struts 2 XML Validation Example

RegisterSuccess.jsp

<%@page contentType="text/html" pageEncoding="UTF-8"%>
<%@taglib uri="/struts-tags" prefix="s" %>
<html>
    <body>
        <h1>Register Success</h1>
    </body>
</html>

RegisterAction.java

Here is the action class, We are using Struts in built custom validate() method and throwing addFieldError()

package net.javatips;

import com.opensymphony.xwork2.ActionSupport;

public class RegisterAction extends ActionSupport {

  
private static final long serialVersionUID = 1L;
  
private String username;
  
private Integer age;
  
private String password;

  
public String execute() {
     
return "success";
  
}

  
public String getUsername() {
     
return username;
  
}

  
public void setUsername(String username) {
     
this.username = username;
  
}

  
public Integer getAge() {
     
return age;
  
}

  
public void setAge(Integer age) {
     
this.age = age;
  
}

  
public String getPassword() {
     
return password;
  
}

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

RegisterAction-validation.xml

Our Action class name is RegisterAction, so struts2 validation.xml name must be RegisterAction-validation.xml (ie; append -validation with action class)

<!DOCTYPE validators PUBLIC "-//Apache Struts//XWork Validator 1.0.3//EN"
    "http://struts.apache.org/dtds/xwork-validator-1.0.3.dtd">
<validators>
	<field name="username">
		<field-validator type="requiredstring">
			<param name="trim">true</param>
			<message key="errors.required" />
		</field-validator>
	</field>
	<field name="age">
		<field-validator type="required">
			<message key="errors.required" />
		</field-validator>
		<field-validator type="int">
			<param name="min">1</param>
			<param name="max">100</param>
			<message key="errors.range" />
		</field-validator>
	</field>
	<field name="password">
		<field-validator type="requiredstring">
			<param name="trim">true</param>
			<message key="errors.required" />
		</field-validator>
	</field>
</validators>

RegisterAction.properties

username=UserName
age=Age
password=Password
errors.invalid=${getText(fieldName)} is invalid.
errors.required=${getText(fieldName)} is required.
errors.number=${getText(fieldName)} must be a number.
errors.range=${getText(fieldName)} is not in the range ${min} and ${max}.

struts.xml

Following is the struts 2 configuration, which will used for naviagating different page views

The name of this configuration file should be "struts.xml"

<!DOCTYPE struts PUBLIC
"-//Apache Software Foundation//DTD Struts Configuration 2.0//EN"
"http://struts.apache.org/dtds/struts-2.0.dtd">
<struts>
	<package name="default" extends="struts-default">
		<action name="register" class="net.javatips.RegisterAction">
			<result name="success">RegisterSuccess.jsp</result>
			<result name="input">Register.jsp</result>
		</action>
	</package>
</struts>

web.xml

<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
	xmlns="http://java.sun.com/xml/ns/javaee" xmlns:web="http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"
	xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"
	version="2.5">
	<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>
	<session-config>
		<session-timeout>30</session-timeout>
	</session-config>
	<welcome-file-list>
		<welcome-file>index.jsp</welcome-file>
	</welcome-file-list>
</web-app>




Previous 1 2 3 Next








Your email address will not be published. Required fields are marked *