Struts2表单基本验证

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QuizAction.java

package com;import com.opensymphony.xwork2.ActionSupport;public class QuizAction extends ActionSupport {private static final long serialVersionUID = 3124124L;private String name;private int age;private String password;public String getPassword() {return password;}public void setPassword(String password) {this.password = password;}public String getName() {return name;}public void setName(String name) {this.name = name;}public int getAge() {return age;}public void setAge(int age) {this.age = age;}@Overridepublic String execute() throws Exception {return SUCCESS;}}

QuizAction-validatio.xml

<?xml version="1.0" encoding="UTF-8"?><!DOCTYPE validators PUBLIC "-//Apache Struts//XWork Validator 1.0.2//EN" "http://struts.apache.org/dtds/xwork-validator-1.0.2.dtd"><!-- 此xml的DTD声明可以到xwork包下的xwork-validator-1.0.2.dtd里面复制 --><validators> <!-- 对应Action类里面的属性 --> <field name="name">  <field-validator type="requiredstring">   <message>name is required</message>  </field-validator> </field> <field name="age">  <field-validator type="int">   <param name="min">2</param>   <param name="max">10</param>   <message>between 2 and 10 </message>  </field-validator> </field> <!--Plain validator Syntax-->  <!-- <field name="password">  <field-validator type="stringlength">   <param name="minLength">4</param>   <param name="maxLength">10</param>   <param name="trim">true</param>   <message>require between 4 and 10</message>  </field-validator> </field>  --> <!-- Field validator Syntax -->  <validator type="stringlength">   <param name="fieldName">password</param>   <param name="minLength">4</param>   <param name="maxLength">10</param>   <param name="trim">true</param>   <message>require between 4 and 10</message>  </validator></validators>

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> <package name="com" extends="struts-default">  <action name="validation" class="com.QuizAction">  <!-- input & result不能少  -->   <result name="input">/index.jsp</result>   <result name="success">/success.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" id="WebApp_ID" version="2.5">  <display-name>vvvvv</display-name>  <filter>  <filter-name>struts2</filter-name>  <filter-class>   org.apache.struts2.dispatcher.FilterDispatcher </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>

index.jsp

<%@ page language="java" pageEncoding="GB18030"%><%@taglib prefix="s" uri="/struts-tags"%><html><head>    <title>Validation - Basic</title>    <s:head/></head><body><b>What is your favorite color?</b><p/><s:form action="validation" method="post">    <s:textfield label="Name" name="name"/>    <s:textfield label="Age" name="age"/>    <s:textfield label="password" name="password"/>    <s:submit/></s:form></body></html>

success.jsp

<%@ page language="java" pageEncoding="GB18030"%><%@taglib prefix="s" uri="/struts-tags"%><html><head>  <title>validation test</title></head><body>    Your name is :<s:property value="name"/>    <br />    Your age is :<s:property value="age"/>    <br />    Your age is :<s:property value="password" />  </body></html>

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