struts2的验证入门
struts2的验证和struts1的验证相对来说简单很多，注意的是在Action类的同一级目录下加一个Action名-validation.xml文件就即可。下面是例题：
1.user.java
package com.lxitedu.validate;public class User {private String name;private String password;private int age;private String email;public String getName() {return name;}public void setName(String name) {this.name = name;}public String getPassword() {return password;}public void setPassword(String password) {this.password = password;}public int getAge() {return age;}public void setAge(int age) {this.age = age;}public String getEmail() {return email;}public void setEmail(String email) {this.email = email;}@Overridepublic String toString() {return "User ";}} 2.Action.java
package com.lxitedu.validate;import com.opensymphony.xwork2.ActionSupport;import com.opensymphony.xwork2.ModelDriven;public class Action extends ActionSupport implements ModelDriven<User> {private static final long serialVersionUID = 1L;private User user = new User();@Overridepublic String execute() throws Exception { return SUCCESS;}@Overridepublic User getModel() { return user;} public String run() throws Exception { return INPUT;}} 3.在与Action.java的同一级目录下定义一个Action-validation.xml文件
<?xml version="1.0" encoding="UTF-8"?><!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="name"><field-validator type="requiredstring"><param name="trim">true</param><message>必须输入名字</message></field-validator><field-validator type="regex"><param name="expression"><!]></param><message>您输入的用户名只能是字母和数组，且长度必须在4到25之间</message></field-validator></field><field name="password"><field-validator type="requiredstring"><param name="trim">true</param><message>必须输入密码</message></field-validator><field-validator type="regex"><param name="expression"><!]></param><message>您输入的密码只能是字母和数组，且长度必须在4到25之间</message></field-validator></field><field name="age"><field-validator type="int"><param name="min">1</param><param name="max">150</param><message>年龄必须在1到150之间</message></field-validator> </field><field name="email"><field-validator type="email"><message>输入正确的email地址</message></field-validator><field-validator type="requiredstring"><param name="trim">true</param><message>必须输入邮箱</message></field-validator></field></validators> 4.struts.xml
<action name="validate" class="com.lxitedu.validate.Action"> <result name="input">/validate.jsp</result> <result name="success">/validate.jsp</result></action> 5.validate.jsp
<%@ page language="java" contentType="text/html; charset=UTF-8"pageEncoding="UTF-8"%><%@ taglib prefix="s" uri="/struts-tags"%><!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"><html><head><title>Insert title here</title></head><body> <s:form action="abc/validate.action" > <s:textfield name="name" label="姓名"/> <s:textfield name="password" label="密码"/> <s:textfield name="age" label="年龄"/> <s:textfield name="email" label="邮箱"/> <s:submit/> </s:form> </body></html>
OK.这就是struts2的一个最最简单的验证过程。。。
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