Struts2 表單驗證

(1)配置文件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" namespace="/" extends="struts-default">         <action name="User" class="com.lyh.struts2.User">             <result name="success">/result.jsp</result>             <result name="input">/index.jsp</result>         </action>     </package> </struts> (2)User Action類 package com.lyh.struts2; import com.opensymphony.xwork2.ActionSupport; import java.util.*; public class User extends ActionSupport {     private String userName;   //用戶名     private String password;    //密碼     private String name;        //名字     private String sex;          //性別     private int age;             //年齡     private Date birthday;       //生日     private String email;        //電郵     private String mainPage;     //我的主頁     private String country;      //所在國家     private String description; //描述     private List<String> sports = new ArrayList<String>(); //喜歡的運動     public String execute() throws Exception {         System.out.println("Age=" + getAge());         System.out.println("Birthday" + birthday);         sports = getSports();         for (String sport : sports) {             System.out.println(sport);         }         if ((sex == null) || sex.equals("")) {             addFieldError("sex", "sex is not null");             return INPUT;         }         return SUCCESS; } ―――get/set方法 } (3)驗證規則文件User-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-validator type="stringlength">             <param name="fieldName">userName</param>             <param name="minLength">6</param>             <param name="maxLength">10</param>             <param name="trim">true</param>             <message key="stringlengthmessage"/>         </field-validator>         <field-validator type="regex">             <param name="fieldName">userName</param>             <param name="expression">[A-Za-z0-9]+</param>             <message key="regexmessage"/>         </field-validator>     </field>     <field name="name">         <field-validator type="requiredstring">             <message key="requiredstring"/>         </field-validator>         <field-validator type="regex">             <param name="fieldName">name</param>             <param name="expression">[a-zA-Z]+</param>             <message key="nameregexmessage"/>         </field-validator>     </field>     <field name="age">         <field-validator type="int">             <param name="min">1</param>             <param name="max">120</param>             <message key="agemessage"/>         </field-validator>     </field>     <field name="email">         <field-validator type="email">             <param name="fieldName">email</param>             <message key="emailmessage"/>         </field-validator>     </field>     <validator type="url">         <param name="fieldName">mainPage</param>         <message key="mainpagemessage"/>     </validator>     <field name="birthday">         <field-validator type="date">             <param name="min">1980-01-01</param>             <param name="max">2007-07-29</param>             <message key="birthdaymessage"/>         </field-validator>     </field> </validators> （4）package.properties屬性文件 requiredstring=This field is required! stringlengthmessage=userName must be between ${minLength}and${maxLength} needs to be 6-8 characters long ! regexmessage=The userName must be character and number! nameregexmessage=name must be all character! agemessage=Age must be in range ${min} and ${max} emailmessage=Must provide a valid email! mainpagemessage=Invalid homepage url birthdaymessage=Birthday must be within ${min} and ${max} (5)index.jsp頁面 <%@ page contentType="text/html;charset=UTF-8" language="java"%> <%@ taglib prefix="s" uri="/struts-tags"%> <html>     <head>         <title>Struts2 Validation Application!</title>         <s:head theme="ajax" />     </head>     <body>         This is a Validate Application!     <hr>     <s:fielderror />     <s:form action="User.action" method="POST">     <s:textfield key="userName" label="UserName" />     <br>     <s:password key="password" label="Password" />     <s:textfield key="name" label="Name" />     <s:radio label="Sex" list="{'Male','Female'}" key="sex" />     <s:textfield label="Age" key="age" value="18" />     <s:checkboxlist list="{'football','basketball','pingpang'}"                 label="Sports" key="sports" />     <s:textfield label="Email" key="email" value="[email]abc@yahoo.com.cn[/email]" />     <s:textfield label="Main Page" key="mainPage" value="http://" />     <s:datetimepicker key="birthday" label="Birthday" toggleType="explode" toggleDuration="500" value="2007-08-29" />     <s:select list="{'China','American','Japenese'}"            label="Select Country" headerKey="1" headerValue="-- Please Select --" key="country" />     <s:textarea key="description" label="Description" rows="8" cols="20" />     <s:submit />     <s:reset                 form now... Press OK to continue!');" />         </s:form>         <hr>         This Example from <a href="http://hi.baidu.com/vsandjava">[url]http://hi.baidu.com/vsandjava</a>[/url]     </body> </html> （6）result.jsp <%@ page contentType="text/html;charset=UTF-8" language="java" %> <%@ taglib prefix="s" uri="/struts-tags" %> <html> <head>     <title>         Simple jsp page     </title> </head> <body> <center><h7><b>This is Result!</b></h7></center> <br> <center>     userName:<s:property value="userName"/> <br>     Password:<s:property value="password"/> <br>     Sex:<s:property value="sex"/> <br>     Name:<s:property value="name"/> <br>     Age:<s:property value="age"/> <br>     Sports:<s:property value="sports"/> <br>     Birthday:<s:property value="birthday"/> <br>     Country:<s:property value="country"/> <br>     Email:<s:property value="email"/> <br>     MainPage:<s:property value="mainPage"/> <br>     Description:<s:property value="description"/> <br> </center> </body> </html> (7)web.xml <?xml version="1.0" encoding="UTF-8"?> <web-app xmlns="http://java.sun.com/xml/ns/javaee"          xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"          xsi:schemaLocation="http://java.sun.com/xml/ns/javaee         [url]http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd[/url]"          version="2.5">     <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>     Word版下載地址: [url]http://vsandjava.ys168.com/[/url]