注：本文系作者在看了浪曦的风中叶老师的struts2视频的个人总结，希望能帮助广大struts2的初学者。
此处为了简便起见和知识重复性的避免，暂不考虑类型转换问题。
第一步：（这一步和其他一样，这里从简）依旧是新建一个web project，命名为checkxml，导入struts2必须的包。在src目录下新建struts.xml，修改web.xml文件。
第二步：将index.jsp改名为reg.jsp（这个不是必须的，事实上也没有必要，此处只是为了便于称呼）。Input.jap的代码如下
lt;%@ page language="java" import="java.util.*" pageEncoding="GB18030"%><%String path= request.getContextPath();String basePath= request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";%><%@ taglib prefix="s" uri="/struts-tags"%><!DOCTYPE HTML PUBLIC"-//W3C//DTD HTML4.01 Transitional//EN"><html>
lt;head>
lt;base href="<%=basePath%>">
lt;title>My JSP'index.jsp' starting page</title> <meta http-equiv="pragma" content="no-cache"> <meta http-equiv="cache-control" content="no-cache"> <meta http-equiv="expires" content="0"> <meta http-equiv="keywords" content="keyword1,keyword2,keyword3"> <meta http-equiv="description" content="This is my page"> <!-- <link rel="stylesheet" type="text/css" href="styles.css"> -->
lt;/head>
lt;body> <s:form action="reg"> <s:textfield name="username" label="username"></s:textfield> <s:password name="password" label="password"></s:password> <s:password name="repassword" label="repassword"></s:password> <s:textfield name="age" label="age"></s:textfield> <s:textfield name="birthday" label="birthday"></s:textfield> <s:textfield name="graduation" label="graduation"></s:textfield>
lt;s:submit name="submit"></s:submit> <s:reset name="reset"></s:reset> </s:form>
lt;/body></html>
第二步：action在src目录下新建新建包cn.edu.hdu.action在其中新建一个RegAction.java文件代码如下
ackage cn.edu.hdu.action;
import java.util.Calendar;import java.util.Date;
import com.opensymphony.xwork2.ActionSupport;
ublic class RegAction extends ActionSupport
{ private String username; private String password; private String repassword; private int age; private Date birthday; private Date graduation; public String getUsername(){ return username; } public void setUsername(String username){ this.username= username; } public String getPassword(){ return password; } public void setPassword(String password){ this.password= password; } public String getRepassword(){ return repassword; } public void setRepassword(String repassword){ this.repassword= repassword; } public int getAge(){ return age; } public void setAge(int age){ this.age= age; } public Date getBirthday(){ return birthday; } public void setBirthday(Date birthday){ this.birthday= birthday; } public Date getGraduation(){ return graduation; } public void setGraduation(Date graduation){ this.graduation= graduation; } public String execute() throws Exception { return SUCCESS; }
}
第三步：修改struts.xml文件代码如下
lt;?xml version="1.0" encoding="UTF-8"?><!DOCTYPE struts PUBLIC
quot;-//Apache Software Foundation//DTD Struts Configuration2.0//EN"
quot;struts.apache.org/dtds/struts-2.0.dtd">
lt;struts> <package name="checkxml" extends="struts-default"> <action name="reg" class="cn.edu.hdu.action.RegAction"> <result name="success">/success.jsp</result> <result name="input">reg.jsp</result> </action> </package></struts>
第四步：在WebRoot目录下新建另一个视图 success.jsp代码如下（此文件在这个效验中基本没有什么作用）
lt;%@ page language="java" import="java.util.*" pageEncoding="GB18030"%><%String path= request.getContextPath();String basePath= request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";%>
lt;!DOCTYPE HTML PUBLIC"-//W3C//DTD HTML4.01 Transitional//EN"><html>
lt;head>
lt;base href="<%=basePath%>">
lt;title>My JSP'success.jsp' starting page</title>
lt;meta http-equiv="pragma" content="no-cache"> <meta http-equiv="cache-control" content="no-cache"> <meta http-equiv="expires" content="0"> <meta http-equiv="keywords" content="keyword1,keyword2,keyword3"> <meta http-equiv="description" content="This is my page"> <!-- <link rel="stylesheet" type="text/css" href="styles.css"> -->
lt;/head>
lt;body>
恭喜你验证通过</body></html>
最后一步，也是本节真正内容所在在cn.edu.hdu.action目录下新建一个名字与action对应的xml文件RagAction-validation.xml代码如下：
lt;?xml version="1.0" encoding="UTF-8"?><!DOCTYPE validators PUBLIC
quot;-//OpenSymphony Group//XWork Validator1.0.2//EN"
quot;//www.opensymphony.com/xwork/xwork-validator-1.0.2.dtd">
lt;!--框架校验部分--><validators> <!--分别对每一个字段校验--> <field name="username"> <!--每一种校验标准--> <field-validator type="requiredstring"> <!-- field-validator下的一些属性标签说白了就是一些传入函数的参数--> <param name="trim">true</param>
lt;!--出错信息--> <message>username is required</message> </field-validator>
lt;/field> <!--一下都和username类似将不做批注--> <field name="password"> <!--每一种校验标准--> <field-validator type="requiredstring"> <!-- field-validator下的一些属性标签说白了就是一些传入函数的参数--> <param name="trim">true</param>
lt;!--出错信息--> <message>password is required</message> </field-validator>
lt;field-validator type="stringlength"> <param name="minLength">6</param> <param name="maxLength">10</param> <message> password should between${minLength} to${maxLength} </message> </field-validator>
lt;/field>
lt;field name="repassword"> <!--每一种校验标准--> <field-validator type="requiredstring"> <!-- field-validator下的一些属性标签说白了就是一些传入函数的参数--> <param name="trim">true</param>
lt;!--出错信息--> <message>repassword is required</message> </field-validator>
lt;field-validator type="stringlength"> <param name="minLength">6</param> <param name="maxLength">10</param> <message> repassword should between${minLength} to${maxLength} </message> </field-validator>
lt;/field>
lt;field name="age"> <!--每一种校验标准-->
lt;field-validator type="int"> <param name="min">1</param> <param name="max">150</param> <message>age should between${min} to${max}</message> </field-validator>
lt;/field>
lt;field name="birthday"> <!--每一种校验标准--> <field-validator type="requiredstring"> <!-- field-validator下的一些属性标签说白了就是一些传入函数的参数--> <param name="trim">true</param>
lt;!--出错信息--> <message>birthday is required</message> </field-validator>
lt;field-validator type="date"> <param name="min">2000-1-1</param> <param name="max">2010-12-31</param> <message>birthday should between${min} to${max}</message> </field-validator>
lt;/field>
lt;field name="graduation"> <!--每一种校验标准--> <field-validator type="requiredstring"> <!-- field-validator下的一些属性标签说白了就是一些传入函数的参数--> <param name="trim">true</param>
lt;!--出错信息--> <message>graduation is required</message> </field-validator>
lt;field-validator type="date"> <param name="min">2000-1-1</param> <param name="max">2010-12-31</param> <message> graduation should between${min} to${max} </message> </field-validator>
lt;/field>
lt;/validators>
把 lt; 这个字符换成 < 就可以