例14-7 实现空表单信息的提示
index.jsp
<%@ page language="java" contentType="text/html; charset=GBK"%>
<%@taglib prefix="s" uri="/struts-tags"%>
<html>
<head>
<title>请输入您的注册信息</title>
</head>
<body>
<H1>请输入您的注册信息</H1>
<s:form action="regist">
<s:textfield label="用户名" name="name"/>
<s:password label="密码" name="pass"/>
<s:password label="确认密码" name="rpass"/>
<s:textfield label="年龄" name="age"/>
<s:textfield label="电话" name="phone"/>
<s:submit value="提交"/>
</s:form>
</body>
</html>web.xml
<?xml version="1.0" encoding="UTF-8"?>
<web-app version="2.5"
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
http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd">
<welcome-file-list>
<welcome-file>index.jsp</welcome-file>
</welcome-file-list>
<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></web-app>struts.xml
<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE struts PUBLIC "-//Apache Software Foundation//DTD Struts Configuration 2.1//EN" "http://struts.apache.org/dtds/struts-2.1.dtd">
<struts>
<package name="lee" extends="struts-default">
<action name="regist" class="tom.jiafei.ZhuceAction">
<result name="success">/welcome.jsp</result>
<result name="input">/index.jsp</result>
</action>
</package>
</struts>zhuceAction.java
package tom.jiafei;
import com.opensymphony.xwork2.ActionSupport;
import com.opensymphony.xwork2.ActionContext;
import java.util.*;
import java.util.regex.*;
import java.text.*;
public class ZhuceAction extends ActionSupport
{
private String name;
private String pass;
private String rpass;
private String phone;
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public String getPass() {
return pass;
}
public void setPass(String pass) {
this.pass = pass;
}
public String getRpass() {
return rpass;
}
public void setRpass(String rpass) {
this.rpass = rpass;
}
public String getPhone() {
return phone;
}
public void setPhone(String phone) {
this.phone = phone;
}
public String execute() throws Exception {
return SUCCESS;
}
}<?xml version="1.0" encoding="GBK"?>
<!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>用户名不能为空</message>
</field-validator>
</field>
<field name="pass">
<field-validator type="requiredstring">
<param name="trim">true</param>
<message>密码不能为空</message>
</field-validator>
</field>
<field name="rpass">
<field-validator type="requiredstring">
<param name="trim">true</param>
<message>确认密码不能为空</message>
</field-validator>
<field-validator type="fieldexpression">
<param name="expression"><![CDATA[(pass==rpass)]]></param>
<message>两次输入密码不一致</message>
</field-validator>
</field>
<field name="phone">
<field-validator type="requiredstring">
<param name="trim">true</param>
<message>电话不能为空</message>
</field-validator>
<field-validator type="regex">
<param name="expression"><![CDATA[(1\d{10})]]></param>
<message>电话必为11位数字，且必以1开头</message>
</field-validator>
</field>
</validators> 
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