<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE struts PUBLIC
"-//Apache Software Foundation//DTD Struts Configuration 2.1.7//EN"
"http://struts.apache.org/dtds/struts-2.1.7.dtd">
<struts>
<constant name="struts.devMode" value="true" />
<package name="validate" namespace="/" extends="struts-default">
<action name="*-*" class="com.wepull.action.{1}Action" method="{2}">
<result name="success" type="dispatcher">/{1}-{2}.jsp</result>
<result name="error" >/error.jsp</result>
</action>
</package>
</struts>
package com.wepull.action;
import java.util.Date;
import com.opensymphony.xwork2.ActionSupport;
public class ValidateAction extends ActionSupport{
private String name;
@Override
public String execute() throws Exception {
System.out.println(name);
if(name==null||"admin".equalsIgnoreCase(name)){
this.addFieldError("errorName", "名字为空或不不合法");
return ERROR;
}
return SUCCESS;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
}
Validate-execute.jsp
<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<%
String path = request.getContextPath();
String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<base href="<%=basePath%>">
<title>My JSP 'index.jsp' starting page</title>
</head>
<body>
可以注册用户名：${name }
</body>
</html>
error.jsp
<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<%@ taglib uri="/struts-tags" prefix="s"%>
<%
String path = request.getContextPath();
String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<base href="<%=basePath%>">
<title>My JSP 'index.jsp' starting page</title>
</head>
<body>
<s:fielderror name="errorName"></s:fielderror> <br>
<br>
<s:property value="errors.errorName"/>
<br>
<s:property value="errors.errorName[0]"/>
<s:debug></s:debug>
</body>
</html>