Struts1.x HelloWord

目录结构

web.xml文件

<?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" version="2.5" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee   http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd">
  <servlet>
    <servlet-name>action</servlet-name>
    <servlet-class>org.apache.struts.action.ActionServlet</servlet-class>
    <init-param>
      <param-name>config</param-name>
      <param-value>/WEB-INF/struts-config.xml</param-value>
    </init-param>
    <init-param>
      <param-name>debug</param-name>
      <param-value>3</param-value>
    </init-param>
    <init-param>
      <param-name>detail</param-name>
      <param-value>3</param-value>
    </init-param>
    <load-on-startup>0</load-on-startup>
  </servlet>
  <servlet-mapping>
    <servlet-name>action</servlet-name>
    <url-pattern>*.do</url-pattern>
  </servlet-mapping>
  <welcome-file-list>
    <welcome-file>index.jsp</welcome-file>
  </welcome-file-list>
</web-app>

sturts-config.xml

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE struts-config PUBLIC "-//Apache Software Foundation//DTD Struts Configuration 1.1//EN" "http://jakarta.apache.org/struts/dtds/struts-config_1_1.dtd">

<struts-config>
  <data-sources />
  <form-beans>
  	<!-- FormBean可以配置为静态FormBean与动态FormBean
  		+   静态FormBean
  		|-  ActionForm
  		|-  ValidatorForm
  		|-  ValidatorActionForm
  		+   动态FormBean
  		|-  DynaActionForm
  		|-  DynaValidatorForm
  		|-  DynaValidatorActionForm
  	 -->
  	<form-bean name="user" type="com.wj.pojo.User"></form-bean>
  
  	 <form-bean name="productForm" type="org.apache.struts.validator.DynaValidatorForm">
        <form-property name="productName" type="java.lang.String"></form-property>
        <form-property name="productPrice" type="java.lang.Double"></form-property>
        <form-property name="productDate" type="java.util.Date"></form-property>
        <form-property name="discription" type="java.lang.String"></form-property>
	</form-bean>
  </form-beans>
  <global-exceptions />
  <global-forwards />
  <action-mappings>
  	<!-- <action 
  		path="/地址"				  //拦截的地址	
  		type=""                   //Action 具体地址
  		parameter=""              //表示访问Action方法的标识,如:method=deleteUser 将访问deleteUser方法
  		input=""                  //指定验证错误返回的页面
  		validate="true"           //是否启动输入的效验
  		scope="request"
  	>  
  		<forward
  			name="index"      //在Action中,ActionMappding.findForward("index")，用户查找调转
  			path="/index.jsp" //跳转页面的具体地址
  		/>
  	</action>
  	-->
  
  	<action path="/login" 
  		input="/index.jsp"
  		validate="true"
  		scope="request"
  		parameter="method"        
  		type="com.wj.action.LoginAction"
  	>	
  		<forward name="tag" path="/tag.jsp"></forward>
  		<forward name="error" path="/error.jsp"></forward>
  	</action>
  
  </action-mappings>
  <message-resources parameter="com.wj.struts.ApplicationResources" />
</struts-config>

Action

package com.wj.action;

import java.util.ArrayList;
import java.util.List;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.apache.struts.action.ActionForm;
import org.apache.struts.action.ActionForward;
import org.apache.struts.action.ActionMapping;
import org.apache.struts.actions.DispatchAction;

import com.wj.pojo.User;


public class LoginAction extends DispatchAction{
	public ActionForward execute(ActionMapping mapping, ActionForm form,
			HttpServletRequest request, HttpServletResponse response)
			throws Exception {
		System.out.println(request.getParameter("userName")+"  开始验证登录.");
		System.out.println("密码为[ "+request.getParameter("password")+" ]");
		System.out.println("LoginAction execute()");
		
		return super.execute(mapping,form,request,response);
	}
	
	public ActionForward checkLogin(ActionMapping mapping, ActionForm form,
			HttpServletRequest request, HttpServletResponse response)
	throws Exception {
		System.out.println("开始检查用户是输入是否正确.");
		return mapping.findForward("error");
	}
	
	public ActionForward toTag(ActionMapping mapping,ActionForm form,
			HttpServletRequest request,HttpServletResponse response) throws Exception{
		List userList = new ArrayList();
		
		userList.add("张三");
		userList.add("李四");
		userList.add("王五");
		
		User user = new User();
		user.setAge(33);
		user.setName("赵六");
		userList.add(user);
		
		//设置 Bean到 request环境中
		request.setAttribute("userList", userList);
		//跳转到 标签库页面
		return mapping.findForward("tag");
	}
}

PO

package com.wj.pojo;

import org.apache.struts.action.ActionForm;

public class User extends ActionForm{
	private String name;
	private int age;
	public String getName() {
		return name;
	}
	public void setName(String name) {
		this.name = name;
	}
	public int getAge() {
		return age;
	}
	public void setAge(int age) {
		this.age = age;
	}
}

index.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>
	<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" mce_href="styles.css">
	-->
  </head>
  
  <body>
    <form action="login.do?method=checkLogin" method="post">
    	<input name="userName"/>
    	<input name="password" type="password"/>
    	<input type="submit" value="登录"/>
    </form>
	<hr/>
  	<a href="login.do?method=toTag" mce_href="login.do?method=toTag"><h2>Struts1.x 标签库</h2></a>
  </body>
</html>

tag.jsp

<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<%
	String path = request.getContextPath();
	String basePath = request.getScheme() + "://"
			+ request.getServerName() + ":" + request.getServerPort()
			+ path + "/";
%>

<%@taglib uri="http://jakarta.apache.org/struts/tags-bean" prefix="bean" %>
<%@taglib uri="http://jakarta.apache.org/struts/tags-logic" prefix="logic" %>

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
  <head>
    <base href="<%=basePath%>">
	<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">
  </head>
  
  <body>
    <h1>Struts1.x tag</h1>
	<bean:message key="time" /> 

    
    
    <h2>ArrayList 迭代</h2>
    <!-- ArrayList 迭代 -->
    <logic:iterate id="user" name="userList" indexId="index" scope="request">
    	<bean:write name="index"/> : 
    	<logic:notEqual value="3" name="index">
    		<bean:write name="user"/>
    		<br/>
    	</logic:notEqual>
    	<logic:equal value="3" name="index">
    		name: <bean:write name="user" property="name"/>
    		age: <bean:write name="user" property="age"/>
    		<br/>
    	</logic:equal>
    </logic:iterate>
    <hr/>
    
    
    <h2>HashMap 迭代</h2>
    	<!-- 对map的遍历 -->
		<%
			java.util.HashMap countries = new java.util.HashMap();
			countries.put("country1", "中国");
			countries.put("country2", "美国");
			countries.put("country3", "英国");
			countries.put("country4", "法国");
			countries.put("country5", "德国");
			pageContext.setAttribute("countries", countries);
		%>
	<logic:iterate id="country" name="countries">
		<bean:write name="country" property="key"/> :
		<bean:write name="country" property="value"/>
		<br/>
	</logic:iterate>	
	<logic:iterate id="country" name="countries">
		${country.key} : ${country.value}
		<br/>
	</logic:iterate>	
<hr/>
	
	
	<h2>logic:equal</h2>
	<!-- logic:equal -->
	<!-- 
		判断是否相等
	 -->
	<%pageContext.setAttribute("equal",3); %>
	<logic:equal value="3" name="equal">
		<%pageContext.setAttribute("equal",3); %>
		<br/>
		logic:equest value="3" name="equal"
		<br/>
		<u>如果结果通过,就能进入到logic:equal 块中</u>
	</logic:equal>
<hr/>	
	
	
	<!--logic:match -->
	<!--
		location="end" 以x结尾
		location="start" 以x开头
	 -->
	<h2>logic:match</h2>
	<%pageContext.setAttribute("match","Hello Struts taglib Struts"); %>
	<logic:match value="Struts" name="match" location="end">
		true
	</logic:match>
<hr/>
    
    
    <!-- logic:present -->  
	<%
  		pageContext.setAttribute("ExistingString", "teststring");
  	%>  
	<logic:present name="ExistingString">  
 	ExistingString的值为<bean:write name="ExistingString"/>  
	</logic:present>    
	<logic:notPresent name="ExistingString">  
	ExistingString的值为<bean:write name="ExistingString"/>  
	</logic:notPresent>
<hr/>
	<!-- logic:empty -->
	<%
		pageContext.setAttribute("empty", "");
	%>
	<logic:empty name="empty">
		empty 为空
	</logic:empty>
  </body>
</html>

<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
  <head>
  </head>
  <body>
    <h1>Error Page</h1>
  </body>
</html>