struts2应用之一HelloWorld

2018-05-11 浏览次数:

1.实现步骤

(1)打开myeclipse新建一个Web Project

(2)为项目命名为HelloWorld,然后Finish

(3)选中项目右键，选择MyEclipse在弹出的框中点击Add struts capailities

(4)在弹出的对话框中选择struts 2.1 和 /* ,然后Finish

(5)此时你会在你的项目文件夹下看到多了struts core libraries 以及在src文件夹下出现了个struts.xml

注：当然如果你用的编译器不自带Struts，你可以到官网去下载你所需要的版本(Struts下载),然后按照下图把下载好的jar包放入到你的项目的WEB-INF\lib下。 (所需jar包，在你下好的文件struts-2.3.34\lib下)

(6)编辑HelloAction类，首先在src下新建一个package，我建的名为：indi.zx.j2eetest，然后在该包中新建HelloAction类，添加如下代码：

package indi.zx.j2eetest;

public class HelloAction {

	private String name;


	public String execute()throws Exception{
		return "success";
	}
	public String getName() {
		return name;
	}

	public void setName(String name) {
		this.name = name;
	}


}

(7)编辑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">
	-->
  </head>

  <body>
  <h1>Hello XiaoHuZiXianShengZx</h1>
  <form action="hello">
  <input type="text" name="name" />
  <input type="submit" value="提交" />
  </form>
  </body>
</html>

(8)编辑hello.jsp

<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<%@ taglib prefix="s" uri="/struts-tags" %>
<%
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 'hello.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">
	-->

  </head>

  <body>
  Hello,<s:property value="name" />

  </body>
</html>

(9)配置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="mypackage" extends="struts-default">
<action name="hello" class="indi.zx.j2eetest.HelloAction" method="execute">
    <result name="success">/hello.jsp</result>
</action>
</package>
</struts>

(10)配置web.xml，要是按照上面步骤可以不用改这个文件，以后会在其他项目中编辑这个文件。

<?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">
  <display-name></display-name>
  <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>

2.结果显示

首页

输入XiaoHuZiZx点击提交后

至此,一个struts入门的程序就完成了……