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struts建立工程helloworld

mac2022-06-30  63
Java web环境:Tomcat + Jdk +eclipse java EE 创建一个能运行的java web工程，记得勾选上web.xml 下载struts库，目前最新2.5-2.16 all.zip 将lib下的jar包 http://mirrors.tuna.tsinghua.edu.cn/apache/struts/2.5.16/struts-2.5.16-all.zip 放到当前的工程lib文件夹 下，右键build path,add to path   工程项目如下：   hello包下的helloworld.java: package hello; public class helloworld {    private String message; public String getMessage() { return message; } public void setMessage(String message) { this.message = message; } public String execute() { if(getMessage().isEmpty()) { return "error"; }else {     return "success"; } }   } src文件夹下struts.xml： <?xml version="1.0" encoding="UTF-8"?>     <!DOCTYPE struts PUBLIC         "-//Apache Software Foundation//DTD Struts Configuration 2.5//EN"         "http://struts.apache.org/dtds/struts-2.5.dtd">     <struts>         <package name="helloworld" namespace="/" extends="struts-default">         <action  name="helloworld" class="hello.helloworld">     <result  name="success">/showMessage.jsp</result>     <result  name="error">/nomessage.jsp</result>         </action>         </package>     </struts>

WEB-INF:文件夹下web.xml

<?xml version="1.0" encoding="UTF-8"?>

<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://java.sun.com/xml/ns/javaee" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd" id="WebApp_ID" version="3.0">

  <display-name>helloworld</display-name>

  <welcome-file-list>

    <welcome-file>index.jsp</welcome-file>

  </welcome-file-list>

 

<!-- 配置核心拦截器-->

<filter>

    <!-- Filter的名字-->

    <filter-name>struts2</filter-name>

    <!-- Filter的实现类struts2.5以前可能有所不同-->

    <filter-class>org.apache.struts2.dispatcher.filter.StrutsPrepareAndExecuteFilter</filter-class>

</filter>

<filter-mapping>

    <filter-name>struts2</filter-name>

    <!--拦截所有的url -->

    <url-pattern>/*</url-pattern>

</filter-mapping> 

</web-app>

 

 

 

WebContent文件夹下：

inputMessage.jsp:

<%@ page language="java" contentType="text/html; charset=UTF-8"

    pageEncoding="UTF-8"%>

<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">

<html>

<head>

<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">

<title>input message page</title>

</head>

<body>

<form action="helloworld.action" method="post">

Message:<input name="message" type="text">

<input type="submit"value="提交">

</form>

</body>

</html>

 

nomessage.jsp:

<%@ page language="java" contentType="text/html; charset=UTF-8"

    pageEncoding="UTF-8"%>

<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">

<html>

<head>

<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">

<title>noMessage</title>

</head>

<body>

  no message was input!

</body>

</html>

showmessage.jsp 

<%@ page language="java" contentType="text/html; charset=UTF-8"

    pageEncoding="UTF-8"%>

<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">

<%@ taglib prefix="s" uri="/struts-tags"%>

<html>

<head>

<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">

<title>show message page</title>

</head>

<body>

    the input message is: <s:property value="message" />

</body>

</html>

 

运行结果：

 

转载于:https://www.cnblogs.com/zhaocundang/p/9029556.html

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