struts2

struts2框架简介+搭建新项目

2018-05-04  本文已影响0人  DouDouZH

一、概述

二、搭建新项目

1.用到的struts2版本
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2.配置struts.xml

在src根目录下建立struts.xml文件


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找到下载的strust2中blank这个包


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打开找到strust.xml复制他的约束条件,按照打开文件的格式写自己的xml


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建立的struts.xml文件如下
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE struts PUBLIC
    "-//Apache Software Foundation//DTD Struts Configuration 2.3//EN"
    "http://struts.apache.org/dtds/struts-2.3.dtd">
<struts>
    <constant name="false" value="struts.enable.DynamicMethodInvocation"/>
    <constant value="true" name="struts.devMode"/>
    <package name="default" extends="struts-default" namespace="/">
    ...这里写配置
        
    </package>
</struts>

3.导入jar包

复制struts2-blank中lib下的所有jar包导入项目中


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4.在web.xml中配置过滤器

复制struts2-blank中web.xml下的过滤器配置


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配置好的web.xml代码如下

<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://xmlns.jcp.org/xml/ns/javaee" xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_3_1.xsd" id="WebApp_ID" version="3.1">
  <display-name>struts2.217</display-name>
  <welcome-file-list>
    <welcome-file>index.html</welcome-file>
    <welcome-file>index.htm</welcome-file>
    <welcome-file>index.jsp</welcome-file>
    <welcome-file>default.html</welcome-file>
    <welcome-file>default.htm</welcome-file>
    <welcome-file>default.jsp</welcome-file>
  </welcome-file-list>
  <!--配置过滤器-->
  <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>

三、简单的hello world

1.配置过滤器web.xml
<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://xmlns.jcp.org/xml/ns/javaee" xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_3_1.xsd" id="WebApp_ID" version="3.1">
  <display-name>struts2.helloworld</display-name>
  <welcome-file-list>
    <welcome-file>index.html</welcome-file>
    <welcome-file>index.htm</welcome-file>
    <welcome-file>index.jsp</welcome-file>
    <welcome-file>default.html</welcome-file>
    <welcome-file>default.htm</welcome-file>
    <welcome-file>default.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.src下配置struts.xml

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE struts PUBLIC
    "-//Apache Software Foundation//DTD Struts Configuration 2.3//EN"
    "http://struts.apache.org/dtds/struts-2.3.dtd">
<struts>
    <constant name="false" value="struts.enable.DynamicMethodInvocation"/>
    <constant value="true" name="struts.devMode"/>
    <package name="default" extends="struts-default" namespace="/">
        <!--name:访问名称 -->
    <action name="ok">
            <!--配置返回值到页面-->
            <result>/HelloWord.jsp</result>
        </action>
    </package>
</struts>

3.index.jsp界面

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

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
  <head>
    <title>hello world</title>
  </head>
  
  <body>
    <a href="ok">点击跳转<a>
  </body>
</html>
4.HelloWorld.jsp界面
<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
  <head>
    <title>helloworld</title>
  </head>

  <body>
    Hello World
  </body>
</html>

5.运行效果

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