SpringMVC插件安装、环境配置及快速入门_学习笔记
SpringMVC 是现在广泛应用的框架结构,我也只是一个初学者,一遍学习一遍梳理整合,如有错误,希望大神指点,别误人。
MVC :Model-View-Control
框架性质的C 层要完成的主要工作:封装web 请求为一个数据对象、调用业务逻辑层来处理数据对象、返回处理数据结果及相应的视图给用户。
现在我们先说一下Spring的插件安装,我用的是Eclipse4.5.2版本
如果你不知道自己用的什么版本的eclipse,在你eclipse的安装目录,打开:
(直接拖到浏览器上就可以打开)
然后打开eclipse,如图:
在这个地址中填上:http://dist.springsource.com/release/TOOLS/update/e4.5.2/
在4.5.2处改成你自己的版本就好。安装好,创建文件的时候就会有这个:
(一会儿会用到)
创建个动态项目工程,导入以下几个jar包:
然后,我们需要在WEB-INF文件下创建一个上面的那个.xml文件,然后配置:
<?xml version="1.0" encoding="UTF-8"?> <beans xmlns="http://www.springframework.org/schema/beans" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:cache="http://www.springframework.org/schema/cache" xmlns:context="http://www.springframework.org/schema/context" xmlns:mvc="http://www.springframework.org/schema/mvc" xsi:schemaLocation="http://www.springframework.org/schema/cache http://www.springframework.org/schema/cache/spring-cache-4.0.xsd http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-4.0.xsd http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.0.xsd"> <context:component-scan base-package="com.ysu.controller"></context:component-scan> <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver"> <property name="prefix" value="/WEB-INF/views/"></property> <property name="suffix" value=".jsp"></property> </bean> </beans>
然后我们再配置以下web.xml文件,和配置servlet很像:
<servlet> <servlet-name>springDispatcherServlet</servlet-name> <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class> <!-- <init-param> <param-name>contextConfigLocation</param-name> <param-value>classpath:springmvc.xml</param-value> </init-param> --> <load-on-startup>1</load-on-startup> </servlet> <!-- Map all requests to the DispatcherServlet for handling --> <servlet-mapping> <servlet-name>springDispatcherServlet</servlet-name> <url-pattern>/</url-pattern> </servlet-mapping>
下面是我练习的一个例子,包含Ant风格及PathVariable变量、rest请求风格、POST请求转化为PUT请求。上传了一个.java 文件一个jsp文件:
package com.ysu.controller; import org.springframework.stereotype.Controller; import org.springframework.web.bind.annotation.PathVariable; import org.springframework.web.bind.annotation.RequestMapping; import org.springframework.web.bind.annotation.RequestMethod; @Controller public class AController { private static final String SUCCESS="success"; @RequestMapping(value="/testAnt/{id}") public String testAnt(@PathVariable(value="id") Integer id){ System.out.println("++++++++++"+id); return SUCCESS; } @RequestMapping("/sayHello") public String sayHello(){ return SUCCESS; } @RequestMapping(value="/order/{id}",method=RequestMethod.GET) public String getOrderById(@PathVariable(value="id") Integer id){ System.out.println("----------"+id); return SUCCESS; } @RequestMapping(value="/order/{id}",method=RequestMethod.POST) public String getOrderById1(@PathVariable(value="id") Integer id){ System.out.println("~~~~~~~~~~"+id); return SUCCESS; } @RequestMapping(value="/order/{id}",method=RequestMethod.PUT) public String getOrderById2(@PathVariable(value="id") Integer id){ System.out.println("************"+id); return SUCCESS; } }
<%@ 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>Insert title here</title> </head> <body> <a href="${pageContext.request.contextPath}/sayHello">GoGoGo</a> <a href="${pageContext.request.contextPath}/testAnt">GoGoGo</a> <a href="${pageContext.request.contextPath}/order/123">GetGoGoGo</a> <form action="${pageContext.request.contextPath}/order/123" method="post"> <input type="submit" value="submit"/> </form> <form action="${pageContext.request.contextPath}/order/123" method="post"> <input type="submit" value="submit"/> <input type="hidden" name="_method" value="put"/> </form> </body> </html>