SpringMVC框架
一：内容
SpringMVC,它属于Spring基本框架里面的一个组成部分，在实际开发过程中，接收浏览器请求响应，对数据进行数据处理，然后返回页面进行显示。
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二：入门示例：
1.创建web工程，并导入相应的jar包
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2.新建SpringMVC全局配置文件
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<?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:mvc= "http://www.springframework.org/schema/mvc" xmlns:context= "http://www.springframework.org/schema/context" xmlns:aop= "http://www.springframework.org/schema/aop" xmlns:tx= "http://www.springframework.org/schema/tx" xsi:schemaLocation="http: //www.springframework.org/schema/beans http: //www.springframework.org/schema/beans/spring-beans-4.2.xsd http: //www.springframework.org/schema/mvc http: //www.springframework.org/schema/mvc/spring-mvc-4.2.xsd http: //www.springframework.org/schema/context http: //www.springframework.org/schema/context/spring-context.xsd http: //www.springframework.org/schema/aop http: //www.springframework.org/schema/aop/spring-aop-4.2.xsd http: //www.springframework.org/schema/tx http: //www.springframework.org/schema/tx/spring-tx.xsd"> </beans> |
3.在web。xml文件中配置前端过滤器
<?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>SpringMVC_01</display-name> <!-- 配置前端控制器DispatcherServlet --> <servlet> <servlet-name>springmvc</servlet-name> <servlet- class >org.springframework.web.servlet.DispatcherServlet</servlet- class > <init-param> <param-name>contextConfigLocation</param-name> <!-- 对应上一步创建全局配置文件的文件名以及目录 --> <param-value>classpath:springmvc.xml</param-value> </init-param> </servlet> <servlet-mapping> <servlet-name>springmvc</servlet-name> <url-pattern>*. do </url-pattern> </servlet-mapping> </web-app> |
4.编写处理器Handler
package cn.gzsxt.controller; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; import org.springframework.web.servlet.ModelAndView; import org.springframework.web.servlet.mvc.Controller; public class HelloController implements Controller{ @Override public ModelAndView handleRequest(HttpServletRequest request, HttpServletResponse response) throws Exception { ModelAndView modelView = new ModelAndView(); //类似于 request.setAttribute() modelView.addObject( "name" , "张三" ); modelView.setViewName( "/WEB-INF/view/index.jsp" ); return modelView; } } |
5.配置Handler，处理器映射器，配置处理器适配器，试图解析器
<!-- 配置Handler --> <bean name= "/hello.do" class = "com.ys.controller.HelloController" /> <!-- 配置处理器映射器 将bean的name作为url进行查找，需要在配置Handler时指定bean name（就是url）--> <bean class = "org.springframework.web.servlet.handler.BeanNameUrlHandlerMapping" /> <!-- 配置处理器适配器，所有适配器都得实现 HandlerAdapter接口 --> <bean class = "org.springframework.web.servlet.mvc.SimpleControllerHandlerAdapter" /> <!-- 配置视图解析器 进行jsp解析，默认使用jstl标签，classpath下得有jstl的包--> <bean class = "org.springframework.web.servlet.view.InternalResourceViewResolver" /> |
6.在WEB-INF/view目录下创建index.jsp文件
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<%@ 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> hello:${name} </body> </html> |
7.浏览器输出：
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