SpringMVC
SpringMVC的配置与使用
配置项目
①建立一个Java web项目
②导入相关的jar包
③配置web.xml文件
1 <?xml version="1.0" encoding="UTF-8"?> 2 <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"> 3 <display-name>SpringMVC</display-name> 4 <welcome-file-list> 5 <welcome-file>index.jsp</welcome-file> 6 </welcome-file-list> 7 8 <!-- 配置dispatcherServlet --> 9 <servlet> 10 <servlet-name>springmvc</servlet-name> 11 <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class> 12 <init-param> 13 <param-name>contextConfigLocation</param-name> 14 <param-value>classpath:springmvc_servlet.xml</param-value> 15 </init-param> 16 </servlet> 17 18 <servlet-mapping> 19 <servlet-name>springmvc</servlet-name> 20 <url-pattern>/</url-pattern> 21 </servlet-mapping> 22 23 <!-- 编码过滤器 --> 24 <filter> 25 <filter-name>encode</filter-name> 26 <filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class> 27 <async-supported>true</async-supported> <!-- 异步 --> 28 <init-param> 29 <param-name>encoding</param-name> 30 <param-value>UTF-8</param-value> 31 </init-param> 32 </filter> 33 34 <filter-mapping> 35 <filter-name>encode</filter-name> 36 <url-pattern>/*</url-pattern> 37 </filter-mapping> 38 39 40 </web-app>
④创建springmvc_servlet.xml配置文件
1 <?xml version="1.0" encoding="UTF-8"?> 2 <beans xmlns="http://www.springframework.org/schema/beans" 3 xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 4 xmlns:p="http://www.springframework.org/schema/p" 5 xmlns:mvc="http://www.springframework.org/schema/mvc" 6 xmlns:context="http://www.springframework.org/schema/context" 7 xmlns:util="http://www.springframework.org/schema/util" 8 xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.0.xsd 9 http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.0.xsd 10 http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-3.0.xsd 11 http://www.springframework.org/schema/util http://www.springframework.org/schema/util/spring-util-3.0.xsd"> 12 13 14 <!-- 使用注解方式完成映射 --> 15 <!-- 让扫描spring扫描这个包下所有的类,让标注spring注解的类生效 --> 16 <context:component-scan base-package="com.etc.controller"/> 17 <mvc:annotation-driven/><!-- 开启注解 --> 18 19 <!-- 视图解析器 --> 20 <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver"> 21 <property name="prefix" value="/WEB-INF/jsp/"/> 22 <property name="suffix" value=".jsp"></property> 23 </bean> 24 </beans>
⑤创建Controller
建包com.etc.controller
建类文件HelloController.java
1 package com.etc.controller; 2 3 import org.springframework.stereotype.Controller; 4 import org.springframework.web.bind.annotation.RequestMapping; 5 6 @Controller 7 public class HelloController { 8 @RequestMapping(value="/welcome") //welcome要访问的url地址 9 public String hello(){ 10 System.out.println("hello,springmvc"); 11 return "hello"; //hello是逻辑视图名,和后缀名组合一起构成视图名 /web-inf/jsp/hello.jsp 12 } 13 14 }
⑥创建视图
在WEB-INF下创建jsp文件夹,在文件下创建hello.jsp文件
⑦在浏览器输入访问地址
http://localhost:8080/SpringMVC/welcome