SpringMVC annotation注解版helloworld

来源：互联网发布：林俊杰睡粉知乎编辑：程序博客网时间：2024/06/07 23:00

这里结合我的上一篇文章，讲的是xml的helloworld.

web.xml

<?xml version="1.0" encoding="UTF-8"?><web-app version="2.5" xmlns="http://java.sun.com/xml/ns/javaee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd">  <display-name></display-name>  <servlet>  <servlet-name>springmvc</servlet-name>  <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>  <!-- 可以设置Dispatcher的初始化参数来设置spring配置文件的地址  classpath就是 /src地址   -->  <init-param>      <param-name>contextConfigLocation</param-name>      <param-value>classpath:mvc.xml</param-value>  </init-param>  <!-- Servlet配置信息要写在load-ons-startup前面 -->  <load-on-startup>1</load-on-startup>  </servlet>  <welcome-file-list>    <welcome-file>index.jsp</welcome-file>  </welcome-file-list>    <servlet-mapping>        <servlet-name>springmvc</servlet-name>        <url-pattern>*.html</url-pattern>    </servlet-mapping></web-app>

mvc.xml

<?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:p="http://www.springframework.org/schema/p"    xmlns:context="http://www.springframework.org/schema/context"    xsi:schemaLocation="        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.xsd">    <!-- 渲染器 -->        <bean id="jspViewResolver" class="org.springframework.web.servlet.view.InternalResourceViewResolver">    <property name="viewClass" value="org.springframework.web.servlet.view.JstlView"/>    <property name="prefix" value="/WEB-INF/jsp/"/>    <property name="suffix" value=".jsp"/>    </bean>    <!-- 注解扫描器 -->    <context:component-scan base-package="cn.han.controller"/></beans>

HelloController.java

package cn.han.controller;import javax.servlet.http.HttpServletRequest;import javax.servlet.http.HttpServletResponse;import org.springframework.stereotype.Controller;import org.springframework.web.bind.annotation.RequestMapping;import org.springframework.web.servlet.ModelAndView;@Controllerpublic class HelloController {@RequestMapping("/hello")public ModelAndView hello(HttpServletRequest req,HttpServletResponse rep){ModelAndView mv=new ModelAndView();mv.addObject("msg", "hello spring mvc annotation!!");mv.setViewName("hello");return mv;}}

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