SpringMVC_HelloWorld_02

通过注解的方式实现一个简单的HelloWorld。

一、新建项目

同SpringMVC_HelloWorld_01

二、配置文件

1、配置web.

<??><web-app ="http://www.w3.org/2001/  ="http://java.sun.com/  xsi:schemaLocation="http://java.sun.com/  id="WebApp_ID" version="3.0">  <!-- The front controller of this Spring Web application, responsible for     handling all application requests -->  <servlet>    <servlet-name>springmvc</servlet-name>    <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>    <load-on-startup>1</load-on-startup>  </servlet>  <!-- Map all requests to the DispatcherServlet for handling -->  <servlet-mapping>    <servlet-name>springmvc</servlet-name>    <url-pattern>/</url-pattern>  </servlet-mapping></web-app>

2、配置springmvc-servlet.

<??><beans ="http://www.springframework.org/schema/beans"  ="http://www.w3.org/2001/  ="http://www.springframework.org/schema/context"  ="http://www.springframework.org/schema/mvc"  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-4.2.xsd    http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-4.2.xsd">  <!-- 配置扫描自定义的包 -->  <context:component-scan base-package="com.zhy.controllers"></context:component-scan>    <!-- 配置视图解析器 -->  <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">    <!-- 配置前缀 -->    <property name="prefix" value="/WEB-INF/views/"></property>    <!-- 配置后缀 -->    <property name="suffix" value=".jsp"></property>  </bean></beans>

三、编写Controller

package com.zhy.controllers;import org.springframework.stereotype.Controller;import org.springframework.web.bind.annotation.RequestMapping;@Controllerpublic class HelloWorldController {  /*   * 通过视图解析器（ViewResolver）得到实际的物理视图   * 视图解析器的解析规则：prefix + returnvalue + suffix   * 结合本实例，视图解析器的解析出来的物理视图为：/WEB-INF/views/helloworld.jsp   * */  @RequestMapping("/mvc")  public String hello(){        System.out.println("call controller");    return "helloworld";  }}