通过注解的方式实现一个简单的HelloWorld。
源码
一、新建项目
不同的是springmvc配置文件的命名和路径，此处为src/springmvc.xml
二、配置文件
1、配置web.xml
<?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">
<!-- The front controller of this Spring Web application, responsible for handling all application requests -->
<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>
</web-app>
2、配置springmvc.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:context="http://www.springframework.org/schema/context"
xmlns:mvc="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; @Controller
public 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";
}
}