Spring MVC 之 Hello World

1.新建一个动态web项目

2.web.xml编写

<?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</display-name>

 

<!-- 配置DispatchcerServlet -->

<servlet>

<servlet-name>springDispatcherServlet</servlet-name>

<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>

<!--

配置Spring mvc下的配置文件的位置和名称

也可以使用：默认的配置 路径为 WEB-INF/<servlet-name>-service.xml

-->

<init-param>

<param-name>contextConfigLocation</param-name>

<param-value>classpath:springmvc.xml</param-value>

</init-param>

<!-- 加载时被创建 -->

<load-on-startup>1</load-on-startup>

</servlet>

 

<servlet-mapping>

<servlet-name>springDispatcherServlet</servlet-name>

<url-pattern>/</url-pattern>

</servlet-mapping>

 

<welcome-file-list>

<welcome-file>index.jsp</welcome-file>

</welcome-file-list>

</web-app>

 

3.springmvc.xml编写

<?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"

xsi:schemaLocation="http://www.springframework.org/schema/beans

http://www.springframework.org/schema/beans/spring-beans.xsd

http://www.springframework.org/schema/mvc

http://www.springframework.org/schema/mvc/spring-mvc.xsd

http://www.springframework.org/schema/context

http://www.springframework.org/schema/context/spring-context.xsd">

 

<!-- 配置自动扫描包 @Controller @RequestMapping -->

<context:component-scan base-package="com.sguigu.springmvc.handlers" />

 

<!-- 配置视图解析器 -->

<bean

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>

</beans>

 

4.controller编写

package com.sguigu.springmvc.handlers;

import org.springframework.stereotype.Controller;

import org.springframework.web.bind.annotation.RequestMapping;

 

@Controller

public class HelloWorld {

 

/**

* @description hello world

* @return String 返回类型

* @author hxt

*/

@RequestMapping("/helloworld")

public String hello(){

System.out.println("-----success---------");

return "helloworld";

}

}