IDEA搭建SpringMVC简单接口框架（Maven项目）

1, 新建项目，选择Maven，如图一次选择，最后点击Next

2， 输入GroupId和ArtifactId，点击Next

3，根据需要选择自定义maven配置，点击Next。（①可以直接跳过）

4，根据需要修改项目名称（一般不用修改），点击Finish。（①可以直接跳过）

5，当控制台输出BUILD SUCCESS后，项目创建成功。

6，修改pom.xml，添加依赖包

<dependencies>
  <dependency>
    <groupId>org.springframework</groupId>
    <artifactId>spring-webmvc</artifactId>
    <version>4.3.5.RELEASE</version>
  </dependency>
</dependencies>

　　

7，创建index.jsp【用于启动项目项目时，默认展示页面】

 

8,创建接口类（Controller）

package com.blueStarWei.controller;

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

@RestController
@RequestMapping("/hello")
public class HelloWorld {

    @RequestMapping("/say/{name}")
    public String say(@PathVariable String name){
        return "Hello World, "+name;
    }
}

9，配置applicationContext.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"
       xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-2.0.xsd
                           http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd">

  <context:component-scan base-package="com.blueStarWei.*" />

  <bean id="viewResolver"
        class="org.springframework.web.servlet.view.InternalResourceViewResolver">
    <property name="prefix" value="/WEB-INF/jsp/" />
    <property name="suffix" value=".jsp"/>
  </bean>

</beans>

10，配置web.xml

<?xml version="1.0" encoding="UTF-8"?>
<web-app version="2.4"
         xmlns="http://java.sun.com/xml/ns/j2ee"
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd">

  <!--  DispatcherServlet默认使用WebApplicationContext作为上下文，
      Spring默认配置文件为“/WEB-INF/[servlet名字]-servlet.xml”
   -->
  <servlet>
    <servlet-name>springmvc</servlet-name>
    <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
    <load-on-startup>1</load-on-startup>
  </servlet>
  <servlet-mapping>
    <servlet-name>springmvc</servlet-name>
    <url-pattern>/</url-pattern>
  </servlet-mapping>

</web-app>

11，创建springmvc-servlet.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.xsd http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc.xsd">

    <context:component-scan base-package="com.blueStarWei.*" />
    <mvc:annotation-driven/>
</beans>

12,  配置tomcat.（⑦和⑧可以跳过）

13，项目配置完成，可以启动服务器，（使用浏览器活postman等）进行访问。