SpringBoot项目的简单配置

1. 添加依赖

   在pow.xml中加入：

   <?xml version="1.0" encoding="UTF-8"?>
   <project xmlns="http://maven.apache.org/POM/4.0.0"
            xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
            xsi:schemaLocation="http://maven.apache.org/POM/4.0.0
                                   https://maven.apache.org/xsd/maven-4.0.0.xsd"
   >
       <modelVersion>4.0.0</modelVersion>
   
       <groupId>com.example</groupId>
       <artifactId>demo</artifactId>
       <version>0.0.1-SNAPSHOT</version>
       <name>demo</name>
       <description>Demo project for Spring Boot</description>
   
       <properties>
           <java.version>1.8</java.version>
       </properties>
   
   		 <!--父依赖，集成了很多子依赖-->
       <parent>
           <groupId>org.springframework.boot</groupId>
           <artifactId>spring-boot-starter-parent</artifactId>
           <version>2.1.18.RELEASE</version>
           <relativePath/> <!-- lookup parent from repository -->
       </parent>
   
       <dependencies>
           <!--web项目需要使用的-->
           <dependency>
               <groupId>org.springframework.boot</groupId>
               <artifactId>spring-boot-starter-web</artifactId>
           </dependency>
       </dependencies>
   
   		<!--打包插件-->
   	<build>
           <plugins>
               <plugin>
                   <groupId>org.springframework.boot</groupId>
                   <artifactId>spring-boot-maven-plugin</artifactId>
               </plugin>
           </plugins>
   	</build>
   </project>
   

2. 创建程序入口

   创建类DemoApplication.java

   @SpringBootApplication
   public class DemoApplication {
   
       public static void main(String[] args) {
           SpringApplication.run(DemoApplication.class, args);
       }
   
   }
   

3. 创建controller

   在此类同级处创建controller包，在包中创建TestController.java

   @RestController
   public class AController {
   
       @RequestMapping(path = "/helloWorld")
       public String helloWorld(){
           return "Hello World!!!";
       }
   
   }
   

4. 运行程序

   在DemoApplication.java中右键 ==> run 运行main方法

   访问127.0.0.1:8080/helloWorld