一个简单的SpringBoot入门程序

1. 使用IDEA构建Maven项目

 <?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 http://maven.apache.org/xsd/maven-4.0.0.xsd">
     <modelVersion>4.0.0</modelVersion>

     <groupId>cn.burgundy</groupId>
     <artifactId>springboot-cheatsheep</artifactId>
     <version>1.0-SNAPSHOT</version>

     <!-- 继承SpringBoot插件 -->
     <parent>
         <groupId>org.springframework.boot</groupId>
         <artifactId>spring-boot-starter-parent</artifactId>
         <version>1.3.3.RELEASE</version>
     </parent>

     <dependencies>
         <!-- 启动springBoot web启动器 -->
         <dependency>
             <groupId>org.springframework.boot</groupId>
             <artifactId>spring-boot-starter-web</artifactId>
         </dependency>
     </dependencies>

     <build>
         <plugins>
             <!-- 使用maven启动springboot -->
             <plugin>
                 <groupId>org.springframework.boot</groupId>
                 <artifactId>spring-boot-maven-plugin</artifactId>
             </plugin>
         </plugins>
     </build>
 </project>

2. 创建SpringBoot启动类

 /**
  * Created by IntelliJ IDEA.
  *
  * @Auther: ShaoHsiung
  * @Date: 2018/8/29 11:11
  * @Title: 一个简单的SpringBoot应用
  * @Description: SpringBoot启动类
  */
 @SpringBootApplication
 public class HelloApp {
     public static void main(String[] args) {
         SpringApplication.run(HelloApp.class, args);
     }
 }

备注:

1) @SpringBootApplication

2) SpringApplication.run(HelloApp.class, args);

3. 创建第一个Controller

 /**
  * Created by IntelliJ IDEA.
  *
  * @Auther: ShaoHsiung
  * @Date: 2018/8/29 11:14
  * @Title: 一个简单的SpringBoot应用
  * @Description: 第一个controller
  */
 @RestController
 public class HelloController {
     @RequestMapping(method = RequestMethod.GET, path = "/hello")
     public String hello() {
         return "Hello SpringBoot";
     }
 }

备注:

1) @RestController: 具备REST API能力, 将每个REST API的返回值自动序列化为JSON格式

2) @RequestMapping(method = RequestMethod.GET, path = "/hello")

4. 使用Maven运行SpringBoot程序

SpringBoot内置服务器

5. 应用启动成功

查看到下面这些信息, 说明启动成功...

6. 访问Web应用