第一个 spring-boot 程序

本例使用 maven 作为项目管理工具

新建 pom.xml 文件，添加 spring-boot-starter-web 依赖：

1 <dependency>
2     <groupId>org.springframework.boot</groupId>
3     <artifactId>spring-boot-starter-web</artifactId>
4     <version>1.5.9.RELEASE</version>
5 </dependency>

pom.xml

 1 <?xml version="1.0" encoding="UTF-8"?>
 2 <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
 3     xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
 4     <modelVersion>4.0.0</modelVersion>
 5 
 6     <groupId>com.wangke</groupId>
 7     <artifactId>spring-boot-helloworld</artifactId>
 8     <version>1.0</version>
 9     
10     <parent>
11         <groupId>org.springframework.boot</groupId>
12         <artifactId>spring-boot-starter-parent</artifactId>
13         <version>1.5.9.RELEASE</version>
14     </parent>
15 
16     <dependencies>
17         <dependency>
18             <groupId>org.springframework.boot</groupId>
19             <artifactId>spring-boot-starter-web</artifactId>
20         </dependency>
21     </dependencies>
22 
23     <properties>
24         <java.version>1.8</java.version>
25     </properties>
26 
27     <build>
28         <plugins>
29             <plugin>
30                 <groupId>org.springframework.boot</groupId>
31                 <artifactId>spring-boot-maven-plugin</artifactId>
32             </plugin>
33         </plugins>
34     </build>
35 
36 </project>
pom.xml

 创建一个控制器

 1 package com.wangke.helloworld;
 2 
 3 import org.springframework.web.bind.annotation.RestController;
 4 import org.springframework.web.bind.annotation.RequestMapping;
 5 
 6 @RestController
 7 public class HelloController {
 8 
 9   @RequestMapping("/")
10   public String index() {
11     return "Hello World!";
12   }
13 }

创建 Application 类

 1 package com.wangke.helloworld;
 2 
 3 import org.springframework.boot.SpringApplication;
 4 import org.springframework.boot.autoconfigure.SpringBootApplication;
 5 
 6 @SpringBootApplication
 7 public class Application {
 8   
 9   public static void main(String[] args) {
10     SpringApplication.run(Application.class, args);
11   }
12 }

 项目结构

运行程序

mvn clean package && java -jar target/spring-boot-helloworld-1.0.jar

或者

mvn spring-boot:run

posted on 2018-01-17 13:47  ^上善若水^  阅读(251)  评论(0)  编辑  收藏  举报

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