spring-boot 之 helloword

初识 spring-boot

1. 参考文档

   spring-boot官方文档

2. 示例环境

   • jdk 1.8
   • spring-boot 2.0.0
   • idea2015
   • OS: Windows10

3. 新建一个Maven Java 工程

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4. 向pom.xml添加Spring Boot Maven依赖

   
   <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>4.0.0modelVersion>
   
       <groupId>com.examplegroupId>
       <artifactId>myprojectartifactId>
       <version>0.0.1-SNAPSHOTversion>
   
       
       <parent>
           <groupId>org.springframework.bootgroupId>
           <artifactId>spring-boot-starter-parentartifactId>
           <version>2.0.0.BUILD-SNAPSHOTversion>
       parent>
   
       
       <dependencies>
           <dependency>
               <groupId>org.springframework.bootgroupId>
               <artifactId>spring-boot-starter-webartifactId>
           dependency>
       dependencies>
   
       
       <build>
           <plugins>
               <plugin>
                   <groupId>org.springframework.bootgroupId>
                   <artifactId>spring-boot-maven-pluginartifactId>
               plugin>
           plugins>
       build>
   
       
       
       <repositories>
           <repository>
               <id>spring-snapshotsid>
               <url>http://repo.spring.io/snapshoturl>
               <snapshots><enabled>trueenabled>snapshots>
           repository>
           <repository>
               <id>spring-milestonesid>
               <url>http://repo.spring.io/milestoneurl>
           repository>
       repositories>
       <pluginRepositories>
           <pluginRepository>
               <id>spring-snapshotsid>
               <url>http://repo.spring.io/snapshoturl>
           pluginRepository>
           <pluginRepository>
               <id>spring-milestonesid>
               <url>http://repo.spring.io/milestoneurl>
           pluginRepository>
       pluginRepositories>
   project>

5. 编写启动类

   import org.springframework.boot.SpringApplication;
   import org.springframework.boot.autoconfigure.EnableAutoConfiguration;
   import org.springframework.web.bind.annotation.RequestMapping;
   import org.springframework.web.bind.annotation.RestController;
   
   @RestController
   @EnableAutoConfiguration
   public class Example {
   
       @RequestMapping("/")
       String home() {
           return "Hello World!";
       }
   
       public static void main(String[] args) throws Exception {
           SpringApplication.run(Example.class, args);
       }
   
   }

6. 运行程序

   • 在idea运行程

     

   • 正常启动

     

   • 测试