第一个Spring Boot应用

我不是女神ヾ 2021-07-24 15:58 421阅读 0赞

**一 编写pom.xml**

<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>org.fkit</groupId>
         <artifactId>hellotest</artifactId>
         <version>0.0.1-SNAPSHOT</version>
         <packaging>jar</packaging>
         <name>hellotest</name>
         <url>http://maven.apache.org</url>
         
         <parent>
               <groupId>org.springframework.boot</groupId>
               <artifactId>spring-boot-starter-parent</artifactId>
               <version>2.0.0.RELEASE</version>
               <relativePath />
         </parent>
         <properties>
               <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
               <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
               <java.version>1.8</java.version>
         </properties>
         <dependencies>
               
               <dependency>
                    <groupId>org.springframework.boot</groupId>
                    <artifactId>spring-boot-starter-web</artifactId>
               </dependency>
               <dependency>
                    <groupId>junit</groupId>
                    <artifactId>junit</artifactId>
                    <scope>test</scope>
               </dependency>
         </dependencies>
    </project>

**二 编写控制器**

package org.fkit.hellotest;
    
    
    import org.springframework.web.bind.annotation.RequestMapping;
    import org.springframework.web.bind.annotation.RestController;
    
    //RestController相当于SpringMVC中的 @Controller + @ResponseBody
    @RestController
    public class HelloController {
        // 映射"/hello"请求
        @RequestMapping("/hello")
        public String hello(){
            return "Hello Spring Boot!";
        }
    }

**三 编写启动类**

package org.fkit.hellotest;
    import org.springframework.boot.SpringApplication;
    import  org.springframework.boot.autoconfigure.SpringBootApplication;
    //@SpringBootApplication指定这是一个 spring boot的应用程序.
    @SpringBootApplication
    public class App
    {
        public static void main( String[] args )
        {
          // SpringApplication 用于从main方法启动Spring应用的类。
            SpringApplication.run(App.class, args);
        }
    }

**四 测试**

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2NoZW5ncWl1bWluZw_size_16_color_FFFFFF_t_70][]

[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2NoZW5ncWl1bWluZw_size_16_color_FFFFFF_t_70]: /images/20210724/c6c8f0acfadb4308964e87e35197e1c1.png