SpringBoot2学习1 环境搭建

╰+哭是因爲堅強的太久メ 2021-09-30 13:36 340阅读 0赞

# 导包 #

<parent>
    		<groupId>org.springframework.boot</groupId>
    		<artifactId>spring-boot-starter-parent</artifactId>
    		<version>2.1.6.RELEASE</version>
    	</parent>
    	
    	<dependencies>
    		<dependency>
    			<groupId>org.springframework.boot</groupId>
    			<artifactId>spring-boot-starter-web</artifactId>
    		</dependency>
    	</dependencies>

# 启动类 #

package com.zz;
    
    import org.springframework.boot.SpringApplication;
    import org.springframework.boot.autoconfigure.SpringBootApplication;
    /**
     * 右键--》run as application  运行正启动类的main方法，就可以启动这个springboot项目。
    SpringBoot 自带了 tomcat， 运行这个main方法 的时候，会同时启动tomcat
     * @author jiyu
     *
     */
    @SpringBootApplication
    public class App {
    
    	public static void main(String[] args) {
    		// TODO Auto-generated method stub
    		SpringApplication.run(App.class, args);
    	}
    
    }

右键–》run as application 运行正启动类的main方法，就可以启动这个springboot项目。  
SpringBoot 自带了 tomcat， 运行这个main方法 的时候，会同时启动tomcat

启动成功的日志

.   ____          _            __ _ _
     /\\ / ___'_ __ _ _(_)_ __  __ _ \ \ \ \
    ( ( )\___ | '_ | '_| | '_ \/ _` | \ \ \ \
     \\/  ___)| |_)| | | | | || (_| |  ) ) ) )
      '  |____| .__|_| |_|_| |_\__, | / / / /
     =========|_|==============|___/=/_/_/_/
     :: Spring Boot ::        (v2.1.6.RELEASE)
    
    2019-08-03 21:27:18.453  INFO 16564 --- [           main] com.zz.App                               : Starting App on DESKTOP-9FM4ENL with PID 16564 (C:\bsea\wp\2019\07\02\SpringBoot2\SpringBootBasic\target\classes started by jiyu in C:\bsea\wp\2019\07\02\SpringBoot2\SpringBootBasic)
    2019-08-03 21:27:18.460  INFO 16564 --- [           main] com.zz.App                               : No active profile set, falling back to default profiles: default
    2019-08-03 21:27:21.273  INFO 16564 --- [           main] o.s.b.w.embedded.tomcat.TomcatWebServer  : Tomcat initialized with port(s): 8080 (http)
    2019-08-03 21:27:21.342  INFO 16564 --- [           main] o.apache.catalina.core.StandardService   : Starting service [Tomcat]
    2019-08-03 21:27:21.343  INFO 16564 --- [           main] org.apache.catalina.core.StandardEngine  : Starting Servlet engine: [Apache Tomcat/9.0.21]
    2019-08-03 21:27:21.496  INFO 16564 --- [           main] o.a.c.c.C.[Tomcat].[localhost].[/]       : Initializing Spring embedded WebApplicationContext
    2019-08-03 21:27:21.496  INFO 16564 --- [           main] o.s.web.context.ContextLoader            : Root WebApplicationContext: initialization completed in 2926 ms
    2019-08-03 21:27:21.736  INFO 16564 --- [           main] o.s.s.concurrent.ThreadPoolTaskExecutor  : Initializing ExecutorService 'applicationTaskExecutor'
    2019-08-03 21:27:21.947  INFO 16564 --- [           main] o.s.b.w.embedded.tomcat.TomcatWebServer  : Tomcat started on port(s): 8080 (http) with context path ''
    2019-08-03 21:27:21.950  INFO 16564 --- [           main] com.zz.App

# 测试controller #

package com.zz.controller;
    
    import org.springframework.web.bind.annotation.RequestMapping;
    import org.springframework.web.bind.annotation.RestController;
    
    @RestController
    public class TestController {
    	
    	@RequestMapping("hello")	
    	public String t1(){
    		return "hello SpringBoot";
    	}
    }

# 测试 #

![在这里插入图片描述][20190803213229988.png]

# 添加 热启动功能 #

STS 或者Eclipse 只需要在pom文件加入一个包，就可以实现热启动

<dependency> <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-devtools</artifactId>
                <optional>true</optional>
            </dependency>

[20190803213229988.png]: /images/20210726/d73f23a16d834ae08f0741c6e6f602bf.png