myeclipse搭建好maven环境后，新建maven项目，项目结构如下：
打开pom.xml文件，添加配置文件，保存时myeclipse会自动去加载需要的jar，过程可能会需要一两分钟：
<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>com.lsk</groupId> <artifactId>mymaven</artifactId> <version>0.0.1-SNAPSHOT</version> <packaging>jar</packaging> <name>mymaven</name> <url>http://maven.apache.org</url> <parent> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-parent</artifactId> <version>1.4.1.RELEASE</version> <relativePath/> </parent> <properties> <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding> </properties> <dependencies> <dependency> <groupId>junit</groupId> <artifactId>junit</artifactId> <version>3.8.1</version> <scope>test</scope> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-web</artifactId> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-test</artifactId> </dependency> </dependencies> <build> <plugins> <plugin> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-maven-plugin</artifactId> </plugin> </plugins> </build> </project>新建GirlApplication.java，名字可以随便起
package com.lsk.mymaven; import org.springframework.boot.SpringApplication; import org.springframework.boot.autoconfigure.SpringBootApplication; @SpringBootApplication public class GirlApplication { public static void main(String[] args) { SpringApplication.run(GirlApplication.class, args); } }然后右键run as,java application，控制台会输出：
. ____ _ __ _ _ /\\ / ___'_ __ _ _(_)_ __ __ _ \ \ \ \ ( ( )\___ | '_ | '_| | '_ \/ _` | \ \ \ \ \\/ ___)| |_)| | | | | || (_| | ) ) ) ) ' |____| .__|_| |_|_| |_\__, | / / / / =========|_|==============|___/=/_/_/_/ :: Spring Boot :: (v1.4.1.RELEASE) 2017-05-04 22:19:36.820 INFO 6380 --- [ main] com.lsk.mymaven.GirlApplication : Starting GirlApplication on lsk-PC with PID 6380 (started by lsk in C:\Users\Administrator\Workspaces\MyEclipse 10\mymaven) 2017-05-04 22:19:36.823 INFO 6380 --- [ main] com.lsk.mymaven.GirlApplication : No active profile set, falling back to default profiles: default 2017-05-04 22:19:36.870 INFO 6380 --- [ main] ationConfigEmbeddedWebApplicationContext : Refreshing org.springframework.boot.context.embedded.AnnotationConfigEmbeddedWebApplicationContext@b427c1: startup date [Thu May 04 22:19:36 CST 2017]; root of context hierarchy 2017-05-04 22:19:38.001 INFO 6380 --- [ main] s.b.c.e.t.TomcatEmbeddedServletContainer : Tomcat initialized with port(s): 8080 (http) 2017-05-04 22:19:38.011 INFO 6380 --- [ main] o.apache.catalina.core.StandardService : Starting service Tomcat 2017-05-04 22:19:38.012 INFO 6380 --- [ main] org.apache.catalina.core.StandardEngine : Starting Servlet Engine: Apache Tomcat/8.5.5 2017-05-04 22:19:38.093 INFO 6380 --- [ost-startStop-1] o.a.c.c.C.[Tomcat].[localhost].[/] : Initializing Spring embedded WebApplicationContext 2017-05-04 22:19:38.093 INFO 6380 --- [ost-startStop-1] o.s.web.context.ContextLoader : Root WebApplicationContext: initialization completed in 1223 ms 2017-05-04 22:19:38.231 INFO 6380 --- [ost-startStop-1] o.s.b.w.servlet.ServletRegistrationBean : Mapping servlet: 'dispatcherServlet' to [/] 2017-05-04 22:19:38.235 INFO 6380 --- [ost-startStop-1] o.s.b.w.servlet.FilterRegistrationBean : Mapping filter: 'characterEncodingFilter' to: [/*] 2017-05-04 22:19:38.235 INFO 6380 --- [ost-startStop-1] o.s.b.w.servlet.FilterRegistrationBean : Mapping filter: 'hiddenHttpMethodFilter' to: [/*] 2017-05-04 22:19:38.235 INFO 6380 --- [ost-startStop-1] o.s.b.w.servlet.FilterRegistrationBean : Mapping filter: 'httpPutFormContentFilter' to: [/*] 2017-05-04 22:19:38.236 INFO 6380 --- [ost-startStop-1] o.s.b.w.servlet.FilterRegistrationBean : Mapping filter: 'requestContextFilter' to: [/*] 2017-05-04 22:19:38.560 INFO 6380 --- [ main] s.w.s.m.m.a.RequestMappingHandlerAdapter : Looking for @ControllerAdvice: org.springframework.boot.context.embedded.AnnotationConfigEmbeddedWebApplicationContext@b427c1: startup date [Thu May 04 22:19:36 CST 2017]; root of context hierarchy 2017-05-04 22:19:38.619 INFO 6380 --- [ main] s.w.s.m.m.a.RequestMappingHandlerMapping : Mapped "{[/hello],methods=[GET]}" onto public java.lang.String com.lsk.mymaven.HelloController.say() 2017-05-04 22:19:38.623 INFO 6380 --- [ main] s.w.s.m.m.a.RequestMappingHandlerMapping : Mapped "{[/error],produces=[text/html]}" onto public org.springframework.web.servlet.ModelAndView org.springframework.boot.autoconfigure.web.BasicErrorController.errorHtml(javax.servlet.http.HttpServletRequest,javax.servlet.http.HttpServletResponse) 2017-05-04 22:19:38.623 INFO 6380 --- [ main] s.w.s.m.m.a.RequestMappingHandlerMapping : Mapped "{[/error]}" onto public org.springframework.http.ResponseEntity<java.util.Map<java.lang.String, java.lang.Object>> org.springframework.boot.autoconfigure.web.BasicErrorController.error(javax.servlet.http.HttpServletRequest) 2017-05-04 22:19:38.652 INFO 6380 --- [ main] o.s.w.s.handler.SimpleUrlHandlerMapping : Mapped URL path [/webjars/**] onto handler of type [class org.springframework.web.servlet.resource.ResourceHttpRequestHandler] 2017-05-04 22:19:38.652 INFO 6380 --- [ main] o.s.w.s.handler.SimpleUrlHandlerMapping : Mapped URL path [/**] onto handler of type [class org.springframework.web.servlet.resource.ResourceHttpRequestHandler] 2017-05-04 22:19:38.695 INFO 6380 --- [ main] o.s.w.s.handler.SimpleUrlHandlerMapping : Mapped URL path [/**/favicon.ico] onto handler of type [class org.springframework.web.servlet.resource.ResourceHttpRequestHandler] 2017-05-04 22:19:38.835 INFO 6380 --- [ main] o.s.j.e.a.AnnotationMBeanExporter : Registering beans for JMX exposure on startup 2017-05-04 22:19:38.888 INFO 6380 --- [ main] s.b.c.e.t.TomcatEmbeddedServletContainer : Tomcat started on port(s): 8080 (http) 2017-05-04 22:19:38.892 INFO 6380 --- [ main] com.lsk.mymaven.GirlApplication : Started GirlApplication in 2.509 seconds (JVM running for 2.755) 2017-05-04 22:19:46.783 INFO 6380 --- [nio-8080-exec-1] o.a.c.c.C.[Tomcat].[localhost].[/] : Initializing Spring FrameworkServlet 'dispatcherServlet' 2017-05-04 22:19:46.783 INFO 6380 --- [nio-8080-exec-1] o.s.web.servlet.DispatcherServlet : FrameworkServlet 'dispatcherServlet': initialization started 2017-05-04 22:19:46.795 INFO 6380 --- [nio-8080-exec-1] o.s.web.servlet.DispatcherServlet : FrameworkServlet 'dispatcherServlet': initialization completed in 12 ms服务器在8080端口启动，浏览器中访问http://127.0.0.1:8080/
此时说明Spring Boot项目启动成功，404只是没有请求到资源
新建HelloController.java:
package com.lsk.mymaven; import org.springframework.web.bind.annotation.RequestMapping; import org.springframework.web.bind.annotation.RequestMethod; import org.springframework.web.bind.annotation.RestController; /** * * @author lsk * */ @RestController public class HelloController { @RequestMapping(value="/hello",method=RequestMethod.GET) public String say(){ return "Hello Spring Boot"; } }重新运行GirlApplication.java，访问http://127.0.0.1:8080/hello 运行成功
需要注意的地方： 肯能会报错：Unsupported major.minor version 51.0 检查jdk版本，编译环境和运行环境jdk版本可能不一致
还有另一种启动方式，命令行进入项目路径下，执行mvn spring-boot:run
