项目代码如下：

1 package hello; 2  3 import org.springframework.boot.SpringApplication; 4 import org.springframework.boot.autoconfigure.SpringBootApplication; 5  6 @SpringBootApplication  // same as @Configuration @EnableAutoConfiguration @ComponentScan 7  8 public class Application { 9 10     public static void main(String[] args) {11          SpringApplication.run(Application.class, args);12     }13 14 }

1 package hello; 2  3 public class Greeting { 4 private  long id; 5 private  String content; 6 public Greeting(long id, String content) { 7     super(); 8     this.id = id; 9     this.content = content;10 }11 public long getId() {12     return id;13 }14 public void setId(long id) {15     this.id = id;16 }17 public String getContent() {18     return content;19 }20 public void setContent(String content) {21     this.content = content;22 }23 24 }

1 package hello; 2  3 import java.util.concurrent.atomic.AtomicLong; 4  5 import org.springframework.web.bind.annotation.RequestMapping; 6 import org.springframework.web.bind.annotation.RequestParam; 7 import org.springframework.web.bind.annotation.RestController; 8  9 @RestController // shorthand for @Controller and @ResponseBody rolled together10 public class GreetingController {11 12     private static final String template="Hello,%s!";13     private final AtomicLong counter=new AtomicLong();14     15     @RequestMapping("/greeting")16     public Greeting greeting(@RequestParam(value="name",defaultValue="World")String name){17         System.out.println("-------------------------");18         return new Greeting(counter.incrementAndGet(),String.format(template, name));19     }20 }

1 
       2 
      
        4     
       
        4.0.0
        5  6     
       
        com.slp
        7     
       
        restSpringDemo1
        8     
       
        0.1.0
        9 10     
       
        11         
        
         org.springframework.boot
        12         
        
         spring-boot-starter-parent
        13         
        
         1.4.1.RELEASE
        14     
       15 16     
       
        17         
        
         18             
         
          org.springframework.boot
         19             
         
          spring-boot-starter-web
         20         
        21         
        
         22             
         
          org.springframework.boot
         23             
         
          spring-boot-starter-test
         24             
         
          test
         25         
        26         
        
         27             
         
          com.jayway.jsonpath
         28             
         
          json-path
         29             
         
          test
         30         
        31     
       32 33     
       
        34         
        
         1.8
        35     
       36 37 38     
       
        39         
        
         40             
         
          41                 
          
           org.springframework.boot
          42                 
          
           spring-boot-maven-plugin
          43             
         44         
        45     
       46 47     
       
        48         
        
         49             
         
          spring-releases
         50             
         
          https://repo.spring.io/libs-release
         51         
        52     
       53     
       
        54         
        
         55             
         
          spring-releases
         56             
         
          https://repo.spring.io/libs-release
         57         
        58     
       59 
      

在Application.java中run as java application 出现：

1  .   ____          _            __ _ _ 2  /\\ / ___'_ __ _ _(_)_ __  __ _ \ \ \ \ 3 ( ( )\___ | '_ | '_| | '_ \/ _` | \ \ \ \ 4  \\/  ___)| |_)| | | | | || (_| |  ) ) ) ) 5   '  |____| .__|_| |_|_| |_\__, | / / / / 6  =========|_|==============|___/=/_/_/_/ 7  :: Spring Boot ::        (v1.4.1.RELEASE) 8  9 2016-10-13 11:19:16.510  INFO 9864 --- [           main] hello.Application                        : Starting Application on QH-20160418YQMB with PID 9864 (started by sanglp in D:\rest风格的apring项目\restSpringDemo1)10 2016-10-13 11:19:16.525  INFO 9864 --- [           main] hello.Application                        : No active profile set, falling back to default profiles: default11 2016-10-13 11:19:16.713  INFO 9864 --- [           main] ationConfigEmbeddedWebApplicationContext : Refreshing org.springframework.boot.context.embedded.AnnotationConfigEmbeddedWebApplicationContext@72f926e6: startup date [Thu Oct 13 11:19:16 CST 2016]; root of context hierarchy12 2016-10-13 11:19:19.691  INFO 9864 --- [           main] s.b.c.e.t.TomcatEmbeddedServletContainer : Tomcat initialized with port(s): 8080 (http)13 2016-10-13 11:19:19.710  INFO 9864 --- [           main] o.apache.catalina.core.StandardService   : Starting service Tomcat14 2016-10-13 11:19:19.710  INFO 9864 --- [           main] org.apache.catalina.core.StandardEngine  : Starting Servlet Engine: Apache Tomcat/8.0.3515 2016-10-13 11:19:20.148  INFO 9864 --- [ost-startStop-1] org.apache.jasper.servlet.TldScanner     : At least one JAR was scanned for TLDs yet contained no TLDs. Enable debug logging for this logger for a complete list of JARs that were scanned but no TLDs were found in them. Skipping unneeded JARs during scanning can improve startup time and JSP compilation time.16 2016-10-13 11:19:20.148  INFO 9864 --- [ost-startStop-1] o.a.c.c.C.[Tomcat].[localhost].[/]       : Initializing Spring embedded WebApplicationContext17 2016-10-13 11:19:20.148  INFO 9864 --- [ost-startStop-1] o.s.web.context.ContextLoader            : Root WebApplicationContext: initialization completed in 3451 ms18 2016-10-13 11:19:20.382  INFO 9864 --- [ost-startStop-1] o.s.b.w.servlet.ServletRegistrationBean  : Mapping servlet: 'dispatcherServlet' to [/]19 2016-10-13 11:19:20.398  INFO 9864 --- [ost-startStop-1] o.s.b.w.servlet.FilterRegistrationBean   : Mapping filter: 'characterEncodingFilter' to: [/*]20 2016-10-13 11:19:20.398  INFO 9864 --- [ost-startStop-1] o.s.b.w.servlet.FilterRegistrationBean   : Mapping filter: 'hiddenHttpMethodFilter' to: [/*]21 2016-10-13 11:19:20.398  INFO 9864 --- [ost-startStop-1] o.s.b.w.servlet.FilterRegistrationBean   : Mapping filter: 'httpPutFormContentFilter' to: [/*]22 2016-10-13 11:19:20.398  INFO 9864 --- [ost-startStop-1] o.s.b.w.servlet.FilterRegistrationBean   : Mapping filter: 'requestContextFilter' to: [/*]23 2016-10-13 11:19:20.866  INFO 9864 --- [           main] s.w.s.m.m.a.RequestMappingHandlerAdapter : Looking for @ControllerAdvice: org.springframework.boot.context.embedded.AnnotationConfigEmbeddedWebApplicationContext@72f926e6: startup date [Thu Oct 13 11:19:16 CST 2016]; root of context hierarchy24 2016-10-13 11:19:20.986  INFO 9864 --- [           main] s.w.s.m.m.a.RequestMappingHandlerMapping : Mapped "{[/greeting]}" onto public hello.Greeting hello.GreetingController.greeting(java.lang.String)25 2016-10-13 11:19:20.986  INFO 9864 --- [           main] s.w.s.m.m.a.RequestMappingHandlerMapping : Mapped "{[/error]}" onto public org.springframework.http.ResponseEntity
      
       
        > org.springframework.boot.autoconfigure.web.BasicErrorController.error(javax.servlet.http.HttpServletRequest)26 2016-10-13 11:19:20.986  INFO 9864 --- [           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)27 2016-10-13 11:19:21.033  INFO 9864 --- [           main] o.s.w.s.handler.SimpleUrlHandlerMapping  : Mapped URL path [/webjars/**] onto handler of type [class org.springframework.web.servlet.resource.ResourceHttpRequestHandler]28 2016-10-13 11:19:21.033  INFO 9864 --- [           main] o.s.w.s.handler.SimpleUrlHandlerMapping  : Mapped URL path [/**] onto handler of type [class org.springframework.web.servlet.resource.ResourceHttpRequestHandler]29 2016-10-13 11:19:21.095  INFO 9864 --- [           main] o.s.w.s.handler.SimpleUrlHandlerMapping  : Mapped URL path [/**/favicon.ico] onto handler of type [class org.springframework.web.servlet.resource.ResourceHttpRequestHandler]30 2016-10-13 11:19:21.307  INFO 9864 --- [           main] o.s.j.e.a.AnnotationMBeanExporter        : Registering beans for JMX exposure on startup31 2016-10-13 11:19:21.463  INFO 9864 --- [           main] s.b.c.e.t.TomcatEmbeddedServletContainer : Tomcat started on port(s): 8080 (http)32 2016-10-13 11:19:21.479  INFO 9864 --- [           main] hello.Application                        : Started Application in 6.497 seconds (JVM running for 7.83)33 2016-10-13 11:21:46.570  INFO 9864 --- [nio-8080-exec-1] o.a.c.c.C.[Tomcat].[localhost].[/]       : Initializing Spring FrameworkServlet 'dispatcherServlet'34 2016-10-13 11:21:46.570  INFO 9864 --- [nio-8080-exec-1] o.s.web.servlet.DispatcherServlet        : FrameworkServlet 'dispatcherServlet': initialization started35 2016-10-13 11:21:46.622  INFO 9864 --- [nio-8080-exec-1] o.s.web.servlet.DispatcherServlet        : FrameworkServlet 'dispatcherServlet': initialization completed in 51 ms
       
      

表示启动成功，这是就可以访问了 http://localhost:8080/greeting?name=xxb

会出现如下结果：

{"id":3,"content":"Hello,xuxiaobo!"}

这是一个纯java的项目，不需要启动tomcat也可以执行访问

首先你需要建立一个基本的项目，你可以使用任何你喜欢的方式去构造Spring项目，这里使用的是Maven.如果你不熟悉Maven的话请移步 .

创建项目目录结构

在你所选的项目目录中，创建如下的子目录结构；例如在unix系统中使用mkdir -p src/main/java/hello。

└── src    └── main        └── java            └── hello

pom.xml

        
        
        
         4.0.0
         
        
         org.springframework
         
        
         gs-rest-service
         
        
         0.1.0
         
         
         
          org.springframework.boot
          
         
          spring-boot-starter-parent
          
         
          1.4.1.RELEASE
          
         
         
          
          
           org.springframework.boot
           
          
           spring-boot-starter-web
           
          
          
          
           org.springframework.boot
           
          
           spring-boot-starter-test
           
          
           test
           
          
          
          
           com.jayway.jsonpath
           
          
           json-path
           
          
           test
           
          
         
         
         
          1.8
          
         
         
          
           
           
            org.springframework.boot
            
           
            spring-boot-maven-plugin
            
           
          
         
         
          
          
           spring-releases
           
          
           https://repo.spring.io/libs-release
           
          
         
         
          
          
           spring-releases
           
          
           https://repo.spring.io/libs-release
           
          
         
       

Spring Boot的maven插件提供了很多便利的特性：

• 它包含了路径中的所有jar文件，使用“über-jar”。它使得执行和转换服务非常便利。

• 它查询 public static void main() 方法去标志为一个可执行的类

• 它提供了一个内置的匹配Spring boot 依赖的版本，你可以选择任何你希望的版本，但是默认情况下它会选择Boot的版本设置变量。