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首先spring-boot是个服务框架，更加准确来讲是个微服务框架，实际上来说”微“并不“微”，spring-boot包含很多可嵌入的组件，通过这些组件可以来完成我们的服务，
以往我们使用Spring的时候，我们需要首先在pom文件中增加对相关的的依赖（使用gradle也是类似）然后新建Spring相关的配置文件而通常是xml，然后后面加入jetty\tomcat，而现在我们通过spring-boot就可以完成我们这些繁杂的事情，下面来介绍下如何使用spring-boot:
1）首先是我们的pom.xml依赖：
<?xml version="1.0" encoding="UTF-8"?> <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.example</groupId> <artifactId>sping_boot_test</artifactId> <version>0.0.1-SNAPSHOT</version> <!-- Inherit defaults from Spring Boot --> <parent> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-parent</artifactId> <version>1.4.0.BUILD-SNAPSHOT</version> </parent> <!-- Add typical dependencies for a web application --> <dependencies> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-web</artifactId> </dependency> </dependencies> <!-- Package as an executable jar --> <build> <plugins> <plugin> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-maven-plugin</artifactId> </plugin> </plugins> </build> <!-- Add Spring repositories --> <!-- (you don‘t need this if you are using a .RELEASE version) --> <repositories> <repository> <id>spring-snapshots</id> <url>http://repo.spring.io/snapshot</url> <snapshots><enabled>true</enabled></snapshots> </repository> <repository> <id>spring-milestones</id> <url>http://repo.spring.io/milestone</url> </repository> </repositories> <pluginRepositories> <pluginRepository> <id>spring-snapshots</id> <url>http://repo.spring.io/snapshot</url> </pluginRepository> <pluginRepository> <id>spring-milestones</id> <url>http://repo.spring.io/milestone</url> </pluginRepository> </pluginRepositories> </project>
2）然后就可以写我们的代码了：
启动类：
package Example; import org.springframework.boot.SpringApplication; //import org.springframework.boot.autoconfigure.EnableAutoConfiguration; //import org.springframework.context.annotation.ComponentScan; //import org.springframework.context.annotation.Configuration; import org.springframework.boot.autoconfigure.SpringBootApplication; //@Configuration //@EnableAutoConfiguration //@ComponentScan @SpringBootApplication public class Application { public static void main(String[] args) { SpringApplication.run(Application.class, args); } }
controler类：
package Example; import org.springframework.web.bind.annotation.RequestMapping; import org.springframework.web.bind.annotation.RestController; @RestController @RequestMapping(value="users") public class MyRestController { @RequestMapping("/") String home(){ return "Hello World!"; } @RequestMapping("/test") String test(){ return "Hello test!"; } }
package Example; import org.springframework.web.bind.annotation.RequestMapping; import org.springframework.web.bind.annotation.RestController; @RestController public class Example { @RequestMapping("/") String home(){ return "Hello World!"; } @RequestMapping("/test") String test(){ return "Hello test!"; } }
3）启动与运行：
. ____ _ __ _ _ /\\ / ___‘_ __ _ _(_)_ __ __ _ \ \ \ \ ( ( )\___ | ‘_ | ‘_| | ‘_ \/ _` | \ \ \ \ \\/ ___)| |_)| | | | | || (_| | ) ) ) ) ‘ |____| .__|_| |_|_| |_\__, | / / / / =========|_|==============|___/=/_/_/_/ :: Spring Boot :: (v1.4.0.BUILD-SNAPSHOT) 2016-06-04 00:06:11.194 INFO 91890 --- [ main] Example.Application : Starting Application on adeMacBook-Pro.local with PID 91890 (/Users/apple/Documents/JavaDemoWorkSpace/spring_boot_test/target/classes started by apple in /Users/apple/Documents/JavaDemoWorkSpace/spring_boot_test) 2016-06-04 00:06:11.199 INFO 91890 --- [ main] Example.Application : No active profile set, falling back to default profiles: default 2016-06-04 00:06:11.312 INFO 91890 --- [ main] ationConfigEmbeddedWebApplicationContext : Refreshing org.springframework.boot.context.embedded.AnnotationConfigEmbeddedWebApplicationContext@3b1dd4fb: startup date [Sat Jun 04 00:06:11 CST 2016]; root of context hierarchy 2016-06-04 00:06:13.117 INFO 91890 --- [ main] s.b.c.e.t.TomcatEmbeddedServletContainer : Tomcat initialized with port(s): 8080 (http) 2016-06-04 00:06:13.140 INFO 91890 --- [ main] o.apache.catalina.core.StandardService : Starting service Tomcat 2016-06-04 00:06:13.142 INFO 91890 --- [ main] org.apache.catalina.core.StandardEngine : Starting Servlet Engine: Apache Tomcat/8.0.33 2016-06-04 00:06:13.316 INFO 91890 --- [ost-startStop-1] o.a.c.c.C.[Tomcat].[localhost].[/] : Initializing Spring embedded WebApplicationContext 2016-06-04 00:06:13.316 INFO 91890 --- [ost-startStop-1] o.s.web.context.ContextLoader : Root WebApplicationContext: initialization completed in 2008 ms 2016-06-04 00:06:13.743 INFO 91890 --- [ost-startStop-1] o.s.b.w.servlet.ServletRegistrationBean : Mapping servlet: ‘dispatcherServlet‘ to [/] 2016-06-04 00:06:13.748 INFO 91890 --- [ost-startStop-1] o.s.b.w.servlet.FilterRegistrationBean : Mapping filter: ‘characterEncodingFilter‘ to: [/*] 2016-06-04 00:06:13.748 INFO 91890 --- [ost-startStop-1] o.s.b.w.servlet.FilterRegistrationBean : Mapping filter: ‘hiddenHttpMethodFilter‘ to: [/*] 2016-06-04 00:06:13.748 INFO 91890 --- [ost-startStop-1] o.s.b.w.servlet.FilterRegistrationBean : Mapping filter: ‘httpPutFormContentFilter‘ to: [/*] 2016-06-04 00:06:13.749 INFO 91890 --- [ost-startStop-1] o.s.b.w.servlet.FilterRegistrationBean : Mapping filter: ‘requestContextFilter‘ to: [/*] 2016-06-04 00:06:14.000 INFO 91890 --- [ main] s.w.s.m.m.a.RequestMappingHandlerAdapter : Looking for @ControllerAdvice: org.springframework.boot.context.embedded.AnnotationConfigEmbeddedWebApplicationContext@3b1dd4fb: startup date [Sat Jun 04 00:06:11 CST 2016]; root of context hierarchy 2016-06-04 00:06:14.155 INFO 91890 --- [ main] s.w.s.m.m.a.RequestMappingHandlerMapping : Mapped "{[/]}" onto java.lang.String Example.Example.home() 2016-06-04 00:06:14.157 INFO 91890 --- [ main] s.w.s.m.m.a.RequestMappingHandlerMapping : Mapped "{[/test]}" onto java.lang.String Example.Example.test() 2016-06-04 00:06:14.160 INFO 91890 --- [ main] s.w.s.m.m.a.RequestMappingHandlerMapping : Mapped "{[/users/]}" onto java.lang.String Example.MyRestController.home() 2016-06-04 00:06:14.161 INFO 91890 --- [ main] s.w.s.m.m.a.RequestMappingHandlerMapping : Mapped "{[/users/test]}" onto java.lang.String Example.MyRestController.test() 2016-06-04 00:06:14.165 INFO 91890 --- [ 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) 2016-06-04 00:06:14.165 INFO 91890 --- [ 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) 2016-06-04 00:06:14.299 INFO 91890 --- [ main] o.s.w.s.handler.SimpleUrlHandlerMapping : Mapped URL path [/webjars/**] onto handler of type [class org.springframework.web.servlet.resource.ResourceHttpRequestHandler] 2016-06-04 00:06:14.299 INFO 91890 --- [ main] o.s.w.s.handler.SimpleUrlHandlerMapping : Mapped URL path [/**] onto handler of type [class org.springframework.web.servlet.resource.ResourceHttpRequestHandler] 2016-06-04 00:06:14.387 INFO 91890 --- [ main] o.s.w.s.handler.SimpleUrlHandlerMapping : Mapped URL path [/**/favicon.ico] onto handler of type [class org.springframework.web.servlet.resource.ResourceHttpRequestHandler] 2016-06-04 00:06:14.969 INFO 91890 --- [ main] o.s.j.e.a.AnnotationMBeanExporter : Registering beans for JMX exposure on startup 2016-06-04 00:06:15.070 INFO 91890 --- [ main] s.b.c.e.t.TomcatEmbeddedServletContainer : Tomcat started on port(s): 8080 (http) 2016-06-04 00:06:15.077 INFO 91890 --- [ main] Example.Application : Started Application in 4.612 seconds (JVM running for 5.156)
访问应用：
http://127.0.0.1:8080/users/test
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原文地址：http://www.cnblogs.com/super-d2/p/5557967.html
