spring boot系列一 demo测试
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1. 参考official guide
http://projects.spring.io/spring-boot/#quick-start
2. 在eclipse 新建 maven工程,具体细节skip,完成后如下所示:
3. POM 文件配置如下:
<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.springboot</groupId><artifactId>springboot</artifactId><version>0.0.1-SNAPSHOT</version><packaging>jar</packaging><name>springboot</name><url>http://maven.apache.org</url><properties><project.build.sourceEncoding>UTF-8</project.build.sourceEncoding></properties><strong><parent><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-parent</artifactId><version>1.2.3.RELEASE</version></parent><dependencies><dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-web</artifactId></dependency></dependencies></strong></project>
maven自动load依赖jar包,jdk应该是要求1.8 version 以上
4. 测试类
package hello;import org.springframework.boot.*;import org.springframework.boot.autoconfigure.*;import org.springframework.stereotype.*;import org.springframework.web.bind.annotation.*;@Controller@EnableAutoConfigurationpublic class SampleController { @RequestMapping("/") @ResponseBody String home() { return "Hello World!"; } public static void main(String[] args) throws Exception { SpringApplication.run(SampleController.class, args); }}
5. 启动测试类,log如下:
. ____ _ __ _ _ /\\ / ___'_ __ _ _(_)_ __ __ _ \ \ \ \( ( )\___ | '_ | '_| | '_ \/ _` | \ \ \ \ \\/ ___)| |_)| | | | | || (_| | ) ) ) ) ' |____| .__|_| |_|_| |_\__, | / / / / =========|_|==============|___/=/_/_/_/ :: Spring Boot :: (v1.2.3.RELEASE)2015-05-05 15:40:33.058 INFO 12356 --- [ main] com.springboot.SampleController : Starting SampleController on A7P-53352-RUHAN with PID 12356 (D:\Workbench\springboot\target\classes started by ruhan in D:\Workbench\springboot)2015-05-05 15:40:33.096 INFO 12356 --- [ main] ationConfigEmbeddedWebApplicationContext : Refreshing org.springframework.boot.context.embedded.AnnotationConfigEmbeddedWebApplicationContext@6ed3ccb2: startup date [Tue May 05 15:40:33 CST 2015]; root of context hierarchy2015-05-05 15:40:33.685 INFO 12356 --- [ main] o.s.b.f.s.DefaultListableBeanFactory : Overriding bean definition for bean 'beanNameViewResolver': replacing [Root bean: class [null]; scope=; abstract=false; lazyInit=false; autowireMode=3; dependencyCheck=0; autowireCandidate=true; primary=false; factoryBeanName=org.springframework.boot.autoconfigure.web.ErrorMvcAutoConfiguration$WhitelabelErrorViewConfiguration; factoryMethodName=beanNameViewResolver; initMethodName=null; destroyMethodName=(inferred); defined in class path resource [org/springframework/boot/autoconfigure/web/ErrorMvcAutoConfiguration$WhitelabelErrorViewConfiguration.class]] with [Root bean: class [null]; scope=; abstract=false; lazyInit=false; autowireMode=3; dependencyCheck=0; autowireCandidate=true; primary=false; factoryBeanName=org.springframework.boot.autoconfigure.web.WebMvcAutoConfiguration$WebMvcAutoConfigurationAdapter; factoryMethodName=beanNameViewResolver; initMethodName=null; destroyMethodName=(inferred); defined in class path resource [org/springframework/boot/autoconfigure/web/WebMvcAutoConfiguration$WebMvcAutoConfigurationAdapter.class]]2015-05-05 15:40:34.646 INFO 12356 --- [ main] s.b.c.e.t.TomcatEmbeddedServletContainer : Tomcat initialized with port(s): 8080 (http)2015-05-05 15:40:34.879 INFO 12356 --- [ main] o.apache.catalina.core.StandardService : Starting service Tomcat2015-05-05 15:40:34.881 INFO 12356 --- [ main] org.apache.catalina.core.StandardEngine : Starting Servlet Engine: Apache Tomcat/8.0.202015-05-05 15:40:35.040 INFO 12356 --- [ost-startStop-1] o.a.c.c.C.[Tomcat].[localhost].[/] : Initializing Spring embedded WebApplicationContext2015-05-05 15:40:35.040 INFO 12356 --- [ost-startStop-1] o.s.web.context.ContextLoader : Root WebApplicationContext: initialization completed in 1947 ms2015-05-05 15:40:35.834 INFO 12356 --- [ost-startStop-1] o.s.b.c.e.ServletRegistrationBean : Mapping servlet: 'dispatcherServlet' to [/]2015-05-05 15:40:35.838 INFO 12356 --- [ost-startStop-1] o.s.b.c.embedded.FilterRegistrationBean : Mapping filter: 'characterEncodingFilter' to: [/*]2015-05-05 15:40:35.839 INFO 12356 --- [ost-startStop-1] o.s.b.c.embedded.FilterRegistrationBean : Mapping filter: 'hiddenHttpMethodFilter' to: [/*]2015-05-05 15:40:36.150 INFO 12356 --- [ main] s.w.s.m.m.a.RequestMappingHandlerAdapter : Looking for @ControllerAdvice: org.springframework.boot.context.embedded.AnnotationConfigEmbeddedWebApplicationContext@6ed3ccb2: startup date [Tue May 05 15:40:33 CST 2015]; root of context hierarchy2015-05-05 15:40:36.235 INFO 12356 --- [ main] s.w.s.m.m.a.RequestMappingHandlerMapping : Mapped "{[/],methods=[],params=[],headers=[],consumes=[],produces=[],custom=[]}" onto java.lang.String com.springboot.SampleController.home()2015-05-05 15:40:36.238 INFO 12356 --- [ main] s.w.s.m.m.a.RequestMappingHandlerMapping : Mapped "{[/error],methods=[],params=[],headers=[],consumes=[],produces=[],custom=[]}" 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)2015-05-05 15:40:36.238 INFO 12356 --- [ main] s.w.s.m.m.a.RequestMappingHandlerMapping : Mapped "{[/error],methods=[],params=[],headers=[],consumes=[],produces=[text/html],custom=[]}" onto public org.springframework.web.servlet.ModelAndView org.springframework.boot.autoconfigure.web.BasicErrorController.errorHtml(javax.servlet.http.HttpServletRequest)2015-05-05 15:40:36.280 INFO 12356 --- [ main] o.s.w.s.handler.SimpleUrlHandlerMapping : Mapped URL path [/webjars/**] onto handler of type [class org.springframework.web.servlet.resource.ResourceHttpRequestHandler]2015-05-05 15:40:36.280 INFO 12356 --- [ main] o.s.w.s.handler.SimpleUrlHandlerMapping : Mapped URL path [/**] onto handler of type [class org.springframework.web.servlet.resource.ResourceHttpRequestHandler]2015-05-05 15:40:36.327 INFO 12356 --- [ main] o.s.w.s.handler.SimpleUrlHandlerMapping : Mapped URL path [/**/favicon.ico] onto handler of type [class org.springframework.web.servlet.resource.ResourceHttpRequestHandler]2015-05-05 15:40:36.415 INFO 12356 --- [ main] o.s.j.e.a.AnnotationMBeanExporter : Registering beans for JMX exposure on startup2015-05-05 15:40:36.472 INFO 12356 --- [ main] s.b.c.e.t.TomcatEmbeddedServletContainer <strong><span style="color:#ff0000;">: Tomcat started on port(s): 808</span></strong>0 (http)2015-05-05 15:40:36.474 INFO 12356 --- [ main] com.springboot.SampleController : Started SampleController in 3.743 seconds (JVM running for 4.443)2015-05-05 15:41:49.620 INFO 12356 --- [nio-8080-exec-1] o.a.c.c.C.[Tomcat].[localhost].[/] : Initializing Spring FrameworkServlet 'dispatcherServlet'2015-05-05 15:41:49.620 INFO 12356 --- [nio-8080-exec-1] o.s.web.servlet.DispatcherServlet : FrameworkServlet 'dispatcherServlet': initialization started2015-05-05 15:41:49.653 INFO 12356 --- [nio-8080-exec-1] o.s.web.servlet.DispatcherServlet : FrameworkServlet 'dispatcherServlet': initialization completed in 33 ms
1. 我们看到spring 集成了tomcat,监听端口为8080,访问tomcate
http://localhost:8080 返回结果
这是我们测试类预期的结果。
@RequestMapping("/")
@ResponseBody
String home() {
return "Hello World!";
}
6 总结
spring boot是什么?有什么特点?
- Create stand-alone Spring applications
- Embed Tomcat, Jetty or Undertow directly (no need to deploy WAR files)
- Provide opinionated 'starter' POMs to simplify your Maven configuration
- Automatically configure Spring whenever possible
- Provide production-ready features such as metrics, health checks and externalized configuration
- Absolutely no code generation and no requirement for XML configuration
其余部分有待进一步研究
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