使用Spring Boot来加速Java web项目的开发

最新推荐文章于 2025-11-27 10:55:11 发布

最新推荐文章于 2025-11-27 10:55:11 发布 · 160 阅读

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我想，现在企业级的Java web项目应该或多或少都会使用到Spring框架的。

回首我们以前使用Spring框架的时候，我们需要首先在（如果你使用Maven的话）pom文件中增加对相关的的依赖（使用gradle来构建的话基本也一样）然后新建Spring相关的xml文件，而且往往那些xml文件还不会少。然后继续使用tomcat或者jetty作为容器来运行这个工程。基本上每次创建一个新的项目都是这么一个流程，而我们有时候仅仅想快速的创建一个Spring web工程来测试一些东西，或者是希望能节省时间。

现在我们使用Spring Boot就可以快速的做到这些了。

我们先来看一个非常简单的使用Spring boot的例子吧：

1.　　我们创建一个Maven工程，假定工程名字为spring-boot，然后我们在pom.xml文件中加入依赖：

<dependency>

<groupId>org.springframework.boot</groupId>

<artifactId>spring-boot-starter-web</artifactId>

<version>1.0.2.RELEASE</version>
</dependency>

2.　　新建一个Controller来接受处理我们的请求：

importorg.springframework.boot.SpringApplication;

importorg.springframework.boot.autoconfigure.EnableAutoConfiguration;

importorg.springframework.stereotype.Controller;

importorg.springframework.web.bind.annotation.RequestMapping;

importorg.springframework.web.bind.annotation.RequestMethod;

importorg.springframework.web.bind.annotation.ResponseBody;
/**

* Created by wenchao.ren on 2014/4/26.

*/
@Controller
@EnableAutoConfiguration

publicclassSimpleController {

@RequestMapping(value ="/hello", method = RequestMethod.GET)

@ResponseBody

publicString hello(){

return"hello world";

}

publicstaticvoidmain(String[] args) {

SpringApplication.run(SimpleController.class, args);

}
}

相信大家已经看到了这个Controller有一个main方法，不要急，我们直接运行这个main方法：

. ____ _ __ _ _

/\\ / ___'_ __ _ _(_)_ __ __ _ \ \ \ \

( ( )\___ |'_ | '_| | '_ \/ _` | \ \ \ \

\\/ ___)| |_)| | | | | || (_| | ) ) ) )

' |____| .__|_| |_|_| |_\__, | / / / /

=========|_|==============|___/=/_/_/_/

:: Spring Boot :: (v1.0.2.RELEASE)

2014-04-2622:54:40.985INFO7236--- [ main] c.r.spring.boot.SimpleController : Starting SimpleController on rollen with PID7236(D:\workspace\GitHub\SpringDemo\spring-boot\target\classes started by wenchao.ren in D:\workspace\GitHub\SpringDemo\spring-boot)

2014-04-2622:54:41.008INFO7236--- [ main] ationConfigEmbeddedWebApplicationContext : Refreshing org.springframework.boot.context.embedded.AnnotationConfigEmbeddedWebApplicationContext@50de0926: startup date [Sat Apr2622:54:41CST2014]; root of context hierarchy

2014-04-2622:54:41.583INFO7236--- [ main] .t.TomcatEmbeddedServletContainerFactory : Server initialized with port:8080

2014-04-2622:54:41.706INFO7236--- [ main] o.apache.catalina.core.StandardService : Starting service Tomcat

2014-04-2622:54:41.706INFO7236--- [ main] org.apache.catalina.core.StandardEngine : Starting Servlet Engine: Apache Tomcat/7.0.52

2014-04-2622:54:41.785INFO7236--- [ost-startStop-1] o.a.c.c.C.[Tomcat].[localhost].[/] : Initializing Spring embedded WebApplicationContext

2014-04-2622:54:41.785INFO7236--- [ost-startStop-1] o.s.web.context.ContextLoader : Root WebApplicationContext: initialization completed in779ms

2014-04-2622:54:42.055INFO7236--- [ost-startStop-1] o.s.b.c.e.ServletRegistrationBean : Mapping servlet:'dispatcherServlet'to [/]

2014-04-2622:54:42.057INFO7236--- [ost-startStop-1] o.s.b.c.embedded.FilterRegistrationBean : Mapping filter:'hiddenHttpMethodFilter'to: [/*]

2014-04-26 22:54:42.289 INFO 7236 --- [ main] o.s.w.s.handler.SimpleUrlHandlerMapping : Mapped URL path [/**/favicon.ico] onto handler of type [classorg.springframework.web.servlet.resource.ResourceHttpRequestHandler]

2014-04-2622:54:42.368INFO7236--- [ main] s.w.s.m.m.a.RequestMappingHandlerMapping : Mapped"{[/hello],methods=[GET],params=[],headers=[],consumes=[],produces=[],custom=[]}"ontopublicjava.lang.String com.rollenholt.spring.boot.SimpleController.hello()

2014-04-2622:54:42.376INFO7236--- [ main] o.s.w.s.handler.SimpleUrlHandlerMapping : Mapped URL path [/webjars/**] onto handler of type [classorg.springframework.web.servlet.resource.ResourceHttpRequestHandler]

2014-04-2622:54:42.377INFO7236--- [ main] o.s.w.s.handler.SimpleUrlHandlerMapping : Mapped URL path [/**] onto handler of type [classorg.springframework.web.servlet.resource.ResourceHttpRequestHandler]

2014-04-2622:54:42.447INFO7236--- [ main] o.s.j.e.a.AnnotationMBeanExporter : Registering beansforJMX exposure on startup

2014-04-2622:54:42.459INFO7236--- [ main] s.b.c.e.t.TomcatEmbeddedServletContainer : Tomcat started on port(s):8080/http

2014-04-2622:54:42.460INFO7236--- [ main] c.r.spring.boot.SimpleController : Started SimpleController in1.675seconds (JVM runningfor1.944)

2014-04-2622:54:54.963INFO7236--- [nio-8080-exec-1] o.a.c.c.C.[Tomcat].[localhost].[/] : Initializing Spring FrameworkServlet'dispatcherServlet'

2014-04-2622:54:54.963INFO7236--- [nio-8080-exec-1] o.s.web.servlet.DispatcherServlet : FrameworkServlet'dispatcherServlet': initialization started

2014-04-2622:54:54.971INFO7236--- [nio-8080-exec-1] o.s.web.servlet.DispatcherServlet : FrameworkServlet'dispatcherServlet': initialization completed in8ms