我的第一个springboot应用+maven依赖管理

第一步：使用Eclipse创建maven工程SpringBootFirst：工程目录如下

第二步:编写依赖文件pom.xml

<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>
  <parent>
    <groupId>com.xzh.springboot</groupId>
    <artifactId>SpringBoot-parent</artifactId>
    <version>0.0.1-SNAPSHOT</version>
  </parent>
  <groupId>com.xzh</groupId>
  <artifactId>SpringBootFirst</artifactId>
  <version>0.0.1-SNAPSHOT</version>
  <packaging>war</packaging>
  <name>SpringBootFirst</name>
  <description>SpringBootFirst  for 20170717</description>

  <dependencies>
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-web</artifactId>
    </dependency>
  </dependencies>
</project>

编写web控制器:SampleController

package me.hello;
import org.springframework.boot.*;
import org.springframework.boot.autoconfigure.*;
import org.springframework.stereotype.*;
import org.springframework.web.bind.annotation.*;

@Controller
@EnableAutoConfiguration
public class SampleController {
    @RequestMapping("/")
    @ResponseBody
    String home()
    {
        return "Hello World!";
    }
    public static void main(String[] args) throws Exception {
        SpringApplication.run(SampleController.class, args);
    }
}

第三步:右击SpringBootFirst工程，选择如下图运行

运行结果如下：

  .   ____          _            __ _ _
 /\\ / ___'_ __ _ _(_)_ __  __ _ \ \ \ \
( ( )\___ | '_ | '_| | '_ \/ _` | \ \ \ \
 \\/  ___)| |_)| | | | | || (_| |  ) ) ) )
  '  |____| .__|_| |_|_| |_\__, | / / / /
 =========|_|==============|___/=/_/_/_/
 :: Spring Boot ::        (v1.5.4.RELEASE)

2017-07-24 11:25:35.788  INFO 8760 --- [           main] me.hello.SampleController                : Starting SampleController on Lenovo-PC with PID 8760 (F:\eclipseworkspace\SpringBootFirst\target\classes started by hengliu in F:\eclipseworkspace\SpringBootFirst)
2017-07-24 11:25:35.791  INFO 8760 --- [           main] me.hello.SampleController                : No active profile set, falling back to default profiles: default
2017-07-24 11:25:35.849  INFO 8760 --- [           main] ationConfigEmbeddedWebApplicationContext : Refreshing org.springframework.boot.context.embedded.AnnotationConfigEmbeddedWebApplicationContext@1e4a7dd4: startup date [Mon Jul 24 11:25:35 CST 2017]; root of context hierarchy
2017-07-24 11:25:38.608  INFO 8760 --- [           main] s.b.c.e.t.TomcatEmbeddedServletContainer : Tomcat initialized with port(s): 8080 (http)
2017-07-24 11:25:38.642  INFO 8760 --- [           main] o.apache.catalina.core.StandardService   : Starting service [Tomcat]
2017-07-24 11:25:38.643  INFO 8760 --- [           main] org.apache.catalina.core.StandardEngine  : Starting Servlet Engine: Apache Tomcat/8.5.15
2017-07-24 11:25:38.849  INFO 8760 --- [ost-startStop-1] o.a.c.c.C.[Tomcat].[localhost].[/]       : Initializing Spring embedded WebApplicationContext
2017-07-24 11:25:38.849  INFO 8760 --- [ost-startStop-1] o.s.web.context.ContextLoader            : Root WebApplicationContext: initialization completed in 3010 ms
2017-07-24 11:25:39.071  INFO 8760 --- [ost-startStop-1] o.s.b.w.servlet.ServletRegistrationBean  : Mapping servlet: 'dispatcherServlet' to [/]
2017-07-24 11:25:39.077  INFO 8760 --- [ost-startStop-1] o.s.b.w.servlet.FilterRegistrationBean   : Mapping filter: 'characterEncodingFilter' to: [/*]
2017-07-24 11:25:39.078  INFO 8760 --- [ost-startStop-1] o.s.b.w.servlet.FilterRegistrationBean   : Mapping filter: 'hiddenHttpMethodFilter' to: [/*]
2017-07-24 11:25:39.079  INFO 8760 --- [ost-startStop-1] o.s.b.w.servlet.FilterRegistrationBean   : Mapping filter: 'httpPutFormContentFilter' to: [/*]
2017-07-24 11:25:39.079  INFO 8760 --- [ost-startStop-1] o.s.b.w.servlet.FilterRegistrationBean   : Mapping filter: 'requestContextFilter' to: [/*]
2017-07-24 11:25:39.719  INFO 8760 --- [           main] s.w.s.m.m.a.RequestMappingHandlerAdapter : Looking for @ControllerAdvice: org.springframework.boot.context.embedded.AnnotationConfigEmbeddedWebApplicationContext@1e4a7dd4: startup date [Mon Jul 24 11:25:35 CST 2017]; root of context hierarchy
2017-07-24 11:25:39.851  INFO 8760 --- [           main] s.w.s.m.m.a.RequestMappingHandlerMapping : Mapped "{[/]}" onto java.lang.String me.hello.SampleController.home()
2017-07-24 11:25:39.855  INFO 8760 --- [           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)
2017-07-24 11:25:39.856  INFO 8760 --- [           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)
2017-07-24 11:25:39.898  INFO 8760 --- [           main] o.s.w.s.handler.SimpleUrlHandlerMapping  : Mapped URL path [/webjars/**] onto handler of type [class org.springframework.web.servlet.resource.ResourceHttpRequestHandler]
2017-07-24 11:25:39.899  INFO 8760 --- [           main] o.s.w.s.handler.SimpleUrlHandlerMapping  : Mapped URL path [/**] onto handler of type [class org.springframework.web.servlet.resource.ResourceHttpRequestHandler]
2017-07-24 11:25:39.954  INFO 8760 --- [           main] o.s.w.s.handler.SimpleUrlHandlerMapping  : Mapped URL path [/**/favicon.ico] onto handler of type [class org.springframework.web.servlet.resource.ResourceHttpRequestHandler]
2017-07-24 11:25:40.144  INFO 8760 --- [           main] o.s.j.e.a.AnnotationMBeanExporter        : Registering beans for JMX exposure on startup
2017-07-24 11:25:40.297  INFO 8760 --- [           main] s.b.c.e.t.TomcatEmbeddedServletContainer : Tomcat started on port(s): 8080 (http)
2017-07-24 11:25:40.304  INFO 8760 --- [           main] me.hello.SampleController                : Started SampleController in 5.157 seconds (JVM running for 6.183)
2017-07-24 11:26:36.857  INFO 8760 --- [nio-8080-exec-2] o.a.c.c.C.[Tomcat].[localhost].[/]       : Initializing Spring FrameworkServlet 'dispatcherServlet'
2017-07-24 11:26:36.858  INFO 8760 --- [nio-8080-exec-2] o.s.web.servlet.DispatcherServlet        : FrameworkServlet 'dispatcherServlet': initialization started
2017-07-24 11:26:36.880  INFO 8760 --- [nio-8080-exec-2] o.s.web.servlet.DispatcherServlet        : FrameworkServlet 'dispatcherServlet': initialization completed in 22 ms

说明运行成功，启动了自带的Tomcat服务器，然后打开浏览器输入:http://localhost:8080/
运行结果如下图: