spring-boot初识-Maven构建

新建一个Maven工程

在pom.xml文件中添加如下配置

<parent>
    <groupId>org.springframework.bootgroupId>
    <artifactId>spring-boot-starter-parentartifactId>
    <version>1.5.4.RELEASEversion>
parent>
<dependencies>
    <dependency>
        <groupId>org.springframework.bootgroupId>
        <artifactId>spring-boot-starter-webartifactId>
    dependency>
dependencies>
<build>
    <plugins>
        <plugin>
            <groupId>org.springframework.bootgroupId>
            <artifactId>spring-boot-maven-pluginartifactId>
        plugin>
    plugins>
build>

创建Application类

此类将作为spring-boot的启动入口

package com.laonie.springboot.demo;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.context.annotation.ComponentScan;

/**
 * Created by niejiuqian on 2017/9/9.
 */
@SpringBootApplication
@ComponentScan(basePackages = "com.laonie")
public class Application {
    public static void main(String[] args) {
        SpringApplication.run(Application.class,args);
    }
}

启动main方法

输出如下日志，则说明启动成功

"C:\Program Files\Java\jdk1.8.0_131\bin\java"
-agentlib:jdwp=transport=dt_socket,address=127.0.0.1:55442,suspend=y,server=n -Dfile.encoding=UTF-8 -classpath "C:\Program Files\Java\jdk1.8.0_131\jre\lib\charsets.jar;C:\Program Files\Java\jdk1.8.0_131\jre\lib\deploy.jar;C:\Program Files\Java\jdk1.8.0_131\jre\lib\ext\access-bridge-64.jar;C:\Program Files\Java\jdk1.8.0_131\jre\lib\ext\cldrdata.jar;C:\Program Files\Java\jdk1.8.0_131\jre\lib\ext\dnsns.jar;C:\Program Files\Java\jdk1.8.0_131\jre\lib\ext\jaccess.jar;C:\Program Files\Java\jdk1.8.0_131\jre\lib\ext\jfxrt.jar;C:\Program Files\Java\jdk1.8.0_131\jre\lib\ext\localedata.jar;C:\Program Files\Java\jdk1.8.0_131\jre\lib\ext\nashorn.jar;C:\Program Files\Java\jdk1.8.0_131\jre\lib\ext\sunec.jar;C:\Program Files\Java\jdk1.8.0_131\jre\lib\ext\sunjce_provider.jar;C:\Program Files\Java\jdk1.8.0_131\jre\lib\ext\sunmscapi.jar;C:\Program Files\Java\jdk1.8.0_131\jre\lib\ext\sunpkcs11.jar;C:\Program Files\Java\jdk1.8.0_131\jre\lib\ext\zipfs.jar;C:\Program Files\Java\jdk1.8.0_131\jre\lib\javaws.jar;C:\Program Files\Java\jdk1.8.0_131\jre\lib\jce.jar;C:\Program Files\Java\jdk1.8.0_131\jre\lib\jfr.jar;C:\Program Files\Java\jdk1.8.0_131\jre\lib\jfxswt.jar;C:\Program Files\Java\jdk1.8.0_131\jre\lib\jsse.jar;C:\Program Files\Java\jdk1.8.0_131\jre\lib\management-agent.jar;C:\Program Files\Java\jdk1.8.0_131\jre\lib\plugin.jar;C:\Program Files\Java\jdk1.8.0_131\jre\lib\resources.jar;C:\Program Files\Java\jdk1.8.0_131\jre\lib\rt.jar;E:\IdeaProjects\springbootdemo\target\classes;D:\application\Maven\repository\org\springframework\boot\spring-boot-starter-web\1.5.4.RELEASE\spring-boot-starter-web-1.5.4.RELEASE.jar;D:\application\Maven\repository\org\springframework\boot\spring-boot-starter\1.5.4.RELEASE\spring-boot-starter-1.5.4.RELEASE.jar;D:\application\Maven\repository\org\springframework\boot\spring-boot\1.5.4.RELEASE\spring-boot-1.5.4.RELEASE.jar;D:\application\Maven\repository\org\springframework\boot\spring-boot-autoconfigure\1.5.4.RELEASE\spring-boot-autoconfigure-1.5.4.RELEASE.jar;D:\application\Maven\repository\org\springframework\boot\spring-boot-starter-logging\1.5.4.RELEASE\spring-boot-starter-logging-1.5.4.RELEASE.jar;D:\application\Maven\repository\ch\qos\logback\logback-classic\1.1.11\logback-classic-1.1.11.jar;D:\application\Maven\repository\ch\qos\logback\logback-core\1.1.11\logback-core-1.1.11.jar;D:\application\Maven\repository\org\slf4j\slf4j-api\1.7.25\slf4j-api-1.7.25.jar;D:\application\Maven\repository\org\slf4j\jcl-over-slf4j\1.7.25\jcl-over-slf4j-1.7.25.jar;D:\application\Maven\repository\org\slf4j\jul-to-slf4j\1.7.25\jul-to-slf4j-1.7.25.jar;D:\application\Maven\repository\org\slf4j\log4j-over-slf4j\1.7.25\log4j-over-slf4j-1.7.25.jar;D:\application\Maven\repository\org\springframework\spring-core\4.3.9.RELEASE\spring-core-4.3.9.RELEASE.jar;D:\application\Maven\repository\org\yaml\snakeyaml\1.17\snakeyaml-1.17.jar;D:\application\Maven\repository\org\springframework\boot\spring-boot-starter-tomcat\1.5.4.RELEASE\spring-boot-starter-tomcat-1.5.4.RELEASE.jar;D:\application\Maven\repository\org\apache\tomcat\embed\tomcat-embed-core\8.5.15\tomcat-embed-core-8.5.15.jar;D:\application\Maven\repository\org\apache\tomcat\embed\tomcat-embed-el\8.5.15\tomcat-embed-el-8.5.15.jar;D:\application\Maven\repository\org\apache\tomcat\embed\tomcat-embed-websocket\8.5.15\tomcat-embed-websocket-8.5.15.jar;D:\application\Maven\repository\org\hibernate\hibernate-validator\5.3.5.Final\hibernate-validator-5.3.5.Final.jar;D:\application\Maven\repository\javax\validation\validation-api\1.1.0.Final\validation-api-1.1.0.Final.jar;D:\application\Maven\repository\org\jboss\logging\jboss-logging\3.3.1.Final\jboss-logging-3.3.1.Final.jar;D:\application\Maven\repository\com\fasterxml\classmate\1.3.3\classmate-1.3.3.jar;D:\application\Maven\repository\com\fasterxml\jackson\core\jackson-databind\2.8.8\jackson-databind-2.8.8.jar;D:\application\Maven\repository\com\fasterxml\jackson\core\jackson-annotations\2.8.0\jackson-annotations-2.8.0.jar;D:\application\Maven\repository\com\fasterxml\jackson\core\jackson-core\2.8.8\jackson-core-2.8.8.jar;D:\application\Maven\repository\org\springframework\spring-web\4.3.9.RELEASE\spring-web-4.3.9.RELEASE.jar;D:\application\Maven\repository\org\springframework\spring-aop\4.3.9.RELEASE\spring-aop-4.3.9.RELEASE.jar;D:\application\Maven\repository\org\springframework\spring-beans\4.3.9.RELEASE\spring-beans-4.3.9.RELEASE.jar;D:\application\Maven\repository\org\springframework\spring-context\4.3.9.RELEASE\spring-context-4.3.9.RELEASE.jar;D:\application\Maven\repository\org\springframework\spring-webmvc\4.3.9.RELEASE\spring-webmvc-4.3.9.RELEASE.jar;D:\application\Maven\repository\org\springframework\spring-expression\4.3.9.RELEASE\spring-expression-4.3.9.RELEASE.jar;C:\Program Files\JetBrains\IntelliJ IDEA 2017.1.4\lib\idea_rt.jar" com.laonie.springboot.demo.Application
Connected to the target VM, address: '127.0.0.1:55442', transport: 'socket'

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

2017-09-09 18:25:01.384  INFO 17008 --- [           main] com.laonie.springboot.demo.Application   : Starting Application on PC-6213 with PID 17008 (E:\IdeaProjects\springbootdemo\target\classes started by niejiuqian in E:\IdeaProjects\springbootdemo)
2017-09-09 18:25:01.388  INFO 17008 --- [           main] com.laonie.springboot.demo.Application   : No active profile set, falling back to default profiles: default
2017-09-09 18:25:01.503  INFO 17008 --- [           main] ationConfigEmbeddedWebApplicationContext : Refreshing org.springframework.boot.context.embedded.AnnotationConfigEmbeddedWebApplicationContext@77eca502: startup date [Sat Sep 09 18:25:01 CST 2017]; root of context hierarchy
2017-09-09 18:25:05.684  INFO 17008 --- [           main] s.b.c.e.t.TomcatEmbeddedServletContainer : Tomcat initialized with port(s): 8080 (http)
2017-09-09 18:25:05.698  INFO 17008 --- [           main] o.apache.catalina.core.StandardService   : Starting service [Tomcat]
2017-09-09 18:25:05.699  INFO 17008 --- [           main] org.apache.catalina.core.StandardEngine  : Starting Servlet Engine: Apache Tomcat/8.5.15
2017-09-09 18:25:05.848  INFO 17008 --- [ost-startStop-1] o.a.c.c.C.[Tomcat].[localhost].[/]       : Initializing Spring embedded WebApplicationContext
2017-09-09 18:25:05.848  INFO 17008 --- [ost-startStop-1] o.s.web.context.ContextLoader            : Root WebApplicationContext: initialization completed in 4349 ms
2017-09-09 18:25:06.043  INFO 17008 --- [ost-startStop-1] o.s.b.w.servlet.ServletRegistrationBean  : Mapping servlet: 'dispatcherServlet' to [/]
2017-09-09 18:25:06.046  INFO 17008 --- [ost-startStop-1] o.s.b.w.servlet.FilterRegistrationBean   : Mapping filter: 'characterEncodingFilter' to: [/*]
2017-09-09 18:25:06.047  INFO 17008 --- [ost-startStop-1] o.s.b.w.servlet.FilterRegistrationBean   : Mapping filter: 'hiddenHttpMethodFilter' to: [/*]
2017-09-09 18:25:06.047  INFO 17008 --- [ost-startStop-1] o.s.b.w.servlet.FilterRegistrationBean   : Mapping filter: 'httpPutFormContentFilter' to: [/*]
2017-09-09 18:25:06.047  INFO 17008 --- [ost-startStop-1] o.s.b.w.servlet.FilterRegistrationBean   : Mapping filter: 'requestContextFilter' to: [/*]
2017-09-09 18:25:06.393  INFO 17008 --- [           main] s.w.s.m.m.a.RequestMappingHandlerAdapter : Looking for @ControllerAdvice: org.springframework.boot.context.embedded.AnnotationConfigEmbeddedWebApplicationContext@77eca502: startup date [Sat Sep 09 18:25:01 CST 2017]; root of context hierarchy
2017-09-09 18:25:06.478  INFO 17008 --- [           main] s.w.s.m.m.a.RequestMappingHandlerMapping : Mapped "{[/hello/{name}]}" onto public java.lang.String com.laonie.springboot.demo.controller.HelloController.sayHello(java.lang.String)
2017-09-09 18:25:06.481  INFO 17008 --- [           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)
2017-09-09 18:25:06.482  INFO 17008 --- [           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)
2017-09-09 18:25:06.537  INFO 17008 --- [           main] o.s.w.s.handler.SimpleUrlHandlerMapping  : Mapped URL path [/webjars/**] onto handler of type [class org.springframework.web.servlet.resource.ResourceHttpRequestHandler]
2017-09-09 18:25:06.537  INFO 17008 --- [           main] o.s.w.s.handler.SimpleUrlHandlerMapping  : Mapped URL path [/**] onto handler of type [class org.springframework.web.servlet.resource.ResourceHttpRequestHandler]
2017-09-09 18:25:06.592  INFO 17008 --- [           main] o.s.w.s.handler.SimpleUrlHandlerMapping  : Mapped URL path [/**/favicon.ico] onto handler of type [class org.springframework.web.servlet.resource.ResourceHttpRequestHandler]
2017-09-09 18:25:06.890  INFO 17008 --- [           main] o.s.j.e.a.AnnotationMBeanExporter        : Registering beans for JMX exposure on startup
2017-09-09 18:25:06.979  INFO 17008 --- [           main] s.b.c.e.t.TomcatEmbeddedServletContainer : Tomcat started on port(s): 8080 (http)
2017-09-09 18:25:06.986  INFO 17008 --- [           main] com.laonie.springboot.demo.Application   : Started Application in 6.214 seconds (JVM running for 6.858)

创建一个Controller类

package com.laonie.springboot.demo.controller;

import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.ResponseBody;

/**
 * Created by niejiuqian on 2017/9/9.
 */
@Controller
@RequestMapping("/hello")
public class HelloController {
    @RequestMapping("/{name}")
    @ResponseBody
    public String sayHello(@PathVariable("name") String name){
        return "hello" + name;
    }
}

重新启动spring-boot

打开浏览器输入http://localhost:8080/hello/loanie
将输出：hellolaonie