SpringBoot Maven项目 Helloworld 测试

SpringBoot

化繁为简，简化配置

SpringBoot官方：http://projects.spring.io/spring-boot/
SpringBoot使用介绍：http://blog.csdn.net/isea533/article/details/50278205

Maven项目使用SpringBoot

建议使用 IDEA ,虽然下面是 Eclipse 测试的例子

配置SpringBoot

pom.xml

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<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/maven-v4_0_0.xsd">     <modelversion>4.0.0</modelversion>     <groupid>com.springboot</groupid>     SpringBootTest</artifactid>     <packaging>war</packaging>     <version>0.0.1-SNAPSHOT</version>     <name>SpringBootTest Maven Webapp</name>     <url>http://maven.apache.org</url>       <properties>         <project.build.sourceencoding>UTF-8</project.build.sourceencoding>         <java.version>1.8</java.version>         <tomcat.version>7.0.55</tomcat.version>     </properties>       <parent>         <groupid>org.springframework.boot</groupid>         spring-boot-starter-parent</artifactid>         <version>1.3.0.RELEASE</version>     </parent>     <dependencies>         <dependency>             <groupid>org.springframework.boot</groupid>             spring-boot-starter-web</artifactid>         </dependency>     </dependencies>   </project>

运行程序

运行main方法

SampleController.java

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package com.hello;   import java.util.Date;   import org.springframework.boot.SpringApplication; import org.springframework.boot.autoconfigure.EnableAutoConfiguration; import org.springframework.boot.autoconfigure.jdbc.DataSourceAutoConfiguration; import org.springframework.web.bind.annotation.RequestMapping; import org.springframework.web.bind.annotation.RestController;   @RestController @EnableAutoConfiguration (exclude={DataSourceAutoConfiguration.class}) public class SampleController {       @RequestMapping("/")     String home() {         return "Hello World!";     }       @RequestMapping("/now")     String hehe() {         return "现在时间：" + (new Date()).toLocaleString();     }       public static void main(String[] args) throws Exception {         SpringApplication.run(SampleController.class, args);     } }

控制台输出：

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.   ____          _            __ _ _  /\\ / ___'_ __ _ _(_)_ __  __ _ \ \ \ \ ( ( )\___ | '_ | '_| | '_ \/ _` | \ \ \ \  \\/  ___)| |_)| | | | | || (_| |  ) ) ) )   '  |____| .__|_| |_|_| |_\__, | / / / /  =========|_|==============|___/=/_/_/_/  :: Spring Boot ::        (v1.3.0.RELEASE)   2016-12-15 16:30:13.765  INFO 20952 --- [           main] com.hello.SampleController               : Starting SampleController on DESKTOP-QSFD0OC with PID 20952 (D:\eclipse4.61\eclipse\workspace\SpringBootTest\target\classes started by Peng in D:\eclipse4.61\eclipse\workspace\SpringBootTest) 2016-12-15 16:30:13.768  INFO 20952 --- [           main] com.hello.SampleController               : No profiles are active 2016-12-15 16:30:13.803  INFO 20952 --- [           main] ationConfigEmbeddedWebApplicationContext : Refreshing org.springframework.boot.context.embedded.AnnotationConfigEmbeddedWebApplicationContext@149494d8: startup date [Thu Dec 15 16:30:13 CST 2016]; root of context hierarchy ...

在浏览器上输入地址http://localhost:8080/

在浏览器上输入地址http://localhost:8080/now

注意事项

Tomcat问题一

在Java Build Path中，不要加入 Tomcat 运行环境的依赖库，已经在pom.xml中指定了 Tomcat 版本（不指定默认为 Tomcat 8.0.28），从 maven 的依赖包中能找到 Tomcat 的jar包，SpringBoot 自己配有 Tomcat 。

可以参考：http://blog.csdn.net/zhang168/article/details/51423905

Tomcat问题二

运行 main 方法，出现 Tomcat 不能启动的错误。如下面的异常信息

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java.net.BindException: Address already in use: bind     at sun.nio.ch.Net.bind0(Native Method) ~[na:1.8.0_91]     at sun.nio.ch.Net.bind(Unknown Source) ~[na:1.8.0_91]     at sun.nio.ch.Net.bind(Unknown Source) ~[na:1.8.0_91] org.apache.catalina.LifecycleException: Failed to start component [Connector[org.apache.coyote.http11.Http11NioProtocol-8080]]   Caused by: org.apache.catalina.LifecycleException: service.getName(): "Tomcat";  Protocol handler start failed     at org.apache.catalina.connector.Connector.startInternal(Connector.java:1014) ~[tomcat-embed-core-7.0.55.jar:7.0.55]     at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150) ~[tomcat-embed-core-7.0.55.jar:7.0.55]     ... 13 common frames omitted Caused by: java.net.BindException: Address already in use: bind    Unable to start embedded Tomcat servlet container    Caused by: java.lang.IllegalStateException: Tomcat connector in failed state

原因是你运行了程序一次，javaw.exe 会占用你的端口，可以结束该进程。重新运行 main 方法