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  • 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:eclipse4.61eclipseworkspaceSpringBootTest argetclasses started by Peng in D:eclipse4.61eclipseworkspaceSpringBootTest)
    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/

    这里写图片描述

    在浏览器上输入地址http://localhost:8080/now

    这里写图片描述

    注意事项

    Tomcat问题一

    这里写图片描述
    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
    这里写图片描述
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  • 原文地址：https://www.cnblogs.com/cnblog-long/p/7235163.html
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