Spring Boot入门===Hello World

    xiaoxiao2022-06-30  47

    http://www.cnblogs.com/liangblog/p/5207855.html

         昨天无意间看到Spring Boot ,今天又了解了一下,试着写一个Hello World!  今天看了半天,最后还是要用Maven最方便!以下:

        一、工具 

           JDK1.7

           Eclipse

           Maven

           这里Eclipse集成Maven的这一步就省了!

       二、编码

          新建Maven Project 命名为:SpringBoot 选项如图

    2、修改工程目录,添加源文件夹后目录如下:

     

    3、修改pom.xml文件如下:

    按 Ctrl+C 复制代码 按 Ctrl+C 复制代码

    4、编辑JAVA代码新建APP.class

    按 Ctrl+C 复制代码 按 Ctrl+C 复制代码

    运行此代码 服务端口默认8080  访问localhost:8080/h  展示Hello

     localhost:8080/w 展示World

    OK!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

    ---------------风格线---------------------

     新建RestController风格的Controller

    新建UserController

    按 Ctrl+C 复制代码 按 Ctrl+C 复制代码

    需修改App.java

    按 Ctrl+C 复制代码 按 Ctrl+C 复制代码

    运行App.java 访问 http://localhost:8080/user/12

     

    新建其他Controller

    按 Ctrl+C 复制代码 按 Ctrl+C 复制代码

    重启程序 访问http://localhost:8080/file/name

    ======================================================

        修改默认端口

        一、

    package com.lgp.SpringBoot; import org.springframework.boot.SpringApplication; import org.springframework.boot.autoconfigure.SpringBootApplication; import org.springframework.boot.context.embedded.ConfigurableEmbeddedServletContainer; import org.springframework.boot.context.embedded.EmbeddedServletContainerCustomizer; import org.springframework.web.bind.annotation.RequestMapping; import org.springframework.web.bind.annotation.RestController; @RestController @SpringBootApplication public class MainApplication implements EmbeddedServletContainerCustomizer{ @Override public void customize(ConfigurableEmbeddedServletContainer container) { container.setPort(8011); } public static void main(String[] args) { // SpringApplication.run(MainApplication.class, args); SpringApplication.run(FileController.class, args); } @RequestMapping("/main") public String testPort(){ return "Hello 端口8011......"; } }

       二、

    package com.lgp.SpringBoot; import java.util.concurrent.TimeUnit; import org.springframework.boot.SpringApplication; import org.springframework.boot.autoconfigure.EnableAutoConfiguration; import org.springframework.boot.context.embedded.EmbeddedServletContainerFactory; import org.springframework.boot.context.embedded.tomcat.TomcatEmbeddedServletContainerFactory; import org.springframework.context.annotation.Bean; import org.springframework.web.bind.annotation.RequestMapping; import org.springframework.web.bind.annotation.RestController; @RestController @EnableAutoConfiguration public class App { @RequestMapping("/h") public String home() { return "Hello"; } @RequestMapping("/w") public String word() { return "World"; } public static void main( String[] args ) { System.out.println( "Hello World ! App!" ); //SpringApplication.run(App.class, args); SpringApplication.run(UserController.class, args); } @Bean public EmbeddedServletContainerFactory servletFactory(){ TomcatEmbeddedServletContainerFactory tomcatFactory = new TomcatEmbeddedServletContainerFactory(); tomcatFactory.setPort(8011); tomcatFactory.setSessionTimeout(10,TimeUnit.SECONDS); return tomcatFactory; } }

    修改为8011

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