<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.aaron</groupId>

  <artifactId>framework</artifactId>

  <packaging>war</packaging>

  <version>1.0.0</version>

  <name>framework Maven Webapp</name>

  <url>http://maven.apache.org</url>

      <parent>

        <groupId>org.springframework.boot</groupId>

        <artifactId>spring-boot-starter-parent</artifactId>

        <version>2.0.2.RELEASE</version>

        <relativePath />

    </parent>

    <properties>

        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>

        <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>

        <java.version>1.8</java.version>

    </properties>

    <dependencies>

        <dependency>

          <groupId>junit</groupId>

          <artifactId>junit</artifactId>

          <version>4.12</version>

          <scope>test</scope>

        </dependency>

        <dependency>

            <groupId>org.springframework.boot</groupId>

            <artifactId>spring-boot-starter-web</artifactId>

        </dependency>

        <!-- 单元测试 -->

        <dependency>

            <groupId>org.springframework.boot</groupId>

            <artifactId>spring-boot-starter-test</artifactId>

            <scope>test</scope>

        </dependency>

        <!-- 热部署 -->

        <dependency>

            <groupId>org.springframework.boot</groupId>

            <artifactId>spring-boot-devtools</artifactId>

            <optional>true</optional>

            <scope>true</scope>

        </dependency>

    </dependencies>

  <build>

    <finalName>framework</finalName>

    <plugins>

        <!-- Spring Boot包含一个Maven插件 ，可以将项目打包为可执行的jar。 -->

        <plugin>

            <groupId>org.springframework.boot</groupId>

            <artifactId>spring-boot-maven-plugin</artifactId>

            <configuration>

                <!-- 没有该配置，devtools 不生效 -->

                <fork>true</fork>

                <addResources>true</addResources>

            </configuration>

        </plugin>

    </plugins>

  </build>

</project>

package com.aaron.framework;

import org.springframework.boot.SpringApplication;

import org.springframework.boot.autoconfigure.SpringBootApplication;

import org.springframework.context.annotation.Bean;

@SpringBootApplication

public class Setup {

	public static void main(String[] args) {

        SpringApplication.run(Setup.class, args);

	}

}

package com.aaron.framework.controller;

import org.springframework.web.bind.annotation.RequestMapping;

import org.springframework.web.bind.annotation.RestController;

@RestController	//@RestController是返回json数据的controller，@Controller是返回页面的controller

@RequestMapping("/")

public class HelloWorldController {

	@RequestMapping("/")

	public String HelloWorld() {

		return "helloWorld";

	}

}