IntelliJ IDEA 2017版 spring-boot-devtools实现热部署

1、配置pom.xml文档

 <?xml version="1.0" encoding="UTF-8"?>
 <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/xsd/maven-4.0.0.xsd">
     <modelVersion>4.0.0</modelVersion>

     <groupId>com.easytest</groupId>
     <artifactId>rebushu</artifactId>
     <version>0.0.1-SNAPSHOT</version>
     <packaging>jar</packaging>

     <name>rebushu</name>
     <url>http://maven.apache.org</url>
     <description>Demo project for Spring Boot</description>

     <parent>
         <groupId>org.springframework.boot</groupId>
         <artifactId>spring-boot-starter-parent</artifactId>
         <version>1.5.9.RELEASE</version>
         <relativePath/> <!-- lookup parent from repository -->
     </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>org.springframework.boot</groupId>
             <artifactId>spring-boot-starter-web</artifactId>
         </dependency>

         <dependency>
             <groupId>org.springframework.boot</groupId>
             <artifactId>spring-boot-starter-test</artifactId>
             <scope>test</scope>
         </dependency>
         <dependency>
             <groupId>com.alibaba</groupId>
             <artifactId>fastjson</artifactId>
             <version>1.2.15</version>
         </dependency>

         <!-- spring boot devtools 依赖包. -->
         <dependency>
             <groupId>org.springframework.boot</groupId>
             <artifactId>spring-boot-devtools</artifactId>
             <optional>true</optional>
             <scope>true</scope>
         </dependency>
     </dependencies>

     <!--构建节点-->
     <build>
         <plugins>
             <plugin>
                 <groupId>org.springframework.boot</groupId>
                 <artifactId>spring-boot-maven-plugin</artifactId>
                 <configuration>
                     <!--fork :  如果没有该项配置，肯呢个devtools不会起作用，即应用不会restart -->
                     <fork>true</fork>
                 </configuration>

             </plugin>

         </plugins>
     </build>

 </project>

2、书写测试代码pojo（实体类）

 package com.easytest;

 import com.alibaba.fastjson.annotation.JSONField;

 import java.util.Date;

 /**
  * Created by liuya on 2018-01-17.
  */
 public class UserPoJo
 {
     private int userId;
     private String userName;
     @JSONField(format="yyyy-MM-dd HH:mm:ss")
     private Date createTime;

     public Date getCreateTime() {
         return createTime;
     }

     public void setCreateTime(Date createTime) {
         this.createTime = createTime;
     }

     public int getUserId() {
         return userId;
     }

     public void setUserId(int userId) {
         this.userId = userId;
     }

     public String getUserName() {
         return userName;
     }

     public void setUserName(String userName) {
         this.userName = userName;
     }

     @Override
     public String toString() {
         return "UserPoJo{" +
                 "userId=" + userId +
                 ", userName='" + userName + '\'' +
                 ", createTime=" + createTime +
                 '}';
     }
 }

3、书写测试服务器

 package com.easytest;

 import com.alibaba.fastjson.serializer.SerializerFeature;
 import com.alibaba.fastjson.support.config.FastJsonConfig;
 import com.alibaba.fastjson.support.spring.FastJsonHttpMessageConverter;
 import org.springframework.boot.SpringApplication;
 import org.springframework.boot.autoconfigure.SpringBootApplication;
 import org.springframework.http.MediaType;
 import org.springframework.http.converter.HttpMessageConverter;
 import org.springframework.web.servlet.config.annotation.WebMvcConfigurerAdapter;

 import java.util.ArrayList;
 import java.util.List;

 @SpringBootApplication
 public class RebushuApplication extends WebMvcConfigurerAdapter {

     /**
      //     * 在这里我们使用 @Bean注入 fastJsonHttpMessageConvert
      //     * @return
      //     */
     @Override
     public void configureMessageConverters(List<HttpMessageConverter<?>> converters) {

         // 1、需要先定义一个 convert 转换消息的对象;
         FastJsonHttpMessageConverter fastConverter = new FastJsonHttpMessageConverter();

         //2、添加fastJson 的配置信息，比如：是否要格式化返回的json数据;
         FastJsonConfig fastJsonConfig = new FastJsonConfig();
         fastJsonConfig.setSerializerFeatures(SerializerFeature.PrettyFormat);

         //处理中文乱码
         List<MediaType> fastMediaTypes = new ArrayList<>();
         fastMediaTypes.add(MediaType.APPLICATION_JSON_UTF8);
         fastConverter.setSupportedMediaTypes(fastMediaTypes);

         //3、在convert中添加配置信息.
         fastConverter.setFastJsonConfig(fastJsonConfig);

         HttpMessageConverter<?> converter = fastConverter;
         converters.add(fastConverter);
     }

     public static void main(String[] args) {
         SpringApplication.run(RebushuApplication.class, args);
     }
 }

4、书写controller代码

 package com.easytest;

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

 import java.util.Date;

 /**
  * Created by liuya on 2018-01-16.
  *
  *  测试用的一个helloworld例子
  */

 @RestController
 public class ControllerJson {

     @RequestMapping("user2")
     public UserPoJo hello(){
         //实体类赋值
         UserPoJo userPoJo  = new UserPoJo();
         userPoJo.setUserId(111);
         userPoJo.setUserName("王小二");
         userPoJo.setCreateTime(new Date());
         //返回实体类
         return userPoJo;
     }
 }

5、编译器配置

（1）开启idea自动make功能

File--->setting--->如图:
           

(2)点击Compiler进入界面如图:(选择make project automatically)

(3)CTRL + SHIFT + A ----->查找Registry --->勾选compiler.automake.allow.when.app.running项目(详见:http://www.cnblogs.com/liuyangfirst/p/8317419.html)

6、maven启动,在编译器右侧栏点开右侧栏
      

7、访问网页测试一下是否联通

8、controller中加如下内容，然后F5刷新界面，如图就是成功实现热部署