SpringCloud微服务（2022）
微服务/分布式（轻量级/模块）
-
- 一、SpringCloud：服务全家桶/一站式
-
- （一） 组件
-
- 1、服务发现框架（注册中心）：~~Eureka~~ 、Zookeeper、Consul、nacos
- 2、负载均衡： Ribbon、Nignx、loadBalancer
- 3、服务调用映射：~~feign~~ 、Open Feign
- 4、熔断器（断路器）：Alibaba sentienl、Hystrix、resilience4j
- 5、网关路由：gateway、Zuul
- 6、统一配置中心：nacos、Config
- 7、消息总线：nacos、Bus
- （二）工程搭建
-
- 1、总父工程项目（Maven）
-
- 1. 创建：直接创建普通maven项目即可
- 2. 问题：
- 3.编码设置（idea）：
- 4.注解处理器激活（idea）：
- 5.JDK编译器版本（idea）：
- 6.过滤文件类型（idea）：
- 7.mvn命令：右边窗口Maven里面的命令
- 8.打包类型（idea）：
- 9.Maven总包依赖管理（idea）：
- 10.生命周期：闪电图标：禁止test：跳过单元测试
- 2、Maven子工程项目（Module）：模块
-
- 1.支付模块
-
- 1 POM.xml： cloud-provider-payment8001
- 2 application.yml：spring配置文件——properties可替代
- 5 主启动类：@SpringBootApplication
- 3 数据库SQL：建库、建表
- 4 实体类：:Lombok(简化代码)
- 5 服务业务
- 6 控制调度
- 7 数据映射
- 8 测试
- 2.消费者
-
- 1 POM.xml： cloud-provider-payment8001
- 2 application.yml：spring配置文件——properties可替代
- 5 主启动类：@SpringBootApplication
- 3 数据库SQL：建库、建表
- 4 实体类：:Lombok(简化代码)
- 5 服务业务
- 6 控制调度
- 7 数据映射
- 8 测试
- 二、软件使用
-
- （一）postma软件测试http协议
-
- 1、GET方法：浏览器支持良好
- 2、POST方法：浏览器支持不好
- （二）RUN运行方式：IDEA Run Dashboard面板
-
- 1、传统运行方式：Run
- 2、新方式：Run Dashboard
- （三）热部署：自动部署、生产环境关闭
- 三、SpringCloud Alibaba
- 技术：Java、maven、Git、github、Nginx、RabbitMQ、springboot
- 根据：约定＞约束＞配置
- 架构：前端——后台(C-S-D)——数据库
- 问题：文件名、路径、配置重复、版本号、依赖、地址、连接路径
- https://start.spring.io → 换地址 → https://start.aliyun.com
解决SocketTimeoutException: connect timed out问题
一、SpringCloud：服务全家桶/一站式
（一） 组件
1、服务发现框架（注册中心）：Eureka 、Zookeeper、Consul、nacos
2、负载均衡： Ribbon、Nignx、loadBalancer
负载均衡算法
进程内负载均衡器
3、服务调用映射：feign 、Open Feign
4、熔断器（断路器）：Alibaba sentienl、Hystrix、resilience4j
服务降级熔断器
5、网关路由：gateway、Zuul
6、统一配置中心：nacos、Config
7、消息总线：nacos、Bus
（二）工程搭建
1、总父工程项目（Maven）
1. 创建：直接创建普通maven项目即可
2. 问题：
- 标红：
maven-project-info-reports-plugin - 解决：
<dependency>
<groupId>org.apache.maven.pluginsgroupId>
<artifactId>maven-project-info-reports-pluginartifactId>
<version>3.0.0version>
<type>maven-plugintype>
dependency>
3.编码设置（idea）：
File | Settings | Editor | File Encodings | 全局编码（UTF-8）
File | Settings | Editor | File Encodings | 项目编码（UTF-8）
File | Settings | Editor | File Encodings | 项目文件路径项目（UTF-8）
File | Settings | Editor | File Encodings | 默认编码属性配置文件/打钩翻译本地编码转换（√）（UTF-8）
4.注解处理器激活（idea）：
File | Settings | Build, Execution, Deployment | Compiler | Annotation Processors | Enable annotation processing打钩√
5.JDK编译器版本（idea）：
- 项目构建：
Project Settings | Project
Project Settings | Modules(注意！！) - 设置：File | Settings | Build, Execution, Deployment | Compiler | Java Compiler
6.过滤文件类型（idea）：
File | Settings | Editor | File Types | Recognized File | AS ActionScript | Ignored Files and Folders
7.mvn命令：右边窗口Maven里面的命令
8.打包类型（idea）：
- pom
9.Maven总包依赖管理（idea）：
<properties>
<project.build.sourceEncoding>UTF-8project.build.sourceEncoding>
<maven.compiler.source>1.8maven.compiler.source>
<maven.compiler.target>1.8maven.compiler.target>
<junit.version>4.12junit.version>
<log4j.version>1.2.17log4j.version>
<lombok.version>1.18.0lombok.version>
<mysql.version>8.0.19mysql.version>
<druid.version>1.1.16druid.version>
<mybatis.spring.boot.version>1.3.2mybatis.spring.boot.version>
properties>
<dependencyManagement>
<dependencies>
<dependency>
<groupId>org.springframework.bootgroupId>
<artifactId>spring-boot-dependenciesartifactId>
<version>2.2.2.RELEASEversion>
<type>pomtype>
<scope>importscope>
dependency>
<dependency>
<groupId>org.springframework.cloudgroupId>
<artifactId>spring-cloud-dependenciesartifactId>
<version>Hoxton.SR1version>
<type>pomtype>
<scope>importscope>
dependency>
<dependency>
<groupId>com.alibaba.cloudgroupId>
<artifactId>spring-cloud-alibaba-dependenciesartifactId>
<version>2.1.0.RELEASEversion>
<type>pomtype>
<scope>importscope>
dependency>
<dependency>
<groupId>mysqlgroupId>
<artifactId>mysql-connector-javaartifactId>
<version>${mysql.version}version>
dependency>
<dependency>
<groupId>com.alibabagroupId>
<artifactId>druidartifactId>
<version>${druid.version}version>
dependency>
<dependency>
<groupId>org.mybatis.spring.bootgroupId>
<artifactId>mybatis-spring-boot-starterartifactId>
<version>${mybatis.spring.boot.version}version>
dependency>
<dependency>
<groupId>junitgroupId>
<artifactId>junitartifactId>
<version>${junit.version}version>
dependency>
<dependency>
<groupId>log4jgroupId>
<artifactId>log4jartifactId>
<version>${log4j.version}version>
dependency>
<dependency>
<groupId>org.projectlombokgroupId>
<artifactId>lombokartifactId>
<version>${lombok.version}version>
<optional>trueoptional>
dependency>
dependencies>
dependencyManagement>
<build>
<plugins>
<plugin>
<groupId>org.springframework.bootgroupId>
<artifactId>spring-boot-maven-pluginartifactId>
<version>2.2.6.RELEASEversion>
<configuration>
<fork>truefork>
<addResources>trueaddResources>
configuration>
plugin>
plugins>
build>
10.生命周期：闪电图标：禁止test：跳过单元测试
2、Maven子工程项目（Module）：模块
- 方式：鼠标右击项目
- 路径：New | Module | Maven
- 模块套路：
建Module
改POM
写YML
主启动
业务类
1.支付模块
1 POM.xml： cloud-provider-payment8001
<parent>
<artifactId>CloudartifactId>
<groupId>com.remligroupId>
<version>1.0-SNAPSHOTversion>
parent>
<modelVersion>4.0.0modelVersion>
<artifactId>cloud-provider-payment8001artifactId>
<properties>
<maven.compiler.source>8maven.compiler.source>
<maven.compiler.target>8maven.compiler.target>
properties>
<dependencies>
<dependency>
<groupId>org.springframework.cloudgroupId>
<artifactId>spring-cloud-starter-zipkinartifactId>
dependency>
<dependency>
<groupId>org.springframework.cloudgroupId>
<artifactId>spring-cloud-starter-netflix-eureka-clientartifactId>
dependency>
<dependency>
<groupId>org.springframework.bootgroupId>
<artifactId>spring-boot-starter-webartifactId>
dependency>
<dependency>
<groupId>org.springframework.bootgroupId>
<artifactId>spring-boot-starter-actuatorartifactId>
dependency>
<dependency>
<groupId>org.mybatis.spring.bootgroupId>
<artifactId>mybatis-spring-boot-starterartifactId>
dependency>
<dependency>
<groupId>com.alibabagroupId>
<artifactId>druid-spring-boot-starterartifactId>
<version>1.1.10version>
dependency>
<dependency>
<groupId>mysqlgroupId>
<artifactId>mysql-connector-javaartifactId>
dependency>
<dependency>
<groupId>org.springframework.bootgroupId>
<artifactId>spring-boot-starter-jdbcartifactId>
dependency>
<dependency>
<groupId>org.springframework.bootgroupId>
<artifactId>spring-boot-devtoolsartifactId>
<scope>runtimescope>
<optional>trueoptional>
dependency>
<dependency>
<groupId>org.projectlombokgroupId>
<artifactId>lombokartifactId>
<optional>trueoptional>
dependency>
<dependency>
<groupId>org.springframework.bootgroupId>
<artifactId>spring-boot-starter-testartifactId>
<scope>testscope>
dependency>
dependencies>
project>
2 application.yml：spring配置文件——properties可替代
server:
port: 8001
spring:
application:
name: cloud-payment-service
datasource:
type: com.alibaba.druid.pool.DruidDataSource # 当前数据源操作类型
driver-class-name: com.mysql.cj.jdbc.Driver # mysql驱动包
url: jdbc:mysql://localhost:3306/db2022?useUnicode=true&characterEncoding=utf-8&useSSL=false
username: root
password: 12345678
zipkin:
base-url: http://localhost:9411
sleuth:
sampler:
#采样率值介于0到1之间，1则表示全部采集
probability: 1
mybatis:
mapper-locations: classpath:mapper/*.xml
type-aliases-package: com.atguigu.springcloud.entities
eureka:
client:
service-url:
defaultZone: http://www.eureka7001.com:7001/eureka/,http://www.eureka7002.com:7002/eureka/
# defaultZone: http://eureka7001.com:7001/eureka/
instance:
ip-address: 127.0.0.1
instance-id: payment8001
prefer-ip-address: true
lease-renewal-interval-in-seconds: 1
lease-expiration-duration-in-seconds: 2
5 主启动类：@SpringBootApplication
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
@SpringBootApplication
public class PaymentMain001 {
public static void main(String[] args) {
SpringApplication.run(PaymentMain001.class, args);
}
}
3 数据库SQL：建库、建表
SET NAMES utf8mb4;
SET FOREIGN_KEY_CHECKS = 0;
CREATE database db2019;
USE db2022;
DROP TABLE IF EXISTS `payment`;
CREATE TABLE `payment` (
`id` bigint(20) NOT NULL AUTO_INCREMENT COMMENT '主键',
`serial` varchar(200) CHARACTER SET utf8 COLLATE utf8_general_ci DEFAULT NULL COMMENT '支付流水号',
PRIMARY KEY (`id`) USING BTREE
) ENGINE = InnoDB CHARACTER SET = utf8 COLLATE = utf8_general_ci COMMENT = '支付表' ROW_FORMAT = Dynamic;
4 实体类：:Lombok(简化代码)
- Payment.java：
import lombok.AllArgsConstructor;
import lombok.Data;
import lombok.NoArgsConstructor;
import java.io.Serializable;
@Data
@AllArgsConstructor
@NoArgsConstructor
public class Payment implements Serializable {
private Long id;
private String serial;
}
- CommonResult.java：JSON封装体
import lombok.AllArgsConstructor;
import lombok.Data;
import lombok.NoArgsConstructor;
@Data
@AllArgsConstructor
@NoArgsConstructor
public class CommonResult<T>{
private Integer code;
private String message;
private T data;
public CommonResult(Integer code, String message){
this(code, message, null);
}
}
5 服务业务
- PaymentService.java：服务接口
import com.lun.springcloud.entities.Payment;
import org.apache.ibatis.annotations.Param;
public interface PaymentService
{
public int create(Payment payment);
public Payment getPaymentById(@Param("id") Long id);
}
- PaymentServiceImpl.java：服务实现
import com.lun.springcloud.dao.PaymentDao;
import com.lun.springcloud.entities.Payment;
import com.lun.springcloud.service.PaymentService;
import org.apache.ibatis.annotations.Param;
import org.springframework.stereotype.Service;
import javax.annotation.Resource;
@Service
public class PaymentServiceImpl implements PaymentService
{
@Resource
private PaymentDao paymentDao;
public int create(Payment payment)
{
return paymentDao.create(payment);
}
public Payment getPaymentById(Long id)
{
return paymentDao.getPaymentById(id);
}
}
6 控制调度
import com.lun.springcloud.entities.CommonResult;
import com.lun.springcloud.entities.Payment;
import com.lun.springcloud.service.PaymentService;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.cloud.client.ServiceInstance;
import org.springframework.web.bind.annotation.*;
import org.springframework.cloud.client.discovery.DiscoveryClient;
import javax.annotation.Resource;
import java.util.List;
import java.util.concurrent.TimeUnit;
/**
*/
@RestController
@Slf4j
public class PaymentController{
@Resource
private PaymentService paymentService;
@PostMapping(value = "/payment/create")
public CommonResult create(Payment payment)
{
int result = paymentService.create(payment);
log.info("*****插入结果："+result);
if(result > 0)
{
return new CommonResult(200,"插入数据库成功,serverPort: "+serverPort,result);
}else{
return new CommonResult(444,"插入数据库失败",null);
}
}
@GetMapping(value = "/payment/get/{id}")
public CommonResult<Payment> getPaymentById(@PathVariable("id") Long id)
{
Payment payment = paymentService.getPaymentById(id);
if(payment != null)
{
return new CommonResult(200,"查询成功,serverPort: "+serverPort,payment);
}else{
return new CommonResult(444,"没有对应记录,查询ID: "+id,null);
}
}
}
7 数据映射
- PaymentDao.java：接口
import com.atguigu.springcloud.entities.Payment;
import org.apache.ibatis.annotations.Mapper;
import org.apache.ibatis.annotations.Param;
@Mapper
//@Repository不用Spring的
public interface PaymentDao
{
public int create(Payment payment);
public Payment getPaymentById(@Param("id") Long id);
}
- PaymentMapper.xml：MyBatis映射文件
DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN" "http://mybatis.org/dtd/mybatis-3-mapper.dtd" >
<mapper namespace="com.lun.springcloud.dao.PaymentDao">
<insert id="create" parameterType="Payment" useGeneratedKeys="true" keyProperty="id">
insert into payment(serial) values(#{serial});
insert>
<resultMap id="BaseResultMap" type="com.lun.springcloud.entities.Payment">
<id column="id" property="id" jdbcType="BIGINT"/>
<id column="serial" property="serial" jdbcType="VARCHAR"/>
resultMap>
<select id="getPaymentById" parameterType="Long" resultMap="BaseResultMap">
select * from payment where id=#{id};
select>
mapper>
8 测试
- GET查询：http://localhost:8001/payment/get/1
格式：http://localhost:端口号/payment/get/表id
端口号＝server-port
数据库id＝表中id号
直接查询 - 提交Postman：http://localhost:8001/payment/create?serial=lun2
2.消费者
1 POM.xml： cloud-provider-payment8001
<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>4.0.0modelVersion>
<groupId>com.remligroupId>
<artifactId>cloud-consumer-order80artifactId>
<version>1.0-SNAPSHOTversion>
<dependencies>
<dependency>
<groupId>org.apache.httpcomponentsgroupId>
<artifactId>httpclientartifactId>
<scope>testscope>
dependency>
<dependency>
<groupId>org.springframework.cloudgroupId>
<artifactId>spring-cloud-starter-netflix-eureka-clientartifactId>
dependency>
<dependency>
<groupId>org.springframework.bootgroupId>
<artifactId>spring-boot-starter-webartifactId>
dependency>
<dependency>
<groupId>org.springframework.bootgroupId>
<artifactId>spring-boot-starter-actuatorartifactId>
dependency>
<dependency>
<groupId>org.mybatis.spring.bootgroupId>
<artifactId>mybatis-spring-boot-starterartifactId>
dependency>
<dependency>
<groupId>com.alibabagroupId>
<artifactId>druid-spring-boot-starterartifactId>
dependency>
<dependency>
<groupId>mysqlgroupId>
<artifactId>mysql-connector-javaartifactId>
dependency>
<dependency>
<groupId>org.springframework.bootgroupId>
<artifactId>spring-boot-starter-jdbcartifactId>
dependency>
<dependency>
<groupId>org.projectlombokgroupId>
<artifactId>lombokartifactId>
<optional>trueoptional>
dependency>
<dependency>
<groupId>org.springframework.bootgroupId>
<artifactId>spring-boot-starter-testartifactId>
<scope>testscope>
dependency>
<dependency>
<groupId>org.springframework.bootgroupId>
<artifactId>spring-boot-devtoolsartifactId>
<scope>runtimescope>
<optional>trueoptional>
dependency>
dependencies>
project>
2 application.yml：spring配置文件——properties可替代
server:
port: 8001
spring:
application:
name: cloud-payment-service
datasource:
type: com.alibaba.druid.pool.DruidDataSource # 当前数据源操作类型
driver-class-name: com.mysql.cj.jdbc.Driver # mysql驱动包
url: jdbc:mysql://localhost:3306/db2022?useUnicode=true&characterEncoding=utf-8&useSSL=false
username: root
password: 12345678
zipkin:
base-url: http://localhost:9411
sleuth:
sampler:
#采样率值介于0到1之间，1则表示全部采集
probability: 1
mybatis:
mapper-locations: classpath:mapper/*.xml
type-aliases-package: com.atguigu.springcloud.entities
eureka:
client:
service-url:
defaultZone: http://www.eureka7001.com:7001/eureka/,http://www.eureka7002.com:7002/eureka/
# defaultZone: http://eureka7001.com:7001/eureka/
instance:
ip-address: 127.0.0.1
instance-id: payment8001
prefer-ip-address: true
lease-renewal-interval-in-seconds: 1
lease-expiration-duration-in-seconds: 2
5 主启动类：@SpringBootApplication
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
@SpringBootApplication
public class PaymentMain001 {
public static void main(String[] args) {
SpringApplication.run(PaymentMain001.class, args);
}
}
3 数据库SQL：建库、建表
SET NAMES utf8mb4;
SET FOREIGN_KEY_CHECKS = 0;
CREATE database db2019;
USE db2022;
DROP TABLE IF EXISTS `payment`;
CREATE TABLE `payment` (
`id` bigint(20) NOT NULL AUTO_INCREMENT COMMENT '主键',
`serial` varchar(200) CHARACTER SET utf8 COLLATE utf8_general_ci DEFAULT NULL COMMENT '支付流水号',
PRIMARY KEY (`id`) USING BTREE
) ENGINE = InnoDB CHARACTER SET = utf8 COLLATE = utf8_general_ci COMMENT = '支付表' ROW_FORMAT = Dynamic;
4 实体类：:Lombok(简化代码)
- Payment.java：
import lombok.AllArgsConstructor;
import lombok.Data;
import lombok.NoArgsConstructor;
import java.io.Serializable;
@Data
@AllArgsConstructor
@NoArgsConstructor
public class Payment implements Serializable {
private Long id;
private String serial;
}
- CommonResult.java：JSON封装体
import lombok.AllArgsConstructor;
import lombok.Data;
import lombok.NoArgsConstructor;
@Data
@AllArgsConstructor
@NoArgsConstructor
public class CommonResult<T>{
private Integer code;
private String message;
private T data;
public CommonResult(Integer code, String message){
this(code, message, null);
}
}
5 服务业务
- PaymentService.java：服务接口
import com.lun.springcloud.entities.Payment;
import org.apache.ibatis.annotations.Param;
public interface PaymentService
{
public int create(Payment payment);
public Payment getPaymentById(@Param("id") Long id);
}
- PaymentServiceImpl.java：服务实现
import com.lun.springcloud.dao.PaymentDao;
import com.lun.springcloud.entities.Payment;
import com.lun.springcloud.service.PaymentService;
import org.apache.ibatis.annotations.Param;
import org.springframework.stereotype.Service;
import javax.annotation.Resource;
@Service
public class PaymentServiceImpl implements PaymentService
{
@Resource
private PaymentDao paymentDao;
public int create(Payment payment)
{
return paymentDao.create(payment);
}
public Payment getPaymentById(Long id)
{
return paymentDao.getPaymentById(id);
}
}
6 控制调度
import com.lun.springcloud.entities.CommonResult;
import com.lun.springcloud.entities.Payment;
import com.lun.springcloud.service.PaymentService;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.cloud.client.ServiceInstance;
import org.springframework.web.bind.annotation.*;
import org.springframework.cloud.client.discovery.DiscoveryClient;
import javax.annotation.Resource;
import java.util.List;
import java.util.concurrent.TimeUnit;
/**
*/
@RestController
@Slf4j
public class PaymentController{
@Resource
private PaymentService paymentService;
@PostMapping(value = "/payment/create")
public CommonResult create(Payment payment)
{
int result = paymentService.create(payment);
log.info("*****插入结果："+result);
if(result > 0)
{
return new CommonResult(200,"插入数据库成功,serverPort: "+serverPort,result);
}else{
return new CommonResult(444,"插入数据库失败",null);
}
}
@GetMapping(value = "/payment/get/{id}")
public CommonResult<Payment> getPaymentById(@PathVariable("id") Long id)
{
Payment payment = paymentService.getPaymentById(id);
if(payment != null)
{
return new CommonResult(200,"查询成功,serverPort: "+serverPort,payment);
}else{
return new CommonResult(444,"没有对应记录,查询ID: "+id,null);
}
}
}
7 数据映射
- PaymentDao.java：接口
import com.atguigu.springcloud.entities.Payment;
import org.apache.ibatis.annotations.Mapper;
import org.apache.ibatis.annotations.Param;
@Mapper
//@Repository不用Spring的
public interface PaymentDao
{
public int create(Payment payment);
public Payment getPaymentById(@Param("id") Long id);
}
- PaymentMapper.xml：MyBatis映射文件
DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN" "http://mybatis.org/dtd/mybatis-3-mapper.dtd" >
<mapper namespace="com.lun.springcloud.dao.PaymentDao">
<insert id="create" parameterType="Payment" useGeneratedKeys="true" keyProperty="id">
insert into payment(serial) values(#{serial});
insert>
<resultMap id="BaseResultMap" type="com.lun.springcloud.entities.Payment">
<id column="id" property="id" jdbcType="BIGINT"/>
<id column="serial" property="serial" jdbcType="VARCHAR"/>
resultMap>
<select id="getPaymentById" parameterType="Long" resultMap="BaseResultMap">
select * from payment where id=#{id};
select>
mapper>
8 测试
- GET查询：http://localhost:8001/payment/get/1
格式：http://localhost:端口号/payment/get/表id
端口号＝server-port
数据库id＝表中id号
直接查询 - 提交Postman：http://localhost:8001/payment/create?serial=lun2
二、软件使用
（一）postma软件测试http协议
1、GET方法：浏览器支持良好
2、POST方法：浏览器支持不好
（二）RUN运行方式：IDEA Run Dashboard面板
1、传统运行方式：Run
2、新方式：Run Dashboard
- IDEA设置：
View →Tool Windows → Services - 文件配置：.idea / workspace.xml
<component name="RunDashboard">
<option name="configurationTypes">
<set>
<option value="SpringBootApplicationConfigurationType" />
set>
option>
component>
3.作用：
看到启动项目、显示相应端口、启动多模块、微服务启动
（三）热部署：自动部署、生产环境关闭
开发时使用、生产环境关闭
- 支付子模块pom.xml：Adding devtools to your project
<dependency>
<groupId>org.springframework.bootgroupId>
<artifactId>spring-boot-devtoolsartifactId>
<scope>runtimescope>
<optional>trueoptional>
dependency>
- 聚合父类总工程pom.xml：Adding plugin to your pom.xml
<build>
<plugins>
<plugin>
<groupId>org.springframework.bootgroupId>
<artifactId>spring-boot-maven-pluginartifactId>
<version>2.2.6.RELEASEversion>
<configuration>
<fork>truefork>
<addResources>trueaddResources>
configuration>
plugin>
plugins>
build>
-
IDEA设置：Enabling automatic build
路径：File → Settings → Build/Execution/Deployment → Complier
打钩：√
√ Automatically show first error in editor
√ Display notification on build completion
√ Build project automatically
√ Compile independent modules in parallel -
2021版本IDEA：Update the value of
老版本：键入Ctrl + Shift + Alt + / ，打开Registry，
勾选：compiler.automake.allow.when.app.running
勾选：actionSystem.assertFocusAccessFromEdt2021版本路径：File → Settings → Advanced Settings
√ Allow auto-make to start even if developed application is currently running快捷键：键入Ctrl + Shift + Alt + / ，打开Registry
√ actionSystem.assertFocusAccessFromEdt -
重启IDEA