一、介绍
(1)服务如果是集群式的话,Eureka会结合负载均衡策略根据服务名返回服务集群中的某一个实例地址及端口号给请求者,大致采用轮询机制。
二、服务集群搭建
(1)
(2)编写pom文件
<?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">
<parent>
<artifactId>demo20220821</artifactId>
<groupId>com.wsh.springcloud</groupId>
<version>1.0-SNAPSHOT</version>
</parent>
<modelVersion>4.0.0</modelVersion>
<artifactId>cloud-provider-payment8002</artifactId>
<dependencies>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-starter-netflix-eureka-client</artifactId>
</dependency>
<dependency>
<groupId>com.wsh.springcloud</groupId>
<artifactId>cloud-api-common</artifactId>
<version>1.0-SNAPSHOT</version>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-actuator</artifactId>
</dependency>
<dependency>
<groupId>org.mybatis.spring.boot</groupId>
<artifactId>mybatis-spring-boot-starter</artifactId>
</dependency>
<dependency>
<groupId>com.alibaba</groupId>
<artifactId>druid-spring-boot-starter</artifactId>
</dependency>
<dependency>
<groupId>MysqL</groupId>
<artifactId>mysql-connector-java</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-jdbc</artifactId>
</dependency>
<dependency>
<groupId>org.projectlombok</groupId>
<artifactId>lombok</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
</dependencies>
</project>
(3)编写yml
server:
port: 8002
spring:
application:
name: cloud-payment-service
datasource:
type: com.alibaba.druid.pool.DruidDataSource
driver-class-name: org.gjt.mm.MysqL.Driver
url: jdbc:MysqL://localhost:3306/springcloud?useUnicode=true&characterEncoding=utf-8&useSSL=false
username: root
password: wsh666
mybatis:
mapperLocations: classpath:mapper/*.xml
type-aliases-package: com.wsh.springcloud.entity
eureka:
client:
# 客户端设置为true
register-with-eureka: true
# 客户端设置为true
fetch-registry: true
service-url:
# defaultZone: http://localhost:7001/eureka
defaultZone: http://eureka1.com:7001/eureka, http://eureka2.com:7002/eureka
(4)编写启动类
@EnableEurekaClient
@SpringBootApplication
public class PaymentMain8002 {
public static void main(String[] args) {
SpringApplication.run(PaymentMain8002.class, args);
}
}
(5)将8001服务模块的controller、service、dao及mapper映射xml文件复制到该模块下
(6)分别访问http://eureka1.com:7001和http://eureka2.com:7002