一、SpringCloud_eureka_server
1、导入依赖
<dependencies>
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>4.11</version>
<scope>test</scope>
</dependency>
<!--eureka依赖-->
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-starter-netflix-eureka-server</artifactId>
</dependency>
</dependencies>
<dependencyManagement>
<dependencies>
<!--springCloud依赖-->
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-dependencies</artifactId>
<version>Greenwich.RELEASE</version>
<type>pom</type>
<scope>import</scope>
</dependency>
</dependencies>
</dependencyManagement>
View Code
(注意!如果这里自动生成的不是这样的,改成以下这样就行了)
2、配置application.yml文件
##应用名称
spring:
application:
name: eureka-server
##声明当前eurekaserver的端口号
server:
port: 8888
##配置eureka
eureka:
client:
##代表是否将自己注册到注册中心去
register-with-eureka: false
##表明自己是注册中心
fetch-registry: false
##配置地址
service-url:
defaultZone: http://localhost:8888/eureka
3.启动类
4.效果图
二、生产者与消费者
1、SpringCloud_eureka_provider(生产者项目)
(1)导入依赖
<dependencies>
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>4.11</version>
<scope>test</scope>
</dependency>
<!--eureka依赖-->
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-starter-netflix-eureka-server</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-starter-feign</artifactId>
<version>1.3.5.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
</dependencies>
<dependencyManagement>
<dependencies>
<!--springCloud依赖-->
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-dependencies</artifactId>
<version>Greenwich.RELEASE</version>
<type>pom</type>
<scope>import</scope>
</dependency>
</dependencies>
</dependencyManagement>
View Code
(注意!如果这里自动生成的不是这样的,改成以下这样就行了)
(2)配置application.yml文件
(3)启动类
(4)创建Service层
(5)创建ServiceImpl层
2、SpringCloud_eureka_consumer(生产者项目)
(1)导入依赖
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>2.1.4.RELEASE</version>
</parent>
<modelVersion>4.0.0</modelVersion>
<artifactId>springcloud_eureka_consumer</artifactId>
<name>springcloud_eureka_consumer</name>
<!-- FIXME change it to the project's website -->
<url>http://www.example.com</url>
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<maven.compiler.source>1.7</maven.compiler.source>
<maven.compiler.target>1.7</maven.compiler.target>
</properties>
<dependencies>
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>4.11</version>
<scope>test</scope>
</dependency>
<!--eureka依赖-->
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-starter-netflix-eureka-server</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-starter-openfeign</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-starter-ribbon</artifactId>
</dependency>
</dependencies>
<dependencyManagement>
<dependencies>
<!--springCloud依赖-->
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-dependencies</artifactId>
<version>Greenwich.RELEASE</version>
<type>pom</type>
<scope>import</scope>
</dependency>
</dependencies>
</dependencyManagement>
View Code
(2)配置application.yml文件
(3)创建Controller层
(4)启动类
效果:
三、实现负载均衡
1、更改Controller层的访问地址
2.启动类
3、实现效果如下
勾选上此选项即可启动多个端口
生产者启动两个或两个以上端口访问
指定负载均衡策略
四、Feign负载均衡策略
1、导入依赖
<!--导入feign依赖-->
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-starter-openfeign</artifactId>
</dependency>
2、创建Service层(生产者接口名称不可有下划线)
3、Controller层
5、实现效果如下
同样至少启动两个访问端口
总共访问3此次,第一个端口走两次,第二个端口走一次(轮训机制)