这篇文章主要介绍了Spring boot2X负载均衡和反向代理实现过程解析,文中通过示例代码介绍的非常详细，对大家的学习或者工作具有一定的参考学习价值,需要的朋友可以参考下
zuul 是netflix开源的一个API Gateway 服务器
所有从设备或网站来的请求都会经过Zuul到达后端的Netflix应用程序。
作为一个边界性质的应用程序，Zuul提供了动态路由、监控、弹性负载和安全功能。
实现反向代理
1.服务注册发现中心Consul
启动
consul agent -dev
2.服务端
provider和provider1
spring boot 版本 2.2.1.RELEASE
（1）添加依赖
<properties>
<java.version>1.8</java.version>
<spring-cloud.version>Greenwich.SR3</spring-cloud.version>
</properties>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-starter-consul-discovery</artifactId>
</dependency>
</dependencies>
<dependencyManagement>
<dependencies>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-dependencies</artifactId>
<version>${spring-cloud.version}</version>
<type>pom</type>
<scope>import</scope>
</dependency>
</dependencies>
</dependencyManagement>
（2）配置
server.port=8010
spring.application.name=service-provider
spring.cloud.consul.host=localhost
spring.cloud.consul.port=8500
spring.cloud.consul.discovery.health-check-path=/actuator/health
spring.cloud.consul.discovery.service-name=${spring.application.name}
spring.cloud.consul.discovery.heartbeat.enabled=true
management.endpoints.web.exposure.include=*
management.endpoint.health.show-details=always
（3）测试方法
package com.xyz.provider.controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
@RestController
public class demoController {
@RequestMapping("/hello")
public String Hello(){
return "hello,provider";
}
}
（4）启动类
package com.xyz.provider;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.cloud.client.discovery.EnableDiscoveryClient;
@EnableDiscoveryClient
@SpringBootApplication
public class ProviderApplication {
public static void main(String[] args) {
SpringApplication.run(ProviderApplication.class, args);
}
}
provide1的
server.port=8011
测试方法
package com.xyz.provider1.controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
@RestController
public class demoController {
@RequestMapping("/hello")
public String Hello(){
return "hello,another provider";
}
}
3.网关
上面用的Spring boot版本为 2.2.1.RELEASE
但是启动时遇到了报错，因此改成了这个版本
（1）添加依赖
<properties>
<java.version>1.8</java.version>
<spring-cloud.version>Greenwich.SR2</spring-cloud.version>
</properties>
<dependencies>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-starter-netflix-zuul</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-starter-consul-discovery</artifactId>
</dependency>
</dependencies>
<dependencyManagement>
<dependencies>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-dependencies</artifactId>
<version>${spring-cloud.version}</version>
<type>pom</type>
<scope>import</scope>
</dependency>
</dependencies>
</dependencyManagement>
（2）添加配置
server.port=8090
spring.application.name=service-zuul
spring.cloud.consul.host=localhost
spring.cloud.consul.port=8500
spring.cloud.consul.discovery.service-name=${spring.application.name}
spring.cloud.consul.discovery.instance-id=${spring.application.name}:${server.port}
management.endpoints.web.exposure.include=*
management.endpoint.health.show-details=always
zuul.routes.api.path=/api/**
zuul.routes.api.serviceId=service-provider
（3）启动类
package com.xyz.zuul;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.cloud.client.discovery.EnableDiscoveryClient;
import org.springframework.cloud.netflix.zuul.EnableZuulProxy;
@EnableZuulProxy
@SpringBootApplication
public class ZuulApplication {
public static void main(String[] args) {
SpringApplication.run(ZuulApplication.class, args);
}
}
启动Consul
启动provider、provider1
启动 zuul
访问http://127.0.0.1:8090/api/hello
结果输出：
hello,provider和hello,another provider
结果交替出现的，负载均衡器采用的是轮询的方式
示例 https://gitee.com/babybeibeili/zuul_consul.git
以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持脚本之家。
