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Spring boot2X負(fù)載均衡和反向代理實(shí)現(xiàn)過程解析

更新時(shí)間：2019年12月02日 09:57:47 作者：慕塵

這篇文章主要介紹了Spring boot2X負(fù)載均衡和反向代理實(shí)現(xiàn)過程解析,文中通過示例代碼介紹的非常詳細(xì)，對(duì)大家的學(xué)習(xí)或者工作具有一定的參考學(xué)習(xí)價(jià)值,需要的朋友可以參考下

zuul 是netflix開源的一個(gè)API Gateway 服務(wù)器

所有從設(shè)備或網(wǎng)站來的請求都會(huì)經(jīng)過Zuul到達(dá)后端的Netflix應(yīng)用程序。

作為一個(gè)邊界性質(zhì)的應(yīng)用程序，Zuul提供了動(dòng)態(tài)路由、監(jiān)控、彈性負(fù)載和安全功能。

實(shí)現(xiàn)反向代理

1.服務(wù)注冊發(fā)現(xiàn)中心Consul

啟動(dòng)

consul agent -dev

2.服務(wù)端

provider和provider1

spring boot 版本 2.2.1.RELEASE

（1）添加依賴

<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）測試方法

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）啟動(dòng)類

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

測試方法

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.網(wǎng)關(guān)

zuul
Spring boot版本 2.1.8.RELEASE

上面用的Spring boot版本為 2.2.1.RELEASE

但是啟動(dòng)時(shí)遇到了報(bào)錯(cuò)，因此改成了這個(gè)版本

（1）添加依賴

<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）啟動(dòng)類

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);
  }
}

啟動(dòng)Consul

啟動(dòng)provider、provider1

啟動(dòng) zuul

訪問http://127.0.0.1:8090/api/hello

結(jié)果輸出：

　　hello,provider和hello,another provider

結(jié)果交替出現(xiàn)的，負(fù)載均衡器采用的是輪詢的方式

示例 https://gitee.com/babybeibeili/zuul_consul.git

以上就是本文的全部內(nèi)容，希望對(duì)大家的學(xué)習(xí)有所幫助，也希望大家多多支持腳本之家。

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