詳解spring-cloud與netflixEureka整合（注冊中心）

更新時間：2019年02月14日 14:17:08 作者：金一濤

這篇文章主要介紹了詳解spring-cloud與netflixEureka整合（注冊中心），文中通過示例代碼介紹的非常詳細，對大家的學習或者工作具有一定的參考學習價值，需要的朋友們下面隨著小編來一起學習學習吧

基礎(chǔ)依賴

compile('org.springframework.boot:spring-boot-starter-actuator')
compile('org.springframework.boot:spring-boot-starter-web')
compile('org.springframework.cloud:spring-cloud-starter')

eureka（單機）

服務端：

依賴

compile('org.springframework.cloud:spring-cloud-starter-netflix-eureka-server')

application.yml 配置

spring:
 application:
  name: dev
eureka:
 client:
  service-url:
   defaultZone: http://本機ip地址:8761/eureka/ #注冊中心地址
  register-with-eureka: false #表明該實例是否應該與尤里卡服務器登記其信息被別人發(fā)現(xiàn)。在某些情況下,您不希望您的實例被發(fā)現(xiàn)而你想發(fā)現(xiàn)其他實例。默認為true
  fetch-registry: false #表明這個客戶是否應該從尤里卡服務器獲取尤里卡注冊表信息。默認為true
server:
 port: 8761

啟動類添加 @EnableEurekaServer

客戶端：

主要依賴

compile('org.springframework.cloud:spring-cloud-starter-netflix-eureka-client')

application.yml 配置

eureka:
 client:
  service-url:
   defaultZone: http://eureka服務地址:8761/eureka/

啟動類添加 @EnableDiscoveryClient （注冊中心通用客戶端注解）或 @EnableEurekaClient （只有eureka客戶端可用）

eureka（集群）

服務端

主要依賴

compile('org.springframework.cloud:spring-cloud-starter-netflix-eureka-server')
compile('org.springframework.cloud:spring-cloud-starter-netflix-eureka-client')

application.yml 配置

server:
 port: 8761
eureka:
 client:
  register-with-eureka: false
  fetch-registry: false
 server:
  enable-self-preservation: false #使用自我保護，默認true
  peer-node-read-timeout-ms: 5000 #節(jié)點讀取超時時間，默認200毫秒
---
spring:
 application:
  name: eureka1
 profiles: eureka1
eureka:
 client:
  service-url:
   defaultZone: http://eureka2:8761/eureka/,http://eureka3:8761/eureka/
 instance:
  hostname: eureka1
---
spring:
 application:
  name: eureka2
 profiles: eureka2
eureka:
 client:
  service-url:
   defaultZone: http://eureka1:8761/eureka/,http://eureka3:8761/eureka/
 instance:
  hostname: eureka2
---
spring:
 application:
  name: eureka3
 profiles: eureka3
eureka:
 client:
  service-url:
   defaultZone: http://eureka1:8761/eureka/,http://eureka2:8761/eureka/
 instance:
  hostname: eureka3

eureka.client.service-url.defaultZone 與 eureka.instance.hostsname eureka1、eureka2、eureka3 都再本機的 hosts 文件里事先寫好,

例如 eureka1 服務器上的hosts文件
127.0.0.1   localhost localhost.localdomain localhost4 localhost4.localdomain4
::1         localhost localhost.localdomain localhost6 localhost6.localdomain6
127.0.0.1   eureka1
xxx.xxx.x.xx eureka2
xx.xxx.xxx.xx eureka3

啟動類同樣是添加 @EnableEurekaServer 注意：如果運行 jar 包時需要程序接收命令行參數(shù)，一定要再main方法的 SpringApplication.run() 方法中傳入 args 參數(shù)

例如：

public static void main(String[] args) {
   SpringApplication.run(QnbbsConsumer.class,args);
}

如果不傳入的話在命令行輸入 java -jar xxx.jar --參數(shù)名=參數(shù)值參數(shù)將不起作用從而影響你無法選擇寫好的環(huán)境配置

客戶端：

依賴跟單機的一樣

application.yml 配置

eureka:
 instance:
  prefer-ip-address: true #是否顯示ip
  ip-address: 本機ip #填寫本機ip地址
 client:
  service-url:
   defaultZone: http://eureka1:8761/eureka/,http://eureka2:8761/eureka/，http://eureka3:8761/eureka/

啟動類注解與單機版一樣

客戶端注冊一臺注冊中心，同時注冊到其他集群中說明成功！

eureka添加 spring-security 權(quán)限認證

依賴

compile('org.springframework.cloud:spring-cloud-starter-netflix-eureka-client')
compile('org.springframework.boot:spring-boot-starter-security')
compile('org.springframework.cloud:spring-cloud-starter-netflix-eureka-server')

application.yml 配置

server:
 port: 8761
spring:
 application:
  name: eureka-server
 security:
  user:
   name: zyn
   password: zyn123... 
  #用戶名與密碼若是不配置，系統(tǒng)會自動生成并打印在控制臺日志上
  
eureka:
 client:
  register-with-eureka: false
  fetch-registry: false
 server:
  enable-self-preservation: false
  peer-node-read-timeout-ms: 5000
  
management:
 endpoints:
  web:
   base-path: /
   exposure:
    include: '*'
 endpoint:
  health:
   show-details: always
  restart:
   enabled: true
 server:
  port: 8761
---
spring:
 profiles: eureka-jy
eureka:
 client:
  service-url:
   defaultZone: http://${spring.security.user.name}:${spring.security.user.password}@eureka-B:8761/eureka/,http://${spring.security.user.name}:${spring.security.user.password}@eureka-C:8761/eureka/
 instance:
  hostname: eureka-A
---
spring:
 profiles: eureka-lhn
eureka:
 client:
  service-url:
   defaultZone: http://${spring.security.user.name}:${spring.security.user.password}@eureka-A:8761/eureka/,http://${spring.security.user.name}:${spring.security.user.password}@eureka-C:8761/eureka/ 
 instance:
  hostname: eureka-B
---
spring:
 profiles: eureka-zsm
eureka:
 client:
  service-url:
   defaultZone: http://${spring.security.user.name}:${spring.security.user.password}@eureka-A:8761/eureka/,http://${spring.security.user.name}:${spring.security.user.password}@eureka-B:8761/eureka/
 instance:
  hostname: eureka-C

創(chuàng)建一個類并繼承 WebSecurityConfigurerAdapter 類，并在此類上添加 @EnableWebSecurity和@Configuration 注解，重寫 configure 方法

package com.iteng.eureka.security;
import org.springframework.context.annotation.Configuration;
import org.springframework.security.config.annotation.web.builders.HttpSecurity;
import org.springframework.security.config.annotation.web.configuration.EnableWebSecurity;
import org.springframework.security.config.annotation.web.configuration.WebSecurityConfigurerAdapter;

@EnableWebSecurity
@Configuration
public class WebSecurityConfig extends WebSecurityConfigurerAdapter {

  @Override
  protected void configure(HttpSecurity http) throws Exception {
    http.csrf().disable(); // 關(guān)閉csrf
    http.authorizeRequests().anyRequest().authenticated().and().httpBasic(); // 開啟認證
  }
}

啟動類添加注解