詳解spring-cloud與netflixEureka整合(註冊中心)

這篇文章主要介紹了詳解spring-cloud與netflixEureka整合(註冊中心),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着小編來一起學習學習吧

基礎依賴

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/ #註冊中心地址
  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現。在某些情況下,您不希望您的實例被發現而你想發現其他實例。默認爲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註冊表信息。默認爲true
server:
 port: 8761

啓動類添加 @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/ 

啓動類添加 @EnableDiscoveryClient (註冊中心通用客戶端註解)或 @EnableEurekaClient (只有eureka客戶端可用)

eureka(集羣)

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 文件裏事先寫好,

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

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

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 --參數名=參數值 參數將不起作用從而影響你無法選擇寫好的環境配置

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/

啓動類註解與單機版一樣

客戶端註冊一臺註冊中心,同時註冊到其他集羣中說明成功!

eureka添加 spring-security 權限認證

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,系統會自動生成並打印在控制檯日誌上
  
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

創建一個類並繼承 WebSecurityConfigurerAdapter 類,並在此類上添加 @EnableWebSecurity和@Configuration 註解,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(); // 關閉csrf
    http.authorizeRequests().anyRequest().authenticated().and().httpBasic(); // 開啓認證
  }
}

啓動類添加註解

@EnableEurekaServer
@EnableWebSecurity

下線服務

http://eureka地址:端口/eureka/apps/服務名/服務地址:服務端口號

實例如下:

erueka註冊中心ip: 10.100.1.100

端口: 12000

服務名: CPS-RISK-SERVER

實例id: 192.168.10.54:18883

則向下面的url通過http發送delete命令,可將指定的服務實例刪除:
http://10.100.1.100:12000/eureka/apps/CPS-RISK-SERVER/192.168.10.54:18883

變更服務狀態

http://eureka地址:端口/eureka/apps/服務名/服務地址/status?value=${value}

其中${value}的取值爲:OUT_OF_SERVICE , DOWN , UP

以上就是本文的全部內容,希望對大家的學習有所幫助,也希望大家多多支持神馬文庫。

發表評論
所有評論
還沒有人評論,想成為第一個評論的人麼? 請在上方評論欄輸入並且點擊發布.
相關文章