spring-cloud與netflixEureka整合（註冊中心）
摘要：
基礎依賴
compile('org.springframework.boot:spring-boot-starter-actuator')
compile('org.springframework.boot:spring-boot-starter-web')...
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 #表明該例項是否應該與尤里卡伺服器登記其資訊被別人發現。在某些情況下,您不希望您的例項被發現而你想發現其他例項。預設為true fetch-registry: false #表明這個客戶是否應該從尤里卡伺服器獲取尤里卡登錄檔資訊。預設為true server: port: 8761 View Code
啟動類新增 @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/ View Code
啟動類新增 @EnableDiscoveryClient （註冊中心通用客戶端註解）或 @EnableEurekaClient （只有eureka客戶端可用）
eureka（叢集）
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，預設true peer-node-read-timeout-ms: 5000 #節點讀取超時時間，預設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 View Code
eureka.client.service-url.defaultZone 與 eureka.instance.hostsname eureka1 、 eureka2 、 eureka3 都再本機的 hosts 檔案裡事先寫好,
例如 eureka1 伺服器上的hosts檔案
127.0.0.1localhost localhost.localdomain localhost4 localhost4.localdomain4 ::1localhost localhost.localdomain localhost6 localhost6.localdomain6 127.0.0.1eureka1 xxx.xxx.x.xx eureka2 xx.xxx.xxx.xx eureka3
啟動類同樣是新增 @EnableEurekaServer 注意：如果執行 jar 包時需要程式接收命令列引數，一定要再main方法的 SpringApplication.run() 方法 中傳入 args 引數
例如：
1 public static void main(String[] args) {
2SpringApplication.run(QnbbsConsumer.class,args);
3}
如果不傳入的話在命令列輸入 java -jar xxx.jar --引數名=引數值 引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/
啟動類註解與單機版一樣
客戶端註冊一臺註冊中心，同時註冊到其他叢集中說明成功！
eureka新增 spring-security 許可權認證
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
1 server:
2port: 8761
3 spring:
4application:
5name: eureka-server
6security:
7user:
8name: zyn
9password: zyn123...
10#使用者名稱與密碼若是不配置，系統會自動生成並列印在控制檯日誌上
11
12 eureka:
13client:
14register-with-eureka: false
15fetch-registry: false
16server:
17enable-self-preservation: false
18peer-node-read-timeout-ms: 5000
19
20 management:
21endpoints:
22web:
23base-path: /
24exposure:
25include: '*'
26endpoint:
27health:
28show-details: always
29restart:
30enabled: true
31server:
32port: 8761
33 ---
34 spring:
35profiles: eureka-jy
36 eureka:
37client:
38service-url:
39defaultZone: 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/
40instance:
41hostname: eureka-A
42 ---
43 spring:
44profiles: eureka-lhn
45 eureka:
46client:
47service-url:
48defaultZone: 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/
49instance:
50hostname: eureka-B
51 ---
52 spring:
53profiles: eureka-zsm
54 eureka:
55client:
56service-url:
57defaultZone: 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/
58instance:
59hostname: eureka-C
View Code
建立一個類並繼承 WebSecurityConfigurerAdapter 類，並在此類上新增 @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(); // 開啟認證
}
}
啟動類添加註解
@EnableEurekaServer @EnableWebSecurity
下線服務
http://eureka地址:埠/eureka/apps/服務名/服務地址:服務埠號
例項如下：
erueka註冊中心ip: 10.100.1.100
埠: 12000
服務名: CPS-RISK-SERVER
例項id: 192.168.10.54:18883
則向下面的url通過http傳送delete命令，可將指定的服務例項刪除：
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:埠/eureka/apps/服務名/服務地址/status?value=${value}
其中${value}的取值為： OUT_OF_SERVICE , DOWN , UP