SpringCloud(Hoxton.SR3)基础篇：第三章Eureka集群高可用的认证服务实现与搭建

Posted 2021-02-28 圣痕道心

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一、Eureka Server高可用搭建（服务注册中心）

1.1MAVEN相关依赖

    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>2.2.6.RELEASE</version>
        <relativePath /> <!-- lookup parent from repository -->
    </parent>

    <properties>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
        <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
        <!-- jdk版本 -->
        <java.version>1.8</java.version>
        <!-- SpringCloud版本号，官方最新稳定版本 -->
        <spring-cloud.version>Hoxton.SR3</spring-cloud.version>
    </properties>

    <!--依赖管理，用于管理spring-cloud的依赖 -->
    <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>

    <dependencies>
        <!-- eureka服务端依赖jar包 -->
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-netflix-eureka-server</artifactId>
        </dependency>
        <!-- eureka安全组件jar包 -->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-security</artifactId>
        </dependency>
    </dependencies>

1.2 application.yml 相关配置

eureka服务一配置

server:
   port: 8761
#安全认证配置
spring:
   application:
      name: EUREKA-HA
   security:
      basic:
         enabled: true
      user:
         name: user
         password: password123
eureka:
   #Eureka实例名，集群中根据这里相互识别
   instance:
      hostname: peer1
   client:
      serviceUrl:
         #注册中心地址
         defaultZone: http://user:password123@peer2:8762/eureka/,http://user:password123@peer3:8763/eureka/

eureka服务二配置

server:
   port: 8762
#安全认证配置
spring:
   application:
      name: EUREKA-HA
   security:
      basic:
         enabled: true
      user:
         name: user
         password: password123
eureka:
   #Eureka实例名，集群中根据这里相互识别
   instance:
      hostname: peer2
   client:
      serviceUrl:
         defaultZone: http://user:password123@peer1:8761/eureka/,http://user:password123@peer3:8763/eureka/

eureka服务三配置

server:
   port: 8763
#安全认证配置
spring:
   application:
      name: EUREKA-HA
   security:
      basic:
         enabled: true
      user:
         name: user
         password: password123
eureka:
   #Eureka实例名，集群中根据这里相互识别
   instance:
      hostname: peer3
   client:
      serviceUrl:
         defaultZone: http://user:password123@peer1:8761/eureka/,http://user:password123@peer2:8762/eureka/

1.2.2 配置hosts文件，识别peer1,peer2,peer3地址

　　windows系统hosts文件路径：C:\\Windows\\System32\\drivers\\etc

　　修改步骤：以管理员的身份运行CMD,输入notepad打开记事本。用记事本往hosts文件内添加内容

　　hosts文件加入peer1,peer2,peer3内容

# localhost name resolution is handled within DNS itself.
#    127.0.0.1       localhost
#    ::1             localhost
127.0.0.1        peer1
127.0.0.1        peer2
127.0.0.1        peer3

1.3 启动类代码

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.cloud.netflix.eureka.server.EnableEurekaServer;

@SpringBootApplication
//该注解表明应用为eureka服务，有可以联合多个服务作为集群，对外提供服务注册以及发现功能
@EnableEurekaServer
public class EurekaHaApplication {
    public static void main(String[] args) {
        SpringApplication.run(EurekaHaApplication.class, args);
    }
}

1.4 解决页面中Instances currently registered with Eureka下面并没得注入的别的服务

禁用Spring Security的CSRF保护，添加一个配置类禁用csrf

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;

/**
 * eureka开启服务无法连接注册中心
 * spring Cloud 2.0 以上 security默认启用了csrf检验，要在eurekaServer端配置security的csrf检验为false
 * @author computer
 *
 */
@EnableWebSecurity
public class WebSecurityConfig extends WebSecurityConfigurerAdapter{

    @Override
    protected void configure(HttpSecurity http) throws Exception {
        http.csrf().disable();
        super.configure(http);
    }
    
}