程序员网站,大兴网站开发公司,网站建设 广,网络营销专业是做什么的目录 zuul系统架构和zuul的作用zuul网关实现配置映射路径过滤器 Config概述云端管理本地配置 zuul
zuul是分布式和集群后前端统一访问入口
系统架构和zuul的作用 zuul把自己注册进eureka#xff0c;然后可通过前端传来的服务名发现和访问对应的服务集群
为了预防zuul单点故… 目录 zuul系统架构和zuul的作用zuul网关实现配置映射路径过滤器 Config概述云端管理本地配置 zuul
zuul是分布式和集群后前端统一访问入口
系统架构和zuul的作用 zuul把自己注册进eureka然后可通过前端传来的服务名发现和访问对应的服务集群
为了预防zuul单点故障zuul也要做集群所以要在前面再加个nginx反向代理nginx本身也有负载均衡的作用
为了预防nginx单点故障由keepalived管理配置主备切换配置相同的虚拟ip给前端访问
正常开发只需要负责到zuul层keepalived和nginx由运维搭
zuul网关实现
创建新模块zuul-gateway-2010
导包 dependencygroupIdorg.springframework.boot/groupIdartifactIdspring-boot-starter-web/artifactId/dependencydependencygroupIdorg.springframework.boot/groupIdartifactIdspring-boot-starter-test/artifactId/dependencydependencygroupIdorg.springframework.cloud/groupIdartifactIdspring-cloud-starter-netflix-eureka-client/artifactId/dependencydependencygroupIdorg.springframework.cloud/groupIdartifactIdspring-cloud-starter-netflix-zuul/artifactId/dependencyapplication.yml
server:port: 2010
spring:application:name: zuul-gateway
eureka:client:service-url:defaultZone: http://eureka1:1010/eureka,http://eureka2:1020/eureka,http://eureka3:1030/eurekainstance:instance-id: zuul:2010prefer-ip-address: false启动类
SpringBootApplication
EnableEurekaClient
EnableZuulProxy //zuul网关的注解
public class ZuulApp {public static void main(String[] args) {SpringApplication.run(ZuulApp.class,args);}
}启动eureka集群生产者和网关浏览器访问测试http://localhost:2010/user-provider/user/provider/3
配置映射路径
可隐藏服务名加前缀 浏览器访问测试http://localhost:2010/services/myUser/user/provider/100
过滤器
核心方法执行流程和使用场景见文档3.4.13.4.23.4.3 代码实现
Component
public class LoginFilter extends ZuulFilter {//过滤器类型 pre 前置 routing 路由 post 后置 error 错误Overridepublic String filterType() {return pre;}//执行的顺序 数字越小 越先执行Overridepublic int filterOrder() {return 0;}//判断该过滤器是否需要执行Overridepublic boolean shouldFilter() {return true;}//业务逻辑 例如登录的token验证Overridepublic Object run() throws ZuulException {//获取当前请求上下文RequestContext context RequestContext.getCurrentContext();//从上下文里面获取请求对象HttpServletRequest request context.getRequest();String token request.getHeader(token);if (tokennull||.equals(token.trim())){//返回错误的结果context.setSendZuulResponse(false);//设置响应码context.setResponseStatusCode(HttpStatus.UNAUTHORIZED.value());}//不为空去redis里面查询return null;}
}浏览器不带token访问和postman带token访问测试http://localhost:2010/services/myUser/user/provider/101
zuul自带负载均衡和断路器配置即可 tips这里的负载均衡和断路器作用于前端通过zuul访问服务集群不同于之前的消费者访问生产者集群
zuul:retryable: true
ribbon:ConnectTimeout: 250 # 连接超时时间(ms)ReadTimeout: 2000 # 通信超时时间(ms)OkToRetryOnAllOperations: true # 是否对所有操作重试MaxAutoRetriesNextServer: 2 # 同一服务不同实例的重试次数MaxAutoRetries: 1 # 同一实例的重试次数
hystrix:command:default:execution:isolation:thread:timeoutInMillisecond: 3000 # 熔断超时时长3000msConfig
概述
见文档4.2.14.2.2
云端管理
1.Gitee创建仓库 添加文件application-zuul-test.yml复制配置文件内容到其中端口2010 添加文件application-zuul-dev.yml复制配置文件内容到其中可改动端口为2020做区分
2.新建项目config-server-3010 导包 dependencygroupIdorg.springframework.boot/groupIdartifactIdspring-boot-starter-web/artifactId/dependencydependencygroupIdorg.springframework.boot/groupIdartifactIdspring-boot-starter-test/artifactId/dependency!--配置中心支持--dependencygroupIdorg.springframework.cloud/groupIdartifactIdspring-cloud-config-server/artifactId/dependency配置
server:port: 3010
spring:application:name: config-servercloud:config:server:git:uri: https://gitee.com/ming-feng/config-center.gitusername: 513585429qq.compassword: ***********启动类
SpringBootApplication
EnableConfigServer //启用配置服务端
public class ConfigServerApp {public static void main(String[] args) {SpringApplication.run(ConfigServerApp.class);}
}启动项目浏览器访问测试http://localhost:3010/application-zuul-dev.yml或 http://localhost:3010/application-zuul/test
3.以zuul项目为例修改配置文件名让原来的配置文件失效 导包 !--configclient端--dependencygroupIdorg.springframework.cloud/groupIdartifactIdspring-cloud-starter-config/artifactId/dependency添加配置文件bootstrap.yml
spring:cloud:config:name: application-zuul #gitee上面名称profile: dev #环境label: master #分支uri: http://127.0.0.1:3010 #配置服务器启动项目浏览器可访问测试http://localhost:2020/services/myUser/user/provider/104
本地配置
克隆gitee项目到本地电脑 configserver项目添加本地文件路径配置
server:port: 3010
spring:application:name: config-server
# cloud:
# config:
# server:
# git:
# uri: https://gitee.com/ming-feng/config-center.git
# username: 513585429qq.com
# password: gt513585429cloud:config:server:native: #在本地目录搜索search-locations: file:D:\\code\\config-centerprofiles:active: native重启configserver 浏览器访问测试http://localhost:3010/application-zuul-dev.yml
