springcloud(十五)：搭建Zuul微服务网关

springcloud(十四)：搭建Zuul微服务网关

 1.创建项目如下

 2.创建项目勾选web，zuul，eurekaclient

3.pom.xml文件内容许下

    <dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-netflix-eureka-client</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-netflix-zuul</artifactId>
        </dependency>

        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
        </dependency>
    </dependencies>

4.属性文件如下

#给该服务起名字
spring.application.name=eureka-zuul

#定义该服务的端口号
server.port=7600

#路由配置：配置访问映射路径
zuul.routes.client-school-provider=/pro/**
#zuul.routes.classes-client-consumer=/con/**

##zuul中默认就已经集成了Ribbon负载均衡和Hystix熔断机制。但是所有的超时策略
##都是走的默认值，比如熔断超时时间只有1s，很容易就触发了，因此建议我们手动配置如下：
##否则就会报出如下错误:
##There was an unexpected error (type=Gateway Timeout, status=504).
##com.netflix.zuul.exception.ZuulException: Hystrix Readed time out
##这个错误是因为拉取服务的默认时间太短，导致拉取服务失败了，最终导致访问失败
#是否开启重试功能
#zuul.retryable=true
##是否对所有操作重试
#ribbon.OkToRetryOnAllOperations=true
###对当前服务的重试次数
#ribbon.MaxAutoRetries=1

##同一实例的不同服务的重试次数
#ribbon.MaxAutoRetriesNextServer=2


#zuul.host.socket-timeout-millis= 60000
#zuul.host.connect-timeout-millis=60000

##链接超时时间
#ribbon.ConnectTimeout=60000
###通信超时时间
#ribbon.ReadTimeout=60000


##熔断器超时时长
#hystrix.command.default.execution.isolation.thread.timeoutInMilliseconds=60000


#注册中心配置
eureka.client.service-url.defaultZone=http://localhost:8761/eureka/

5.启动类如下

package cn.kgc;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.cloud.netflix.eureka.EnableEurekaClient;
import org.springframework.cloud.netflix.feign.EnableFeignClients;
import org.springframework.cloud.netflix.zuul.EnableZuulProxy;

@EnableEurekaClient
@EnableZuulProxy
@SpringBootApplication
public class EurekaZuulApplication {

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

}