本項目是搭建基于nacos注冊中心的springcloud，集成dubbo框架，使用zuul網關和gateway網關

一、框架搭建

（1）項目結構

micro-service??服務提供者
zuul-gateway??zuul網關
springcloud-gateway??gateway網關
class-provider? duboo提供者
user-provider??duboo提供者
duboo-consumer??duboo消費者
dubbo-interface??duboo接口api

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（2）環(huán)境

nacos 1.4.1

springboot 2.1.9

springcloud?Greenwich

dubbo??2.7.6

注：nacos搭建

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二、項目配置application.yaml

127.0.0.1為本地nacos地址

（1）micro-service

spring:application:name: micro-serviceprofiles:active: devjackson:time-zone: GMT+8date-format: yyyy-MM-dd HH:mm:ssdefault-property-inclusion: ALWAYScloud:nacos:discovery:server-addr: 127.0.0.1:8848server:port: 8081

（2）zuul-gateway

spring:application:name: zuul-gatewayprofiles:active: devjackson:time-zone: GMT+8date-format: yyyy-MM-dd HH:mm:ssdefault-property-inclusion: ALWAYScloud:nacos:discovery:server-addr: 127.0.0.1:8848server:port: 8082zuul:strip-prefix: true #轉發(fā)路徑截斷匹配前綴 # prefix: "/api"add-proxy-headers: falseset-content-length: truesemaphore:max-semaphores: 600hystrix:command:default:execution:isolation:thread:timeoutInMilliseconds: 120000 ribbon:ReadTimeout: 240000ConnectTimeout: 2000MaxAutoRetries: 0MaxAutoRetriesNextServer: 1eager-load:enabled: trueclients: micro-service

（3）?springcloud-gateway

spring:application:name: springcloud-gatewayprofiles:active: devjackson:time-zone: GMT+8date-format: yyyy-MM-dd HH:mm:ssdefault-property-inclusion: ALWAYScloud:nacos:discovery:server-addr: 127.0.0.1:8848gateway:discovery:locator:enabled: truelower-case-service-id: truehttpclient:connect-timeout: 60000response-timeout: 5sroutes:- id: micro-service1uri: lb://micro-servicepredicates:- Path=/micro-service1/**filters:- StripPrefix=1 server:port: 8083hystrix:command:default:execution:isolation:thread:timeoutInMilliseconds: 120000 ribbon:ReadTimeout: 240000ConnectTimeout: 2000MaxAutoRetries: 0MaxAutoRetriesNextServer: 1eager-load:enabled: trueclients: micro-service

（4）user-provider

dubbo:registry:address: spring-cloud://${spring.cloud.nacos.discovery.server-addr}protocol:name: dubboport: -1scan:base-packages: com.mk.springcloud.dubbocloud:subscribed-services: ''spring:application:name: user-providerprofiles:active: devjackson:time-zone: GMT+8date-format: yyyy-MM-dd HH:mm:ssdefault-property-inclusion: ALWAYSmain:allow-bean-definition-overriding: truecloud:nacos:discovery:server-addr: 172.0.0.1:8848server:port: 8084feign:hystrix:enabled: truelogBack:logPathDir: ${logPathDir:./log/${spring.application.name}}

（5）class-provider

dubbo:registry:address: spring-cloud://${spring.cloud.nacos.discovery.server-addr}protocol:name: dubboport: -1scan:base-packages: com.mk.springcloud.dubbocloud:subscribed-services: user-provider # consumer: # check: falsespring:application:name: class-providerprofiles:active: devjackson:time-zone: GMT+8date-format: yyyy-MM-dd HH:mm:ssdefault-property-inclusion: ALWAYSmain:allow-bean-definition-overriding: truecloud:nacos:discovery:server-addr: 172.0.0.1:8848server:port: 8085feign:hystrix:enabled: truelogBack:logPathDir: ${logPathDir:./log/${spring.application.name}}

（6）dubbo-consumer

dubbo:registry:address: spring-cloud://${spring.cloud.nacos.discovery.server-addr}protocol:name: dubboport: -1scan:base-packages: com.mk.springcloud.dubbocloud:subscribed-services: user-provider,class-provider # consumer: # check: falsespring:application:name: dubbo-consumerprofiles:active: devjackson:time-zone: GMT+8date-format: yyyy-MM-dd HH:mm:ssdefault-property-inclusion: ALWAYSmain:allow-bean-definition-overriding: truecloud:nacos:discovery:server-addr: 172.0.0.1:8848server:port: 8086logBack:logPathDir: ${logPathDir:./log/${spring.application.name}}

dubbo.register配置可以寫成其他方式，程序只取spring-cloud://這個協(xié)議頭，如：

dubbo:registry:address: spring-cloud://localhost

dubbo.scan.base-packages必須填寫，否則dubbo不會注冊dubbo接口服務

dubbo:scan:base-packages: com.mk.springcloud.dubbo

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三、dubbo存在的問題

consumer先啟動，provider后啟動無法發(fā)現(xiàn)問題在版本spring-cloud-starter-dubbo 2.2.4.RELEASE已經解決了。

provider重啟后，consumer無法自動發(fā)現(xiàn)provider，官方還沒有給出明確的解決時間。

所以每次重啟provider，都要把consumer重啟一遍才能訪問

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四、項目地址

https://github.com/90duc/springcloud-nacos-dubbo

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總結

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