springCloud+nacos微服务搭建_springcloud nacos搭建

springCloud+nacos微服务搭建

1、创建项目

用户服务：muu-admin
商品服务：muu-commodity
公共服务：muu-common
网关：muu-gateway

1、Spring Initializr

2、model模块右击（创建各模块）

muu-admin、muu-commodity 模块勾选Web-String Web、SpringCloudRouting-OpenFeign
muu-gateway 模块勾选Web-String Web、SpringCloudRouting-Gateway

目录结构

2、处理pom依赖

父pom别忘了加入pom，不然打包失败。

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>
    <packaging>pom</packaging>
    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>2.2.6.RELEASE</version>
        <relativePath/> <!-- lookup parent from repository -->
    </parent>
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1、修改parent

修改每个模块parent全部引用父模块

2、各模块全部交给父工程管理

3、提取公共版本

所有子pom里的dependencyManagement移动到父pom，交给父pom管理。

3、启动nacos

1、引入nacos依赖

<!--nacos注册服务-->
        <dependency>
            <groupId>com.alibaba.cloud</groupId>
            <artifactId>spring-cloud-starter-alibaba-nacos-discovery</artifactId>
            <version>${alibaba-nacos-discovery.version}</version>
        </dependency>
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公共服务引入，然后其他模块引入公共服务就可以了

2、启动类加上@EnableDiscoveryClient

需要注册nacos的启动类上加上@EnableDiscoveryClient注解

package com.mz.gateway;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.cloud.client.discovery.EnableDiscoveryClient;


@EnableDiscoveryClient
@SpringBootApplication
public class MuuGatewayApplication {

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

}
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3、配置yml文件

server:
  port: 8000

spring:
  cloud:
    nacos:
      discovery:
        server-addr: 10.2.26.52:8848
        group: mz
        namespace: mz-muu

  application:
    name: muu-admin
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4、起飞项目

nacos客户端下载地址https://github.com/alibaba/nacos/releases

5、geteway

server:
  port: 8002

spring:
  cloud:
    nacos:
      discovery:
        server-addr: 10.2.26.52:8848
        group: mz
        namespace: mz-muu
    # 添加网关  
    gateway:
      enabled: true
      routes:
        # id唯一表示 路由至admin服务
        - id: admin-route
          # lb://服务名称 (application.name)
          uri: lb://muu-admin
          # 访问地址
          predicates:
            - Path=/api/v1/admin/**
          filters:
            - StripPrefix=3




  application:
    name: muu-gateway
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6、openfeign远程调用

演示commodity模块调用admin模块

1、commodity启动类添加@EnableFeignClients

package com.mz.commodity;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.cloud.client.discovery.EnableDiscoveryClient;
import org.springframework.cloud.openfeign.EnableFeignClients;

@EnableDiscoveryClient
@SpringBootApplication
@EnableFeignClients
public class MuuCommodityApplication {

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

}
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2、admin模块添加获取时间接口

package com.mz.admin.controller;

import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

import java.util.Date;
@RestController
@RequestMapping("/user")
public class AdminController {

    /**
     * 获取当前时间
     */
    @GetMapping("/getDate")
    public Date getDate() {
        return new Date();
    }
}
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3、commodity模块编写client接口

package com.mz.commodity.client;

import com.mz.commodity.client.fallback.CommodityClientFallback;
import org.springframework.cloud.openfeign.FeignClient;
import org.springframework.web.bind.annotation.GetMapping;

import java.util.Date;

@FeignClient(value = "muu-admin",fallback = CommodityClientFallback.class)
public interface AdminClient {
    @GetMapping("/user/getDate")
    public Date getDate();
}
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调用结果