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<properties>
    <spring.cloud.version>Hoxton.SR12</spring.cloud.version>
    <spring.cloud.alibaba.version>2.2.7-SNAPSHOT</spring.cloud.alibaba.version>
    <mybatis.plus.starter.version>3.4.0</mybatis.plus.starter.version>
    <durid.starter.version>1.1.10</durid.starter.version>
    <swagger.version>2.7.0</swagger.version>
    <jwt.jjwt.version>0.9.0</jwt.jjwt.version>
    <jwt.joda.version>2.9.7</jwt.joda.version>
</properties>


<dependencyManagement>
    <dependencies>
        <!-- Spring Dependencies -->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-dependencies</artifactId>
            <version>${spring-boot.version}</version>
            <type>pom</type>
            <scope>import</scope>
        </dependency>

        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-dependencies</artifactId>
            <version>${spring.cloud.version}</version>
            <type>pom</type>
            <scope>import</scope>
        </dependency>

        <dependency>
            <groupId>com.alibaba.cloud</groupId>
            <artifactId>spring-cloud-alibaba-dependencies</artifactId>
            <version>2.2.7.RELEASE</version>
            <type>pom</type>
            <scope>import</scope>
        </dependency>

        <!-- mybatis-plus -->
        <dependency>
            <groupId>com.baomidou</groupId>
            <artifactId>mybatis-plus-boot-starter</artifactId>
            <version>${mybatis.plus.starter.version}</version>
        </dependency>

        <!-- Druid连接池 -->
        <dependency>
            <groupId>com.alibaba</groupId>
            <artifactId>druid-spring-boot-starter</artifactId>
            <version>${durid.starter.version}</version>
        </dependency>

        <!--swagger2-->
        <dependency>
            <groupId>io.springfox</groupId>
            <artifactId>springfox-swagger2</artifactId>
            <version>${swagger.version}</version>
        </dependency>
        <dependency>
            <groupId>io.springfox</groupId>
            <artifactId>springfox-swagger-ui</artifactId>
            <version>${swagger.version}</version>
        </dependency>
    </dependencies>
</dependencyManagement>

<build>
    <plugins>
        <plugin>
            <groupId>org.apache.maven.plugins</groupId>
            <artifactId>maven-javadoc-plugin</artifactId>
            <configuration>
                <skip>true</skip>
            </configuration>
        </plugin>
    </plugins>
</build>

服务提供者Provider

搭建服务

创建项目：nacos-provider-2.1

添加依赖：

org.springframework.boot spring-boot-starter-web

    <!-- nacos 服务发现 -->
    <dependency>
        <groupId>com.alibaba.cloud</groupId>
        <artifactId>spring-cloud-starter-alibaba-nacos-discovery</artifactId>
    </dependency>
</dependencies>

创建yml文件
#server.port=8070
#spring.application.name=service-provider
#spring.cloud.nacos.discovery.server-addr=127.0.0.1:8848
#端口号
server:
port: 8070
spring:
application:
name: service-provider #服务名
cloud:
nacos:
discovery:
server-addr: 127.0.0.1:8848 #nacos服务地址

创建服务

启动类

package com.czxy.nacos;

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


@SpringBootApplication
@EnableDiscoveryClient      //服务发现
public class TestNacosProviderApplication {
    public static void main(String[] args) {
        SpringApplication.run(TestNacosProviderApplication.class, args );
    }
}

处理类controller

package com.czxy.controller;

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

import javax.annotation.Resource;
import javax.servlet.http.HttpServletRequest;


@RestController
public class EchoController {

    @Resource
    private HttpServletRequest request;

    @GetMapping("/echo/{string}")
    public String echo(@PathVariable String string) {
        int serverPort = request.getServerPort();
        return "Hello Nacos Discovery " + string + ":" + serverPort;
    }
}

查看服务

通过浏览器访问

http://localhost:8070/echo/abc

通过Nacos控制台查看

注册异常

服务消费者Consumer

搭建服务

项目名：nacos-consumer-2.1

添加依赖

org.springframework.boot spring-boot-starter-web

    <!-- nacos 服务发现 -->
    <dependency>
        <groupId>com.alibaba.cloud</groupId>
        <artifactId>spring-cloud-starter-alibaba-nacos-discovery</artifactId>
    </dependency>

    <!-- openfeign 远程调用 -->
    <dependency>
        <groupId>org.springframework.cloud</groupId>
        <artifactId>spring-cloud-starter-openfeign</artifactId>
    </dependency>

</dependencies>

创建配置文件

#server.port=8071
#spring.application.name=service-consumer
#spring.cloud.nacos.discovery.server-addr=127.0.0.1:8848
#端口号
server:
  port: 8071

spring:
  application:
    name: service-consumer          #服务名
  cloud:
    nacos:
      discovery:
        server-addr: 127.0.0.1:8848   #nacos服务地址

创建服务

创建启动类

package com.czxy;

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


@SpringBootApplication
@EnableDiscoveryClient  //服务发现
public class TestNacosConsumerApplication {
    public static void main(String[] args) {
        SpringApplication.run(TestNacosConsumerApplication.class, args );
    }
}

远程调用配置类

package com.czxy.config;

import org.springframework.cloud.client.loadbalancer.LoadBalanced;
import org.springframework.context.annotation.Bean;
import org.springframework.stereotype.Component;
import org.springframework.web.client.RestTemplate;


@Component
public class RestTemplateConfig {
    @LoadBalanced   //负载均衡
    @Bean
    public RestTemplate restTemplate() {
        return new RestTemplate();
    }
}

处理类
package com.czxy.nacos.controller;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.RestController;
import org.springframework.web.client.RestTemplate;
import javax.annotation.Resource;
@RestController
public class TestRestController {
@Resource
private RestTemplate restTemplate;
```
@RequestMapping(value = "/echo/{str}", method = RequestMethod.GET)
public String echo(@PathVariable String str) {
    return restTemplate.getForObject("http://service-provider/echo/" + str, String.class);
}
```
}