-肆行无忌网

发布时间：2025-06-24 20:26:33 作者：北方职教升学中心阅读量：032

👀本期介绍

本期主要介绍微服务~Nacos

文章目录

搭建父项目

服务提供者Provider

搭建服务

创建服务

查看服务

注册异常

服务消费者Consumer

搭建服务

创建服务

查询服务

搭建父项目

项目名：nacos-parent-2.1
添加坐标

<parent>        <groupId>org.springframework.cloud</groupId>        <artifactId>spring-cloud-build</artifactId>        <version>2.3.5.RELEASE</version>    </parent>    <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：

<dependencies>        <!-- web 启动类 -->        <dependency>            <groupId>org.springframework.boot</groupId>            <artifactId>spring-boot-starter-web</artifactId>        </dependency>        <!-- 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: 8070spring:  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;@RestControllerpublic 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

<dependencies>        <!-- web 启动类 -->        <dependency>            <groupId>org.springframework.boot</groupId>            <artifactId>spring-boot-starter-web</artifactId>        </dependency>        <!-- 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: 8071spring:  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;@Componentpublic 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;@RestControllerpublic 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);    }}