电商系统练手开发（三）--Spring cloud集成nacos做服务发现

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#spring cloud #服务发现 #java

于 2022-10-19 15:47:00 首次发布

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本文介绍了如何在SpringBoot项目中集成Nacos作为服务发现工具，包括新建父项目、创建子模块、配置依赖及应用YAML，详细步骤助您完成集成并验证服务注册与发现。

Spring cloud集成nacos

Spring cloud集成nacos做 服务发现
1、新建一个父项目，用idea新建spring boot项目。删掉src文件夹。
pom.xml文件如下所示：可以直接复制

<?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>
    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>2.7.4</version>
        <relativePath/> <!-- lookup parent from repository -->
    </parent>
    <groupId>com.example</groupId>
    <artifactId>mall-owner</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <name>mall-owner</name>
    <description>Demo project for Spring Cloud</description>
    <packaging>pom</packaging>
    <modules>
        <module>mall-common</module>
    </modules>
    <properties>
        <java.version>1.8</java.version>
        <spring-cloud.version>2021.0.4</spring-cloud.version>
        <spring-cloud-alibaba.version>2021.0.4.0</spring-cloud-alibaba.version>
    </properties>
    <dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter</artifactId>
        </dependency>

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

        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>

        <!-- https://mvnrepository.com/artifact/org.springframework.cloud/spring-cloud-starter-bootstrap -->
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-bootstrap</artifactId>
            <version>3.0.3</version>
        </dependency>

    </dependencies>
    <dependencyManagement>
        <dependencies>
            <dependency>
                <groupId>org.springframework.cloud</groupId>
                <artifactId>spring-cloud-dependencies</artifactId>
                <version>${spring-cloud.version}</version>
                <type>pom</type>
                <scope>import</scope>
            </dependency>
            <dependency>
                <groupId>com.alibaba.cloud</groupId>
                <artifactId>spring-cloud-alibaba-dependencies</artifactId>
                <version>${spring-cloud-alibaba.version}</version>
                <type>pom</type>
                <scope>import</scope>
            </dependency>
        </dependencies>
    </dependencyManagement>
    <build>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
            </plugin>
        </plugins>
    </build>

    <repositories>
        <repository>
            <id>central</id>
            <url>http://maven.aliyun.com/nexus/content/repositories/central/</url>
        </repository>
    </repositories>

    <pluginRepositories>
        <pluginRepository>
            <id>central</id>
            <url>http://maven.aliyun.com/nexus/content/repositories/central/</url>
        </pluginRepository>
    </pluginRepositories>

</project>

2、在父项目上新建模块。命名为mall-common
在这里插入图片描述
pom.xml文件做如下修改。

<?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>
    <parent>
        <groupId>com.example</groupId>
        <artifactId>mall-owner</artifactId>
        <version>0.0.1-SNAPSHOT</version>
    </parent>
    <artifactId>mall-common</artifactId>
    <name>mall-common</name>
    <description>mall-commmon</description>
    <dependencies>
<!--        nacos  注册中心  start-->
        <dependency>
            <groupId>com.alibaba.cloud</groupId>
            <artifactId>spring-cloud-starter-alibaba-nacos-discovery</artifactId>
        </dependency>
<!--        nacos  注册中心  end-->
    </dependencies>
</project>

3、在mall-common项目上做如下修改
（1）添加项目启动类上面添加@EnableDiscoveryClient注解(现在可加也可不加，以前版本必须加)
在这里插入图片描述
（2）在配置文件aplication.yml添加注册信息

server:
  port: 8080
spring:
  application:
    name: mall-common
  cloud:
    nacos:
      discovery:
        server-addr: 127.0.0.1:8848
management:
  endpoints:
    web:
      exposure:
        include=*

4、启动子模块，会在nacos中看到相应服务，即为配置成功。
在这里插入图片描述