springCloud alibaba+nacos模块化项目搭建_ruo_yuan

网络 02-07 1523

背景

今天本来很想写一个由数据读取网关配置，避免每次上新模块都会去修改配置文件导致频繁操作。本以为集成个sc+nacos应该是一件很easy的事情，纸上得来终觉浅，一躬行发现问题接憧而来。接下来就一步一步的实现springCloud alibaba+nacos模块化项目搭建。

nacos本地环境搭建

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建库并且导入sql

导入config目录的nacos-mysql.sql文件

nacos mysql连接处理

application.properties文件

此处新增mysql配置

spring.datasource.platform=mysql db.url.0=jdbc:mysql://127.0.0.1:3306/nacos_config?characterEncoding=utf8&connectTimeout=1000&socketTimeout=3000&autoReconnect=true&useUnicode=true&useSSL=false&serverTimezone=UTC db.user=root db.password=root 单机模式修改启动文件

nacos默认是启动集群模式，单机模式需要修改startup.cmd文件的set MODE=“standalone”

启动，不出意外应该是成功

访问地址：http://127.0.0.1:8848/nacos/ 默认账号密码：nacos|nacos

父pom完整文件 <?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>2.5.4</version> </parent> <groupId>com.ruoyuan.demo</groupId> <artifactId>starter-parent</artifactId> <version>1.0.1</version> <name>demoParent</name> <description>parent-jar</description> <packaging>pom</packaging> <properties> <java.version>1.8</java.version> <spring-cloud-alibaba.version>2.2.1.RELEASE</spring-cloud-alibaba.version> <spring-cloud.version>Hoxton.RELEASE</spring-cloud.version> <nacos.version>1.4.1</nacos.version> <spring-cloud-dependencies.version>2020.0.3</spring-cloud-dependencies.version> <spring-boot-dependencies.version>2.5.4</spring-boot-dependencies.version> <spring-cloud-alibaba-dependencies.version>2021.1</spring-cloud-alibaba-dependencies.version> <lombok.version>1.16.22</lombok.version> <mysql-connector-java.version>8.0.26</mysql-connector-java.version> <mybatis-plus.version>3.1.2</mybatis-plus.version> <druid-spring-boot-starter.version>1.1.9</druid-spring-boot-starter.version> <spring-cloud-starter-gateway.version>2.2.7.RELEASE</spring-cloud-starter-gateway.version> <nacos-discovery.version>2.2.7.RELEASE</nacos-discovery.version> <nacos-client.version>1.4.1</nacos-client.version> <javax.servlet-api.version>4.0.1</javax.servlet-api.version> <starter-alibaba-sentinel.version>2.2.1.RELEASE</starter-alibaba-sentinel.version> <starter-actuator.version>2.5.4</starter-actuator.version> </properties> <modules> <module>xxx</module> <module>cloud-gateway</module> </modules> <dependencyManagement> <dependencies>  <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-dependencies</artifactId> <version>${spring-boot-dependencies.version}</version> <type>pom</type> <scope>import</scope> </dependency> <dependency> <groupId>org.springframework.cloud</groupId> <artifactId>spring-cloud-dependencies</artifactId> <version>${spring-cloud-dependencies.version}</version> <type>pom</type> <scope>import</scope> </dependency>  <dependency> <groupId>com.alibaba.cloud</groupId> <artifactId>spring-cloud-alibaba-dependencies</artifactId> <version>${spring-cloud-alibaba-dependencies.version}</version> <type>pom</type> <scope>import</scope> </dependency>  <dependency> <groupId>com.alibaba.cloud</groupId> <artifactId>spring-cloud-starter-alibaba-sentinel</artifactId> <version>${starter-alibaba-sentinel.version}</version> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-actuator</artifactId> <version>${starter-actuator.version}</version> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-test</artifactId> <version>${spring-boot-dependencies.version}</version> <scope>test</scope> </dependency> <dependency> <groupId>org.projectlombok</groupId> <artifactId>lombok</artifactId> <version>${lombok.version}</version> </dependency> <dependency> <groupId>mysql</groupId> <artifactId>mysql-connector-java</artifactId> <scope>runtime</scope> <version>${mysql-connector-java.version}</version> </dependency> <dependency> <groupId>com.baomidou</groupId> <artifactId>mybatis-plus-boot-starter</artifactId> <version>${mybatis-plus.version}</version> </dependency> <dependency> <groupId>com.baomidou</groupId> <artifactId>mybatis-plus-boot-starter</artifactId> <version>${mybatis-plus.version}</version> </dependency>  <dependency> <groupId>com.alibaba</groupId> <artifactId>druid-spring-boot-starter</artifactId> <version>${druid-spring-boot-starter.version}</version> </dependency> <dependency> <groupId>org.springframework.cloud</groupId> <artifactId>spring-cloud-starter-gateway</artifactId> <version>${spring-cloud-starter-gateway.version}</version> </dependency>  <dependency> <groupId>com.alibaba.cloud</groupId> <artifactId>spring-cloud-starter-alibaba-nacos-discovery</artifactId> <version>${nacos-discovery.version}</version> </dependency>  <dependency> <groupId>com.alibaba.nacos</groupId> <artifactId>nacos-client</artifactId> <version>${nacos-client.version}</version> </dependency> <dependency> <groupId>javax.servlet</groupId> <artifactId>javax.servlet-api</artifactId> <version>${javax.servlet-api.version}</version> <scope>provided</scope> </dependency> </dependencies> </dependencyManagement> <build> <plugins> <plugin> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-maven-plugin</artifactId> </plugin> </plugins> </build> </project> 注意

注意这三者的依赖版本关系，如果项目报错Cannot resolve xxxxx:unknown 多半都是这几者的版本间依赖存在问题。pom依赖建议原封不动拷贝，然后自己酌情删除不需要的。

子pom完整 <?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.ruoyuan.demo</groupId> <artifactId>starter-parent</artifactId> <version>1.0.1</version> </parent> <groupId>com.ruoyuan.demo</groupId> <artifactId>gateway</artifactId> <version>1.0.1</version> <name>gateway</name> <packaging>jar</packaging> <description>Demo project for Spring Boot</description> <properties> <java.version>1.8</java.version> </properties> <dependencies> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter</artifactId> </dependency> <dependency> <groupId>org.springframework.cloud</groupId> <artifactId>spring-cloud-starter-loadbalancer</artifactId> </dependency>  <dependency> <groupId>com.alibaba.cloud</groupId> <artifactId>spring-cloud-starter-alibaba-sentinel</artifactId> </dependency> <dependency> <groupId>org.projectlombok</groupId> <artifactId>lombok</artifactId> </dependency> <dependency> <groupId>mysql</groupId> <artifactId>mysql-connector-java</artifactId> <scope>runtime</scope> </dependency> <dependency> <groupId>com.baomidou</groupId> <artifactId>mybatis-plus-boot-starter</artifactId> </dependency> <dependency> <groupId>com.baomidou</groupId> <artifactId>mybatis-plus-boot-starter</artifactId> </dependency>  <dependency> <groupId>com.alibaba</groupId> <artifactId>druid-spring-boot-starter</artifactId> </dependency> <dependency> <groupId>org.springframework.cloud</groupId> <artifactId>spring-cloud-starter-gateway</artifactId> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-actuator</artifactId> </dependency>  <dependency> <groupId>com.alibaba.cloud</groupId> <artifactId>spring-cloud-starter-alibaba-nacos-discovery</artifactId> </dependency>  <dependency> <groupId>javax.servlet</groupId> <artifactId>javax.servlet-api</artifactId> <scope>provided</scope> </dependency> </dependencies> <build> <plugins> <plugin> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-maven-plugin</artifactId> </plugin> </plugins> </build> </project>

pom文件建议原封不动拷贝，避免出现意料之外的问题

子模块配置文件 server: port: 8082 spring: application: name: demo-gateway cloud: nacos: discovery: server-addr: 127.0.0.1:8848

数据库相关配置自己去百度

启动类修改

最后再在子pom启动类上加上@EnableDiscoveryClient就可以启动了

如有问题，希望大家评论区留言多多指教！如觉得写得还可以，就给一个赞吧！