微服務搭建（SpringBoot + Dubbo + Nacos）

1.項目接口

2. 編輯pom.xml和application.yml文件

2.1父工程

pom.xml

<?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>2.7.10</version><relativePath/></parent><groupId>com.hanxun</groupId><artifactId>crmbe-service-backend</artifactId><packaging>pom</packaging><version>1.0</version><properties><java.version>1.8</java.version><spring.boot.version>2.7.10</spring.boot.version><dubbo.version>3.0.10</dubbo.version><nacos-client.version>2.1.1</nacos-client.version></properties><modules><module>crmbe-api</module><module>crmbe-consumer</module><module>crmbe-provider</module></modules><dependencyManagement><dependencies><dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter</artifactId><version>${spring.boot.version}</version></dependency><dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-web</artifactId><version>${spring.boot.version}</version></dependency><dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-test</artifactId><version>${spring.boot.version}</version><scope>test</scope></dependency><!-- Dubbo核心依賴 --><dependency><groupId>org.apache.dubbo</groupId><artifactId>dubbo-spring-boot-starter</artifactId><version>${dubbo.version}</version></dependency><dependency><groupId>org.apache.dubbo</groupId><artifactId>dubbo-registry-nacos</artifactId><version>${dubbo.version}</version><exclusions><!-- 排除適配層自帶的 Nacos 客戶端，避免版本沖突 --><exclusion><groupId>com.alibaba.nacos</groupId><artifactId>nacos-client</artifactId></exclusion></exclusions></dependency><!-- Nacos 客戶端核心依賴 --><dependency><groupId>com.alibaba.nacos</groupId><artifactId>nacos-client</artifactId><version>${nacos-client.version}</version></dependency><dependency><groupId>com.alibaba.spring</groupId><artifactId>spring-context-support</artifactId><version>1.0.11</version></dependency><dependency><groupId>com.google.guava</groupId><artifactId>guava</artifactId><version>30.1-jre</version></dependency></dependencies></dependencyManagement>
</project>

2.2 api 模塊

pom.xml

<?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.hanxun</groupId><artifactId>crmbe-service-backend</artifactId><version>1.0</version></parent><groupId>com.hanxun</groupId><artifactId>crmbe-api</artifactId><version>1.0</version><dependencies><dependency><groupId>com.alibaba.spring</groupId><artifactId>spring-context-support</artifactId></dependency></dependencies></project>

2.3 consumer 模塊

代碼結構：

dubbo注解：

Controller中使用 @DubboReference? 進行依賴注入

@RestController
@RequestMapping("/test")
public class UserController {@DubboReference(version = "1.0")private UserService userService;@GetMapping("/get")public Object get(String id){List<SysUser> userList= userService.getUserList();//        return "hello world !!!";return userList;}
}

pom.xml

<?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.hanxun</groupId><artifactId>crmbe-service-backend</artifactId><version>1.0</version></parent><groupId>com.hanxun</groupId><artifactId>crmbe-consumer</artifactId><version>1.0</version><dependencies><dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-web</artifactId></dependency><dependency><groupId>com.hanxun</groupId><artifactId>crmbe-api</artifactId><version>1.0</version></dependency><!-- dubbo --><dependency><groupId>org.apache.dubbo</groupId><artifactId>dubbo-spring-boot-starter</artifactId></dependency><dependency><groupId>org.apache.dubbo</groupId><artifactId>dubbo-registry-nacos</artifactId></dependency><dependency><groupId>com.alibaba.nacos</groupId><artifactId>nacos-client</artifactId></dependency><dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-test</artifactId><scope>test</scope></dependency><dependency><groupId>com.google.guava</groupId><artifactId>guava</artifactId></dependency></dependencies><build><finalName>${project.artifactId}</finalName><plugins><plugin><groupId>org.springframework.boot</groupId><artifactId>spring-boot-maven-plugin</artifactId><version>${spring.boot.version}</version><executions><execution><goals><goal>repackage</goal></goals></execution></executions></plugin></plugins></build></project>

?yml文件

# 應用名稱
spring:application:name: crmbe-consumer
#  cloud:# Nacos配置中心
#    nacos:
#      server-addr: 127.0.0.1:8848 # Nacos 服務器地址
#      username: nacos # Nacos 賬號
#      password: nacos # Nacos 密碼
#      discovery: # 【配置中心】配置項
#        namespace: dev # 命名空間。這里使用 dev 開發環境
#        group: DEFAULT_GROUP # 使用的 Nacos 配置分組，默認為 DEFAULT_GROUP
#        metadata:
#          version: 1.0.0 # 服務實例的版本號，可用于灰度發布
#      config: # 【注冊中心】配置項
#        namespace: dev # 命名空間。這里使用 dev 開發環境
#        group: DEFAULT_GROUP # 使用的 Nacos 配置分組，默認為 DEFAULT_GROUPconfig:import:- optional:nacos:application.yml- optional:nacos:${spring.application.name}.yml# Dubbo配置
dubbo:application:name: crmbe-consumerlogger: slf4jprotocol:name: dubboport: -1registry:address: nacos://127.0.0.1:8848parameters:namespace: dev# 服務端口
server:port: 8082servlet:context-path: /crmbe-consumer

2.4 provider模塊

代碼結構：

dubbo 注解：

UserSeviceImpl 使用 @DubboService 注解暴露服務

@DubboService(version = "1.0")
public class UserSeviceImpl implements UserService {@Overridepublic List<SysUser> getUserList() {List<SysUser> userlist = new ArrayList<SysUser>();SysUser user1 = new SysUser("張三",20, LocalDateTime.now());SysUser user2 = new SysUser("李四",30,LocalDateTime.now());SysUser user3 = new SysUser("王五",31,LocalDateTime.now());userlist.add(user1);userlist.add(user2);userlist.add(user3);userlist.add(user3);return userlist;}
}

Application 類加 @EnableDubbo

@EnableDubbo
@SpringBootApplication
public class CrmbeProviderApplication {public static void main(String[] args) {SpringApplication.run(CrmbeProviderApplication.class, args);System.out.println("--------------Dubbo Provider 啟動成功-----------------");}}

pom.xml

<?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.hanxun</groupId><artifactId>crmbe-service-backend</artifactId><version>1.0</version></parent><artifactId>crmbe-provider</artifactId><version>1.0</version><dependencies><dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-web</artifactId></dependency><dependency><groupId>com.hanxun</groupId><artifactId>crmbe-api</artifactId><version>1.0</version></dependency><dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter</artifactId></dependency><!-- dubbo --><dependency><groupId>org.apache.dubbo</groupId><artifactId>dubbo-spring-boot-starter</artifactId></dependency><dependency><groupId>org.apache.dubbo</groupId><artifactId>dubbo-registry-nacos</artifactId></dependency><dependency><groupId>com.alibaba.nacos</groupId><artifactId>nacos-client</artifactId></dependency><dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-test</artifactId><scope>test</scope></dependency><dependency><groupId>com.google.guava</groupId><artifactId>guava</artifactId></dependency></dependencies><build><finalName>${project.artifactId}</finalName><plugins><plugin><groupId>org.apache.maven.plugins</groupId><artifactId>maven-compiler-plugin</artifactId><version>3.8.1</version><configuration><!-- 明確指定 Java 版本為 1.8 --><source>1.8</source><target>1.8</target><!-- 可選：指定編碼 --><encoding>UTF-8</encoding></configuration></plugin><plugin><groupId>org.springframework.boot</groupId><artifactId>spring-boot-maven-plugin</artifactId><version>${spring.boot.version}</version><executions><execution><goals><goal>repackage</goal></goals></execution></executions></plugin></plugins></build></project>

?yml文件

# 應用名稱
spring:application:name: crmbe-providerconfig:import:- optional:nacos:application.yml- optional:nacos:${spring.application.name}.yml# Dubbo配置
dubbo:application:name: crmbe-providerlogger: slf4jprotocol:name: dubboport: -1registry:address: nacos://127.0.0.1:8848parameters:namespace: devconfig-center:address: nacos://127.0.0.1:8848parameters:namespace: devscan:base-packages: com.hanxun# 服務端口
server:port: 8081