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dubbo+springboot項目的搭建

本文轉載自   查看原文   2021-11-16 19:19   767    JAVA/ duboo/ dubbo/ SpringBoot

原因

因為公司的項目一直用的都是分布式項目，而我只知道用，卻不知道怎么去搭建，就整的很煩，逐漸暴躁。這兩天一直都在找怎么搭建，因為自己的原因，所以一直搭建不成功，來來回回刪了五六遍，也重建了很多次。

 推薦

萬幸我一直沒有放棄，搜了兩個文章，結合去搭建，終於成功。

dubbo項目搭建：https://blog.csdn.net/mapboo/article/details/106682815

多模塊項目的搭建：https://blog.csdn.net/tangthh123/article/details/106837999

Dubbo配置：https://www.jianshu.com/p/150c11275a9e

 

 搭建

 提示

父層使用springboot框架，子層provider和customer使用springboot框架，api隨意。

1、框架創建

 

創建過程中不選擇任何依賴。創建完成后刪除文件（除.idea、pom.xml、springboot-dubbo-demo.iml外）。 

 

 

然后點擊左上角-》新建-》新模塊，按照創建springboot的方式創建dubbo-api、dubbo-provider、dubbo-customer三個子模塊。

其中api模塊，我只用於放置enity、servic，主要用於實體類、service接口；

provider模塊，用於放置serviceImpl，主要用於邏輯處理、操作數據庫；

customer模塊，用於放置controller，主要用於為前端頁面提供接口。 按照這樣的思路，在創建子模塊的時候請自行按照需求添加依賴。

2、父層配置

 

創建完之后的項目框架是這樣的，先配置父層pom `

<?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><!--使用springboot項目創建完自帶的，參考多個版本創建項目的經驗才知道的-->
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>2.5.6</version>
        <relativePath/> <!-- lookup parent from repository -->
    </parent>

    <groupId>com.example</groupId>
    <artifactId>springboot-dubbo-demo</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <name>springboot-dubbo-demo</name>
    <description>springboot-dubbo-demo</description>
    <packaging>pom</packaging><!--父層打包方式為pom，默認為jar-->

    <properties>
        <java.version>1.8</java.version>
    </properties>

    <modules><!--添加三個子模塊-->
        <module>dubbo-api</module>
        <module>dubbo-provider</module>
        <module>dubbo-customer</module>
    </modules>

    <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><!--這里是打包時可能會因為test塊導致項目編譯不了，所以需要排除test塊的編譯，也可點擊maven窗口的類似於閃電-->
            <exclusions>
                <exclusion>
                    <groupId>org.junit.vintage</groupId>
                    <artifactId>junit-vintage-engine</artifactId>
                </exclusion>
            </exclusions>
        </dependency>
    </dependencies>

    <build>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
            </plugin>
        </plugins>
    </build>

</project>

3、api層配置

api層只提供接口，或者實體類，所以不需要啟動類和配置文件，可刪除（根據個人意願，不刪也沒事）。pom文件基本沒什么可以動的，屬於模塊添加好就有的。

<?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>2.5.6</version>
        <relativePath/> <!-- lookup parent from repository -->
    </parent>
    <groupId>com.example</groupId>
    <artifactId>dubbo-api</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <name>dubbo-api</name>
    <description>dubbo-api</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.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
            <exclusions>
                <exclusion>
                    <groupId>org.junit.vintage</groupId>
                    <artifactId>junit-vintage-engine</artifactId>
                </exclusion>
            </exclusions>
        </dependency>
    </dependencies>

    <build>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
<!--                僅需要被調用，不需要jar包-->
                <configuration>
                    <skip>true</skip>
                </configuration>
            </plugin>
        </plugins>
    </build>

</project>

 

 

 根據以上借鑒的教程創建service

public interface HelloService {
    String sayHello(String name);
}

4、provider層

首先先動pom

<?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>2.5.6</version>
        <relativePath/> <!-- lookup parent from repository -->
    </parent>

    <groupId>com.example</groupId>
    <artifactId>dubbo-provider</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <name>dubbo-provider</name>
    <description>dubbo-provider</description>

    <properties>
        <java.version>1.8</java.version>
<!--        鎖定版本，在下方的依賴中統一調用-->
        <zookeeper.version>3.4.13</zookeeper.version>
        <dubbo.version>0.2.0</dubbo.version>
    </properties>

    <dependencies>
<!--        按照provider調用api，customer調用provider的順序，需要在調用者的pom導入被調用者的依賴，參數在被調用者pom的parent下-->
        <dependency>
            <groupId>com.example</groupId>
            <artifactId>dubbo-api</artifactId>
            <version>0.0.1-SNAPSHOT</version>
        </dependency>

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

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

        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
            <scope>runtime</scope>
        </dependency>

        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
            <exclusions>
                <exclusion>
                    <groupId>org.junit.vintage</groupId>
                    <artifactId>junit-vintage-engine</artifactId>
                </exclusion>
            </exclusions>
        </dependency>

        <dependency>
            <groupId>com.alibaba.boot</groupId>
            <artifactId>dubbo-spring-boot-starter</artifactId>
<!--            使用以上被鎖定的版本-->
            <version>${dubbo.version}</version>
        </dependency>

        <dependency>
            <groupId>org.apache.zookeeper</groupId>
            <artifactId>zookeeper</artifactId>
            <version>${zookeeper.version}</version>
            <exclusions>
<!--                log4j 和 slf4j-log4j12 需要排除，否則會與zookeeper沖突；-->
                <exclusion>
                    <groupId>org.slf4j</groupId>
                    <artifactId>slf4j-log4j12</artifactId>
                </exclusion>
                <exclusion>
                    <groupId>log4j</groupId>
                    <artifactId>log4j</artifactId>
                </exclusion>
            </exclusions>
        </dependency>
    </dependencies>

    <build>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
                <configuration>
<!--                    指定啟動類-->
                    <mainClass>com.example.dubboprovider.DubboProviderApplication</mainClass>
                </configuration>
            </plugin>
        </plugins>
    </build>

</project>

properties.yml的配置

server:
  port: 8091
dubbo:
  application:
    name: dubbo-provider
  protocol:
    name: dubbo
    port: 20880
  registry:
    address: zookeeper://127.0.0.1:2181


spring:
  datasource:
    driver-class-name: com.mysql.cj.jdbc.Driver
    url: jdbc:mysql://127.0.0.1:3306/test?characterEncoding=utf8&useSSL=false&serverTimezone=GMT%2B8&rewriteBatchedStatements=true&allowPublicKeyRetrieval=true
    username: root
    password: 123456

在resources下新建一個dubbo-provider.xml文件，用於存放調用的service

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xmlns:dubbo="http://dubbo.apache.org/schema/dubbo"
       xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-4.3.xsd http://dubbo.apache.org/schema/dubbo http://dubbo.apache.org/schema/dubbo/dubbo.xsd">
    <!--注冊服務到zookeeper-->
    <dubbo:registry address="zookeeper://127.0.0.1:2181"/>
    <!-- 用dubbo協議在20880端口暴露服務 -->
    <dubbo:protocol name="dubbo" port="20880"/>
    <dubbo:service ref="helloService" interface="com.example.dubboapi.service.HelloService"/>
</beans>

啟動類注明dubbo-provider.xml的位置

import com.alibaba.dubbo.config.spring.context.annotation.EnableDubbo;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.context.annotation.ImportResource;

@EnableDubbo
@ImportResource({"classpath:dubbo-provider.xml"})
@SpringBootApplication
public class DubboProviderApplication {

    public static void main(String[] args) {
        SpringApplication.run(DubboProviderApplication.class, args);
    }

}

實現類在調用時需要在@Service注明service的名字，dubbo-provider.xml的ref

import com.example.dubboapi.service.HelloService;
import org.springframework.stereotype.Service;

@Service("helloService")
public class HelloServiceImpl implements HelloService {

    @Override
    public String sayHello(String name) {
        System.out.println(name);
        return "Hello, " + name;
    }
}

項目接口如下

 

 5、customer模塊

先配置pom

<?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>2.5.6</version>
        <relativePath/> <!-- lookup parent from repository -->
    </parent>
    <groupId>com.example</groupId>
    <artifactId>dubbo-customer</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <name>dubbo-customer</name>
    <description>dubbo-customer</description>
    <properties>
        <java.version>1.8</java.version>
        <zookeeper.version>3.4.13</zookeeper.version>
        <dubbo.version>0.2.0</dubbo.version>
    </properties>
    <dependencies>
        <dependency>
            <groupId>com.example</groupId>
            <artifactId>dubbo-provider</artifactId>
            <version>0.0.1-SNAPSHOT</version>
        </dependency>
        <dependency>
            <groupId>com.example</groupId>
            <artifactId>dubbo-api</artifactId>
            <version>0.0.1-SNAPSHOT</version>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>

        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-devtools</artifactId>
            <scope>runtime</scope>
            <optional>true</optional>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-configuration-processor</artifactId>
            <optional>true</optional>
        </dependency>
        <dependency>
            <groupId>org.projectlombok</groupId>
            <artifactId>lombok</artifactId>
            <optional>true</optional>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
            <exclusions>
                <exclusion>
                    <groupId>org.junit.vintage</groupId>
                    <artifactId>junit-vintage-engine</artifactId>
                </exclusion>
            </exclusions>
        </dependency>

        <dependency>
            <groupId>com.alibaba.boot</groupId>
            <artifactId>dubbo-spring-boot-starter</artifactId>
            <version>${dubbo.version}</version>
        </dependency>

        <dependency>
            <groupId>org.apache.zookeeper</groupId>
            <artifactId>zookeeper</artifactId>
            <version>${zookeeper.version}</version>
            <exclusions>
                <!--                log4j 和 slf4j-log4j12 需要排除，否則會與zookeeper沖突；-->
                <exclusion>
                    <groupId>org.slf4j</groupId>
                    <artifactId>slf4j-log4j12</artifactId>
                </exclusion>
                <exclusion>
                    <groupId>log4j</groupId>
                    <artifactId>log4j</artifactId>
                </exclusion>
            </exclusions>
        </dependency>
    </dependencies>

    <build>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
                <configuration>
                   <mainClass>com.example.dubbocustomer.DubboCustomerApplication</mainClass>
                </configuration>
            </plugin>
        </plugins>
    </build>

</project>

properties.yml的配置

server:
  port: 8092
dubbo:
  application:
    name: dubbo-customer
  registry:
    address: zookeeper://127.0.0.1:2181

spring:
  datasource:
    driver-class-name: com.mysql.cj.jdbc.Driver
    url: jdbc:mysql://127.0.0.1:3306/test?characterEncoding=utf8&useSSL=false&serverTimezone=GMT%2B8&rewriteBatchedStatements=true&allowPublicKeyRetrieval=true
    username: root
    password: 123456

在resources下新建一個dubbo-customer.xml文件，用於存放調用的service

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xmlns:dubbo="http://dubbo.apache.org/schema/dubbo"
       xmlns="http://www.springframework.org/schema/beans"
       xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-4.3.xsd
       http://dubbo.apache.org/schema/dubbo http://dubbo.apache.org/schema/dubbo/dubbo.xsd">

    <!-- 系統服務 -->
    <dubbo:reference id="helloService" interface="com.example.dubboapi.service.HelloService" check="false" protocol="dubbo"/>

</beans>

啟動類注明dubbo-customer.xml的位置

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.context.annotation.ImportResource;

@ImportResource({"classpath:dubbo-customer.xml"})
@SpringBootApplication
public class DubboCustomerApplication {

    public static void main(String[] args) {
        SpringApplication.run(DubboCustomerApplication.class, args);
    }

}

controller的編寫

import com.example.dubboapi.service.HelloService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.bind.annotation.RestController;

@RestController
public class HelloController {

    @Autowired 
    private HelloService helloService;

    @GetMapping("/sayHello")
    private String sayHello(@RequestParam String name){

        System.out.println("調用sayHello成功了..." + " name:" + name);

        return helloService.sayHello(name);
    }

}

項目結構如下：

 

 這時，大概就配置完成了，先啟動provider，再啟動customer（前提是zookeeper是開啟的，不然項目無法啟動）

地址欄輸入http://localhost:8092/sayHello?name=一語驚醒夢中人

 


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