Featured image of post Dubbo快速搭建學習筆記
程式

Dubbo快速搭建學習筆記

弄了一年終於弄好了= =

學習來源

本文參考至

【【演示】SpringBoot+Dubbo+ZooKeeper 快速搭建】 https://www.bilibili.com/video/BV1XK411f7jL/?share_source=copy_web&vd_source=b38b089ffe2c29ef61bebcff0f458ed8

前言

入職了一年來，Dubbo一直是一個我很想學習，但又不知道何從下手的工具，這一年來斷斷續續看了

【黑马程序员Dubbo快速入门，Java分布式框架dubbo教程】 https://www.bilibili.com/video/BV1VE411q7dX/?share_source=copy_web&vd_source=b38b089ffe2c29ef61bebcff0f458ed8

【千锋教育Java微服务架构教程(SpringBoot+Dubbo+Zookeeper)】 https://www.bilibili.com/video/BV18b411v7Xr/?share_source=copy_web&vd_source=b38b089ffe2c29ef61bebcff0f458ed8

之類之類的教學，但這些影片要嘛過時，要嘛前面有一大串複雜繁瑣的配置，我往往在一開始的時候就卡關，最後不了了知，想去看dubbo官方的文件，明明上面寫快速入門，結果文件也是過時，東缺西缺的，根本沒辦法用，後來還遇到ZooKeeper無法安裝在M1的問題，霎那間真的萬念俱灰，直到最近又燃起熱情，決定再來學一次。

開頭還是一樣的卡關，正當我想放棄的時候我點開了【演示】SpringBoot+Dubbo+ZooKeeper 快速搭建，心裡想說死馬當活馬醫，沒想到居然真的成功了！

原始碼

https://github.com/Hoxton019030/Dubbo-Practice

不確定日後會不會有其他的操作，可以checkout到34205e76be46971e92eac34d6bb1a4cbb26bb435在操作會比較保險。

教學

Zookeeper配置

首先安裝zoo-keeper，安裝的方式請參考千迴百轉的ZooKeeper安裝。把zooKeeper啟動起來，會看到這樣子的畫面

image-20240731114827416

接著開啟IDEA，建立SpringBoot專案，由於Dubbo是個分布式的RPC框架，所以我們這邊選擇創建兩個模塊，dubbo-provider dubbo-cousumer來學習，會比較貼近真實的開發情況，創建多模塊要記得將父模塊的src資料夾刪除，否則會有問題，可以參考SideProject開發(2)-台股監控Web，裡面有我血淚的教訓

image-20240731165040633

我們先將相關的Maven依賴引入，由於我比較懶，我把大部分的依賴都寫在父模塊的POM中

Maven配置

 1
 2
 3
 4
 5
 6
 7
 8
 9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88

<?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>
    <packaging>pom</packaging>
    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>3.3.2</version>
        <relativePath/> <!-- lookup parent from repository -->
    </parent>
    <groupId>com.example</groupId>
    <artifactId>dubbo-practice</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <name>dubbo-practice</name>
    <description>dubbo-practice</description>
    <url/>
    <licenses>
        <license/>
    </licenses>
    <developers>
        <developer/>
    </developers>
    <scm>
        <connection/>
        <developerConnection/>
        <tag/>
        <url/>
    </scm>
    <properties>
        <java.version>17</java.version>
    </properties>
    <dependencies>
        <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.projectlombok</groupId>
            <artifactId>lombok</artifactId>
            <optional>true</optional>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
        </dependency>
        <!-- https://mvnrepository.com/artifact/org.apache.dubbo/dubbo-spring-boot-starter -->
        <dependency>
            <groupId>org.apache.dubbo</groupId>
            <artifactId>dubbo-spring-boot-starter</artifactId>
            <version>3.2.14</version>
        </dependency>
        <!-- https://mvnrepository.com/artifact/org.apache.dubbo/dubbo-registry-zookeeper -->
        <dependency>
            <groupId>org.apache.dubbo</groupId>
            <artifactId>dubbo-registry-zookeeper</artifactId>
            <version>3.2.14</version>
        </dependency>

    </dependencies>

    <build>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
                <configuration>
                    <excludes>
                        <exclude>
                            <groupId>org.projectlombok</groupId>
                            <artifactId>lombok</artifactId>
                        </exclude>
                    </excludes>
                </configuration>
            </plugin>
        </plugins>
    </build>

</project>

兩個子模塊的POM我也提供一下

 1
 2
 3
 4
 5
 6
 7
 8
 9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53

<?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>dubbo-practice</artifactId>
        <version>0.0.1-SNAPSHOT</version>
    </parent>
    <artifactId>dubbo-provider</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <name>dubbo-provider</name>
    <description>dubbo-provider</description>
    <url/>
    <licenses>
        <license/>
    </licenses>
    <developers>
        <developer/>
    </developers>
    <scm>
        <connection/>
        <developerConnection/>
        <tag/>
        <url/>
    </scm>
    <properties>
        <java.version>17</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>
        </dependency>
    </dependencies>

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

</project>


 1
 2
 3
 4
 5
 6
 7
 8
 9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60

<?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>dubbo-practice</artifactId>
        <version>0.0.1-SNAPSHOT</version>
    </parent>
    <groupId>com.example</groupId>
    <artifactId>dubbo-consumer</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <name>dubbo-consumer</name>
    <description>dubbo-consumer</description>
    <url/>
    <licenses>
        <license/>
    </licenses>
    <developers>
        <developer/>
    </developers>
    <scm>
        <connection/>
        <developerConnection/>
        <tag/>
        <url/>
    </scm>
    <properties>
        <java.version>17</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>
        </dependency>
        <dependency>
            <groupId>com.example</groupId>
            <artifactId>dubbo-provider</artifactId>
            <version>0.0.1-SNAPSHOT</version>
            <scope>compile</scope>
        </dependency>
    </dependencies>

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

</project>

Properties配置類

1
2
3
4
5

spring.application.name=dubbo-consumer
server.port=8081
dubbo.application.name=consumer-app
dubbo.registry.address=zookeeper://localhost:2181
dubbo.protocol.port=20881

1
2
3
4
5

spring.application.name=dubbo-provider
server.port=8082
dubbo.application.name=provider-app
dubbo.registry.address=zookeeper://localhost:2181
dubbo.protocol.port=20880

程式配置

我們首先先寫dubbo-provider的內容，寫兩個class，一個是interface，一個去實現它，會回傳一個Hello出去

image-20240731165806019

其中@DubboService這個就相當於將這個class的調用註冊到zookeeper中(這功能等等會教)

image-20240731165924881

由於是provider，所以要記得在啟動類上加上

@EnableDubbo

接著來寫dubbo-consumer，我們寫一個controller就好，用來接收helloService回傳的值，並返回出去，這樣就可以了

 1
 2
 3
 4
 5
 6
 7
 8
 9
10
11
12
13
14
15
16
17
18
19
20
21
22

package com.example.dubboconsumer.controller;

import com.example.dubboprovider.service.HelloService;
import lombok.extern.slf4j.Slf4j;
import org.apache.dubbo.config.annotation.DubboReference;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RestController;

@RestController
@Slf4j
public class HelloController {

    @DubboReference
    private HelloService helloService;

    @GetMapping("/hello")
    public String getHello(){
        log.info("呼叫控制器");
        return helloService.sayHello();
    }
}

寫法就像這樣，不是使用@Autowired來註冊bean，而是使用@DubboReferece來調用RPC，接著將兩個模塊啟動後就可以了！非常簡單又輕便的Dubbo就完成了！

使用ZooKeperCli查看註冊的服務

bin/zkCli.cmd的點開

image-20240731172505199

image-20240731172534989

就可以看到目前註冊的服務了

Licensed under CC BY-NC-SA 4.0