SpringBoot整合Dubbo+Zookeeper进行分布式搭建系统

今天药忘吃喽~ 2023-07-01 13:54 42阅读 0赞

# **QUESTIONl:SpringBoot整合Dubbo+Zookeeper进行分布式搭建系统？** #

# **ANSWER：** #

# 一：创建项目模块 #

## 1.1.创建一个Empty Project ##

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名称:Dubbo

## 1.2.创建一个Provider模块 ##

这里采用SpringBoot快速搭建。

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3lhbmcxMzU2Mzc1ODEyOA_size_16_color_FFFFFF_t_70 1][]

## 1.3.创建Consumer模块 ##

创建完成后代码架构:

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3lhbmcxMzU2Mzc1ODEyOA_size_16_color_FFFFFF_t_70 2][]

# 二：provider代码部分 #

## 2.1导入provider.xml依赖 ##

<?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>2.2.1.RELEASE</version>
            <relativePath/> 
        </parent>
        <groupId>com.xy</groupId>
        <artifactId>provider</artifactId>
        <version>0.0.1-SNAPSHOT</version>
        <name>provider</name>
        <description>Demo project for Spring Boot</description>
    
        <properties>
            <java.version>1.8</java.version>
        </properties>
    
        <dependencies>
    
            
            <dependency>
                <groupId>org.apache.dubbo</groupId>
                <artifactId>dubbo-spring-boot-starter</artifactId>
                <version>2.7.3</version>
            </dependency>
    
            
            <dependency>
                <groupId>com.github.sgroschupf</groupId>
                <artifactId>zkclient</artifactId>
                <version>0.1</version>
                <exclusions>
                    <exclusion>
                        <artifactId>slf4j-log4j12</artifactId>
                        <groupId>org.slf4j</groupId>
                    </exclusion>
                </exclusions>
            </dependency>
    
            
            <dependency>
                <groupId>org.apache.curator</groupId>
                <artifactId>curator-framework</artifactId>
                <version>2.13.0</version>
            </dependency>
            <dependency>
                <groupId>org.apache.curator</groupId>
                <artifactId>curator-recipes</artifactId>
                <version>2.13.0</version>
            </dependency>
            
            <dependency>
                <groupId>org.apache.zookeeper</groupId>
                <artifactId>zookeeper</artifactId>
                <version>3.4.13</version>
                <exclusions>
                    <exclusion>
                        <artifactId>slf4j-log4j12</artifactId>
                        <groupId>org.slf4j</groupId>
                    </exclusion>
                </exclusions>
            </dependency>
    
            <dependency>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-starter-web</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>
                </plugin>
            </plugins>
        </build>
    
    </project>

## 2.2创建POJO类 ##

创建一个User实体类，只做简单的测试:

package com.xy.provider.pojo;
    
    import java.io.Serializable;
    
    public class User implements Serializable {
        private static final long serialVersionUID = -7341603933521593227L;
        private Long id;
        private String username;
        private String password;
        private Integer age;
    
        public static long getSerialVersionUID() {
            return serialVersionUID;
        }
    
        public Long getId() {
            return id;
        }
    
        public void setId(Long id) {
            this.id = id;
        }
    
        public String getUsername() {
            return username;
        }
    
        public void setUsername(String username) {
            this.username = username;
        }
    
        public String getPassword() {
            return password;
        }
    
        public void setPassword(String password) {
            this.password = password;
        }
    
        public Integer getAge() {
            return age;
        }
    
        public void setAge(Integer age) {
            this.age = age;
        }
    
        @Override
        public String toString() {
            return "User{" +
                    "id=" + id +
                    ", username='" + username + '\'' +
                    ", password='" + password + '\'' +
                    ", age=" + age +
                    '}';
        }
    }

## 2.3创建接口及实现类 ##

创建userService接口:

package com.xy.provider.service;
    
    import com.xy.provider.pojo.User;
    
    import java.util.List;
    
    public interface UserService {
        public List<User> findAll();
        public void test();
    }

UserServiceImpl实现类:

package com.xy.provider.service.impl;
    
    import com.xy.provider.pojo.User;
    import com.xy.provider.service.UserService;
    import org.apache.dubbo.config.annotation.Service;
    import org.springframework.stereotype.Component;
    
    import java.util.ArrayList;
    import java.util.List;
    
    @Service    //这里要用dubbo的service，在项目一启动就注册到注册中心
    @Component      //使用了Dubbo尽量不要用@Service
    public class UserServiceImpl implements UserService {
        @Override
        public List<User> findAll() {
            System.out.println("查询所有");
            List<User> list = new ArrayList<User>();
            for (int i = 0; i < 10; i++) {
                User user = new User();
                user.setAge(10 + i);
                user.setId(Long.valueOf(i + 1));
                user.setPassword("123456");
                user.setUsername("username_" + i);
                list.add(user);
            }
            return list;
        }
    
        @Override
        public void test() {
            System.out.println("dubbo");
        }
    }

## 2.4构造application.properties ##

#提供者名称
    dubbo.application.name=provider
    #注册中心地址
    dubbo.registry.address=zookeeper://www.youngxy.top:2181
    #哪些服务要注册
    dubbo.scan.base-packages=com.xy.provider.service

# ![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3lhbmcxMzU2Mzc1ODEyOA_size_16_color_FFFFFF_t_70 3][] #

#  #

# 三：consumer代码部分 #

## 3.1导入consumer.xml依赖 ##

<?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>2.2.4.RELEASE</version>
            <relativePath/> 
        </parent>
        <groupId>com.xy</groupId>
        <artifactId>consumer</artifactId>
        <version>0.0.1-SNAPSHOT</version>
        <name>consumer</name>
        <description>Demo project for Spring Boot</description>
    
        <properties>
            <java.version>1.8</java.version>
        </properties>
    
        <dependencies>
            
            <dependency>
                <groupId>org.apache.dubbo</groupId>
                <artifactId>dubbo-spring-boot-starter</artifactId>
                <version>2.7.3</version>
            </dependency>
    
            
            <dependency>
                <groupId>com.github.sgroschupf</groupId>
                <artifactId>zkclient</artifactId>
                <version>0.1</version>
                <exclusions>
                    <exclusion>
                        <artifactId>slf4j-log4j12</artifactId>
                        <groupId>org.slf4j</groupId>
                    </exclusion>
                </exclusions>
            </dependency>
    
            
            <dependency>
                <groupId>org.apache.curator</groupId>
                <artifactId>curator-framework</artifactId>
                <version>2.13.0</version>
            </dependency>
            <dependency>
                <groupId>org.apache.curator</groupId>
                <artifactId>curator-recipes</artifactId>
                <version>2.13.0</version>
            </dependency>
            
            <dependency>
                <groupId>org.apache.zookeeper</groupId>
                <artifactId>zookeeper</artifactId>
                <version>3.4.13</version>
                <exclusions>
                    <exclusion>
                        <artifactId>slf4j-log4j12</artifactId>
                        <groupId>org.slf4j</groupId>
                    </exclusion>
                </exclusions>
            </dependency>
            <dependency>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-starter-web</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>
            <dependency>
                <groupId>com.xy</groupId>
                <artifactId>provider</artifactId>
                <version>0.0.1-SNAPSHOT</version>
            </dependency>
        </dependencies>
    
        <build>
            <plugins>
                <plugin>
                    <groupId>org.springframework.boot</groupId>
                    <artifactId>spring-boot-maven-plugin</artifactId>
                </plugin>
            </plugins>
        </build>
    
    </project>

## 3.2创建实现类 ##

消费者要获取提供者的服务，定义消费者实现类:

package com.xy.consumer.service;
    
    import com.xy.provider.pojo.User;
    import com.xy.provider.service.UserService;
    import com.xy.provider.service.impl.UserServiceImpl;
    import org.apache.dubbo.config.annotation.Reference;
    import org.springframework.stereotype.Service;
    
    import java.util.List;
    
    @Service        //这里是Spring的服务，表示放到容器中
    public class ConsumerService {
        /*
        * 想要拿到UserService，要到注册中心去拿
        * */
        @Reference
        private UserService userService;    //引用，pom导入相关依赖
        public void consume(){
            System.out.println("test");
            List<User> users = userService.findAll();
            for (User user:users
                 ) {
                System.out.println(user);
            }
           userService.test();
        }
    }

## 3.3构造application.properties ##

#SpringBoot端口
    server.port=8081
    #消费者去注册中心获取服务需要暴露自己的名称
    dubbo.application.name=consumer
    #注册中心的地址
    dubbo.registry.address=zookeeper://www.youngxy.top:2181

## 3.4创建测试类 ##

package com.xy.consumer;
    
    
    import com.xy.consumer.service.ConsumerService;
    import com.xy.provider.pojo.User;
    import com.xy.provider.service.UserService;
    import org.apache.dubbo.config.annotation.Reference;
    import org.junit.jupiter.api.Test;
    import org.springframework.beans.factory.annotation.Autowired;
    import org.springframework.boot.test.context.SpringBootTest;
    
    import java.util.List;
    
    @SpringBootTest
    class ConsumerApplicationTests {
        @Autowired
        private ConsumerService consumerService;
        @Test
        public void testConsume(){
            consumerService.consume();
            System.out.println("成功");
        }
    
    }

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3lhbmcxMzU2Mzc1ODEyOA_size_16_color_FFFFFF_t_70 4][]

# 四：打开dubbo-admin平台 #

首先在本地或者云服务器上面安装好dubbo软件，详情请参照:[搭建分布式环境:Dubbo+Zookeeper][Dubbo_Zookeeper]

在浏览器输入:ip:8080/dubbo-admin-2.5.4-SNAPSHOT输入密码进入。

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3lhbmcxMzU2Mzc1ODEyOA_size_16_color_FFFFFF_t_70 5][]

# 五：SpringBoot和Dubbo、Zookeeper版本不兼容问题的解决 #

## 5.1官方匹配的版本 ##

请参考：[SrpingBoot整合Zookeeper和Dubbo的版本匹配问题][SrpingBoot_Zookeeper_Dubbo]

## 5.2依赖冲突 ##

请参考：[依赖包冲突 ][Link 1]

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[Dubbo_Zookeeper]: https://blog.csdn.net/yang13563758128/article/details/104069965
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[SrpingBoot_Zookeeper_Dubbo]: https://blog.csdn.net/yang13563758128/article/details/104071613
[Link 1]: https://blog.csdn.net/yang13563758128/article/details/104071630