dubbo，zookeeper

1.           准备环境

(1)配置并启动zookeeper

1.解压zookeeper，修改conf下的配置文件名称为zoo.cfg

2.修改配置文件中的数据存储（日志）位置dataDir=D:\zookeeperdata之后直接运行

3.启动注册中心zkServer.cmd

(2)dubbo控制台

dubbo控制台访问地址：

http://localhost:7001

 

2.定义

RPC（Remote Procedure Call）远程过程调用，简单的理解是一个节点请求另一个节点提供的服务

 

 

3.创建工程及目录

common--------------maven工程---------------quickstart

provider---------------springboot工程

consumer---------------springboot工程

 

4.common

(1)  entity包

public class City implements Serializable {

    private Integer id;

    private String cityName;

 

    @Override

    public String toString() {

        return "City{" +

                "id=" + id +

                ", cityName='" + cityName + '\'' +

                '}';

    }

 

    public Integer getId() {

        return id;

    }

 

    public void setId(Integer id) {

        this.id = id;

    }

 

    public String getCityName() {

        return cityName;

    }

 

    public void setCityName(String cityName) {

        this.cityName = cityName;

    }

 

    public City() {

    }

 

    public City(Integer id, String cityName) {

        this.id = id;

        this.cityName = cityName;

    }

}

 

(2)  service包(service接口)

public interface FlightService {

    public List<City> getAllCity();

}

 

5.provider

(1)  pom.xml

<dependencies>

        <dependency>

                    <groupId>org.springframework.boot</groupId>

                    <artifactId>spring-boot-starter-web</artifactId>

                </dependency>

 

                <dependency>

                    <groupId>org.mybatis.spring.boot</groupId>

                    <artifactId>mybatis-spring-boot-starter</artifactId>

                    <version>2.1.3</version>

                </dependency>

 

                <dependency>

                    <groupId>mysql</groupId>

                    <artifactId>mysql-connector-java</artifactId>

                    <scope>runtime</scope>

                </dependency>

                <dependency>

                    <groupId>org.apache.dubbo</groupId>

                    <artifactId>dubbo-spring-boot-starter</artifactId>

                    <version>2.7.5</version>

                </dependency>

                <!-- https://mvnrepository.com/artifact/com.github.sgroschupf/zkclient -->

                <dependency>

                    <groupId>com.github.sgroschupf</groupId>

                    <artifactId>zkclient</artifactId>

                    <version>0.1</version>

 

                </dependency>

 

                <dependency>

                    <groupId>org.apache.curator</groupId>

                    <artifactId>curator-framework</artifactId>

                    <version>4.2.0</version>

                    <!--<exclusions>

                        <exclusion>

                            <artifactId>zookeeper</artifactId>

                            <groupId>org.apache.zookeeper</groupId>

                        </exclusion>

                    </exclusions>-->

                </dependency>

 

        <!-- https://mvnrepository.com/artifact/com.github.pagehelper/pagehelper-spring-boot-starter -->

        <dependency>

            <groupId>com.github.pagehelper</groupId>

            <artifactId>pagehelper-spring-boot-starter</artifactId>

            <version>1.2.13</version>

        </dependency>

 

 

        <dependency>

                    <groupId>org.apache.zookeeper</groupId>

                    <artifactId>zookeeper</artifactId>

                    <version>3.4.9</version>

                    <exclusions>

                        <exclusion>

                            <artifactId>slf4j-log4j12</artifactId>

                            <groupId>org.slf4j</groupId>

                        </exclusion>

                    </exclusions>

                </dependency>

 

                <dependency>

                    <groupId>org.apache.curator</groupId>

                    <artifactId>curator-recipes</artifactId>

                    <version>4.2.0</version>

                </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>cn.kgc</groupId>

            <artifactId>common</artifactId>

            <version>1.0-SNAPSHOT</version>

            <scope>compile</scope>

        </dependency>

    </dependencies>

 

(2)  yml

spring:

  datasource:

    url: jdbc:mysql:///kgc?serverTimezone=Asia/Shanghai

    username: root

    password: ok

    driver-class-name: com.mysql.jdbc.Driver

  jackson:

    date-format: yyyy-MM-dd HH:mm:ss

    time-zone: GMT+8

mybatis:

  configuration:

    call-setters-on-nulls: true

    log-impl: org.apache.ibatis.logging.stdout.StdOutImpl

  mapper-locations: classpath:mapper/*.xml

dubbo:

  application:

    name: provider[1] 

  registry:

    address: zookeeper://127.0.0.1:2181[2] 

  scan:

    base-packages[3] : cn.kgc.service

  protocol:

    name: dubbo

    port: 21881[4] 

server:

  port: 8083

 

(3)  mapper包

@Mapper

public interface FlightMapper {

    @Select("select * from city")

    public List<City> getAllCity();

}

 

(4)  service包(serviceImpl实现类)

                                                       import org.apache.dubbo.config.annotation.Service;

 

@Service[5] 

@Component

@Transactional

public class FlightServiceImpl implements FlightService {

    @Resource

    private FlightMapper flightMapper;

 

    @Override

    public List<City> getAllCity() {

        return flightMapper.getAllCity();

    }

}

 

(5)resources/mapper包(XML)

<?xml version="1.0" encoding="UTF-8" ?>

<!DOCTYPE mapper

        PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"

        "http://mybatis.org/dtd/mybatis-3-mapper.dtd">

<mapper namespace="cn.kgc.mapper.BookMapper">

    <select id="findAll" resultType="map" >

          select * from book

    </select>

</mapper>

 

6.consumer

(1)  pom.xml

<dependencies>

        <dependency>

            <groupId>org.springframework.boot</groupId>

            <artifactId>spring-boot-starter</artifactId>

        </dependency>

        <dependency>

            <groupId>org.springframework.boot</groupId>

            <artifactId>spring-boot-starter-web</artifactId>

        </dependency>

 

        <dependency>

            <groupId>org.mybatis.spring.boot</groupId>

            <artifactId>mybatis-spring-boot-starter</artifactId>

            <version>2.1.3</version>

        </dependency>

 

        <!-- https://mvnrepository.com/artifact/com.github.pagehelper/pagehelper-spring-boot-starter -->

        <dependency>

            <groupId>com.github.pagehelper</groupId>

            <artifactId>pagehelper-spring-boot-starter</artifactId>

            <version>1.2.13</version>

        </dependency>

 

        <dependency>

            <groupId>org.apache.dubbo</groupId>

            <artifactId>dubbo-spring-boot-starter</artifactId>

            <version>2.7.5</version>

        </dependency>

        <!-- https://mvnrepository.com/artifact/com.github.sgroschupf/zkclient -->

        <dependency>

            <groupId>com.github.sgroschupf</groupId>

            <artifactId>zkclient</artifactId>

            <version>0.1</version>

 

        </dependency>

 

        <dependency>

            <groupId>org.apache.curator</groupId>

            <artifactId>curator-framework</artifactId>

            <version>4.2.0</version>

            <!--<exclusions>

                <exclusion>

                    <artifactId>zookeeper</artifactId>

                    <groupId>org.apache.zookeeper</groupId>

                </exclusion>

            </exclusions>-->

        </dependency>

 

        <dependency>

            <groupId>org.apache.zookeeper</groupId>

            <artifactId>zookeeper</artifactId>

            <version>3.4.9</version>

            <exclusions>

                <exclusion>

                    <artifactId>slf4j-log4j12</artifactId>

                    <groupId>org.slf4j</groupId>

                </exclusion>

            </exclusions>

        </dependency>

        <dependency>

            <groupId>org.springframework.kafka</groupId>

            <artifactId>spring-kafka</artifactId>

        </dependency>

 

        <dependency>

            <groupId>org.apache.curator</groupId>

            <artifactId>curator-recipes</artifactId>

            <version>4.2.0</version>

        </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>cn.kgc</groupId>

            <artifactId>common</artifactId>

            <version>1.0-SNAPSHOT</version>

            <scope>compile</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>

    </dependencies>

 

(2)  yml

dubbo:

  application:

    name: consumer

  registry:

    address: zookeeper://127.0.0.1:2181

mybatis:

  configuration:

    call-setters-on-nulls: true

    log-impl: org.apache.ibatis.logging.stdout.StdOutImpl

server:

  port: 8081

 

(3)  controller包

@RestController

public class FlightController {

    @Reference

    private FlightService service;

    @RequestMapping("/getAllCity")

    public List<City> getAllCity(){

        return service.getAllCity();

    }

}

 

(4)  static包

引入js包，引入jquery类库

findAll.html

·

 

 

(5)  启动类

@SpringBootApplication(exclude = DataSourceAutoConfiguration.class)

---

注册到zk中的名称

zk的地址

扫描哪些包中的哪些业务暴露出去(dubbo的@Service注解对应包的位置)

提供者暴露服务的端口号

import org.apache.dubbo.config.annotation.Service;