springboot+dubbo+zookeeper搭建微服务框架基础

org.apache.maven.plugins

maven-compiler-plugin

${java.version}

${java.version}

UTF-8

org.apache.maven.plugins

maven-resources-plugin

UTF-8

parent父工程到这里就可以不动他了，如果你的子模块有变动再更新

三、创建common模块

---

对parent项目创建cmmon子模块，common模块一般用于存放公共的实体类、工具类等公用信息。

此处用于仅用于测试所以只创建一个user对象以及userservice

最终结构如下图（此处有个不影响使用的问题，应该时domain，结果拼成了domin了，当然也可自行更改为entity之类的 看个人习惯）

User.java（需要实现Serializable 接口）

package com.demo.common.domin;

import java.io.Serializable;

/**

• @ClassName: User

• @Package: com.demo.common.domin

• @Description:

• @Datetime: 2020/7/10 17:04

• @author: kaishun.zhou

*/

public class User implements Serializable {

private String id;

private String username;

private String password;

private Integer age;

public String getId() {

return id;

}

public void setId(String 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;

}

}

UserService.java

package com.demo.common.service;

import com.demo.common.domin.User;

import java.util.List;

/**

• @ClassName: UserService

• @Package: com.demo.common.service

• @Description:

• @Datetime: 2020/7/10 17:05

• @author: kaishun.zhou

*/

public interface UserService {

List findAll();

}

common模块到此结束。pom以及application默认即可，此案例中可以不使用。

四、创建provider模块

---

创建provider模块去具体实现common下的服务。实际开发中会有多个provider模块以及多种服务以及实现。

首先修改pom文件

xsi:schemaLocation=“http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd”>

4.0.0

org.springframework.boot

spring-boot-starter-parent

2.3.1.RELEASE

com.demo

provider

0.0.1-SNAPSHOT

provider

jar

Demo project for Spring Boot

UTF-8

UTF-8

1.8

0.10

com.demo

common

0.0.1-SNAPSHOT

org.springframework.boot

spring-boot-starter

org.springframework.boot

spring-boot-starter-test

test

com.alibaba

dubbo

2.5.5

log4j

log4j

com.101tec

zkclient

${zkclient.version}

org.mybatis.spring.boot

mybatis-spring-boot-starter

1.3.1

org.springframework.boot

spring-boot-starter-jdbc

mysql

mysql-connector-java

5.1.35

com.alibaba

druid

1.0.11

org.springframework.boot

spring-boot-starter-tomcat

provided

org.springframework.boot

spring-boot-maven-plugin

创建service的实现impl、创建mapper、修改application.yml、创建spring-dubbo.xml

结构如图(application.properties为默认带的，可删除，也可直接修改后缀为yml)

UserMapper.java

package com.demo.provider.mapper;

import com.demo.common.domin.User;

import org.apache.ibatis.annotations.Mapper;

import org.apache.ibatis.annotations.Result;

import org.apache.ibatis.annotations.Results;

import org.apache.ibatis.annotations.Select;

import java.util.List;

/**

• @ClassName: UserMapper

• @Package: com.demo.provider.mapper

• @Description:

• @Datetime: 2020/7/10 17:10

• @author: kaishun.zhou

*/

@Mapper

public interface UserMapper {

@Results(id = “userMap”, value = {

@Result(column = “id”, property = “id”),

@Result(column = “username”, property = “username”),

@Result(column = “age”, property = “age”),

@Result(column = “password”, property = “password”)})

@Select(“SELECT * FROM user”)

List getAll();

}

添加mapper后对应的启动类需要添加扫描后面会贴代码

UserServiceImpl.java

package com.demo.provider.service.impl;

import com.alibaba.dubbo.config.annotation.Service;

import com.demo.common.domin.User;

import com.demo.common.service.UserService;

import com.demo.provider.mapper.UserMapper;

import javax.annotation.Resource;

import java.util.List;

/**

• @ClassName: UserImpl

• @Package: com.demo.provider.service.impl

• @Description:

• @Datetime: 2020/7/10 17:09

• @author: kaishun.zhou

*/

@Service(version = “1.0.0”)

public class UserImpl implements UserService {

@Resource

private UserMapper userMapper;

@Override

public List findAll() {

System.out.println(“进入提供者实现体”);

List list = userMapper.getAll();

System.out.println(“用户数量：”+list.size());

return list;

}

}

注意：

此处的@Service为com.alibaba.dubbo.config.annotation.Service;

而不是org.springframework.stereotype.Service

此处的demo测试中版本号可加可不加

application.yml

server:

port: 8082

spring:

datasource:

name: dubbo_demo

url: jdbc:mysql://127.0.0.1:3306/dubbo_demo

username: root

password: 123456

使用druid数据源

type: com.alibaba.druid.pool.DruidDataSource

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

mybatis:

type-aliases-package: domain

此处provider模块为8082端口，后面customer模块为8081端口

创建spring-dubbo.xml

xmlns:xsi=“http://www.w3.org/2001/XMLSchema-instance”

xmlns:dubbo=“http://code.alibabatech.com/schema/dubbo”

xsi:schemaLocation="http://www.springframework.org/schema/beans

http://www.springframework.org/schema/beans/spring-beans.xsd

http://code.alibabatech.com/schema/dubbo

http://code.alibabatech.com/schema/dubbo/dubbo.xsd">

此文件中配置参数路径根据自己配置路径修改。

修改启动类ProviderApplication.java

package com.demo.provider;

import org.mybatis.spring.annotation.MapperScan;

import org.springframework.boot.SpringApplication;

import org.springframework.boot.autoconfigure.SpringBootApplication;

import org.springframework.context.annotation.ImportResource;

@SpringBootApplication

@ImportResource({“classpath:spring-dubbo.xml”})

@MapperScan(“mapper”)

public class ProviderApplication {

public static void main(String[] args) {

SpringApplication.run(ProviderApplication.class, args);

System.out.println(“服务端启动成功！！！”);

}

}

provider模块至此结束

五、创建customer模块

---

创建customer模块去调用provider模块下服务。

修改pom文件

xsi:schemaLocation=“http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd”>

4.0.0

org.springframework.boot

spring-boot-starter-parent

2.3.1.RELEASE

com.demo

customer

0.0.1-SNAPSHOT

customer

jar

Demo project for Spring Boot

UTF-8

UTF-8

1.8

0.10

com.demo

common

0.0.1-SNAPSHOT

org.springframework.boot

spring-boot-starter

org.springframework.boot

spring-boot-starter-web

org.springframework.boot

spring-boot-starter-test

test

com.alibaba

dubbo

2.5.5

log4j

log4j

com.101tec

zkclient

${zkclient.version}

org.springframework.boot

spring-boot-maven-plugin

创建UserController，创建application.yml或者直接修改application.properties文件，此处用于测试选择的直接修改application.properties，至于为何不新建ym原因在下面、创建spring-dubbo.xml

最终结构如下图：

UserController.java

package com.demo.customer.controller;

import com.alibaba.dubbo.config.annotation.Reference;

import com.demo.common.domin.User;

import com.demo.common.service.UserService;

import org.springframework.web.bind.annotation.GetMapping;

import org.springframework.web.bind.annotation.RestController;

import javax.annotation.Resource;

import java.util.List;

/**

• @ClassName: UserController

• @Package: com.demo.customer.controller

• @Description:

• @Datetime: 2020/7/10 17:15

• @author: kaishun.zhou

*/

@RestController

public class UserController {

@Resource

@Reference(version = “1.0.0”)

private UserService userService;

@GetMapping(“getUser”)

public List user(){

System.out.println(“进入消费者方法”);

return userService.findAll();

}

}

application.properties（这就是为啥不新建yml的原因）

server.port=8081

spring-dubbo.xml

xmlns:xsi=“http://www.w3.org/2001/XMLSchema-instance”

xmlns:dubbo=“http://code.alibabatech.com/schema/dubbo”

xsi:schemaLocation="http://www.springframework.org/schema/beans

http://www.springframework.org/schema/beans/spring-beans.xsd

http://code.alibabatech.com/schema/dubbo

http://code.alibabatech.com/schema/dubbo/dubbo.xsd">

同理，配置参数根据自己的路径进行修改

修改启动类CustomerApplication.java

package com.demo.customer;

import org.springframework.boot.SpringApplication;

import org.springframework.boot.autoconfigure.SpringBootApplication;

import org.springframework.context.annotation.ImportResource;

@SpringBootApplication

@ImportResource({“classpath:spring-dubbo.xml”})

public class CustomerApplication {

public static void main(String[] args) {

SpringApplication.run(CustomerApplication.class, args);

System.out.println(“消费端启动成功！！！”);

}

}

customer模块结束

创建数据库dubbo-demo,并创建user表，字段与上述domain一致即可

CREATE TABLE user (

id varchar(32) NOT NULL,

username varchar(100) DEFAULT NULL,

password varchar(100) DEFAULT NULL,

age int(3) DEFAULT NULL,

PRIMARY KEY (id)

) ENGINE=InnoDB DEFAULT CHARSET=utf8;

添加模拟数据

INSERT INTO dubbo_demo.user (id, username, password, age) VALUES (‘1’, ‘tom’, ‘123456’, ‘22’);

至此即可启动项目测试。

首先确保zookeeper，根据上述博客安装完毕后进入bin目录下，打开zkServer.cmd和zkCli.cmd