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è¿æ¯ä¸ä¸ªåºäºSpringBootæ´åSharding-JDBCå®ç°è¯»åå离çæç®æç¨ï¼ç¬è 使ç¨å°çææ¯åçæ¬å¦ä¸ï¼
SpringBoot 2.5.2
MyBatis-Plus 3.4.3
Sharding-JDBC 4.1.1
MySQL8é群ï¼çç¬è åä¸ç¯æç« æé¨ç½²æç¨ï¼
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ä¸.pomæ件
<?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>2.5.2</version>
<relativePath/> <!-- lookup parent from repository -->
</parent>
<groupId>xyz.hcworld</groupId>
<artifactId>sharding-jdbc-demo</artifactId>
<version>0.0.1-SNAPSHOT</version>
<name>sharding-jdbc-demo</name>
<description>å¤æ°æ®æºåæ¢å®ä¾</description>
<properties>
<java.version>1.8</java.version>
</properties>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<!-- mybatis-plusä¾èµ -->
<dependency>
<groupId>com.baomidou</groupId>
<artifactId>mybatis-plus-boot-starter</artifactId>
<version>3.4.3</version>
</dependency>
<!-- mysqlé©±å¨ -->
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<scope>runtime</scope>
</dependency>
<!-- sharding-jdbcï¼å¤æ°æ®æºåæ¢ï¼ -->
<dependency>
<groupId>org.apache.shardingsphere</groupId>
<artifactId>sharding-jdbc-spring-boot-starter</artifactId>
<version>4.1.1</version>
</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>
</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>
å.é ç½®æ件ï¼åºäºYAMLï¼åSQL建表è¯å¥
spring:
main:
allow-bean-definition-overriding: true
#æ¾ç¤ºsql
shardingsphere:
props:
sql:
show: true
masterslave:
#é
置主ä»å称
name: ms
#置主åºmaster,è´è´£æ°æ®çåå
¥
master-data-source-name: ds1
#é
ç½®ä»åºslaveèç¹
slave-data-source-names: ds2,ds3
#é
ç½®slaveèç¹çè´è½½åè¡¡åè¡¡çç¥,éç¨è½®è¯¢æºå¶ï¼æ两ç§ç®æ³ï¼round_robin(轮询)årandom(éæº)
load-balance-algorithm-type: round_robin
sharding:
#é
ç½®é»è®¤æ°æ®æºds1 é»è®¤æ°æ®æº,主è¦ç¨äºå
default-data-source-name: ds1
# é
ç½®æ°æ®æº
datasource:
names: ds1,ds2,ds3
#master-ds1æ°æ®åºè¿æ¥ä¿¡æ¯
ds1:
type: com.zaxxer.hikari.HikariDataSource
driver-class-name: com.mysql.cj.jdbc.Driver
jdbc-url: jdbc:mysql://192.168.2.142:3307/sharding-jdbc-db?useUnicode=true&useSSL=false&serverTimezone=Asia/Shanghai
username: root
password: 123456
maxPoolSize: 100
minPoolSize: 5
#slave-ds2æ°æ®åºè¿æ¥ä¿¡æ¯
ds2:
type: com.zaxxer.hikari.HikariDataSource
driver-class-name: com.mysql.cj.jdbc.Driver
jdbc-url: jdbc:mysql://192.168.2.142:3308/sharding-jdbc-db?useUnicode=true&useSSL=false&serverTimezone=Asia/Shanghai
username: root
password: 123456
maxPoolSize: 100
minPoolSize: 5
#slave-ds3æ°æ®åºè¿æ¥ä¿¡æ¯
ds3:
type: com.zaxxer.hikari.HikariDataSource
driver-class-name: com.mysql.cj.jdbc.Driver
jdbc-url: jdbc:mysql://192.168.2.142:3309/sharding-jdbc-db?useUnicode=true&useSSL=false&serverTimezone=Asia/Shanghai
username: root
password: 123456
maxPoolSize: 100
minPoolSize: 5
#mybatis-plusé
ç½®
mybatis-plus:
type-aliases-package: xyz.hcworld.demo.model
mapper-locations: classpath*:/mapper/**Mapper.xml
CREATE TABLE `t_user` (
`id` int(11) NOT NULL AUTO_INCREMENT,
`nickname` varchar(100) DEFAULT NULL,
`password` varchar(100) DEFAULT NULL,
`sex` int(11) DEFAULT NULL,
`birthday` varchar(50) DEFAULT NULL,
PRIMARY KEY (`id`)
) ENGINE=InnoDB AUTO_INCREMENT=1 DEFAULT CHARSET=utf8mb4;
äº.Mapper.xmlæ件åMapperæ¥å£
<?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="xyz.hcworld.demo.mapper.UserMapper">
<update id="addUser">
INSERT INTO t_user(nickname,PASSWORD,sex,birthday) VALUES(#{nickname},#{password},#{sex},#{birthday})
</update>
<select id="findUsers" resultType="xyz.hcworld.demo.model.User">
SELECT
id,
nickname,
PASSWORD,
sex,
birthday
FROM t_user;
</select>
</mapper>
package xyz.hcworld.demo.mapper;
import com.baomidou.mybatisplus.core.mapper.BaseMapper;
import org.springframework.stereotype.Component;
import xyz.hcworld.demo.model.User;
import java.util.List;
/**
* @ClassName: UserMapper
* @Author: å¼ çº¢å°
* @Date: 2021-07-20
* @Versionï¼ 1.0
*/
@Component
public interface UserMapper extends BaseMapper<User> {
void addUser(User user);
List<User> findUsers();
}
å .ControlleråMocelæ件
package xyz.hcworld.demo.controller;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
import xyz.hcworld.demo.mapper.UserMapper;
import xyz.hcworld.demo.model.User;
import java.security.SecureRandom;
import java.util.List;
/**
* @ClassName: UserController
* @Author: å¼ çº¢å°
* @Date: 2021-07-20
* @Versionï¼ 1.0
*/
@RestController
@RequestMapping("/api/user")
public class UserController {
@Autowired
private UserMapper userMapper;
@PostMapping("/save")
public String addUser() {
User user = new User();
user.setNickname("zhangsan" + new SecureRandom().nextInt());
user.setPassword("123456");
user.setSex(1);
user.setBirthday("1997-12-03");
userMapper.addUser(user);
return user.toString();
}
@GetMapping("/findUsers")
public List<User> findUsers() {
return userMapper.findUsers();
}
}
package xyz.hcworld.demo.model;
import com.baomidou.mybatisplus.annotation.IdType;
import com.baomidou.mybatisplus.annotation.TableId;
import com.baomidou.mybatisplus.annotation.TableName;
import lombok.Data;
import lombok.EqualsAndHashCode;
/**
* @ClassName: User
* @Author: å¼ çº¢å°
* @Date: 2021-07-20
* @Versionï¼ 1.0
*/
@Data
@TableName("t_user")
public class User {
private static final long serialVersionUID = 1L;
@TableId(value = "id", type = IdType.AUTO)
private Integer id;
private String nickname;
private String password;
private Integer sex;
private String birthday;
}
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å «.Sharding-JDBCä¸åçæ¬ä¸çé ç½®
ç½ä¸Sharding-JDBCçæç¨å¤ä¸º4.0.0.RC1çæ¬ï¼ç¬è 使ç¨çæ¯ææ°ç4.1.1æ以
å¨è¯¥é¨åæ°æ®åºå°åå¨4.1.1为jdbc-urlå¨4.0.0.RC1ä¸éè¦æ¹ä¸ºurlå¦åä¼å¯å¨å¤±è´¥
jdbc-url: jdbc:mysql://XXXX/XXXX
ä¸ç½ä¸æç¨å¤ä¸ºpropertiesæ件ï¼ç¬è å°å ¶è½¬å为YAMLæ件æ´å è½ç´è§æå
项ç®ä¸è½½
GitHub:https://github.com/z875479694h/sharding-jdbc-demo
èç³»æ¹å¼
å ¬ä¼å·ï¼éå±±æå½
Githubï¼https://github.com/z875479694h
å客ï¼https://www.hcworld.xyz