首页 > 软件编程 > java > SpringBoot MybatisPlus sharding-jdbc分库分表

SpringBoot+MybatisPlus实现sharding-jdbc分库分表的示例代码

2024-03-25 16:49:05 作者：黑辰King

本文主要介绍了SpringBoot+MybatisPlus实现sharding-jdbc分库分表的示例代码,以分库,分表,分库分表三种方式来实现,具有一定的参考价值,感兴趣的可以了解一下

介绍

学习sharding-jdbc的分库分表功能，以分库，分表，分库分表三种方式来实现,此文章只展示分库分表，为简洁其余两种分篇写

1.环境搭建

代码结构

在这里插入图片描述

数据库搭建(2个mysql数据库),并在2个库下都添加多个相同结构的表

在这里插入图片描述

pom.xml依赖

 <dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter</artifactId>
        </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>
        <dependency>
            <groupId>com.alibaba</groupId>
            <artifactId>druid-spring-boot-starter</artifactId>
            <version>1.1.20</version>
        </dependency>
        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
            <version>5.1.47</version>
        </dependency>
        <dependency>
            <groupId>org.apache.shardingsphere</groupId>
            <artifactId>sharding-jdbc-spring-boot-starter</artifactId>
            <version>4.0.0-RC1</version>
        </dependency>
        <dependency>
            <groupId>com.baomidou</groupId>
            <artifactId>mybatis-plus-boot-starter</artifactId>
            <version>3.0.5</version>
        </dependency>
    </dependencies>

application.yml (配置文件分离，结构更清晰)

spring:
  main:
    allow-bean-definition-overriding: true # 需要配置否则加载数据源报错 是否允许定义重名的bean对象覆盖原有的bean
  profiles:
    active: databasetable

mybatis-plus:
  mapperLocations: classpath*:mapper/*Mapper.xml

application-databasetable.yml

# 数据源命名
spring.shardingsphere.datasource.names=book2021,book2022

# datasource1
spring.shardingsphere.datasource.book2021.type=com.alibaba.druid.pool.DruidDataSource
spring.shardingsphere.datasource.book2021.driver-class-name=com.mysql.jdbc.Driver
spring.shardingsphere.datasource.book2021.url=jdbc:mysql://192.168.31.212:3306/book2021?useUnicode=true&characterEncoding=utf8&zeroDateTimeBehavior=convertToNull&useSSL=false&serverTimezone=GMT%2B8&allowMultiQueries=true
spring.shardingsphere.datasource.book2021.username=root
spring.shardingsphere.datasource.book2021.password=123

# datasource2
spring.shardingsphere.datasource.book2022.type=com.alibaba.druid.pool.DruidDataSource
spring.shardingsphere.datasource.book2022.driver-class-name=com.mysql.jdbc.Driver
spring.shardingsphere.datasource.book2022.url=jdbc:mysql://192.168.31.212:3307/book2022?useUnicode=true&characterEncoding=utf8&zeroDateTimeBehavior=convertToNull&useSSL=false&serverTimezone=GMT%2B8&allowMultiQueries=true
spring.shardingsphere.datasource.book2022.username=root
spring.shardingsphere.datasource.book2022.password=123



#库名.表名
spring.shardingsphere.sharding.tables.book.actual-data-nodes=book202${1..2}.book_info_202${1..2}0${1..9},book202${1..2}.book_info_202${1..2}1${0..2}

# 数据库分片字段
spring.shardingsphere.sharding.tables.book.database-strategy.standard.sharding-column=create_time
# 数据库分片策略
spring.shardingsphere.sharding.tables.book.database-strategy.standard.preciseAlgorithmClassName=cn.xwl.xshardingjdbc.config.database.PreciseDatabaseShardingAlgorithm
spring.shardingsphere.sharding.tables.book.database-strategy.standard.rangeAlgorithmClassName=cn.xwl.xshardingjdbc.config.database.RangeDatabaseShardingAlgorithm

# 数据表分片字段
spring.shardingsphere.sharding.tables.book.table-strategy.standard.sharding-column=create_time
# 数据表分表策略
spring.shardingsphere.sharding.tables.book.table-strategy.standard.preciseAlgorithmClassName=cn.xwl.xshardingjdbc.config.table.PreciseTableShardingAlgorithm
spring.shardingsphere.sharding.tables.book.table-strategy.standard.rangeAlgorithmClassName=cn.xwl.xshardingjdbc.config.table.RangeTableShardingAlgorithm

# 打印sql
spring.shardingsphere.props.sql.show=true

2.代码编写

同分库,分表两篇文中的一致,这里不粘贴了,项目地址本测试Demo的Gitee地址

到此这篇关于SpringBoot+MybatisPlus实现sharding-jdbc分库分表的示例代码的文章就介绍到这了,更多相关SpringBoot MybatisPlus sharding-jdbc分库分表内容请搜索脚本之家以前的文章或继续浏览下面的相关文章希望大家以后多多支持脚本之家！