SpringBoot+MybatisPlus實現(xiàn)sharding-jdbc分庫分表的示例代碼

更新時間：2024年03月25日 16:49:05 作者：黑辰King

本文主要介紹了SpringBoot+MybatisPlus實現(xiàn)sharding-jdbc分庫分表的示例代碼,以分庫,分表,分庫分表三種方式來實現(xiàn),具有一定的參考價值,感興趣的可以了解一下

介紹

學習sharding-jdbc的分庫分表功能，以分庫，分表，分庫分表三種方式來實現(xiàn),此文章只展示分庫分表，為簡潔其余兩種分篇寫

1.環(huán)境搭建

代碼結構

在這里插入圖片描述

數(shù)據庫搭建(2個mysql數(shù)據庫),并在2個庫下都添加多個相同結構的表

在這里插入圖片描述

pom.xml依賴

 <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 (配置文件分離，結構更清晰)

spring:
  main:
    allow-bean-definition-overriding: true # 需要配置否則加載數(shù)據源報錯 是否允許定義重名的bean對象覆蓋原有的bean
  profiles:
    active: databasetable

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

application-databasetable.yml

# 數(shù)據源命名
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



#庫名.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}

# 數(shù)據庫分片字段
spring.shardingsphere.sharding.tables.book.database-strategy.standard.sharding-column=create_time
# 數(shù)據庫分片策略
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

# 數(shù)據表分片字段
spring.shardingsphere.sharding.tables.book.table-strategy.standard.sharding-column=create_time
# 數(shù)據表分表策略
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.代碼編寫

同分庫,分表兩篇文中的一致,這里不粘貼了,項目地址本測試Demo的Gitee地址

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