实验环境

SpringBoot 版本：2.2.2.RELEASE

Shardingsphere 版本：4.0.0-RC3

实验说明

数据库：demo_ds_0，demo_ds_1

表结构：在 demo_ds_0 和 demo_ds_1 中分别创建 user 表，字段包括 id（主键），name、uid、school 和 age

CREATE TABLE `user` (
    `id` bigint(255) NOT NULL AUTO_INCREMENT,
    `name` varchar(255) DEFAULT NULL,
    `uid` varchar(255) DEFAULT NULL,
    `school` varchar(255) DEFAULT NULL,
    `age` int(11) DEFAULT NULL,
    PRIMARY KEY (`id`)
)

实验步骤

第一步：引入 Shardingsphere 依赖

在项目依赖中添加以下坐标：


   
    
    
     org.apache.shardingsphere
    
    
    
     sharding-jdbc-spring-boot-starter
    
    
    
     4.0.0-RC3
    
   
   
   
    
    
     org.apache.shardingsphere
    
    
    
     sharding-jdbc-spring-namespace
    
    
    
     4.0.0-RC3

第二步：配置 application.properties 文件

# 其他配置（如服务器绑定、上下文路径等）...
# 数据源配置
spring.shardingsphere.datasource.names=ds-0,ds-1
spring.shardingsphere.datasource.ds-0.type=com.zaxxer.hikari.HikariDataSource
spring.shardingsphere.datasource.ds-0.driver-class-name=com.mysql.jdbc.Driver
spring.shardingsphere.datasource.ds-0.jdbc-url=jdbc:mysql://youraddress:3306/demo_ds_0
spring.shardingsphere.datasource.ds-0.username=spring
spring.shardingsphere.datasource.ds-0.password=spring
spring.shardingsphere.datasource.ds-1.type=com.zaxxer.hikari.HikariDataSource
spring.shardingsphere.datasource.ds-1.driver-class-name=com.mysql.jdbc.Driver
spring.shardingsphere.datasource.ds-1.jdbc-url=jdbc:mysql://youraddress:3306/demo_ds_1
spring.shardingsphere.datasource.ds-1.username=spring
spring.shardingsphere.datasource.ds-1.password=spring
# 分片配置
spring.shardingsphere.sharding.default-database-strategy.inline.sharding-column=age
spring.shardingsphere.sharding.default-database-strategy.inline.algorithm-expression=ds-$-&{age % 2}
# 表配置
spring.shardingsphere.sharding.tables.user.actual-data-nodes=ds-$-{0..1}.users
spring.shardingsphere.sharding.tables.user.key-generator.column=id
spring.shardingsphere.sharding.tables.user.key-generator.type=SNOWFLAKE
spring.shardingsphere.sharding.tables.user.key-generator.props.worker.id=123