Spring Boot集成Shardingsphere,Mybatis Plus
为了在Spring Boot项目中集成ShardingSphere和MyBatis Plus,你需要按照以下步骤操作:
- 在
pom.xml
中添加ShardingSphere和MyBatis Plus的依赖:
<!-- ShardingSphere 依赖 -->
<dependency>
<groupId>org.apache.shardingsphere</groupId>
<artifactId>shardingsphere-jdbc-core-spring-boot-starter</artifactId>
<version>你的ShardingSphere版本</version>
</dependency>
<!-- MyBatis Plus 依赖 -->
<dependency>
<groupId>com.baomidou</groupId>
<artifactId>mybatis-plus-boot-starter</artifactId>
<version>你的MyBatis Plus版本</version>
</dependency>
- 在
application.yml
或application.properties
中配置ShardingSphere和MyBatis Plus的相关配置:
spring:
shardingsphere:
datasource:
names: ds0,ds1
ds0:
type: com.zaxxer.hikari.HikariDataSource
driver-class-name: com.mysql.cj.jdbc.Driver
jdbc-url: jdbc:mysql://localhost:3306/ds0
username: root
password:
ds1:
... # 配置其他数据源
sharding:
tables:
your_table:
actual-data-nodes: ds$->{0..1}.your_table_$->{0..1}
table-strategy:
inline:
sharding-column: your_sharding_key
algorithm-expression: your_table_$->{your_sharding_key % 2}
props:
sql:
show: true
mybatis-plus:
mapper-locations: classpath:/mapper/*.xml # 指定MyBatis Plus的Mapper XML文件位置
type-aliases-package: com.yourpackage.model # 指定实体类所在包路径
global-config:
db-config:
id-type: auto # 主键生成策略
- 创建相应的实体类、Mapper接口和Mapper XML文件。
实体类示例:
public class YourEntity {
private Long id;
private String someField;
// 省略其他字段和getter/setter方法
}
Mapper接口示例:
@Mapper
public interface YourEntityMapper extends BaseMapper<YourEntity> {
// 这里可以添加自定义的数据库操作方法
}
Mapper XML示例:
<!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN" "http://mybatis.org/dtd/mybatis-3-mapper.dtd">
<mapper namespace="com.yourpackage.mapper.YourEntityMapper">
<!-- 这里可以添加自定义SQL语句 -->
</mapper>
- 在Spring Boot启动类上添加
@MapperScan
注解来扫描Mapper接口:
@SpringBootApplication
@MapperScan("com.yourpackage.mapper")
public class YourApplication {
public static void main(String[] args) {
SpringApplication.run(YourApplication.class, args);
}
}
通过以上步骤,你就可以在Spring Boot项目中集成ShardingSphere和MyBatis Plus了。记得替换示例代码中的your_table
, \`your\_sharding
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