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详解基于MybatisPlus两步实现多租户方案

作者:一个抓手

这篇文章主要介绍了详解基于MybatisPlus两步实现多租户方案,本文分两步,通过实例代码给大家介绍的非常详细,对大家的学习或工作具有一定的参考借鉴价值,需要的朋友可以参考下

1.定义一个TenantLineHandler的实现类:

import com.baomidou.mybatisplus.extension.plugins.handler.TenantLineHandler;
import com.google.common.collect.Lists;
import net.sf.jsqlparser.expression.Expression;
import net.sf.jsqlparser.expression.LongValue;
 
import java.util.List;
 
/**
 * 多租户处理插件
 *
 * @author 向振华
 * @date 2021/04/26 13:37
 */
public class CustomTenantLineHandler implements TenantLineHandler {
 
    /**
     * 忽略添加租户ID的表
     */
    private final static List<String> IGNORE_TABLE_NAMES = Lists.newArrayList(
            "t_country",
            "t_language"
    );
 
    /**
     * 获取租户ID值表达式(可从cookie、token、缓存中取)
     *
     * @return
     */
    @Override
    public Expression getTenantId() {
        return new LongValue(1L);
    }
 
    /**
     * 获取租户字段名(数据库的租户ID字段名)
     *
     * @return
     */
    @Override
    public String getTenantIdColumn() {
        return "tenant_id";
    }
 
    /**
     * 根据表名判断是否忽略拼接多租户条件
     *
     * @param tableName
     * @return
     */
    @Override
    public boolean ignoreTable(String tableName) {
        return IGNORE_TABLE_NAMES.contains(tableName);
    }
}

2.定义MybatisPlusConfig配置类将多租户插件生效:

import com.baomidou.mybatisplus.annotation.DbType;
import com.baomidou.mybatisplus.autoconfigure.ConfigurationCustomizer;
import com.baomidou.mybatisplus.extension.plugins.MybatisPlusInterceptor;
import com.baomidou.mybatisplus.extension.plugins.inner.PaginationInnerInterceptor;
import com.baomidou.mybatisplus.extension.plugins.inner.TenantLineInnerInterceptor;
import com.bzcst.bop.component.mybatis.config.handler.AutoFillMetaObjectHandler;
import com.bzcst.bop.component.mybatis.config.handler.CustomTenantLineHandler;
import org.mybatis.spring.annotation.MapperScan;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
 
/**
 * @author 向振华
 * @date 2021/04/26 14:45
 */
@Configuration
@MapperScan("scan.your.mapper.package")
public class MybatisPlusConfig {
 
    @Bean
    public MybatisPlusInterceptor mybatisPlusInterceptor() {
        MybatisPlusInterceptor interceptor = new MybatisPlusInterceptor();
        // 多租户插件(注意:这个一定要放在最上面)
        interceptor.addInnerInterceptor(new TenantLineInnerInterceptor(new CustomTenantLineHandler()));
        // 分页插件
        interceptor.addInnerInterceptor(new PaginationInnerInterceptor(DbType.MYSQL));
        return interceptor;
    }
 
    @Bean
    public ConfigurationCustomizer configurationCustomizer() {
        return configuration -> configuration.setUseDeprecatedExecutor(false);
    }
 
    @Bean
    public AutoFillMetaObjectHandler fillMetaObjectHandler() {
        return new AutoFillMetaObjectHandler();
    }
}

测试

@Test
    public void select() {
        Role role = roleService.getById(40L);
        System.out.println(role);
    }
Creating a new SqlSession
SqlSession [org.apache.ibatis.session.defaults.DefaultSqlSession@2fedfff1] was not registered for synchronization because synchronization is not active
Original SQL: SELECT id,tenant_id,frame_id,name,type,description,meta_created,meta_updated,meta_logic_flag FROM t_sec_role WHERE id=? 
parser sql: SELECT id, tenant_id, frame_id, name, type, description, meta_created, meta_updated, meta_logic_flag FROM t_sec_role WHERE id = ? AND tenant_id = 1
2021-04-26 14:58:55.534  INFO 24980 --- [           main] com.zaxxer.hikari.HikariDataSource       : DatebookHikariCP - Starting...
2021-04-26 14:58:55.903  INFO 24980 --- [           main] com.zaxxer.hikari.HikariDataSource       : DatebookHikariCP - Start completed.
JDBC Connection [HikariProxyConnection@1100660981 wrapping com.mysql.cj.jdbc.ConnectionImpl@628fa8ea] will not be managed by Spring
==>  Preparing: SELECT id, tenant_id, frame_id, name, type, description, meta_created, meta_updated, meta_logic_flag FROM t_sec_role WHERE id = ? AND tenant_id = 1
==> Parameters: 40(Long)
<==    Columns: id, tenant_id, frame_id, name, type, description, meta_created, meta_updated, meta_logic_flag
<==        Row: 40, 1, 123, 一个角色啊, 2, haha, 2021-04-26 14:07:42, 2021-04-26 14:07:42, 1
<==      Total: 1
Closing non transactional SqlSession [org.apache.ibatis.session.defaults.DefaultSqlSession@2fedfff1]
Role(id=40, sasTenantId=1, orgFrameId=123, name=一个角色啊, type=2, description=haha, metaCreated=Mon Apr 26 14:07:42 CST 2021, metaUpdated=Mon Apr 26 14:07:42 CST 2021, metaLogicFlag=1)

可以看到查询语句后面拼接了tenant_id = 1

==>  Preparing: SELECT id, tenant_id, frame_id, name, type, description, meta_created, meta_updated, meta_logic_flag FROM t_sec_role WHERE id = ? AND tenant_id = 1

注意:如果表中没有定义tenant_id会报错,不需要添加多租户的表配置到CustomTenantLineHandler 中的IGNORE_TABLE_NAMES集合中

到此这篇关于详解基于MybatisPlus两步实现多租户方案的文章就介绍到这了,更多相关MybatisPlus多租户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!

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