51工具盒子却是平流无石处，时时闻说有沉沦。------唐•杜荀鹤
配置
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| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 | hljs java @Bean public MybatisPlusInterceptor mybatisPlusInterceptor() { MybatisPlusInterceptor interceptor = new MybatisPlusInterceptor(); DynamicTableNameInnerInterceptor dynamicTableNameInnerInterceptor = new DynamicTableNameInnerInterceptor(); HashMap<String, TableNameHandler> map = new HashMap<String, TableNameHandler>(2) {{ put("user", (sql, tableName) -> { String year = "_2018"; int random = new Random().nextInt(10); if (random % 2 == 1) { year = "_2019"; } return tableName + year; }); }}; dynamicTableNameInnerInterceptor.setTableNameHandlerMap(map); interceptor.addInnerInterceptor(dynamicTableNameInnerInterceptor); return interceptor; } |
完整配置类
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| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 | hljs java package com.ruben.simpleideaspringboot.config; import com.baomidou.mybatisplus.annotation.DbType; import com.baomidou.mybatisplus.extension.plugins.MybatisPlusInterceptor; import com.baomidou.mybatisplus.extension.plugins.handler.TableNameHandler; import com.baomidou.mybatisplus.extension.plugins.inner.BlockAttackInnerInterceptor; import com.baomidou.mybatisplus.extension.plugins.inner.DynamicTableNameInnerInterceptor; import com.baomidou.mybatisplus.extension.plugins.inner.PaginationInnerInterceptor; import org.springframework.context.annotation.Bean; import org.springframework.context.annotation.Configuration; import java.security.SecureRandom; import java.util.HashMap; /** * mybatis-plus配置类 * * @author <achao1441470436@gmail.com> * @since 2021/5/20 0020 9:29 */ @Configuration public class MybatisPlusConfig { /** * 分页拦截器 * * @author <achao1441470436@gmail.com> * @since 2021/5/20 0020 9:29 */ @Bean public MybatisPlusInterceptor mybatisPlusInterceptor() { MybatisPlusInterceptor interceptor = new MybatisPlusInterceptor(); PaginationInnerInterceptor paginationInnerInterceptor = new PaginationInnerInterceptor(DbType.MYSQL); // 阻止全表更新与删除 BlockAttackInnerInterceptor blockAttackInnerInterceptor = new BlockAttackInnerInterceptor(); // 设置请求的页面大于最大页后操作， true调回到首页，false 继续请求 默认false paginationInnerInterceptor.setOverflow(true); paginationInnerInterceptor.setMaxLimit(200L); DynamicTableNameInnerInterceptor dynamicTableNameInnerInterceptor = new DynamicTableNameInnerInterceptor(); HashMap<String, TableNameHandler> map = new HashMap<String, TableNameHandler>(2) {{ put("user", (sql, tableName) -> { String year = "_2018"; int random = new SecureRandom().nextInt(10); if (random % 2 == 1) { year = "_2019"; } return tableName + year; }); }}; dynamicTableNameInnerInterceptor.setTableNameHandlerMap(map); interceptor.addInnerInterceptor(dynamicTableNameInnerInterceptor); interceptor.addInnerInterceptor(paginationInnerInterceptor); interceptor.addInnerInterceptor(blockAttackInnerInterceptor); return interceptor; } } |
我们这里把user表名替换成user_2018或者user_2019随机
演示如下，我们原本表名为user，执行查询后可以看到替换成了user_2018
再次执行变成了user_2019
