mybatis获取表名_mybatis plus 的动态表名的配置详解
mybatis plus簡介
詳見mybatis plus的官網
業務要求
業務上要求存儲數據的時候根據某個字段動態的選擇數據要存儲的表.
如根據code字段: code->[1001,1002]來進行選擇存儲的表:
經過下面的配置實現動態表名如 --> table1_1001,table_1002的效果.以此動態生成表名的效果.
具體實現
MPConfig.java
import com.alibaba.fastjson.JSON;
import com.alibaba.fastjson.JSONObject;
import com.baomidou.mybatisplus.extension.parsers.DynamicTableNameParser;
import com.baomidou.mybatisplus.extension.parsers.ITableNameHandler;
import com.baomidou.mybatisplus.extension.plugins.PaginationInterceptor;
import org.apache.ibatis.reflection.MetaObject;
import org.mybatis.spring.annotation.MapperScan;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import java.util.Collections;
import java.util.HashMap;
import java.util.List;
/**
* @Author: xuzz
* @Description:
* @Date: Created in 上午11:22 19-10-12
* @Modified By:
*/
@Configuration
@MapperScan("com.dao")
public class MPConfig {
@Autowired
private Tables tableNames;
/**
* @Author: xuzz
* @Date: 上午11:46 19-10-12
* 動態表名
*/
@Bean
public PaginationInterceptor paginationInterceptor(){
PaginationInterceptor paginationInterceptor = new PaginationInterceptor();
DynamicTableNameParser dynamicTableNameParser = new DynamicTableNameParser();
dynamicTableNameParser.setTableNameHandlerMap(new HashMap(2){{
//涉及表集合
List tables = tableNames.getTableNames();
//動態表規則 初始表名+_+code
tables.forEach(tableTitle -> put(tableTitle,(metaObject, sql, tableName) -> tableName + "_" + String.valueOf(getParamValue("關鍵字段名",metaObject))));
}});
paginationInterceptor.setSqlParserList(Collections.singletonList(dynamicTableNameParser));
return paginationInterceptor;
}
/**
* @Author: xuzz
* @Date: 下午2:55 19-10-12
* 獲取參數值
*/
private Object getParamValue(String title, MetaObject metaObject){
//獲取參數
Object originalObject = metaObject.getOriginalObject();
JSONObject originalObjectJSON = JSON.parseObject(JSON.toJSONString(originalObject));
JSONObject boundSql = originalObjectJSON.getJSONObject("boundSql");
JSONObject parameterObject = boundSql.getJSONObject("parameterObject");
return parameterObject.get(title);
}
Tables.java 表頭列表類
@Configuration
@ConfigurationProperties("mp")
public class Tables {
private List tableNames;
public List getTableNames() {
return tableNames;
}
public void setTableNames(List tableNames) {
this.tableNames = tableNames;
}
}
application.yml
mp:
tableNames: #表頭列表
- table1
- table2
- table3
其他基礎配置的無異
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原文鏈接:https://blog.csdn.net/XuZZ94/article/details/102547671
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