mybatis plus簡介

詳見mybatis plus的官網(wǎng)

業(yè)務(wù)要求

業(yè)務(wù)上要求存儲數(shù)據(jù)的時(shí)候根據(jù)某個(gè)字段動態(tài)的選擇數(shù)據(jù)要存儲的表. 如根據(jù)code字段: code->[1001,1002]來進(jìn)行選擇存儲的表: 經(jīng)過下面的配置實(shí)現(xiàn)動態(tài)表名如 --> table1_1001,table_1002的效果.以此動態(tài)生成表名的效果.

具體實(shí)現(xiàn)

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(tài)表名 */ @Bean public PaginationInterceptor paginationInterceptor(){ PaginationInterceptor paginationInterceptor = new PaginationInterceptor(); DynamicTableNameParser dynamicTableNameParser = new DynamicTableNameParser(); dynamicTableNameParser.setTableNameHandlerMap(new HashMap<String, ITableNameHandler>(2){{ //涉及表集合 List<String> tables = tableNames.getTableNames(); //動態(tài)表規(guī)則 初始表名+_+code tables.forEach(tableTitle -> put(tableTitle,(metaObject, sql, tableName) -> tableName + '_' + String.valueOf(getParamValue('關(guān)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(shù)值 */ private Object getParamValue(String title, MetaObject metaObject){ //獲取參數(shù) 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<String> tableNames; public List<String> getTableNames() { return tableNames; } public void setTableNames(List<String> tableNames) { this.tableNames = tableNames; }}

application.yml

mp: tableNames: #表頭列表 - table1 - table2 - table3

其他基礎(chǔ)配置的無異

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