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add 增加 自定义 批量insert方法

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疯狂的狮子li
2021-06-18 15:27:47 +08:00
parent 281b6b6d2b
commit c98ab8fb51
2 changed files with 64 additions and 4 deletions
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47
ruoyi-common/src/main/java/com/ruoyi/common/core/mybatisplus/methods/InsertAll.java Normal file
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package com.ruoyi.common.core.mybatisplus.methods;
import org.apache.ibatis.executor.keygen.NoKeyGenerator;
import org.apache.ibatis.mapping.MappedStatement;
import org.apache.ibatis.mapping.SqlSource;
import com.baomidou.mybatisplus.core.injector.AbstractMethod;
import com.baomidou.mybatisplus.core.metadata.TableInfo;
/**
* 单sql批量插入
*
* @author Lion Li
*/
public class InsertAll extends AbstractMethod {
@Override
public MappedStatement injectMappedStatement(Class<?> mapperClass, Class<?> modelClass, TableInfo tableInfo) {
final String sql = "<script>insert into %s %s values %s</script>";
final String fieldSql = prepareFieldSql(tableInfo);
final String valueSql = prepareValuesSqlForMysqlBatch(tableInfo);
final String sqlResult = String.format(sql, tableInfo.getTableName(), fieldSql, valueSql);
SqlSource sqlSource = languageDriver.createSqlSource(configuration, sqlResult, modelClass);
return this.addInsertMappedStatement(mapperClass, modelClass, "insertAll", sqlSource, new NoKeyGenerator(), null, null);
}
private String prepareFieldSql(TableInfo tableInfo) {
StringBuilder fieldSql = new StringBuilder();
fieldSql.append(tableInfo.getKeyColumn()).append(",");
tableInfo.getFieldList().forEach(x -> fieldSql.append(x.getColumn()).append(","));
fieldSql.delete(fieldSql.length() - 1, fieldSql.length());
fieldSql.insert(0, "(");
fieldSql.append(")");
return fieldSql.toString();
}
private String prepareValuesSqlForMysqlBatch(TableInfo tableInfo) {
final StringBuilder valueSql = new StringBuilder();
valueSql.append("<foreach collection=\"list\" item=\"item\" index=\"index\" open=\"(\" separator=\"),(\" close=\")\">");
valueSql.append("#{item.").append(tableInfo.getKeyProperty()).append("},");
tableInfo.getFieldList().forEach(x -> valueSql.append("#{item.").append(x.getProperty()).append("},"));
valueSql.delete(valueSql.length() - 1, valueSql.length());
valueSql.append("</foreach>");
return valueSql.toString();
}
}