可以因Java代码给我实现吗
时间: 2023-11-25 17:06:11 浏览: 29
当然可以,以下是一个基于 Apache POI 库的 Java 代码示例,可以实现 A 表车型名称与 B 表车型名称的关联映射:
```java
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.Map;
import org.apache.poi.ss.usermodel.Cell;
import org.apache.poi.ss.usermodel.Row;
import org.apache.poi.xssf.usermodel.XSSFSheet;
import org.apache.poi.xssf.usermodel.XSSFWorkbook;
import org.apache.poi.ss.usermodel.DataFormatter;
public class CarModelMapping {
public static void main(String[] args) {
try {
// 读取 A 表和 B 表的数据
String aFile = "车型名称映射.xlsx";
String bFile = "车型名称映射.xlsx";
FileInputStream aInput = new FileInputStream(aFile);
FileInputStream bInput = new FileInputStream(bFile);
XSSFWorkbook aWorkbook = new XSSFWorkbook(aInput);
XSSFWorkbook bWorkbook = new XSSFWorkbook(bInput);
XSSFSheet aSheet = aWorkbook.getSheetAt(0);
XSSFSheet bSheet = bWorkbook.getSheetAt(1);
// 遍历 A 表中的每个车型名称
Map<String, String> map = new HashMap<String, String>();
DataFormatter formatter = new DataFormatter();
for (Row aRow : aSheet) {
String aName = formatter.formatCellValue(aRow.getCell(0));
String aYear = formatter.formatCellValue(aRow.getCell(1));
String aType = formatter.formatCellValue(aRow.getCell(2));
String aVersion = formatter.formatCellValue(aRow.getCell(3));
// 遍历 B 表中的所有车型名称,进行比对
for (Row bRow : bSheet) {
String bName = formatter.formatCellValue(bRow.getCell(0));
String bYear = formatter.formatCellValue(bRow.getCell(1));
String bType = formatter.formatCellValue(bRow.getCell(2));
String bVersion = formatter.formatCellValue(bRow.getCell(3));
// 比对车型名称
if (aName.equals(bName)) {
// 计算相似度得分
double score = calculateScore(aYear, aType, aVersion, bYear, bType, bVersion);
if (score > 0.8) {
// 如果得分超过阈值,则认为这两个车型名称对应的是同一个车型
String aFullName = aName + " " + aYear + "款" + " " + aType + " " + aVersion;
String bFullName = bName + " " + bYear + "款" + " " + bType + " " + bVersion;
map.put(aFullName, bFullName);
break;
}
}
}
}
// 将结果输出到一个新的 Excel 文件中
XSSFWorkbook resultWorkbook = new XSSFWorkbook();
XSSFSheet resultSheet = resultWorkbook.createSheet("结果");
int rownum = 0;
for (String key : map.keySet()) {
Row row = resultSheet.createRow(rownum++);
Cell cell1 = row.createCell(0);
Cell cell2 = row.createCell(1);
cell1.setCellValue(key);
cell2.setCellValue(map.get(key));
}
FileOutputStream outputStream = new FileOutputStream("映射结果.xlsx");
resultWorkbook.write(outputStream);
outputStream.close();
// 关闭文件流
aWorkbook.close();
bWorkbook.close();
resultWorkbook.close();
} catch (Exception e) {
e.printStackTrace();
}
}
// 计算相似度得分
public static double calculateScore(String aYear, String aType, String aVersion, String bYear, String bType, String bVersion) {
int yearScore = aYear.equals(bYear) ? 1 : 0;
int typeScore = aType.equals(bType) ? 1 : 0;
int versionScore = aVersion.equals(bVersion) ? 1 : 0;
return (yearScore + typeScore + versionScore) / 3.0;
}
}
```
这份代码使用了 Apache POI 库来读取和写入 Excel 文件,同时使用了一个简单的相似度计算方法来确定两个车型名称是否匹配。对于每个匹配的车型名称,将其存储在一个 map 中,并将结果输出到 “映射结果.xlsx” 文件中。这份代码仅供您参考,您可以根据自己的需求进行修改。