使用java 实现先对excel排序,实现纵向合并单元格的功能,并记录单元格坐标和需要合并的行数,给出示例代码
时间: 2024-02-01 15:15:33 浏览: 21
好的,关于您的问题,我可以为您提供以下示例代码:
```java
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.InputStream;
import java.io.OutputStream;
import java.util.ArrayList;
import java.util.Collections;
import java.util.Comparator;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.Map.Entry;
import org.apache.poi.hssf.usermodel.HSSFWorkbook;
import org.apache.poi.ss.usermodel.Cell;
import org.apache.poi.ss.usermodel.Row;
import org.apache.poi.ss.usermodel.Sheet;
import org.apache.poi.ss.usermodel.Workbook;
public class ExcelUtil {
/**
* 对 Excel 进行排序,纵向合并单元格,并记录单元格坐标和需要合并的行数
*
* @param filePath Excel 文件路径
* @throws Exception
*/
public static void sortAndMergeCell(String filePath) throws Exception {
// 加载 Excel 文件
InputStream inputStream = new FileInputStream(new File(filePath));
Workbook workbook = new HSSFWorkbook(inputStream);
Sheet sheet = workbook.getSheetAt(0);
// 对 Excel 进行排序
Comparator<Row> comparator = new Comparator<Row>() {
public int compare(Row row1, Row row2) {
if (row1.getLastCellNum() < row2.getLastCellNum()) {
return -1;
} else if (row1.getLastCellNum() > row2.getLastCellNum()) {
return 1;
}
return 0;
}
};
List<Row> rowList = new ArrayList<Row>();
for (int i = 0; i <= sheet.getLastRowNum(); i++) {
rowList.add(sheet.getRow(i));
}
Collections.sort(rowList, comparator);
// 纵向合并单元格
Map<String, Integer> mergeMap = new HashMap<String, Integer>();
for (Row row : rowList) {
for (int j = 0; j < row.getLastCellNum(); j++) {
Cell cell = row.getCell(j);
if (cell != null && !cell.toString().equals("")) {
String key = j + ":" + cell.toString();
if (mergeMap.containsKey(key)) {
int rowIndex = mergeMap.get(key);
int mergeCount = rowIndex + 1;
while (mergeCount <= row.getRowNum()) {
Cell mergeCell = sheet.getRow(mergeCount).getCell(j);
if (mergeCell == null) {
mergeCell = sheet.getRow(mergeCount).createCell(j);
}
if (mergeCount == rowIndex + mergeMap.get(key)) {
mergeCell.setCellValue(cell.toString());
}
mergeCell.setCellStyle(cell.getCellStyle());
mergeCount++;
}
mergeMap.replace(key, mergeMap.get(key) + 1);
} else {
mergeMap.put(key, row.getRowNum());
}
}
}
}
// 记录单元格坐标和需要合并的行数
List<String> cellList = new ArrayList<String>();
for (Entry<String, Integer> entry : mergeMap.entrySet()) {
String[] keyValue = entry.getKey().split(":");
String key = keyValue[1] + "," + keyValue[0];
String value = entry.getValue().toString();
cellList.add(key + ";" + value);
}
// 输出结果到新的 Excel 文件
OutputStream outputStream = new FileOutputStream(new File("result.xls"));
workbook.write(outputStream);
workbook.close();
System.out.println("单元格坐标和需要合并的行数:");
for (String cell : cellList) {
System.out.println(cell);
}
}
}
```
以上是实现先对 Excel 排序,实现纵向合并单元格的功能,并记录单元格坐标和需要合并的行数的示例代码,您可以参考实现。