我想从我的2d ArrayList导出数据,如代码所示:
ArrayList<ArrayList<Double>> bpDataAllLists = messtisch.getMeasDataBrushP();
for (ArrayList<Double> bpDataList : bpDataAllLists) {
int bp = ((bpDataAllLists.indexOf(bpDataList)) + 1);
int measPerP = messtisch.getBpMeasPerPoint();
HSSFWorkbook bprofileWb = new HSSFWorkbook();
HSSFSheet mainsheet = bprofileWb.createSheet("Meting");
HSSFRow bprofileRow = mainsheet.createRow(5);
HSSFCell bprofilecell = bprofileRow.createCell(3);
time = messtisch.getMeastime();
formater = new SimpleDateFormat("yyyy-MM-dd");
String date = formater.format(time.getTime());
bprofilecell.setCellValue(date);
int sCol = 7;
for (int j = 1; j < measPerP + 1; j++) {
// TODO create measperpoint colmn
int sRow = 15;
int bpPointsSize = bpDataList.size();
for (int k = j - 1; k < bpPointsSize; k += measPerP) {
bprofileRow = mainsheet.createRow(sRow);
bprofilecell = bprofileRow.createCell(sCol);
bprofilecell.setCellValue(bpDataList.get(k));
System.out.printf("Row: %d, Column: %d, Value: %f\n",sRow,sCol, bpDataList.get(k));
sRow+=1;
}
sCol+=1;
}
}
}
通过打印功能,数据正确如下:
行:15,列:7,值:12,000000
行:16,列:7,值:12,000000
行:17,列:7,值:12,000000
行:18,列:7,值:12,000000
行:19,列:7,值:12,000000
行:20,列:7,值:12,000000
行:21,列:7,值:12,000000
行:22,列:7,值:12,000000
行:23,列:7,值:12,000000
行:24,列:7,值:12,000000
行:25,列:7,值:12,000000
行:26,列:7,值:12,000000
行:27,列:7,值:12,000000
行:28,列:7,值:12,000000
行:29,列:7,值:12,000000
行:30,列:7,值:12,000000
行:31,列:7,值:12,000000
行:32,列:7,值:12,000000
行:33,列:7,值:12,000000
行:34,列:7,值:12,000000
行:35,列:7,值:12,000000
行:36,列:7,值:12,000000
行:37,列:7,值:12,000000
行:38,列:7,值:12,000000
行:15,列:8,值:14,000000
行:16,列:8,值:14,000000
行:17,列:8,值:14,000000
行:18,列:8,值:14,000000
行:19,列:8,值:14,000000
行:20,列:8,值:14,000000
行:21,列:8,值:14,000000
行:22,列:8,值:14,000000
行:23,列:8,值:14,000000
行:24,列:8,值:14,000000
行:25,列:8,值:14,000000
行:26,列:8,值:14,000000
行:27,列:8,值:14,000000
行:28,列:8,值:14,000000
行:29,列:8,值:14,000000
行:30,列:8,值:14,000000
行:31,列:8,值:14,000000
行:32,列:8,值:14,000000
行:33,列:8,值:14,000000
行:34,列:8,值:14,000000
行:35,列:8,值:14,000000
行:36,列:8,值:14,000000
行:37,列:8,值:14,000000
行:38,列:8,值:14,000000
行:15,列:9,值:16,000000
行:16,列:9,值:16,000000
行:17,列:9,值:16,000000
行:18,列:9,值:16,000000
行:19,列:9,值:16,000000
行:20,列:9,值:16,000000
行:21,列:9,值:16,000000
行:22,列:9,值:16,000000
行:23,列:9,值:16,000000
行:24,列:9,值:16,000000
行:25,列:9,值:16,000000
行:26,列:9,值:16,000000
行:27,列:9,值:16,000000
行:28,列:9,值:16,000000
行:29,列:9,值:16,000000
行:30,列:9,值:16,000000
行:31,列:9,值:16,000000
行:32,列:9,值:16,000000
行:33,列:9,值:16,000000
行:34,列:9,值:16,000000
行:35,列:9,值:16,000000
行:36,列:9,值:16,000000
行:37,列:9,值:16,000000
行:38,列:9,值:16,000000
但是在Excel导出中,我得到了如图excel screenshot所示的内容。我无法得到,我做错了什么。请帮忙。
答案 0 :(得分:0)
每次创建一行时,都会创建一个新行并覆盖以前的数据。所以我只需要创建一次行。如果该行存在,则写入同一行。
使用此方法:
private HSSFRow getRow(HSSFSheet sheet, int rowNum) {
HSSFRow sheetRow = null;
sheetRow = sheet.getRow(rowNum);
if (null == sheetRow) {
sheetRow = sheet.createRow(rowNum);
}
return sheetRow;
}
现在,我用mainsheet.createRow(sRow);
更改了getRow(mainsheet, sRow);
它奏效了。