急啊！java中肿么把10万条数据导入Excel,

建议你分批次读出数据（如1批次读1000条数据），然后写道excel中。

这样的话数据量可以保证。
只是数据量太大了，效率低是肯定的。。。

下面是我的程序里的一个函数，你参考一下。
Function BackupData(myOpen, ff) As Boolean
On Error Resume Next
Dim arr(), i, myOpen1, ID As Currency
BackupData = False
rs1.PageSize = 65535
myOpen1 = "select * from (" & myOpen & ") order by ID"
rs1.Open myOpen1, con1, 1, 3
ps = rs1.PageCount
ReDim arr(ps)
For i = 1 To ps
rs1.AbsolutePage = i
arr(i) = rs1.Fields("ID")
Next
rs1.Close
If Err <> 0 Then GoTo myend
If arr(1) = 0 Then GoTo myend
For i = 1 To ps
myOpen1 = "select * into [Excel 8.0;database=" & ff & "].Sheet" & i & " from (" & myOpen & ") where ID >= " & arr(i)
If i < ps Then myOpen1 = myOpen1 & " and ID<" & arr(i + 1)
rs1.Open myOpen1 & " order by ID"
Next
BackupData = Err = 0
Exit Function
myend:
p = InStrRev(ff, "\")
rs1.Open "select * into [Text;HDR=YES;DATABASE=" & Left(ff, p) & "]." & Mid(ff, p + 1) & ".txt from (" & myOpen & ")"
ff = Left(ff, p) & "schema.ini"
If Dir(ff) <> "" Then Kill (ff)
BackupData = Err = 0
End Function

对于大数据量的导入，推荐使用JXL或者XSSF（现代版本）。你可以先将数据存储为List>或自定义对象数组，然后循环写入每个单元格。别忘了设置适当的缓存策略和流式处理方式来提高效率

处理大量数据导入Excel在Java里可以用Apache POI库。首先，你需要创建一个HSSFWorkbook对象，然后逐行读取你的10万条数据，用HSSFSheet添加到工作簿中。记得分批操作以避免内存溢出