写入CSV文件时，超过15位的数字将转换为0

Question

I have to prepare a string with data and commas. Then write that string to a csv file using java.util.zip.ZipEntry.

Now the problem is: it works fine for the number which are less than or equal to 15 in length.

For numeric data more than 15 digits long gets converted to 0.

So I tried by using enclosing numeric data between double quotes for converting numeric data to string to avoid that issue. But that is not working.

ZipEntry ze = new ZipEntry("my.csv");
ByteArrayOutputStream ba = new ByteArrayOutputStream();
ZipOutputStream zo = new ZipOutputStream(ba);
zo.putNextEntry(ze);
String csv = "123456789012345,12345678901234567890,\"hello\",";

zo.write(csv.getBytes());
zo.closeEntry();

can anyone suggest something on this?

Answer 1

Just a guess: you are opening the generated csv in MS Excel.

Use a text editor to check the file.

There is a bug report which says: "Last digits are changed to zeroes when you type long numbers in cells of Excel"