如何删除从Excel导入的字符串中的空格

Question

I need to remove all white character from a string and I am not able to do so. Anyone has an idea on how to do it?

Here is my string retrieved from an excel file via jxl API :

"Destination à gauche"

And here are its bytes :

6810111511610511097116105111110-96-32321039711799104101

There is the code I use to remove whitespaces :

public static void checkEntetes(Workbook book) {
        String sheetName = "mysheet";
        System.out.print(sheetName + " : ");
        for(int i = 0; i < getColumnMax(book.getSheet(sheetName)); i++) {
            String elementTrouve = book.getSheet(sheetName).getCell(i, 0).getContents();
            String fileEntete = new String(elementTrouve.getBytes()).replaceAll("\\s+","");
            System.out.println("\t" + elementTrouve + ", " + bytesArrayToString(elementTrouve.getBytes()));
            System.out.println("\t" + fileEntete + ", " + bytesArrayToString(fileEntete.getBytes()));
        }
        System.out.println();
}

And this outputs :

"Destination à gauche", 6810111511610511097116105111110-96-32321039711799104101
"Destination àgauche", 6810111511610511097116105111110-96-321039711799104101

I even tried to make it myself and it still leaves a space before the 'à' char.

public static String removeWhiteChars(String s) {
    String retour = "";
    for(int i = 0; i < s.length(); i++) {
        char c = s.charAt(i);
        if(c != (char) ' ') {
            retour += c;
        }
    }
    return retour;
}

Answer 1

regular expressions to the rescue:

str = str.replaceAll("\\s+", "")

will remove any sequence of whitespace characters. for example:

String input = "Destination à gauche";
String output = input.replaceAll("\\s+","");
System.out.println("output is \""+output+"\"");

outputs Destinationàgauche

if youre starting point is indeed the raw bytes ( byte[] ) you will first need to make them into a String:

byte[] inputData = //get from somewhere
String stringBefore = new String(inputData, Charset.forName("UTF-8")); //you need to know the encoding
String withoutSpaces = stringBefore.replaceAll("\\s+","");
byte[] outputData = withoutSpaces.getBytes(Charset.forName("UTF-8"));

Answer 2

If you would like to use a formula, the TRIM function will do exactly what you're looking for:

+----+------------+---------------------+
|    |     A      |           B         |
+----+------------+---------------------+
| 1  | =TRIM(B1)  |  value to trim here |
+----+------------+---------------------+

So to do the whole column. 1) Insert a column 2) Insert TRIM function pointed at cell you are trying to correct. 3) Copy formula down the page 4) Copy inserted column 5) Paste as "Values"

Reference: Question number 9578397 on stackoverflow.com