Java POI: How to find an Excel cell with a string value and get its position (row) to use that position to find another cell

问题

I'm looking for a cell in a spreadsheet that has the string 'Total' and then use the row in which that cell is to find the total value in another cell which is always the same cell/column (the 10th cell in a 0 based index).

I have the following code, which has no errors (syntax), but the findCell method is not returning rowNum value:

    public static void main(String[] args) throws IOException{

        String fileName = "C:\\file-path\\report.xls";
        String cellContent = "Total";
        int rownr=0, colnr = 10;

        InputStream input = new FileInputStream(fileName);

        HSSFWorkbook wb = new HSSFWorkbook(input);
        HSSFSheet sheet = wb.getSheetAt(0);

        rownr = findRow(sheet, cellContent);

        output(sheet, rownr, colnr);

        finish();
    }

    private static void output(HSSFSheet sheet, int rownr, int colnr) {
        /*
         * This method displays the total value of the month
         */

        HSSFRow row = sheet.getRow(rownr);
        HSSFCell cell = row.getCell(colnr);

                System.out.println("Your total is: " + cell);           
    }

    private static int findRow(HSSFSheet sheet, String cellContent){
        /*
         *  This is the method to find the row number
         */

        int rowNum = 0; 

        for(Row row : sheet) {
            for(Cell cell : row) {

                while(cell.getCellType() == Cell.CELL_TYPE_STRING){

                    if(cell.getRichStringCellValue().getString () == cellContent);{

                            rowNum = row.getRowNum();
                            return rowNum;  
                    }
                }
            }
        }               
        return rowNum;
    }

    private static void finish() {

        System.exit(0);
    }
}   

回答1:

This method fix is the solution to your problem:

private static int findRow(HSSFSheet sheet, String cellContent) {
    for (Row row : sheet) {
        for (Cell cell : row) {
            if (cell.getCellType() == Cell.CELL_TYPE_STRING) {
                if (cell.getRichStringCellValue().getString().trim().equals(cellContent)) {
                    return row.getRowNum();  
                }
            }
        }
    }               
    return 0;
}

Keep in mind that your colnr is still a fixed value.

回答2:

You have a semicolon after your if statement which means your if won't work:

if(cell.getRichStringCellValue().getString () == cellContent);{

Even if this won't resolve your problem, I think your while statement may not be proper for here;

while(cell.getCellType() == Cell.CELL_TYPE_STRING)

As far as I remember, there are other Cell types in POI. Try to put a breakpoint on these lines and check them if they have correct CellType.

来源：https://stackoverflow.com/questions/9049995/java-poi-how-to-find-an-excel-cell-with-a-string-value-and-get-its-position-ro