jxl设置列宽

public static void main(String[] args) throws IOException, WriteException{
  jxl.write.WritableWorkbook ww = Workbook.createWorkbook(new File("M:\\workspace\\wxzb\\src\\images\\tes.xls"));
     WritableSheet ws = ww.createSheet("工作簿", 0);
    
     WritableCellFormat wcf = new WritableCellFormat();
     CellView cv = new CellView();
     //cv.setAutosize(true);
    //cv.setSize(40*256);
    
     ws.setColumnView(0, cv);
    
     Label l = new Label(0,1,"这是测试内容。。。。。。。。。");
     ws.addCell(l);
     ww.write();
     ww.close();
}

运行上面的方法，excel里面是没有内容的！如果将cellview注册到Sheet中，则必须调用cellview的setAutoSize(true)

或者setSize(int size)方法。同时调用时按setAutoSize(true)执行！