寫入excel時無法使用動態字符串值作爲列名稱

Question

我正在嘗試將值articlevalue寫入Excel表格。 我有專欄「星期一」，「星期二」......「星期天」在Excel中，因爲我每天運行它。 我計算出哪一列寫入的值也是一個名爲「dayofweek」的字符串變量，但是：datatable.setCellData（「Records」，dayofweek，i + 1，articlevalue）;

它不喜歡dayofweek變量？

如果我使用： datatable.setCellData（「Records」，「Monday」，i + 1，articlevalue）;

它會正常工作，但我想控制列值。

見代碼：

String articlevalue = "1 " + outArray[0] + "\r\n" + "2 " + outArray[1] + "\r\n" + "3 " + outArray[2] + "\r\n" + "4 " + outArray[3] + "\r\n" + "5 " + outArray[4]; 
// System.out.println(article value); 

    Calendar calendar = Calendar.getInstance(); 
    int day = calendar.get(Calendar.DAY_OF_WEEK); 

    String todayDate = String.valueOf(day); 

     if (todayDate .equals("1")) { 
      String dayofweek = "Sunday"; 
      System.out.println(dayofweek); 
     } 
     else if (todayDate .equals("2")) { 
      String dayofweek = "Monday"; 
      System.out.println(dayofweek); 
     } 
     else if (todayDate .equals("3")) { 
      String dayofweek = "Tuesday"; 
      System.out.println(dayofweek); 
     } 
     else if (todayDate .equals("4")) { 
      String dayofweek = "Wednesday"; 
      System.out.println(dayofweek); 
     } 
     else if (todayDate .equals("5")) { 
      String dayofweek = "Thursday"; 
      System.out.println(dayofweek); 
     } 
     else if (todayDate .equals("6")) { 
      String dayofweek = "Friday"; 
      System.out.println(dayofweek); 
     } 
     else if (todayDate .equals("7")) { 
      String dayofweek = "Saturday"; 
      System.out.println(dayofweek); 
     } 
// I want to use the following to , but it doesn't like dayofweek 
    datatable.setCellData("Records",dayofweek,i+1,articlevalue); 

Answer 1

問題是星期幾是不是在正確的範圍界定，所以當你做setCellData調用變量不存在。

嘗試是這樣的：使用開關/箱，也可能是地圖

String dayofweek = null; 
    if (todayDate .equals("1")) { 
     dayofweek = "Sunday"; 
     System.out.println(dayofweek); 
    } 
    else if (todayDate .equals("2")) { 
     dayofweek = "Monday"; 
     System.out.println(dayofweek); 
    } 
    else if (todayDate .equals("3")) { 
     dayofweek = "Tuesday"; 
     System.out.println(dayofweek); 
    } 
    else if (todayDate .equals("4")) { 
     dayofweek = "Wednesday"; 
     System.out.println(dayofweek); 
    } 
    else if (todayDate .equals("5")) { 
     dayofweek = "Thursday"; 
     System.out.println(dayofweek); 
    } 
    else if (todayDate .equals("6")) { 
     dayofweek = "Friday"; 
     System.out.println(dayofweek); 
    } 
    else if (todayDate .equals("7")) { 
     dayofweek = "Saturday"; 
     System.out.println(dayofweek); 
    } 

這也可以作出更優雅。