Question

我在将文本保存到文件时遇到问题，我将文本字段中的文本保存到文件中。文本字段保存到文件正常，但当我关闭程序重新打开它并尝试保存新条目时，它会擦除文件并破坏它。非常感谢帮助:)）

        // BUTTON SAVE ------------------------------------------
    if(e.getSource() == btnSave)
    {
        // Call the saveEntry method that will copy the current
        // TextField entries from the screen to the current
        // record in the array in memory.
        saveEntry(currentEntry);
    }


public void saveEntry(int i) // 
{
    PersonsInfoData[i].setPersonsInfo(txtPersonsName.getText(),txtLikes.getText(),txtDislikes.getText(), txtBdayDay.getText(), txtBdayMonth.getText()); 

    // You may also wish to write all the records that are currently in the array
    //       to your data file on the hard drive (USB, SSD, or equivalent)
    writeFile(dataFileName);
}


public void writeFile(String fileName)
{
    try
    {

        PrintWriter printFile = new PrintWriter(new FileWriter("BirthdayTracker.txt"));   

        for(int i = 0; i < numberOfEntries; i++)
        {
            printFile.println(PersonsInfoData[i].getPersonsName() + "," + PersonsInfoData[i].getPersonsLikes() + "," + PersonsInfoData[i].getPersonsDislikes()  + "," + PersonsInfoData[i].getBdayDay() + "," + PersonsInfoData[i].getBdayMonth() );
        }

        printFile.close();
    }
    catch (Exception e)
    {
        System.err.println("Error Writing File: " + e.getMessage());
    }

Answer 1

您应该在附加模式下创建FileWriter对象，如下所示

new FileWriter（“BirthdayTracker.txt”，true）;

将文本保存到文件时遇到问题

1 个答案: