Question

我是新手，我在这里有一个程序扫描两个jtextfields输入并将输入写入两个文本文件。我试图为两个jtextfields输入一个新输入，但显然它没有将新输入写入文本文件。这是我的代码。有人可以帮帮我吗？

        File outFile = new File("Z://Question.txt");
        FileOutputStream outFileStream = new FileOutputStream(outFile);
        PrintWriter outStream = new PrintWriter(outFileStream);
        File outFile2 = new File("Z://Answer.txt");
        FileOutputStream outFileStream2 = new FileOutputStream(outFile2);
        PrintWriter outStream2 = new PrintWriter(outFileStream2);

        JTextField question = new JTextField(30);
        JTextField answer = new JTextField(15);

        File inFile = new File("Z://Question.txt");
        FileReader myFileReader = new FileReader(inFile);
        Scanner sc = new Scanner(myFileReader);
        File inFile2 = new File("Z://Answer.txt");
        FileReader myFileReader2 = new FileReader(inFile2);
        Scanner sc2 = new Scanner(myFileReader2);

        rate.addActionListener(new ActionListener() {

        public void actionPerformed(ActionEvent e) {
        String ques = question.getText();
        String ans = answer.getText();
        outStream.write(ques);
        outStream.close();
        outStream2.write(ans);
        outStream2.close();
        String s = sc.nextLine();
        String[] question2 = s.split(" ");
        System.out.print("Question: ");
        for (int i = 0; i < question2.length; i++) {
            System.out.print(question2[i] + " ");
            x++;
        }                                                               //debug
        String[] QEquivalent = new String[question2.length];
        System.out.println();
        System.out.println("Number of words in the question: " + x);
        String s2 = sc2.nextLine();
        String[] Answer = s2.split(" ");
        System.out.print("Answer/s: ");
        for (int c = 0; c < Answer.length; c++) {
            System.out.print(Answer[c] + " ");
        } 
        }
        });

Answer 1

通过仅传入文件构造FileOutputStream时，默认情况下，它不会附加。您需要做的是确保其附加是new FileOutputStream(file, true);

另外，我还没有测试过您的代码，但是看起来您正在关闭流，而只是声明和初始化您的流只有一次，所以下次尝试写入时会因为流关闭而失败。尝试使用close()替换flush()，并在WindowListener添加JFrame。然后，您可以在windowClosing关闭您的信息流。据我所知，你需要制作你的流全局声明。

扫描jtextfield进行输入，写入文本文件，再次扫描新输入，直到用户关闭面板

1 个答案: