Question

由于某种原因，以下代码在我的程序中被try-catch语句包围，但是它不能正常工作，因为它继续抛出NumberFormatException，并擦除属性文件清除信息。感谢帮助。

        File propFile = new File("path\to\file\properties.properties");
        FileOutputStream outStream  = new FileOutputStream(propFile);
        FileInputStream inStream = new FileInputStream(propFile);

        Properties prop = new Properties();
        prop.load(inStream);

        out.println(prop.getProperty("entryID"));

        prop.setProperty("entryID", Integer.toString(Integer.parseInt(prop.getProperty("entryID"))+1));

        prop.store(outStream, "");

Answer 1

只需更改序列行，即可在阅读内容之前创建FileOutStream对象

请查找附件工作代码

文件propFile =新文件（“path \ to \ file \ properties.properties”）;

    FileInputStream inStream = new FileInputStream(propFile);

    Properties prop = new Properties();
    prop.load(inStream);

    System.out.println(prop.getProperty("entryID"));

    prop.setProperty("entryID", Integer.toString(Integer.parseInt(prop.getProperty("entryID"))+1));
    FileOutputStream outStream  = new FileOutputStream(propFile);
    prop.store(outStream, "");

Java写入属性文件不起作用

1 个答案: