相关疑难解决方法(0)

我一直在使用下面的成语一段时间了.它似乎是最广泛的,至少在我访问过的网站上.

是否有更好/不同的方式将文件读入Java中的字符串？

private String readFile(String file) throws IOException {
    BufferedReader reader = new BufferedReader(new FileReader (file));
    String         line = null;
    StringBuilder  stringBuilder = new StringBuilder();
    String         ls = System.getProperty("line.separator");

    try {
        while((line = reader.readLine()) != null) {
            stringBuilder.append(line);
            stringBuilder.append(ls);
        }

        return stringBuilder.toString();
    } finally {
        reader.close();
    }
}

我想写一个String(冗长但包裹),来自JTextArea.当字符串打印到控制台时,格式化与它的格式相同Text Area,但是当我使用BufferedWriter将它们写入文件时,它正在String单行写入.

以下代码片段可以重现它:

public class BufferedWriterTest {
    public static void main(String[] args) throws IOException {
        String string = "This is lengthy string that contains many words. So\nI am wrapping it.";
        System.out.println(string);
        File file = new File("C:/Users/User/Desktop/text.txt");
        FileWriter fileWriter = new FileWriter(file);
        BufferedWriter bufferedWriter = new BufferedWriter(fileWriter);
        bufferedWriter.write(string);
        bufferedWriter.close();
    }
}

什么地方出了错？怎么解决这个？谢谢你的帮助!