Question

例如，假设我有以下字符串，

String str = "Patient: " + patient +
"\nMonth: " + month +
"\nDay : " + day +
"\nYear: " + year 
+"\nDescription: " + description;

//And I write this data to a file, 
PrintWriter outputFile = new PrintWriter("hello.txt");

outputFile.println(str);

然后当我打开它时，文件上的结果只是一行，有没有办法，只需将格式作为传递给文件的字符串。？

提前谢谢。

Answer 1

\ n在UNIX上按预期工作。使用Windows可能需要\ r \ n。请查看https://softwareengineering.stackexchange.com/questions/29075/difference-between-n-and-r-n

Answer 2

就像在Linux系统上编写的一样，它对我有用。如果您使用的是Windows机器，请尝试使用“\ r \ n”作为新行而不是“\ n”。另外一个好习惯是在打开PrintWriter时指定编码。理想情况下，您可以使用System.getProperty（“line.separator”）来获取与平台相关的行分隔符。

String lineSeparator = System.getProperty("line.separator");
String str = "Patient: " + "a" +
            lineSeparator + "Month: " + "a" +
            lineSeparator + "Day : " + "a" +
            lineSeparator + "Year: " + "a"
            lineSeparator + "Description: " + "a";

    try {
        PrintWriter outputFile = new PrintWriter("hello.txt", "UTF-8");
        outputFile.println(str);
        outputFile.close();
        System.out.println("writing file");
    } catch (FileNotFoundException e) {
        e.printStackTrace();
    } catch (UnsupportedEncodingException e) {
        e.printStackTrace();
    }

如何从String java中完全保存文件

2 个答案: