Question

我试图将报告写入文本文件。当我使用print方法时，一切看起来都没问题，但在文件中没有写任何内容。这是我的代码。

public void writeFile(String filename,String report){
    try{
        FileWriter fw=null;
        try{
            fw = new FileWriter(filename);
            fw.write("The game report \n");
            fw.write(report);
            fw.write("Hope everyone has enjoyed it");
            fw.flush();
        }
        catch(FileNotFoundException e){
            System.out.println(filename +"not found");
            System.exit(0);
        }
        finally{
            try{
                fw.close();
            }
            catch( Exception exp){
                System.out.println("Problem closing the filewriter");
            }
        }
    }
    catch(IOException e) {
        e.printStackTrace();
        System.exit(1);
    }   
}

这是主方法的代码。

public class MainDarts {
    public static void main(String[] args) {
        GameManager manager = new GameManager();
        manager.readFile("Data.csv");
        manager.Execute();
        String report = manager.getOverallReport();
        manager.writeFile("OutputData.txt", report);

    }
}

Answer 1

像这样使用PrintWriter类

PrintWriter writer = new PrintWriter("filename.txt", "UTF-8");
writer.println("Hello");
writer.flush();
writer.close();

Answer 2

或者您可以考虑更简单的事情

try (BufferedWriter writer = Files.newBufferedWriter(Paths.get(filename))) {
  writer.write(report);
}

或

Files.write(Paths.get(filename), report.getBytes());

写入文本文件时出现问题

2 个答案: