將文本追加到文件的末尾

Question

我正在使用下面的代碼段將文本寫入文件的每一次調用結束。但是，它正在擦除舊數據，然後將新數據寫入文件的開頭。我如何修復下面的代碼，以便它追加新的數據總是文件的結尾？

public boolean writeToFile(String directory, String filename, String data){ 
    File out; 
    OutputStreamWriter outStreamWriter = null; 
    FileOutputStream outStream = null; 

    out = new File(new File(directory), filename); 

    if (out.exists() == false){ 
       out.createNewFile(); 
    } 

    outStream = new FileOutputStream(out) ; 
    outStreamWriter = new OutputStreamWriter(outStream); 

    outStreamWriter.append(data); 
    outStreamWriter.flush(); 
    }   

Answer 1

嘗試設置追加在FileOutputStreamboolean值爲true：

outStream = new FileOutputStream(out, true); 
outStreamWriter = new OutputStreamWriter(outStream);