追加内容到指定文件

FileOutputStream fileOutputStream = null;

OutputStreamWriter outputStreamWriter = null;

BufferedWriter bufferedWriter = null;

File file = new File("D:/test.txt");

fileOutputStream = new FileOutputStream(file, true);

outputStreamWriter = new OutputStreamWriter(fileOutputStream);

bufferedWriter = new BufferedWriter(outputStreamWriter);

for (String conent : allFilePath) {

bufferedWriter.write("," + conent);

}