byte[] bytes = Files.readAllBytes(path);
String content = new String(bytes, "utf-8");
completeDoc.setContent(content);

z 这是第一种

InputStream inputStream = Files.newInputStream(path);
BufferedReader bufferedReader = new BufferedReader(new InputStreamReader(inputStream));
StringBuilder builder = new StringBuilder();
String temp;
while((temp=bufferedReader.readLine()) != null){
    builder.append(temp);
}
bufferedReader.close();
completeDoc.setContent(builder.toString());

d请问这俩种读取文件的方式，哪一个更可取，我试了一下，反而第一种的速度稍微快那么一点点