java inputStream转String简记

1.(StringBuffer+InputStreamReader+BufferedReader )，不推荐使用，BufferedReader在readLine（） 时会在读取到换行符时直接返回，然后读取下一行，会丢失换行符（what fk is that？）。

public String inputStreamString (InputStream in) throws IOException {
  String tempLine="";
  StringBuffer resultBuffer = new StringBuffer();
  InputStreamReader inputStreamReader = new InputStreamReader(in);
  BufferedReader reader = new BufferedReader(inputStreamReader);
  while ((tempLine = reader.readLine()) != null) {
    resultBuffer.append(tempLine);
  }
  return  resultBuffer.toString();
}

2.(ByteArrayOutputStream)推荐使用

public String intputStreamString2(InputStream inputStream){
  ByteArrayOutputStream baos = new ByteArrayOutputStream();
  int i=-1;
  try {
    while((i=inputStream.read())!=-1){
      baos.write(i);
    }
    return baos.toString();
  } catch (IOException e) {
    e.printStackTrace();
  }
  return "";
}