与 iPhone 应用程序使用相同的服务器端服务相比,HttpURLConnection.getInputStream 占用了很多时间。
以下代码用于该服务:
date= new java.util.Date();
Log.d("time","Time Stamp before posting "+new Timestamp(date.getTime()));
URL ur= new URL(url);
HttpURLConnection conn = (HttpURLConnection) ur.openConnection();
conn.setRequestProperty("Connection", "close");
conn.setReadTimeout(10000);
conn.setConnectTimeout(15000);
conn.setRequestMethod("POST");
conn.setDoInput(true);
conn.setDoOutput(true);
OutputStream os = conn.getOutputStream();
BufferedWriter writer = new BufferedWriter(
new OutputStreamWriter(os, "UTF-8"));
writer.write(getQuery(nameValuePairs));
writer.close();
os.close();
conn.connect();
StringBuffer response=null;
try{
Log.d("time","Time Stamp bfr InputStream "+new Timestamp(date.getTime()));
InputStream is = conn.getInputStream();
date= new java.util.Date();
Log.d("time","Time Stamp aftr InputStream "+new Timestamp(date.getTime()));
BufferedReader rd = new BufferedReader(new InputStreamReader(is));
String line;
response = new StringBuffer();
while((line = rd.readLine()) != null) {
response.append(line);
response.append('\r');
}
rd.close();
response.toString();
result=response.toString();
} catch (Exception e) {
}
为了检查服务使用时间,我打印了时间戳的日志条目。
整个过程的平均时间如下:
发布到服务器的平均时间少于2毫秒
创建输入流的平均时间几乎需要5秒钟写响应的平均时间少于2毫秒。
是否有关于输入流为何花费更多时间导致整个服务变得非常缓慢的想法?