我正在开发一款App,它可以与IP Camera配合使用。
以下命令格式适用于IP Camera。 的 http://192.72.1.1/config?set&value=XXXXX
我可以输入任何值并发送到IP摄像机。
当命令为 http://192.72.1.1/config?set&value=111
时,它可以发送到IP Camera。 IP摄像头也响应OK。
但是当我尝试发送包含空格或中文的命令时,它会失败。
http://192.72.1.1/config?set&value=111 222
http://192.72.1.1/config?set&value=二三四
代码如下:
public static String sendRequest(URL url) {
try {
//Show the command
Log.i("CameraCommand", url.toString()) ;
HttpURLConnection urlConnection = (HttpURLConnection) url.openConnection() ;
urlConnection.setUseCaches(false) ;
urlConnection.setDoInput(true) ;
urlConnection.setConnectTimeout(3000) ;
urlConnection.setReadTimeout(8000) ;
urlConnection.connect() ;
int responseCode = urlConnection.getResponseCode() ;
Log.i("CameraControlFragment", "responseCode = " + urlConnection.getResponseCode()) ;
if (responseCode != HttpURLConnection.HTTP_OK) {
return null ;
}
InputStream inputStream = urlConnection.getInputStream() ;
Writer writer = new StringWriter() ;
char[] buffer = new char[1024] ;
try {
Reader reader = new BufferedReader(new InputStreamReader(inputStream, "UTF-8")) ;
int n ;
while ((n = reader.read(buffer)) != -1) {
writer.write(buffer, 0, n) ;
}
} finally {
inputStream.close() ;
}
String string = writer.toString() ;
Log.i("CameraControlFragment", "string = " + string) ;
return string ;
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace() ;
}
return null ;
}
当命令包含空格或中文时,它会显示以下日志:
08-17 18:13:18.105: W/System.err(22120): java.net.ProtocolException: Unexpected status line: HTTP/0.0 400 Bad Request
08-17 18:13:18.105: W/System.err(22120): at com.android.okhttp.internal.http.StatusLine.<init>(StatusLine.java:38)
08-17 18:13:18.105: W/System.err(22120): at com.android.okhttp.internal.http.HttpConnection.readResponse(HttpConnection.java:180)
08-17 18:13:18.105: W/System.err(22120): at com.android.okhttp.internal.http.HttpTransport.readResponseHeaders(HttpTransport.java:101)
08-17 18:13:18.105: W/System.err(22120): at com.android.okhttp.internal.http.HttpEngine.readResponse(HttpEngine.java:628)
08-17 18:13:18.105: W/System.err(22120): at com.android.okhttp.internal.http.HttpURLConnectionImpl.execute(HttpURLConnectionImpl.java:388)
08-17 18:13:18.105: W/System.err(22120): at com.android.okhttp.internal.http.HttpURLConnectionImpl.getResponse(HttpURLConnectionImpl.java:332)
08-17 18:13:18.106: W/System.err(22120): at com.android.okhttp.internal.http.HttpURLConnectionImpl.getResponseCode(HttpURLConnectionImpl.java:500)
08-17 18:13:18.106: W/System.err(22120): at tw.com.WIFI_CAM_R660.IPCamViewer.CameraCommand.sendRequest(CameraCommand.java:734)
08-17 18:13:18.106: W/System.err(22120): at tw.com.WIFI_CAM_R660.IPCamViewer.CameraCommand$SendRequest.doInBackground(CameraCommand.java:773)
08-17 18:13:18.106: W/System.err(22120): at tw.com.WIFI_CAM_R660.IPCamViewer.CameraCommand$SendRequest.doInBackground(CameraCommand.java:1)
08-17 18:13:18.106: W/System.err(22120): at android.os.AsyncTask$2.call(AsyncTask.java:292)
08-17 18:13:18.106: W/System.err(22120): at java.util.concurrent.FutureTask.run(FutureTask.java:237)
08-17 18:13:18.106: W/System.err(22120): at android.os.AsyncTask$SerialExecutor$1.run(AsyncTask.java:231)
08-17 18:13:18.106: W/System.err(22120): at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1112)
08-17 18:13:18.106: W/System.err(22120): at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:587)
08-17 18:13:18.106: W/System.err(22120): at java.lang.Thread.run(Thread.java:818)
CameraCommand.java:734
是int responseCode = urlConnection.getResponseCode()
;
有人知道如何发送包含空格和中文的命令吗?
提前致谢。
答案 0 :(得分:3)
您需要先对您的网址进行编码,以便可以在查询字符串中传输。
您需要为各个参数本身执行此操作。例如:
String encodedValue = URLEncoder.encode(value, "UTF-8");
String url = "http://192.72.1.1/config?set&value=" + encodedValue;
String result = sendRequest(url);
答案 1 :(得分:1)
使用Knossos提供的解决方案,或者如果你的命令值是硬编码的,你可以手动编码。