Java 在Android中,当命令包含中文或空格时,如何发送HTTP命令?
我正在开发一个应用程序,它可以与IP摄像头一起工作 以下命令格式适用于IP摄像头。 我可以输入任何值并发送到IP摄像头 当命令为Java 在Android中,当命令包含中文或空格时,如何发送HTTP命令?,java,android,http,Java,Android,Http,我正在开发一个应用程序,它可以与IP摄像头一起工作 以下命令格式适用于IP摄像头。 我可以输入任何值并发送到IP摄像头 当命令为http://192.72.1.1/config?set&value=111,它可以发送到IP摄像头。IP摄像头也响应正常 但当我尝试发送包含空格或中文的命令时,它将失败 http://192.72.1.1/config?set&value=111 222 http://192.72.1.1/config?set&value=二三四 代码如下所示: public st
http://192.72.1.1/config?set&value=111
,它可以发送到IP摄像头。IP摄像头也响应正常
但当我尝试发送包含空格或中文的命令时,它将失败
http://192.72.1.1/config?set&value=111 222
http://192.72.1.1/config?set&value=二三四代码>
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,将显示以下日志:
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)
08-17 18:13:18.105:W/System.err(22120):java.net.ProtocolException:意外状态行:HTTP/0.0 400错误请求
08-17 18:13:18.105:W/System.err(22120):位于com.android.okhttp.internal.http.StatusLine.(StatusLine.java:38)
08-17 18:13:18.105:W/System.err(22120):位于com.android.okhttp.internal.http.HttpConnection.readResponse(HttpConnection.java:180)
08-17 18:13:18.105:W/System.err(22120):位于com.android.okhttp.internal.http.HttpTransport.readResponseHeaders(HttpTransport.java:101)
08-17 18:13:18.105:W/System.err(22120):位于com.android.okhttp.internal.http.HttpEngine.readResponse(HttpEngine.java:628)
08-17 18:13:18.105:W/System.err(22120):位于com.android.okhttp.internal.http.HttpURLConnectionImpl.execute(HttpURLConnectionImpl.java:388)
08-17 18:13:18.105:W/System.err(22120):位于com.android.okhttp.internal.http.HttpURLConnectionImpl.getResponse(HttpURLConnectionImpl.java:332)
08-17 18:13:18.106:W/System.err(22120):位于com.android.okhttp.internal.http.HttpURLConnectionImpl.getResponseCode(HttpURLConnectionImpl.java:500)
08-17 18:13:18.106:W/System.err(22120):在tw.com.WIFI\u CAM\u R660.IPCamViewer.CameraCommand.sendRequest(CameraCommand.java:734)
08-17 18:13:18.106:W/System.err(22120):在tw.com.WIFI_CAM_R660.IPCamViewer.CameraCommand$SendRequest.doInBackground(CameraCommand.java:773)
08-17 18:13:18.106:W/System.err(22120):在tw.com.WIFI\u CAM\u R660.IPCamViewer.CameraCommand$SendRequest.doInBackground(CameraCommand.java:1)
08-17 18:13:18.106:W/System.err(22120):在android.os.AsyncTask$2.call(AsyncTask.java:292)
08-17 18:13:18.106:W/System.err(22120):在java.util.concurrent.FutureTask.run(FutureTask.java:237)
08-17 18:13:18.106:W/System.err(22120):在android.os.AsyncTask$SerialExecutor$1.run(AsyncTask.java:231)
08-17 18:13:18.106:W/System.err(22120):位于java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1112)
08-17 18:13:18.106:W/System.err(22120):位于java.util.concurrent.ThreadPoolExecutor$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intresponseCode=urlConnection.getResponseCode()
有人知道如何发送包含空格和中文的命令吗
提前感谢。您需要先对URL进行编码,以便它可以在查询字符串中传输 您需要对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);
您需要首先对URL进行编码,以便它可以在查询字符串中传输 您需要对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);
使用提供的解决方案Knossos,或者如果您的命令值已硬编码,则可以手动对其进行编码
使用提供的解决方案Knossos,或者如果您的命令值已硬编码,则可以手动编码
对于空格,请尝试添加
“
(双引号)在值周围。应该是url编码,而且我发现您的URI很奇怪,从法律上讲,键/值
参数应该总是成对显示,例如/config?set=true&value=11112222
,因此不建议使用参数集
没有值,并且可能会出现问题。不要执行“发送命令”“当HTTP获取操作时;这本身就是个问题。对于空格,请尝试添加“
(双引号)在值周围。应该是url编码,而且我发现您的URI很奇怪,从法律上讲,键/值
参数应该总是成对显示,例如/config?set=true&value=11112222
,因此不建议使用参数集
没有值,并且可能会出现问题。不要执行“发送命令”“当HTTP获取操作时;这本身就是个问题。