I'm trying to do a POST from my android Virtual Machine to a web API that is running on my development host.
I can do a GET request and a "normal" JSON POST but when i try to do it as a MultiPart it's getting tricky.
After some research I found a good answer from Muhammad Babar Post multipart request with Android SDK. Which helped with the HTTP Entity.
So, the error :
java.lang.IllegalStateException: Target host must not be null, or set in parameters. scheme=null, host=null, path=http://10.0.2.2:53918/api/Problems
It happens when the code gets to the:
HttpResponse response = client.execute(post);
My code:
public class MainActivity extends Activity {
private DefaultHttpClient mHttpClient;
private String result;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
}
public void ServerCommunication(View view) {
HttpParams params = new BasicHttpParams();
params.setParameter(CoreProtocolPNames.PROTOCOL_VERSION, HttpVersion.HTTP_1_1);
mHttpClient = new DefaultHttpClient(params);
uploadUserPhoto();
}
public void uploadUserPhoto() {
try{
String uri = URLEncoder.encode( "http://10.0.2.2:53918/api/Problems","UTF-8");
HttpClient client = new DefaultHttpClient();
HttpPost post = new HttpPost(uri);
MultipartEntityBuilder entityBuilder = MultipartEntityBuilder.create();
entityBuilder.setMode(HttpMultipartMode.BROWSER_COMPATIBLE);
entityBuilder.addTextBody("Id", "7");
entityBuilder.addTextBody("DateReported", "22/04/2015");
entityBuilder.addTextBody("Category", "C");
HttpEntity entity = entityBuilder.build();
post.setEntity(entity);
HttpResponse response = client.execute(post);
HttpEntity httpEntity = response.getEntity();
result = EntityUtils.toString(httpEntity);
Log.v("result", result);
}
catch(Exception e)
{
e.printStackTrace();
}
}
Please help me resolve the IllegalStateException above.
The URLEncoder is meant to encode query parameters not to create a URI with scheme, host, and port. Instead move the URI to the constructor of the HttpPost for example new HttpPost("http://10.0.2.2").
Also, this API was deprecated at API Level 22, please see the documentation for the newer alternative API.
Related
I wanted to retrieve the XML entity passed in body of HTTP Put method. I used the below code,
DefaultHttpServerConnection conn = new DefaultHttpServerConnection();
conn.bind(serverSocket.accept(), new BasicHttpParams());
HttpRequest request = conn.receiveRequestHeader();
conn.receiveRequestEntity((HttpEntityEnclosingRequest)request);
HttpEntity entity = ((HttpEntityEnclosingRequest)request).getEntity();
System.out.println(EntityUtils.toString(entity));
I could get the norma strings, but when trying to pass the XML entity, I could not even see the print statement.
I hope this code help you.
HttpPost httppost = new HttpPost(SERVICE_EPR);
StringEntity se = new StringEntity(SOAPRequestXML,HTTP.UTF_8);
se.setContentType("text/xml");
httppost.setHeader("Content-Type","application/soap+xml;charset=UTF-8");
httppost.setEntity(se);
HttpClient httpclient = new DefaultHttpClient();
BasicHttpResponse httpResponse =
(BasicHttpResponse) httpclient.execute(httppost);
response.put("HTTPStatus",httpResponse.getStatusLine().toString());
PFB the solution,
DefaultHttpServerConnection conn = new DefaultHttpServerConnection();
params = new BasicHttpParams();
conn.bind(socket, params);
//Extracting the information from the requested URI
HttpRequest request = conn.receiveRequestHeader();
conn.receiveRequestEntity((HttpEntityEnclosingRequest)request);
HttpEntity httpEntity = ((HttpEntityEnclosingRequest)request).getEntity();
if(httpEntity != null){
InputStream instream = httpEntity.getContent();
try {
// do something useful
String myString = IOUtils.toString(instream, "UTF-8");
Log.e(TAG,">>>> http body > "+myString);
} finally {
instream.close();
}
}
Don't put any log or print statements using the data you received, I was getting 'Content already consumed' exception. I had used several logs using the httpEntity i received and that was causing the problem for me. I commented those(marked yellow) and started working.
PF the Apache doc for reference,
http://hc.apache.org/httpcomponents-core-ga/tutorial/pdf/httpcore-tutorial.pdf
I could make it work like this but there gotto be a better way. Any suggestion?
ArrayList<NameValuePair> params = new ArrayList<NameValuePair>();
params.add(new BasicNameValuePair("token", session.getAccessToken()));
HttpParams httpParameters = new BasicHttpParams();
DefaultHttpClient httpClient = new DefaultHttpClient(httpParameters);
HttpPost httpPost = new HttpPost(URL);
try {
httpPost.setEntity(new UrlEncodedFormEntity(params));
} catch (UnsupportedEncodingException e) {}
httpResponse = httpClient.execute(httpPost);
Web Api
[AcceptVerbs("GET", "POST")]
public IHttpActionResult FBToken()
{
string token = ((HttpContextWrapper)Request.Properties["MS_HttpContext"]).Request.Params["token"];
//some code
}
public IHttpActionResult FBToken(TokenRequest request)
{
//some code that uses request.Token
}
public class TokenRequest
{
public string Token { get; set; }
}
UPDATE
Oops, sorry thought I typed more. Anyways, here is the explanation. UrlEncodedFormEntity sets the content type of the request message to application/x-www-form-urlencoded. ASP.NET Web API has built-in media type formatter for de-serializing such content. By using a complex type (TokenRequest class), we ask Web API to bind the request body to this type and we get the token out using the Token property. This is better because we are not taking dependency on ASP.NET anywhere. This is easier to unit test and host-agnostic.
in my app i need to post data to an url to register a new user. Here is the url
http://myurl.com/user.php? email=[EMAIL]&username=[USERNAME]&password[PASS]&img_url=[IMG]
If I do that correctly I should get this message:
{"success":true,"error":null}
or if not {"success":false,"error":"parameters"}
Can somebody guide me through this and tell me how can I do it.
first :
you need to perform all network tasks in an Async thread using:
public class PostData extends AsyncTask<String, Void, String>{
{
#Override
protected String doInBackground(String... params) {
//put all your network code here
}
Second:
create your http request:
i am assuming email, username and IMG as variables over here.
String server ="http://myurl.com/user.php? email=[" + EMAIL + "]&username=[" + USERNAME + "]&password[" + PASS + "]&img_url=["+IMG + "]";
HttpClient httpclient = new DefaultHttpClient();
HttpPost httppost = new HttpPost(server);
//httppost.setHeader("Accept", "application/json");
httppost.setHeader("Accept", "application/x-www-form-urlencoded");
//httppost.setHeader("Content-type", "application/json");
httppost.setHeader("Content-Type", "application/x-www-form-urlencoded");
third:
// Add your data
List<NameValuePair> nameValuePairs = new ArrayList<NameValuePair>(1);
nameValuePairs.add(new BasicNameValuePair("JSONdata", Object));
httppost.setEntity(new UrlEncodedFormEntity(nameValuePairs,"UTF-8"));
try {
HttpResponse response =httpclient.execute(httppost);
} catch (UnsupportedEncodingException e) {
e.printStackTrace();
}
Now simple query your response handler i.e. response in this case.
Don't forget to add INTERNET permission in your androidManifest.xml
Hope this helps!
Use a HTTP client class, and format your URL via a specific URI constructor. Create a HTTP post, optionally set the entity, headers, etc, execute the post via the client, receive a HTTP response, pull the entity out of the response and process it.
EDIT for example:
HttpClient httpclient = new DefaultHttpClient();
URI uri = new URI("http",
"www.google.com", // connecting to IP
"subpath", // and the "path" of what we want
"a=5&b=6", // query
null); // no fragment
HttpPost httppost = new HttpPost(uri.toASCIIString);
// have a body ?
// post.setEntity(new StringEntity(JSONObj.toString()));
// post.setHeader("Content-type", "application/json");
HttpResponse response = httpClient.execute(post);
int statusCode = response.getStatusLine().getStatusCode();
HttpEntity entity = response.getEntity();
Reader r = new InputStreamReader(entity.getContent());
// Do something with the data in the reader.
I am really in pain right now please help me solve this issue.
I've previously also tried to make the http request to my localhost and it all works fine but right now it is not working and I don't know why.
I am trying to make the request from the following code.
HttpClient httpclient = new DefaultHttpClient();
String result="";
try
{
HttpPost httppost = new HttpPost("http://[ip]/php/untitled.php");
List<NameValuePair> nameValuePairs = new ArrayList<NameValuePair>(3);
nameValuePairs.add(new BasicNameValuePair("email",this.userEmail));
nameValuePairs.add(new BasicNameValuePair("pwd",this.userpassword));
httppost.setEntity(new UrlEncodedFormEntity(nameValuePairs));
HttpResponse response = httpclient.execute(httppost);
HttpEntity entity=response.getEntity();
if(entity!=null)
{
InputStream inputStream=entity.getContent();
result= convertStreamToString(inputStream);
}
}
catch (ClientProtocolException e)
{
Log.e("errorhai",e.getMessage());
}
catch (IOException e)
{
Log.e("errorhai",e.getMessage());
}
return result;
I've also added the internet permission but still it keeps saying
Connect to [ip] timed out.
When I enter the url in my browser it works fine but it is not working here.Please tell me what can be the causes of this problem ?
you can set the time out parameter to handle such type of exception :
HttpParams httpParameters = new BasicHttpParams();
/* Set the timeout in milliseconds until a connection is established.
The default value is zero, that means the timeout is not used.*/
int timeoutConnection = 60*1000*1;
HttpConnectionParams.setConnectionTimeout(httpParameters, timeoutConnection);
/* Set the default socket timeout (SO_TIMEOUT)
in milliseconds which is the timeout for waiting for data. */
int timeoutSocket = 60*1000*1;
HttpConnectionParams.setSoTimeout(httpParameters, timeoutSocket);
HttpClient client = new DefaultHttpClient(httpParameters);
//HttpClient client = new DefaultHttpClient();
HttpResponse httpResponse;
try {
/** Finally, we send our request using HTTP. This is the synchronous
long operation that we need to run on this thread. */
httpResponse = client.execute(request);
/*int responseCode = httpResponse.getStatusLine().getStatusCode();
String message = httpResponse.getStatusLine().getReasonPhrase();*/
HttpEntity entity = httpResponse.getEntity();
if (entity != null) {
InputStream instream = entity.getContent();
String res = convertStreamToString(instream);
MLog.v("HTTP RESPONSE : ", "Res :-"+res);
if(!res.trim().equalsIgnoreCase("[]")){
response.setResult(res);
response.setSuccess(true);
}else{
response.setSuccess(false);
response.setErrorMessage(AppConstant.RECORD_NOT_FOUND);
}
/** Closing the input stream will trigger connection release */
instream.close();
}else{
response.setSuccess(false);
response.setErrorMessage(AppConstant.NETWORK_ERROR);
}
}
catch (Exception e) {
//client.getConnectionManager().shutdown();
e.printStackTrace();
response.setSuccess(false);
response.setErrorMessage(AppConstant.NETWORK_ERROR);
}
//you can again try to send request , if your response is not sucess.
//retryHttpRequestIfNotSucess();
your problem might be related to the login. Is your script expecting a preemptive authetification? Do you have a error page for a failed login?
For requesting a page with preemptive http basic authentication i'm using the following code that is working. Have a try, if its working for you too.
DefaultHttpClient httpclient = null;
HttpParams params = new BasicHttpParams();
HttpResponse response = null;
HttpEntity entity = null;
// Set connection parameter
params.setParameter(HttpProtocolParams.USE_EXPECT_CONTINUE, false);
HttpProtocolParams.setVersion(params, HttpVersion.HTTP_1_1);
HttpProtocolParams.setContentCharset(params, HTTP.UTF_8);
httpclient = new DefaultHttpClient(params);
// Create a post statement
HttpPost httppost = new HttpPost(Constants.urlLogin);
httppost.getParams().setParameter(ClientPNames.COOKIE_POLICY, CookiePolicy.RFC_2965);
httppost.getParams().setParameter("http.protocol.single-cookie-header", true);
httppost.getParams().setParameter(ClientPNames.COOKIE_POLICY, CookiePolicy.BROWSER_COMPATIBILITY);
List<NameValuePair> nvps = new ArrayList<NameValuePair>();
nvps.add(new BasicNameValuePair("login_name", this.username));
nvps.add(new BasicNameValuePair("login_passwd", this.userpassword));
httppost.setEntity(new UrlEncodedFormEntity(nvps, HTTP.UTF_8));
response = httpclient.execute(httppost);
entity = response.getEntity();
int statusCode = response.getStatusLine().getStatusCode();
String loadedContent = null;
if (entity != null)
{
loadedContent = EntityUtils.toString(entity, HTTP.UTF_8);
// loadedContent =
// Helper.convertStreamToString(entity.getContent());
entity.consumeContent();
}
if (statusCode != (HttpStatus.SC_OK))
{
throw new ServerCommunicationErrorException();
} else if (!loadedContent.contains("Logout"))
{
// Login failed
throw new LoginFailedException();
}
As you can see, i get a "not logged in" page as result, if the login fails to determine the login process. Further more i set some parameters, that might be also interesting for you. You can look here for more information on parameters.
What I want I want to send a video from my SDcard to a server. I also want to send some parameters/value with it.
I have tried I have tried the following code:
public String SendToServer(String aUrl,File aFile)
{
HttpClient httpClient = new DefaultHttpClient();
HttpPost httpPost = new HttpPost(aUrl);
try
{
MultipartEntity entity = new MultipartEntity(HttpMultipartMode.BROWSER_COMPATIBLE);
entity.addPart("file", new FileBody(aFile));
entity.addPart("video[title]", new StringBody("testVideo"));
entity.addPart("video[type]", new StringBody("1"));
httpPost.setEntity(entity);
HttpContext localContext = new BasicHttpContext();
// Bind custom cookie store to the local context
localContext.setAttribute(ClientContext.COOKIE_STORE, Globals.sessionCookie);
HttpResponse response = httpClient.execute(httpPost, localContext);
HttpEntity resEntity = response.getEntity();
String Response = "";
if (response != null)
{
Response = EntityUtils.toString(resEntity);
}
return Response;
}
catch (IOException e)
{
e.printStackTrace();
}
return "Exception";
}
What is the problem When I run this code, I get stuck at this line
HttpResponse response = httpClient.execute(httpPost, localContext);
I get no exception, no response nothing at all. Can anyone please guide me, what is the problem in here?
The above code in my question was perfect, but I had the network problem. My device was connected to a hotspot(Connectify Software). When I connected to the original network, this code worked perfect.
I recommend you people to never trust a hotspot for this kind of functionality.
try using this way if want to send as content or esle I will upload the project by tonight
HttpClient httpclient = new DefaultHttpClient();
HttpPost httppost = new HttpPost(url);
InputStreamEntity reqEntity = new InputStreamEntity(new FileInputStream(filePath), -1);
reqEntity.setContentType("binary/octet-stream");
reqEntity.setChunked(true); // Send in multiple parts if needed
httppost.setEntity(reqEntity);
HttpResponse response = httpclient.execute(httppost);