Develop Reference

HttpPost Posting Complex JSONObject in the Body of the Request

I was wondering, using HttpClient and HttpPOST is there a way to post a complex JSON object as the body of the request? I did see an example of posting a simple key/value pair in the body (as shown below from this link: Http Post With Body):
HttpClient client= new DefaultHttpClient();
HttpPost request = new HttpPost("www.example.com");
List<NameValuePair> pairs = new ArrayList<NameValuePair>();
pairs.add(new BasicNameValuePair("paramName", "paramValue"));
request.setEntity(new UrlEncodedFormEntity(pairs ));
HttpResponse resp = client.execute(request);
However, I would need to post something like the following:
{
"value":
{
"id": "12345",
"type": "weird",
}
}
Is there a way for me to accomplish this?
ADDITIONAL INFORMATION
Doing the following:
HttpClient client= new DefaultHttpClient();
HttpPost request = new HttpPost("www.example.com");
String json = "{\"value\": {\"id\": \"12345\",\"type\": \"weird\"}}";
StringEntity entity = new StringEntity(json);
request.setEntity(entity);
request.setHeader("Content-type", "application/json");
HttpResponse resp = client.execute(request);
results in an empty body on the server... hence i get a 400.
Thanks in advance!

HttpPost.setEntity() accepts StringEntity which extends AbstractHttpEntity. you can set it with any valid String of your choice:
CloseableHttpClient httpClient = HttpClients.createDefault();
HttpPost request = new HttpPost("www.example.com");
String json = "{\"value\": {\"id\": \"12345\",\"type\": \"weird\"}}";
StringEntity entity = new StringEntity(json);
entity.setContentType(ContentType.APPLICATION_JSON.getMimeType());
request.setEntity(entity);
request.setHeader("Content-type", "application/json");
HttpResponse resp = client.execute(request);

This worked for me!
HttpClient client= new DefaultHttpClient();
HttpPost request = new HttpPost("www.example.com");
String json = "{\"value\": {\"id\": \"12345\",\"type\": \"weird\"}}";
StringEntity entity = new StringEntity(json);
entity.setContentType(ContentType.APPLICATION_JSON.getMimeType());
request.setEntity(entity);
request.setHeader("Content-type", "application/json");
HttpResponse resp = client.execute(request);

Is my HTTPClient connection leaking sockets?

I have an app deployed on google app engine that uses the Apache HTTPClient. Recently as the app is getting more traffic, I have started running into exceptions where the sockets quota has been exceeded. The exception is
com.google.apphosting.api.ApiProxy$OverQuotaException: The API call remote_socket.SetSocketOptions() required more quota than is available.
I reached out to the App Engine team and they wanted me to check if my app was leaking sockets.
CloseableHttpClient httpclient = HttpClients.createDefault();
HttpPost httpPost = new HttpPost("http://www.spark.com");
List <NameValuePair> nvps = new ArrayList <NameValuePair>();
nvps.add(new BasicNameValuePair("param1", "val1"));
nvps.add(new BasicNameValuePair("param2", "val2"));
httpPost.setEntity(new UrlEncodedFormEntity(nvps));
CloseableHttpResponse response = httpclient.execute(httpPost);
Document doc = null;
try {
HttpEntity entity = response.getEntity();
doc = Jsoup.parse(entity.getContent(), "UTF-8", "");
EntityUtils.consume(entity);
} finally {
response.close();
httpclient.close();
}
This is what my http connection code looks like. Am I doing something wrong which may be causing the sockets to leak? Can I do something better?

this work for me :
HttpParams httpParameters = new BasicHttpParams();
HttpProtocolParams.setContentCharset(httpParameters, HTTP.UTF_8);
HttpProtocolParams.setHttpElementCharset(httpParameters, HTTP.UTF_8);
HttpClient httpclient = new DefaultHttpClient(httpParameters);
// HttpPost httppost = new HttpPost("http://rafsanjan.uni-azad.my.com/json/darkhasr.php?shdaneshjo="+value_id+"&moavenat="+value_seaction+"&darkhast="+zir_item+"&startdate=test&tozih="+ value_descration); //???
try {
URIBuilder builder = new URIBuilder();
builder.setScheme("http")
.setHost("app.my.ac.com")
.setPort(1180)
.setPath("/json2/darkhasr.php")
.addParameter("shdaneshjo", value_id)
.addParameter("moavenat", value_seaction)
.addParameter("darkhast", value_item)
.addParameter("startdatet", "0")
.addParameter("tozih", value_descration)
.build();
// .fragment("section-name");
String myUrl = builder.toString();
Log.d("url=>",myUrl);
HttpPost httppost = new HttpPost(myUrl);
ArrayList<NameValuePair> nameValuePairs = new ArrayList<NameValuePair>(8);
//nameValuePairs.add(new BasicNameValuePair("name", name));
httppost.setEntity(new UrlEncodedFormEntity(nameValuePairs,"UTF-8"));
HttpResponse response = httpclient.execute(httppost);
HttpEntity resEntity = response.getEntity();
Log.d("RESPONSE",EntityUtils.toString(resEntity));
}
catch(Exception e)
{
Log.e("log_tag", "Error: "+e.toString());
}

android DefaultHttpClient POST to service wcf .svc

I hava this code
public static String methodPost(final String url, final String dataToPost) throws ClientProtocolException,
IOException, IllegalStateException, Exception {
DefaultHttpClient httpClient = new DefaultHttpClient();
HttpPost httpPost = new HttpPost(url);
StringEntity se = new StringEntity(dataToPost);
se.setContentEncoding("UTF-8");
se.setContentType(new BasicHeader(HTTP.CONTENT_TYPE, "application/json"));
httpPost.setEntity(se);
HttpResponse httpResponse = httpClient.execute(httpPost);
HttpEntity httpEntity = httpResponse.getEntity();
return streamToString(httpEntity.getContent());
}
I post this in IPHONE and work perfectly:
#"{\"var1\":\"Value1\"}{\"var2\":[{\"item1\":\"1\"},{\"item1\":\"Value2\"}]}"
when I post also in ANDROID.
Response return HTTP 1 400
example:
methodPost(url, "{\"var1\":\"Value1\"}{\"var2\":[{\"item1\":\"1\"},{\"item1\":\"Value2\"}]}");
but, I post this
methodPost(url, "{\"var1\":\"Value1\"}{\"var2\":\"Value2\"}");
this work perfectly only when I use "[ ]" i have some error
sorry for my english :)

Http cookie store in Android

I am developing an Android client for the site with authorization. I have a post method. Example my code:
public void run() {
handler.sendMessage(Message.obtain(handler, HttpConnection.DID_START));
httpClient = new DefaultHttpClient();
HttpConnectionParams.setSoTimeout(httpClient.getParams(), 25000);
HttpResponse response = null;
try{
switch (method){
case POST:
HttpPost httpPost = new HttpPost(url);
httpPost.setHeaders(headers);
if (data != null) httpPost.setEntity(new StringEntity(data));
response = httpClient.execute(httpPost);
break;
}
processEntity(response);
}catch(Exception e){
handler.sendMessage(Message.obtain(handler, HttpConnection.DID_ERROR, e));
}
ConnectionManager.getInstanse().didComplete(this);
}
How to keep cookies?

You get your cookies from HttpResponse response:
Header[] mCookies = response.getHeaders("cookie");
and add them to your next request:
HttpClient httpClient = new DefaultHttpClient();
//parse name/value from mCookies[0]. If you have more than one cookie, a for cycle is needed.
CookieStore cookieStore = new BasicCookieStore();
Cookie cookie = new BasicClientCookie("name", "value");
cookieStore.addCookie(cookie);
HttpContext localContext = new BasicHttpContext();
localContext.setAttribute(ClientContext.COOKIE_STORE, cookieStore);
HttpGet httpGet = new HttpGet("http://www.domain.com/");
HttpResponse response = httpClient.execute(httpGet, localContext);

Android post request

I have javascript code that i am trying to mimic in an android application:
Here is the javascript code:
text = '{"username":"Hello","password":"World"}';
x.open("POST", url);
x.setRequestHeader("Content-type", "application/json");
x.setRequestHeader("Content-length", text.length);
x.send(text);
and here is what i have so far for the android application(doesnt work):
HttpClient httpclient = new DefaultHttpClient();
HttpPost httppost = new HttpPost(url);
httppost.setHeader("Content-type", "application/json");
String text = "\"{\"username\":\"Hello\",\"password\":\"World\"}\"";
httppost.setHeader("Content-length",Integer.toString(text.length()));
httppost.setEntity(new StringEntity(text));
HttpResponse response = httpclient.execute(httppost);
when i try to debug this code on eclipse the emulater keeps running while the debugger hangs. Thanks!
Note: its hanging on httpclient.execute(httppost)

Here is the code I use for Android post requests:
HttpClient client = new DefaultHttpClient();
HttpPost post = new HttpPost("fullurl");
List<NameValuePair> pairs = new ArrayList<NameValuePair>();
pairs.add(new BasicNameValuePair("parameter", "variable");
post.setEntity (new UrlEncodedFormEntity(pairs));
HttpResponse response = client.execute(post);
...and so on.

Try it out:
HttpClient httpclient = new DefaultHttpClient();
HttpPost httppost = new HttpPost(url);
JSONObject json = new JSONObject();
try{
json.put("username", "Hello");
json.put("password", "World");
StringEntity se = new StringEntity(json.toString());
se.setContentEncoding(new BasicHeader(HTTP.CONTENT_TYPE, "application/json"));
post.setEntity(se);
HttpResponse response = httpclient.execute(httppost);
/*Checking response */
if(response!=null){
InputStream in = response.getEntity().getContent(); //Get the data in the entity
}
catch(Exception e){
e.printStackTrace();
}

Did you mean to set your HttpPost path to just path. I think your hanging because you haven't given the HttpPost a valid URL. You'll need to modify this line:
HttpPost httppost = new HttpPost("path");
to something like
HttpPost httppost = new HttpPost("actual/url/path");

You have extra speech marks within the start and end of your text string compared to the JS version?

// Create a new HttpClient and Post Header
HttpClient httpclient = new DefaultHttpClient();
HttpPost httppost = new HttpPost(StringUrl);
try {
// Add your data
List<NameValuePair> nameValuePairs = new ArrayList<NameValuePair>(2);
nameValuePairs.add(new BasicNameValuePair("id", "12345"));
nameValuePairs.add(new BasicNameValuePair("stringdata", "Hi"));
httppost.setEntity(new UrlEncodedFormEntity(nameValuePairs));
// Execute HTTP Post Request
HttpResponse response = httpclient.execute(httppost);
System.out.println("rep => " + response);
} catch (IOException e) {
System.out.println(e);
}
}