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Getting token from the URL in Java

In my project requirement, I was given a URL http://abc.grp.auth where it is accessible only in abc network. Am hitting this URL from browser and able to view the token in below format.
{"token" : "eqwqkldsdkldflanflna$%$!##"}
I want to get this token in java code within abc network as below.
URL obj = new URL(url);
HttpURLConnection con = (HttpURLConnection) obj.openConnection();
But this code is giving 401 exception. This URL is taking the windows login, validating and sending the token. How can I achieve this in Java.
Thanks in Advance.

If there is used some kind of Basic authentication you can try to set special request header. Like this:
HttpGet httpget = new HttpGet(uri);
String encoding = Base64.encode(usr + ":" + psw);
httpget.setHeader("Authorization", "Basic " + encoding);

Posting to REST api using Java, specifically Android

I'm posting to the Wufoo api inside of an Android app and I am hitting a bit of a snag. My data does not seem to be formatting in a way that the server likes (or there is some other issue). Here is my code (note authkey and authpass are placeholders in the exmaple):
HttpClient httpclient = new DefaultHttpClient();
HttpPost httpPost = new HttpPost(url);
String json = "";
JSONObject jsonObject = new JSONObject();
jsonObject.accumulate("Field17", "Some Value");
json = jsonObject.toString();
StringEntity postData = new StringEntity(json, "UTF8");
httpPost.setEntity(postData);
String authorizationString = "Basic " + Base64.encodeToString(
("authkey" + ":" + "authpass").getBytes(),
Base64.NO_WRAP);
httpPost.setHeader("Content-type", "application/json");
httpPost.setHeader("Authorization", authorizationString);
HttpResponse httpResponse = httpclient.execute(httpPost);
inputStream = httpResponse.getEntity().getContent();
The response I get back from the server looks like this:
{"Success":0,"ErrorText":"Errors have been <b>highlighted<\/b> below.","FieldErrors":
[{"ID":"Field17","ErrorText":"This field is required. Please enter a value."}]}
This is the response for a failure (obviously) which leads me to believe I'm doing the authentication correctly, and that it just doesn't like my JSON string, I've looked through the API docs which are located here:
http://www.wufoo.com/docs/api/v3/entries/post/
and by all accounts this should work? Any suggestions?

I would start by looking at this line:
StringEntity postData = new StringEntity(json, "UTF8");
It's "UTF-8", not "UTF8".
Note: I would suggest you using the HTTP.UTF_8 constant in order to avoid this kind of problem again.
StringEntity postData = new StringEntity(json, HTTP.UTF_8);

The Field17 may be of specific field type other than string.

After reading the document, I think you missed the point. The server accepted fields parameter from http post, not from a json string.
Your problem looks like this one.
So your request should like this:
ArrayList<NameValuePair> postParameters = new ArrayList<NameValuePair>();
postParameters.add(new BasicNameValuePair("Field17", "Some Value"));
httpPost .setEntity(new UrlEncodedFormEntity(postParameters));
Hope this can help.

I actually figured this out, this isn't a problem with the code anyone here gave me, it's the fact that I was sending the wrong header info. This must be a quirk of the Wufoo API.
If I use the BasicNameValuePair objects like what was suggestion by R4j and I remove the line
httpPost.setHeader("Content-type", "application/json");
everything works perfectly!
Thanks for all the help and I hope this helps anyone who is having trouble with the Wufoo API and Java.

Space between http url in java

This code working fine
HttpClient client = new DefaultHttpClient();
HttpGet request = new HttpGet("http://localhost:8090/Servlet/ServletFirst?to=1234&from=567&text=testtest");
If i use space between parameter value. It throws exception
HttpClient client = new DefaultHttpClient();
HttpGet request = new HttpGet("http://localhost:8090/Servlet/ServletFirst?to=1234&from=567&textParam=test test");
space between test test throws error. How to resolve?

You must URL encode the parameter in your URL; use %20 instead of the space.
HttpGet request = new HttpGet("http://localhost:8090/Servlet/ServletFirst?to=1234&from=567&textParam=test%20test");
Java has a class to do do URL encoding for you, URLEncoder:
String param = "test test";
String enc = URLEncoder.encode(param, "UTF-8");
String url = "http://...&textParam=" + enc;

Just use a %20 to represent a space.
This is all part of the URL encoding: http://www.w3schools.com/tags/ref_urlencode.asp
So you would want:
HttpGet request = new HttpGet("http://localhost:8090/Servlet/ServletFirst?to=1234&from=567&text=test%20test");

Use
URLEncoder.encode("test test","UTF-8")
So change your code to
HttpGet request = new HttpGet("http://localhost:8090/Servlet/ServletFirst?to=1234&from=567&textParam="+URLEncoder.encode("test test","UTF-8"));
Note Don't Encode Whole url
URLEncoder.encode("http://...test"); // its Wrong because it will also encode the // in http://

Use %20 to indicate space in the URL, as space is not an allowed character. See the Wikipedia entry for character data in a URL.
HttpClient client = new DefaultHttpClient();
HttpGet request = new HttpGet(
"http://localhost:8090/Servlet/ServletFirst?to=1234&from=567&textParam=test%20test");

URL Encoding with httpclient

I have a list of URLs which I need to get the content of.
The URL is with special characters and thus needs to be encoded.
I use Commons HtpClient to get the content.
when I use:
GetMethod get = new GetMethod(url);
I get a " Invalid "illegal escape character" exception.
when I use
GetMethod get = new GetMethod();
get.setURI(new URI(url.toString(), false, "UTF-8"));
I get 404 when trying to get the page, because a space is turned to %2520 instead of just %20.
I've seen many posts about this problem, and most of them advice to build the URI part by part. The problem is that it's a given list of URLs, not a one that I can handle manually.
Any other solution for this problem?
thanks.

What if you create a new URL object from it's string like URL urlObject = new URL(url), then do urlObject.getQuery() and urlObject.getPath() to split it right, parse the Query Params into a List or a Map or something and do something like:
EDIT: I just found out that HttpClient Library has a URLEncodedUtils.parse() method which you can use easily with the code provided below. I'll edit it to fit, however is untested.
With Apache HttpClient it would be something like:
URI urlObject = new URI(url,"UTF-8");
HttpClient httpclient = new DefaultHttpClient();
List<NameValuePair> formparams = URLEncodedUtils.parse(urlObject,"UTF-8");
UrlEncodedFormEntity entity;
entity = new UrlEncodedFormEntity(formparams);
HttpPost httppost = new HttpPost(urlObject.getPath());
httppost.setEntity(entity);
httppost.addHeader("Content-Type","application/x-www-form-urlencoded");
HttpResponse response = httpclient.execute(httppost);
HttpEntity entity2 = response.getEntity();
With Java URLConnection it would be something like:
// Iterate over query params from urlObject.getQuery() like
while(en.hasMoreElements()){
String paramName = (String)en.nextElement(); // Iterator over yourListOfKeys
String paramValue = yourMapOfValues.get(paramName); // replace yourMapOfNameValues
str = str + "&" + paramName + "=" + URLEncoder.encode(paramValue);
}
try{
URL u = new URL(urlObject.getPath()); //here's the url path from your urlObject
URLConnection uc = u.openConnection();
uc.setDoOutput(true);
uc.setRequestProperty("Content-Type","application/x-www-form-urlencoded");
PrintWriter pw = new PrintWriter(uc.getOutputStream());
pw.println(str);
pw.close();
BufferedReader in = new BufferedReader(new
InputStreamReader(uc.getInputStream()));
String res = in.readLine();
in.close();
// ...
}

If you need to manipulate with request URIs it is strongly advisable to use URIBuilder shipped with Apache HttpClient.

try it out
GetMethod get = new GetMethod(url.replace(" ","%20")).toASCIIString());

Please use the URLEncoder class.
I used it in an exact scenario and it worked just fine for me.
What I did is to use the URL class, to get the part that comes after the host
(for example - at www.bla.com/mystuff/bla.jpg this would be "mystuff/bla.jpg" - you should URLEncode only this part, and then consturct the URL again.
For example, if the orignal string is "http://www.bla.com/mystuff/bla foo.jpg" then:
Encode - "mystuff/bla foo.jpg" and get "mystuff/bla%20foo.jpg" and then attach this to the host and protocol parts:
"http://www.bla.com/mystuff/bla%20foo.jpg"
I hope this helps

How to send a JSONObject to a REST service?

Retrieving data from the REST Server works well, but if I want to post an object it doesn't work:
public static void postJSONObject(int store_type, FavoriteItem favorite, String token, String objectName) {
String url = "";
switch(store_type) {
case STORE_PROJECT:
url = URL_STORE_PROJECT_PART1 + token + URL_STORE_PROJECT_PART2;
//data = favorite.getAsJSONObject();
break;
}
HttpClient httpClient = new DefaultHttpClient();
HttpPost postMethod = new HttpPost(url);
try {
HttpEntity entity = new StringEntity("{\"ID\":0,\"Name\":\"Mein Projekt10\"}");
postMethod.setEntity(entity);
HttpResponse response = httpClient.execute(postMethod);
Log.i("JSONStore", "Post request, to URL: " + url);
System.out.println("Status code: " + response.getStatusLine().getStatusCode());
} catch (ClientProtocolException e) {
I always get a 400 Error Code. Does anybody know whats wrong?
I have working C# code, but I can't convert:
System.Net.WebRequest wr = System.Net.HttpWebRequest.Create("http://localhost:51273/WSUser.svc/pak3omxtEuLrzHSUSbQP/project");
wr.Method = "POST";
string data = "{\"ID\":1,\"Name\":\"Mein Projekt\"}";
byte [] d = UTF8Encoding.UTF8.GetBytes(data);
wr.ContentLength = d.Length;
wr.ContentType = "application/json";
wr.GetRequestStream().Write(d, 0, d.Length);
System.Net.WebResponse wresp = wr.GetResponse();
System.IO.StreamReader sr = new System.IO.StreamReader(wresp.GetResponseStream());
string line = sr.ReadToEnd();

Try setting the content type header:
postMethod.addRequestHeader("Content-Type", "application/json");
Btw, I strongly recommend Jersey. It has a REST client library which makes these kind of things much easier and more readable

Your C# is different than your Java, and not just in syntax.
Your C# sends an application/json entity to the server via HTTP POST. I'll leave it up to HTTP purists as to whether that's appropriate use of POST (vs. PUT).
Your Java creates a form, with a field of jsonString (whose value is the JSON), and sends an application/x-www-form-urlencoded entity to the server containing that form.

I would go right to the server err_log or equivelant error log. The server knows why it rejected your request. If you don't have access, set up your own test server and duplicate the issue there so you can review the logs =)