We Keep Coding

Convert cURL to Java for SOAP Call

Im implementing a SOAP web service and it is working with a cURL call. I implemented following this tutorial. The service is working with the following command:
curl --header "content-type: text/xml" -d #request.xml http://localhost:8080/ws
But of course this action has to be free from command prompt and be able to be called whenever necessary, so I want to relate this service to an action when a method is called for example.
So far I found from internet
String url = "http://localhost:8080/ws";
URL obj = new URL(url);
HttpURLConnection conn = (HttpURLConnection) obj.openConnection();
conn.setRequestProperty("Content-Type", "text/xml");
conn.setDoOutput(true);
conn.setRequestMethod("POST");
I assume it should be a POST method but how do I add the "request.xml" and "--header"? What command will finalize the cURL call? Or am I doing this totally wrong and the long way, is there an easier way?
PS: I already have a web service running and Im using Eclipse Oxygen.

Add below lines to your code at the end, it will do the JOB.
OutputStream wr = new DataOutputStream(conn.getOutputStream());
BufferedReader br = new BufferedReader(new FileReader(new File("request.xml")));
//reading file and writing to URL
System.out.println("Request:-");
String st;
while ((st = br.readLine()) != null) {
System.out.print(st);
wr.write(st.getBytes());
}
//Flush&close the writing to URL.
wr.flush();
wr.close();
BufferedReader in = new BufferedReader(new InputStreamReader(conn.getInputStream()));
String output;
StringBuffer response = new StringBuffer();
while ((output = in.readLine()) != null) {
response.append(output);
}
in.close();
// printing result from response
System.out.println("Response:-" + response.toString());

While HttpURLConnection can be used for this purpose, SOAPConnection was designed for situations where there is not a WSDL.
The code below is much simpler:
SOAPConnection conn = SOAPConnectionFactory.newInstance().createConnection();
SOAPMessage msg =
MessageFactory.newInstance()
.createMessage(null, Files.newInputStream(Paths.get("request.xml")));
SOAPMessage resp = conn.call(msg, "http://localhost:8080/ws");
resp.writeTo(System.out);

HTTP URL connection response

I am trying to hit the URL and get the response from my Java code.
I am using URLConnection to get this response. And writing this response in html file.
When opening this html in browser after executing the java class, I am getting only google home page and not with the results.
Whats wrong with my code, my code here,
FileWriter fWriter = null;
BufferedWriter writer = null;
URL url = new URL("https://www.google.co.in/?gfe_rd=cr&ei=aS-BVpPGDOiK8Qea4aKIAw&gws_rd=ssl#q=google+post+request+from+java");
byte[] encodedBytes = Base64.encodeBase64("root:pass".getBytes());
String encoding = new String(encodedBytes);
HttpURLConnection connection = (HttpURLConnection) url.openConnection();
connection.setRequestMethod("GET");
connection.setRequestProperty("User-Agent", "Mozilla/5.0");
connection.setRequestProperty("Accept-Charset", "UTF-8");
connection.setDoInput(true);
connection.setRequestProperty("Authorization", "Basic " + encoding);
connection.connect();
InputStream content = (InputStream) connection.getInputStream();
BufferedReader in = new BufferedReader(new InputStreamReader(content));
String line;
try {
fWriter = new FileWriter(new File("f:\\fileName.html"));
writer = new BufferedWriter(fWriter);
while ((line = in.readLine()) != null) {
String s = line.toString();
writer.write(s);
}
writer.close();
} catch (Exception e) {
e.printStackTrace();
}
}
Same code works couple of days back, but not now.

The reason is that this url does not return search results it self. You have to understand google's working process to understand it. Open this url in your browser and view its source. You will only see lots of javascript there.
Actually, in a short summary, google uses Ajax requests to process search queries.
To perform required task you either have to use a headless browser (the hard way) which can execute javascript/ajax OR better use google search api as directed by anand.

This method of searching is not advised is supposed to fail, you must use google search APIs for this kind of work.
Note: Google uses some redirection and uses token, so even if you will find a clever way to handle it, it is ought to fail in long run.
Edit:
This is a sample of how using Google search APIs you can get your work done in reliable way; please do refer to the source for more information.
public static void main(String[] args) throws Exception {
String google = "http://ajax.googleapis.com/ajax/services/search/web?v=1.0&q=";
String search = "stackoverflow";
String charset = "UTF-8";
URL url = new URL(google + URLEncoder.encode(search, charset));
Reader reader = new InputStreamReader(url.openStream(), charset);
GoogleResults results = new Gson().fromJson(reader, GoogleResults.class);
// Show title and URL of 1st result.
System.out.println(results.getResponseData().getResults().get(0).getTitle());
System.out.println(results.getResponseData().getResults().get(0).getUrl());
}

how to do an online xml request in java to a url that require authentication

I want to do an online xml request in java but the server responds with 401 error that means that there is an authentication that is need to access the server. I have the certfile.cer that i can use to do the authentication but i dont know how to load it in java.How can I achieve this in java? Here is part of my code.
StringBuilder answer = new StringBuilder();
URL url = new URL("www.myurl.com");
URLConnection conn = url.openConnection();
OutputStreamWriter writer = new OutputStreamWriter(conn.getOutputStream());
writer.write(xml);
writer.flush();
String line;
while ((line = reader.readLine()) != null)
{
answer.append(line);
}

Send HTTP Post Payload with Java

I'm trying to connect to the grooveshark API, this is the http request
POST URL
http://api.grooveshark.com/ws3.php?sig=f699614eba23b4b528cb830305a9fc77
POST payload
{"method":'addUserFavoriteSong",'parameters":{"songID":30547543},"header":
{"wsKey":'key","sessionID":'df8fec35811a6b240808563d9f72fa2'}}
My question is how can I send this request via Java?

Basically, you can do it with the standard Java API. Check out URL, URLConnection, and maybe HttpURLConnection. They are in package java.net.
As to the API specific signature, try sStringToHMACMD5 found in here.
And remember to CHANGE YOUR API KEY, this is very IMPORTANT, since everyone knows it know.
String payload = "{\"method\": \"addUserFavoriteSong\", ....}";
String key = ""; // Your api key.
String sig = sStringToHMACMD5(payload, key);
URL url = new URL("http://api.grooveshark.com/ws3.php?sig=" + sig);
URLConnection connection = url.openConnection();
connection.setDoInput(true);
connection.setDoOutput(true);
connection.connect();
OutputStream os = connection.getOutputStream();
PrintWriter pw = new PrintWriter(new OutputStreamWriter(os));
pw.write(payload);
pw.close();
InputStream is = connection.getInputStream();
BufferedReader reader = new BufferedReader(new InputStreamReader(is));
String line = null;
StringBuffer sb = new StringBuffer();
while ((line = reader.readLine()) != null) {
sb.append(line);
}
is.close();
String response = sb.toString();

You could look into the Commons HttpClient package.
It is fairly straight forward to create POST's, specifically you could copy the code found here: http://hc.apache.org/httpclient-3.x/methods/post.html:
PostMethod post = new PostMethod( "http://api.grooveshark.com/ws3.php?sig=f699614eba23b4b528cb830305a9fc77" );
NameValuePair[] data = {
new NameValuePair( "method", "addUserFavoriteSong..." ),
...
};
post.setRequestBody(data);
InputStream in = post.getResponseBodyAsStream();
...
Cheers,

how to make http get request in Android

I am new to android.So i can any one sho me how to make a http get request such as
GET /photos?size=original&file=vacation.jpg HTTP/1.1
Host: photos.example.net:80
Authorization: OAuth realm="http://photos.example.net/photos",
oauth_consumer_key="dpf43f3p2l4k3l03",
oauth_token="nnch734d00sl2jdk",
oauth_nonce="kllo9940pd9333jh",
oauth_timestamp="1191242096",
oauth_signature_method="HMAC-SHA1",
oauth_version="1.0",
oauth_signature="tR3%2BTy81lMeYAr%2FFid0kMTYa%2FWM%3D"
in android(java)?

You're gonna want to get familiar with InputStreams and OutputStreams in Android, if you've done this in regular java before then its essentially the same thing. You need to open a connection with the request property as "GET", you then write your parameters to the output stream and read the response through an input stream. You can see this in my code below:
try {
URL url = null;
String response = null;
String parameters = "param1=value1&param2=value2";
url = new URL("http://www.somedomain.com/sendGetData.php");
//create the connection
connection = (HttpURLConnection) url.openConnection();
connection.setDoOutput(true);
connection.setRequestProperty("Content-Type",
"application/x-www-form-urlencoded");
//set the request method to GET
connection.setRequestMethod("GET");
//get the output stream from the connection you created
request = new OutputStreamWriter(connection.getOutputStream());
//write your data to the ouputstream
request.write(parameters);
request.flush();
request.close();
String line = "";
//create your inputsream
InputStreamReader isr = new InputStreamReader(
connection.getInputStream());
//read in the data from input stream, this can be done a variety of ways
BufferedReader reader = new BufferedReader(isr);
StringBuilder sb = new StringBuilder();
while ((line = reader.readLine()) != null) {
sb.append(line + "\n");
}
//get the string version of the response data
response = sb.toString();
//do what you want with the data now
//always remember to close your input and output streams
isr.close();
reader.close();
} catch (IOException e) {
Log.e("HTTP GET:", e.toString());
}