I am trying to pass parameters to a PHP Server using POST method in java but the response string I get is an error message on the line where the server tries to access option parameter at line:
Undefined index at line $option = $_POST["option"];
My code is as follows:
HttpURLConnection con = (HttpURLConnection)(new URL("http://--server-ip--")).openConnection();
con.setRequestMethod("POST");
con.setRequestProperty("User-Agent", "Mozilla/5.0");
con.setRequestProperty("Accept-Language", "en-US,en;q=0.5");
String urlParameters = "option=1&type=1&coord=-33.867,151.206";
con.setDoOutput(true);
DataOutputStream wr = new DataOutputStream(con.getOutputStream());
wr.writeBytes(urlParameters);
wr.flush();
wr.close();
con.connect();
Can anybody point out the mistake?
Related
I am writing a file into AWS S3 bucket using HTTPURLConnection. This connection's outputstream-write command works only if it is followed by getInputStream or getResponseCode. Please help me to understand this. Is it required to read responseCode?
URL endpointUrl = new URL("muURL");
HttpURLConnection connection = (HttpURLConnection) endpointUrl.openConnection();
connection.setRequestMethod("PUT");
connection.setRequestProperty("Authorization", authorization);
connection.setRequestProperty("x-amz-content-sha256", hashPayload);
connection.setRequestProperty("X-Amz-Date", myDate);
connection.setRequestProperty("Content-Type","application/octet-stream");
connection.setRequestProperty("Content-Length",contentLen);
//connection.setRequestProperty("Accept","*/*");
connection.setUseCaches(false);
//connection.setDoInput(true);
connection.setDoOutput(true);
DataOutputStream wr = new DataOutputStream(connection.getOutputStream());
wr.writeBytes(payload);
StringBuilder builder = new StringBuilder();
// If I comment this line which gets responseCode , then file is not written in S3.
builder.append(connection.getResponseCode());
wr.flush();
wr.close();
connection.disconnect();
I am expecting this code to work without getResponseCode line.
I am a newbie to HttpClient so not sure what's wrong I am doing. I am hitting one POST request through HttpUrlConnection. After sending the request when I check the logs it doesn't hit the entire request. My URL is https://www.example.com/product/pd/v1/gql when I check on the server, for URI, it shows v1/gql and give 400 error. while the same request works perfectly from Postman and advance rest client.
URL obj = new URL("https://www.example.com/product/pd/v1/gql/");
HttpURLConnection conn = (HttpURLConnection) obj.openConnection();
conn.setRequestMethod("POST");
conn.setRequestProperty("User-Agent", USER_AGENT);
conn.setDoOutput(true);
conn.setRequestProperty("Content-Type", "application/json");
conn.setRequestProperty("Cookie", "_bb_vid=djfhhf");
JSONObject val = new JSONObject(gqlValue2);
JSONObject jObj = new JSONObject();
jObj.put(gqlKey1, gqlValue1);
jObj.put(gqlKey2, val);
System.out.println(jObj);
OutputStreamWriter wr = new
OutputStreamWriter(conn.getOutputStream());
wr.write(jObj.toString());
wr.flush();
I'm trying to use java to log in to a website and then eventually retrieve the cookie in order to gain access to information on the site. It seems my post request is working but I am receiving a response code of 500. I was wondering if this is because I have formatted the post data incorrectly
When using the website it says the post is formatted as below
{userName: "dfh", password: "suyj"}
In my code I have used this
String urlParameters = "userName:dfh,Password:suyj";
con.setDoOutput(true);
DataOutputStream wr = new DataOutputStream(con.getOutputStream());
wr.writeBytes(urlParameters);
wr.flush();
wr.close();
Am I right in thinking this could be the issue, and if so how can I correct my post data format?
Below is my whole code
public class post {
public static void main(String[] args) throws IOException {
final String USER_AGENT = "Mozilla/5.0 (Windows NT 6.1; WOW64; rv:31.0) Gecko/20100101 Firefox/31.0";
String url = "website";
URL obj = new URL(url);
HttpsURLConnection con = (HttpsURLConnection) obj.openConnection();
//add reuqest header
con.setRequestMethod("POST");
con.setRequestProperty("User-Agent", USER_AGENT);
con.setRequestProperty("Accept", "application/json, text/javascript, */*; q=0.01");
con.setRequestProperty("Accept-Language", "en-US,en;q=0.5");
con.setRequestProperty("Accept-Encoding", "gzip, deflate");
con.setRequestProperty("Content-Type", "application/json; charset=UTF-8");
con.setRequestProperty("X-Requested-With", "XMLHttpRequest");
con.setRequestProperty("Referer", "https://extbasicph05.podc.sl.edst.ibm.com/FFAMobileRelay/");
con.setRequestProperty("Content-Length", "64");
con.setRequestProperty("Connection", "keep-alive");
con.setRequestProperty("Referer", "https://extbasicph05.podc.sl.edst.ibm.com/FFAMobileRelay/");
con.setRequestProperty("Cookies", "UnicaNIODID=KGew34gcvZ5-Y2NoBQr; mmid=-1658088866%7CKAAAAAr15Tc8FgsAAA%3D%3D; mmcore.pd=1484641984%7CejEyAAoBQvXlNzwWCxPPXGheAVibftSXgNJIDwAAADoOVvoDstFIAAAAAP//////////AAZEaXJlY3QBFgwIAAYABQAAAAAAAP+MAACAigAA/4wAAAIAxDEAAABFBVUW6QsA/////wHpCxoM//83AAAAAAAAAAOSfwAAusgAAJN/AAAgyAAAlH8AACHIAAABIYAAAAIAAADVNgAAAPcCB+70CwD/////AfQLHQz//60CAAEAAAAAAX+KAAAp2gAAAoCKAABAWBAAgYoAALMAAAAAAAABRQ%3D%3D; mmcore.srv=ldnvwcgus03; IBM_W3SSO_ACCESS=w3-03.sso.ibm.com; CoreID6=32675392371714128784599&ci=51040000|IBMTEST_51040000|IBMTESTW3_50200000|IBMTESTWWW; CoreM_State=75~-1~-1~-1~-1~3~3~5~3~3~7~7~|~~|~~|~~|~||||||~|~~|~~|~~|~~|~~|~~|~~|~; CoreM_State_Content=6~|~EE9EDB09923CD77F~|~0; PrefID=222-11978519; CSList=23427744/17540903,0/0,0/0,0/0,0/0; _ga=GA1.2.233924805.1433836377; mmcore.tst=0.169; ibmSurvey=1435758135373; 50200000_clogin=v=1&l=1435758136&e=1435760174616");
String urlParameters = "userName:dfh,Password:suyj";
// Send post request
con.setDoOutput(true);
DataOutputStream wr = new DataOutputStream(con.getOutputStream());
wr.writeBytes(urlParameters);
wr.flush();
wr.close();
int responseCode = con.getResponseCode();
System.out.println("\nSending 'POST' request to URL : " + url);
System.out.println("Post parameters : " + urlParameters);
System.out.println("Response Code : " + responseCode);
System.out.println(con.getErrorStream());
BufferedReader in = new BufferedReader(
new InputStreamReader(con.getInputStream()));
String inputLine;
StringBuffer response = new StringBuffer();
while ((inputLine = in.readLine()) != null) {
response.append(inputLine);
}
in.close();
//print result
System.out.println(response.toString());
}
}
You have already found out your problem. Just fix it...
Instead of String urlParameters = "userName:dfh,Password:suyj";, use
String urlParameters = "{userName:\"dfh\",Password:\"suyj\"}";
Though I believe your server expects JSON formatted post parameter. In that case you should use,
String urlParameters = "{\"userName\":\"dfh\",\"Password\":\"suyj\"}";
Or use a JSON parser to create the parameters.
I've got a webserver setup ready to receive images and I'd like to have a client in Java send the image along with two POST arguments, upon searching the web I only found ways to do this with Apache's API but I'd prefer to do this in vanilla Java.
Any help will be appreciated.
Something along the lines of...
String url = "https://asite.com";
URL obj = new URL(url);
HttpsURLConnection con = (HttpsURLConnection) obj.openConnection();
//add reuqest header
con.setRequestMethod("POST");
con.setRequestProperty("User-Agent", USER_AGENT);
con.setRequestProperty("Accept-Language", "en-US,en;q=0.5");
String urlParameters = "aparam=1&anotherparam=2";
// Send post request
con.setDoOutput(true);
DataOutputStream wr = new DataOutputStream(con.getOutputStream());
wr.writeBytes(urlParameters);
wr.flush();
wr.close();
int responseCode = con.getResponseCode();
BufferedReader in = new BufferedReader(
new InputStreamReader(con.getInputStream()));
String inputLine;
StringBuffer response = new StringBuffer();
while ((inputLine = in.readLine()) != null) {
response.append(inputLine);
}
in.close();
You can add more headers, and add more to the output stream as required.
I have some connection to url:
HttpURLConnection connection = (HttpURLConnection) url.openConnection();
How I can send post parameter to this url that php function: http://www.php.net/manual/en/reserved.variables.request.php can read it ? I try to according this question: Java - sending HTTP parameters via POST method easily but with no success. It just display empty array
php code:
print_r($_REQUEST,1)
java code:
HttpURLConnection connection = (HttpURLConnection) url.openConnection();
connection.setDoOutput(true);
connection.setDoInput(true);
connection.setInstanceFollowRedirects(false);
connection.setRequestMethod("POST");
connection.setRequestProperty("category_name", categoryName);
connection.setRequestProperty("complete", complete);
DataOutputStream wr = new DataOutputStream(connection.getOutputStream());
connection.getResponseCode();
wr.flush();
wr.close();
connection.disconnect();
You forgot to set the Content-Type header, and you need to write the category_name and complete values as a string to the stream.
Quoting the code from the post you mentioned:
String urlParameters = "param1=a¶m2=b¶m3=c";
String request = "http://example.com/index.php";
URL url = new URL(request);
HttpURLConnection connection = (HttpURLConnection) url.openConnection();
connection.setDoOutput(true);
connection.setDoInput(true);
connection.setInstanceFollowRedirects(false);
connection.setRequestMethod("POST");
connection.setRequestProperty("Content-Type", "application/x-www-form-urlencoded");
connection.setRequestProperty("charset", "utf-8");
connection.setRequestProperty("Content-Length", "" + Integer.toString(urlParameters.getBytes().length));
connection.setUseCaches (false);
DataOutputStream wr = new DataOutputStream(connection.getOutputStream ());
wr.writeBytes(urlParameters);
wr.flush();
wr.close();
connection.disconnect();
As you can see, he sets the headers (Content-Type, Charset and Content-Length) and then writes the POST data to the stream.
The POST data is just like the GET format: key-value pairs seperated by &, and the key and value are seperated by =.
As the Content-Type is set to www-form-urlencoded, you need to 'url encode' the key and value values. You can do this using the URLEncoder.encode method.
The urlParameters for your POST data would be:
String urlParameters = "category_name=" + URLEncoder.encode(categoryName) + "&complete=" + URLEncoder.encode(complete);