To anyone here who's got a snippet of Java code that successfully uses the API to place/cancel an order: could you share the code that you used to make a successful POST request? I've been writing a bot that accesses the API info via GET requests with no trouble, but I've been stymied with the POST requests. The Java code I'm using shoots me back this API error code:
And this is the method code that produces the above error. (A Java whiz will recognize it as ripped-off code to POST to a form page, which is what it is
):
Anyhoo, I'm not trying to turn this thread into Stack Exchange: I just clipboarded this code to show you what I'm trying to do.
If there's anyone here that has a method that successfully makes a POST request to the API, I'd be grateful if you could share how you did it. Thanks!
Code:
{"errorDescription":"Incorrect request","errorCode":1}And this is the method code that produces the above error. (A Java whiz will recognize it as ripped-off code to POST to a form page, which is what it is
):Code:
private static String HTTPPost(String ApiChoice, String params) {
String output;
int responseCode;
String urlString;
URL url;
URLConnection urlconnection;
HttpURLConnection connection;
DataOutputStream out;
BufferedReader in;
String whoops;
int i;
output = "Wrong crypto parameter!";
if(ApiChoice.equals("nxt")) {
urlString = NxtApiLoc + "/nxt";
}
else if(ApiChoice.equals("nhz")) {
urlString = HZApiLoc + "/nhz";
}
else return output;
// Might need to add an ? after /nxt and /nhz.
output = "";
try{
url = new URL(urlString);
urlconnection = url.openConnection();
connection = (HttpURLConnection)urlconnection;
connection.setRequestMethod("POST");
connection.setRequestProperty("charset", "utf-8");
connection.setRequestProperty("Content-Type",
"application/x-www-form-urlencoded");
connection.setRequestProperty("Content-Language", "en-US");
connection.setUseCaches (false);
connection.setDoInput(true);
connection.setDoOutput(true);
out = new DataOutputStream(connection.getOutputStream());
out.writeBytes(params);
out.flush();
out.close();
responseCode = connection.getResponseCode();
in = new BufferedReader(new InputStreamReader(connection.getInputStream()));
output = in.readLine();
/*
Might want to try this approach:
StringBuffer fetcher = new StringBuffer();
while ((output = in.readLine()) != null) {
fetcher.append(inputLine);
}
in.close();
output = fetcher.toString();
*/
} catch(IOException ex) { output = "Failed"; };
return output;
}
Anyhoo, I'm not trying to turn this thread into Stack Exchange: I just clipboarded this code to show you what I'm trying to do.
If there's anyone here that has a method that successfully makes a POST request to the API, I'd be grateful if you could share how you did it. Thanks!
The NFD NSC Asset transfer tool used post requests:
https://bitbucket.org/NFDcoin/nfdcoin/src/98e60e67f1df0e073862c787fda7312f3eba85b1/src/java/nfd/util/NSCAssets/APIRequest.java?at=NFD-1.2.9#APIRequest.java-54
Example to use the sendRequest method.
https://bitbucket.org/NFDcoin/nfdcoin/src/98e60e67f1df0e073862c787fda7312f3eba85b1/src/java/nfd/util/NSCAssets/NSCAssetTransfer.java?at=NFD-1.2.9#NSCAssetTransfer.java-149
Code:
StringBuffer url = new StringBuffer();
url.append((isHttpsConnection ? "https" : "http"));
url.append("://localhost:");
url.append((isTestnet ? "9876" : Nxt.getIntProperty("nxt.apiServerPort")));
url.append("/nxt?requestType=transferAsset");
url.append("&secretPhrase=" + secret);
url.append("&comment=" + transferMessage.getMessage());
url.append("&recipient=" + Convert.toUnsignedLong(generatorAccount.getAccountId()));
url.append("&asset=" + NSC_ASSET_ID);
url.append("&quantityQNT=" + transferMessage.getQuantity());
url.append("&feeNQT=100000000&deadline=100");
StringBuffer buffer;
if (!isDryRun) {
buffer = APIRequest.sendRequest(url.toString());
} else {
buffer = new StringBuffer("mode --dry-run: sending of transactions is disabled");
}
