Java code for verification class - Revision history

George2: Blanked the page

2022-03-27T14:08:05Z

Blanked the page

George2 at 08:36, 14 July 2016

2016-07-14T08:36:55Z

George2 at 08:31, 14 July 2016

2016-07-14T08:31:20Z

George2: Created page with " import java.io.BufferedReader; import java.io.DataOutputStream; import java.io.IOException; import java.io.InputStreamReader; import java.io.StringReader;..."

2016-07-14T08:30:55Z

Created page with "<source lang="java"> import java.io.BufferedReader; import java.io.DataOutputStream; import java.io.IOException; import java.io.InputStreamReader; import java.io.StringReader;..."

New page

<source lang="java">
import java.io.BufferedReader;
import java.io.DataOutputStream;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.StringReader;
import java.net.URL;

import javax.json.Json;
import javax.json.JsonObject;
import javax.json.JsonReader;
import javax.net.ssl.HttpsURLConnection;

public class VerifyRecaptcha {

public static final String url = "https://www.google.com/recaptcha/api/siteverify";
public static final String secret = "6LfUpyQTAAAAAHsXPxomPWvid-mAnyq-c4GCN5gO";
private final static String USER_AGENT = "Mozilla/5.0";

public static boolean verify(String gRecaptchaResponse) throws IOException {
if (gRecaptchaResponse == null || "".equals(gRecaptchaResponse)) {
return false;
}

try{
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 postParams = "secret=" + secret + "&response="
+ gRecaptchaResponse;

// Send post request
con.setDoOutput(true);
DataOutputStream wr = new DataOutputStream(con.getOutputStream());
wr.writeBytes(postParams);
wr.flush();
wr.close();

int responseCode = con.getResponseCode();
System.out.println("\nSending 'POST' request to URL : " + url);
System.out.println("Post parameters : " + postParams);
System.out.println("Response Code : " + responseCode);

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());

//parse JSON response and return 'success' value
JsonReader jsonReader = Json.createReader(new StringReader(response.toString()));
JsonObject jsonObject = jsonReader.readObject();
jsonReader.close();

return jsonObject.getBoolean("success");
}catch(Exception e){
e.printStackTrace();
return false;
}
}
}

</source>

← Older revision		Revision as of 14:08, 27 March 2022
Line 1:		Line 1:
−	~~This class has a static method called verify which takes the captcha response and checks it against google<br>~~
−	~~<source lang="java">~~
−	~~import java.io.BufferedReader;~~
−	~~import java.io.DataOutputStream;~~
−	~~import java.io.IOException;~~
−	~~import java.io.InputStreamReader;~~
−	~~import java.io.StringReader;~~
−	~~import java.net.URL;~~

−	~~import javax.json.Json;~~
−	~~import javax.json.JsonObject;~~
−	~~import javax.json.JsonReader;~~
−	~~import javax.net.ssl.HttpsURLConnection;~~
−
−	~~public class VerifyRecaptcha {~~
−
−	~~public static final String url = "https://www.google.com/recaptcha/api/siteverify";~~
−	~~public static final String secret = "<secret key>";~~
−	~~private final static String USER_AGENT = "Mozilla/5.0";~~
−
−	~~public static boolean verify(String gRecaptchaResponse) throws IOException {~~
−	~~if (gRecaptchaResponse == null \|\| "".equals(gRecaptchaResponse)) {~~
−	~~return false;~~
−	}
−
−	~~try{~~
−	~~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 postParams = "secret=" + secret + "&response="~~
−	~~+ gRecaptchaResponse;~~
−
−	~~// Send post request~~
−	~~con.setDoOutput(true);~~
−	~~DataOutputStream wr = new DataOutputStream(con.getOutputStream());~~
−	~~wr.writeBytes(postParams);~~
−	~~wr.flush();~~
−	~~wr.close();~~
−
−	~~int responseCode = con.getResponseCode();~~
−	~~System.out.println("\nSending 'POST' request to URL : " + url);~~
−	~~System.out.println("Post parameters : " + postParams);~~
−	~~System.out.println("Response Code : " + responseCode);~~
−
−	~~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());~~
−
−	~~//parse JSON response and return 'success' value~~
−	~~JsonReader jsonReader = Json.createReader(new StringReader(response.toString()));~~
−	~~JsonObject jsonObject = jsonReader.readObject();~~
−	~~jsonReader.close();~~
−
−	~~return jsonObject.getBoolean("success");~~
−	~~}catch(Exception e){~~
−	~~e.printStackTrace();~~
−	~~return false;~~
−	}
−	}
−	}
−
−	~~</source>~~

← Older revision		Revision as of 08:36, 14 July 2016
Line 1:		Line 1:
		+	This class has a static method called verify which takes the captcha response and checks it against google<br>
	<source lang="java">		<source lang="java">
	import java.io.BufferedReader;		import java.io.BufferedReader;

@@ Line 15: / Line 15: @@
      public static final String url = "https://www.google.com/recaptcha/api/siteverify";
-     public static final String secret = "6LfUpyQTAAAAAHsXPxomPWvid-mAnyq-c4GCN5gO";
+     public static final String secret = "<secret key>";
      private final static String USER_AGENT = "Mozilla/5.0";