Google reCaptcha验证码对接Demo

package com.ibiz.recaptcha; import java.io.InputStream; import java.io.OutputStream; import java.net.URL; import javax.json.Json; import javax.json.JsonObject; import javax.json.JsonReader; import javax.net.ssl.HttpsURLConnection; public class VerifyUtils { public static final String SITE_VERIFY_URL = // "https://www.google.com/recaptcha/api/siteverify"; public static boolean verify(String gRecaptchaResponse) { if (gRecaptchaResponse == null || gRecaptchaResponse.length() == 0) { return false; } try { URL verifyUrl = new URL(SITE_VERIFY_URL); // Open a Connection to URL above. HttpsURLConnection conn = (HttpsURLConnection) verifyUrl.openConnection(); // Add the Header informations to the Request to prepare send to the server. conn.setRequestMethod("POST"); conn.setRequestProperty("User-Agent", "Mozilla/5.0"); conn.setRequestProperty("Accept-Language", "en-US,en;q=0.5"); // Data will be sent to the server. String postParams = "secret=" + MyConstants.SECRET_KEY // + "&response=" + gRecaptchaResponse; // Send Request conn.setDoOutput(true); // Get the output stream of Connection. // Write data in this stream, which means to send data to Server. OutputStream outStream = conn.getOutputStream(); outStream.write(postParams.getBytes()); outStream.flush(); outStream.close(); // Response code return from Server. int responseCode = conn.getResponseCode(); System.out.println("responseCode=" + responseCode); // Get the Input Stream of Connection to read data sent from the Server. InputStream is = conn.getInputStream(); JsonReader jsonReader = Json.createReader(is); JsonObject jsonObject = jsonReader.readObject(); jsonReader.close(); // ==> {"success": true} System.out.println("Response: " + jsonObject); boolean success = jsonObject.getBoolean("success"); return success; } catch (Exception e) { e.printStackTrace(); return false; } } }