微信小程序获取手机号 (java解密及微信小程序获取openid、session_key)

package com.my.getphone; import java.io.BufferedReader; import java.io.InputStreamReader; import java.net.URL; import java.net.URLConnection; import java.security.AlgorithmParameters; import java.security.Security; import java.security.spec.AlgorithmParameterSpec; import java.util.List; import java.util.Map; import javax.crypto.Cipher; import javax.crypto.spec.IvParameterSpec; import javax.crypto.spec.SecretKeySpec; import org.apache.commons.codec.binary.Base64; import org.bouncycastle.jce.provider.BouncyCastleProvider; import org.bouncycastle.util.Arrays; import com.gexin.fastjson.JSONObject; public class Utils { // GET方法 public static String sendGet(String url, String param) { String result = ""; BufferedReader in = null; try { String urlNameString = url + "?" + param; URL realUrl = new URL(urlNameString); URLConnection connection = realUrl.openConnection(); connection.setRequestProperty("accept", "*/*"); connection.setRequestProperty("connection", "Keep-Alive"); connection.setRequestProperty("user-agent", "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1;SV1)"); connection.connect(); Map<String, List<String>> map = connection.getHeaderFields(); for (String key : map.keySet()) { System.out.println(key + "--->" + map.get(key)); } in = new BufferedReader(new InputStreamReader( connection.getInputStream())); String line; while ((line = in.readLine()) != null) { result += line; } } catch (Exception e) { System.out.println("发送GET请求出现异常！" + e); e.printStackTrace(); } finally { try { if (in != null) { in.close(); } } catch (Exception e2) { e2.printStackTrace(); } } return result; } public static Object getPhoneNumber(String encryptedData, String session_key, String iv) { // 被加密的数据 byte[] dataByte = Base64.decodeBase64(encryptedData); // 加密秘钥 byte[] keyByte = Base64.decodeBase64(session_key); // 偏移量 byte[] ivByte = Base64.decodeBase64(iv); try { // 如果密钥不足16位，那么就补足. 这个if 中的内容很重要 int base = 16; if (keyByte.length % base != 0) { int groups = keyByte.length / base + (keyByte.length % base != 0 ? 1 : 0); byte[] temp = new byte[groups * base]; Arrays.fill(temp, (byte) 0); System.arraycopy(keyByte, 0, temp, 0, keyByte.length); keyByte = temp; } // 初始化 Security.addProvider(new BouncyCastleProvider()); Cipher cipher = Cipher.getInstance("AES/CBC/PKCS5Padding"); SecretKeySpec spec = new SecretKeySpec(keyByte, "AES"); AlgorithmParameters parameters = AlgorithmParameters .getInstance("AES"); parameters.init(new IvParameterSpec(ivByte)); cipher.init(Cipher.DECRYPT_MODE, spec, parameters);// 初始化 byte[] resultByte = cipher.doFinal(dataByte); if (null != resultByte && resultByte.length > 0) { String result = new String(resultByte, "UTF-8"); return JSONObject.parseObject(result); } } catch (Exception e) { e.printStackTrace(); } return null; } public static Object getPhoneNumber2(String encryptedData, String session_key, String iv) { // 被加密的数据 byte[] dataByte = Base64.decodeBase64(encryptedData); // 加密秘钥 byte[] keyByte = Base64.decodeBase64(session_key); // 偏移量 byte[] ivByte = Base64.decodeBase64(iv); try { // 如果密钥不足16位，那么就补足. 这个if 中的内容很重要 int base = 16; if (keyByte.length % base != 0) { int groups = keyByte.length / base + (keyByte.length % base != 0 ? 1 : 0); byte[] temp = new byte[groups * base]; Arrays.fill(temp, (byte) 0); System.arraycopy(keyByte, 0, temp, 0, keyByte.length); keyByte = temp; } // 初始化 Security.addProvider(new BouncyCastleProvider()); Cipher cipher = Cipher.getInstance("AES/CBC/PKCS5Padding"); SecretKeySpec spec = new SecretKeySpec(keyByte, "AES"); AlgorithmParameters parameters = AlgorithmParameters .getInstance("AES"); parameters.init(new IvParameterSpec(ivByte)); cipher.init(Cipher.DECRYPT_MODE, spec, parameters);// 初始化 byte[] resultByte = cipher.doFinal(dataByte); if (null != resultByte && resultByte.length > 0) { String result = new String(resultByte, "UTF-8"); return JSONObject.parseObject(result); } } catch (Exception e) { e.printStackTrace(); } return null; } public static String wxDecrypt(String encrypted, String sessionKey, String iv) throws Exception { byte[] encrypData = Base64.decodeBase64(encrypted); byte[] ivData = Base64.decodeBase64(iv); byte[] sKey = Base64.decodeBase64(sessionKey); String decrypt = decrypt(sKey, ivData, encrypData); return decrypt; } public static String decrypt(byte[] key, byte[] iv, byte[] encData) throws Exception { // AlgorithmParameterSpec ivSpec = new IvParameterSpec(iv); // Cipher cipher = Cipher.getInstance("AES/CBC/PKCS5Padding"); // SecretKeySpec keySpec = new SecretKeySpec(key, "AES"); // cipher.init(Cipher.DECRYPT_MODE, keySpec, ivSpec); // 解析解密后的字符串 String resultString = null; AlgorithmParameterSpec ivSpec = new IvParameterSpec(iv); SecretKeySpec keySpec = new SecretKeySpec(key, "AES"); try { Cipher cipher = Cipher.getInstance("AES/CBC/PKCS5Padding"); cipher.init(Cipher.DECRYPT_MODE, keySpec, ivSpec); resultString = new String(cipher.doFinal(encData), "UTF-8"); } catch (Exception e) { Cipher cipher = Cipher.getInstance("AES/CBC/PKCS5Padding"); cipher.init(Cipher.DECRYPT_MODE, keySpec, ivSpec); resultString = new String(cipher.doFinal(encData), "UTF-8"); } return resultString; } }