MD5加密工具类 UTF-8编码格式签名 UTF-8编译和反编译

3/3/2017来源:C/C++教程人气:3558

md5加密工具类,UTF-8编码格式:

public static String MD5(String string) {

  byte[] hash;          try {              hash = MessageDigest.getInstance("MD5").digest(string.getBytes("UTF-8"));          } catch (NoSuchAlgorithmException e) {              throw new RuntimeException("Huh, MD5 should be supported?", e);          } catch (UnsupportedEncodingException e) {              throw new RuntimeException("Huh, UTF-8 should be supported?", e);          }            StringBuilder hex = new StringBuilder(hash.length * 2);          for (byte b : hash) {              if ((b & 0xFF) < 0x10) hex.append("0");              hex.append(Integer.toHexString(b & 0xFF));          }          return hex.toString();   }

UTF-8反编译:

String a="app_package_name%3Dcom.flyhand.yunpos";

String b=URLDecoder.decode(a, "UTF-8");

UTF-8编译:

String c="abcd";

String d=URLEncoder.encode(c, "utf-8");