一个代码小问题，，请教各位师兄

[偶滴神啊]

这段
这是一段加密md5的java sign是加密函数 用法 MD5.sign(str) str是需做加密值，如何在运算结果后面加上=str呢 比如

e10adc3949ba59abbe56e057f20f883e=str

package com.ffgfghsd.ihghgf.utils;

import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;

public class MD5
{
  public static String sign(String paramString1, String paramString2)
  {
    try
    {
      StringBuilder localStringBuilder = new StringBuilder();
      localStringBuilder.append(paramString1);
      localStringBuilder.append(paramString2);
      String str1 = localStringBuilder.toString();
      MessageDigest localMessageDigest = MessageDigest.getInstance("MD5");
      localMessageDigest.update(str1.getBytes());
      byte[] arrayOfByte = localMessageDigest.digest();
      StringBuffer localStringBuffer = new StringBuffer();
      for (int i = 0; i < arrayOfByte.length; i++)
      {
        int j = arrayOfByte[i];
        if (j < 0) {
          j += 256;
        }
        if (j < 16) {
          localStringBuffer.append("0");
        }
        localStringBuffer.append(Integer.toHexString(j));
      }
      String str2 = localStringBuffer.toString();
      return str2;
    }
    catch (NoSuchAlgorithmException localNoSuchAlgorithmException)
    {
      localNoSuchAlgorithmException.printStackTrace();
    }
    return "";
  }
}

[偶滴神啊]

另外请问是那个函数接收的原始字符？

[奔跑的小鱼儿]

String str2 = localStringBuffer.toString();
return str2;

改成：

String str2 = localStringBuffer.toString()+"="+paramString1;
return str2;

[奔跑的小鱼儿]

两个参数都是原始字符，你可只用一个另外一个传""