md5加密结合json使用异步提交iframe
jsp页面
package com.app.tools;import java.security.MessageDigest;import java.security.NoSuchAlgorithmException;public class MD5Tool { //该方法将你输入的字符串，通过md5加密，返回一个加密後的字符串 public static String MD5Encrypt(String inStr) { MessageDigest md = null; String outStr = null; try { md = MessageDigest.getInstance("MD5"); //可以选中其他的算法如SHA byte[] digest = md.digest(inStr.getBytes()); //返回的是byet[]，要转化为String存储比较方便 outStr = bytetoString(digest); } catch (NoSuchAlgorithmException nsae) { nsae.printStackTrace(); } return outStr; } public static String bytetoString(byte[] digest) { String str = ""; String tempStr = ""; for (int i = 1; i < digest.length; i++) { tempStr = (Integer.toHexString(digest[i] & 0xff)); if (tempStr.length() == 1) { str = str + "0" + tempStr; } else { str = str + tempStr; } } return str.toLowerCase(); }}