java加密算法2

package com.binsoft.util;import java.security.MessageDigest;public class Core {private String MD5;private String text;/** * * @param text * @return * @throws Exception */public boolean setContent(String text) throws Exception {this.text = text;this.MD5 = getMD5(text);return true;}/** * * @return * @throws Exception */public String getContent() throws Exception {return this.text;}/** * * @return * @throws Exception */public String getMD5() throws Exception {return this.MD5;}/** * * @param data * @return * @throws Exception */private String convertToHex(byte[] data) throws Exception {StringBuffer buf = new StringBuffer();for (int i = 0; i < data.length; i++) {//除以16int halfbyte = (data[i] >>> 4) & 0x0F;int two_halfs = 0;do {if ((0 <= halfbyte) && (halfbyte <= 9)) {buf.append((char) ('0' + halfbyte));} else {buf.append((char) ('a' + (halfbyte - 10)));}halfbyte = data[i] & 0x0F;} while (two_halfs++ < 1);}return buf.toString();}private String getMD5(String text) throws Exception{MessageDigest md;md = MessageDigest.getInstance("MD5");byte[] md5hash = new byte[32];md.update(text.getBytes("utf-8"),0,text.length());md5hash = md.digest();return convertToHex(md5hash);}/** * @param args */public static void main(String[] args) { Core core = new Core(); try { //E87DB0C7EEEA37AEDC9EEB92E2DA5340core.setContent("libinjareo");System.out.println("加密后的数值： " + core.MD5);} catch (Exception e) {e.printStackTrace();}}}