本文实例讲述了java计算文本md5加密值的方法。分享给大家供大家参考,具体如下:
java计算文本md5值,用于加密
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import java.security.messagedigest; import java.security.nosuchalgorithmexception; public class getmd5 { public static void main(string[] args) { string a= "123" ; system.out.println(getmd5(a)); } /** * 获取文本字段的md5值 * @param txt * @return */ public static string getmd5(string txt){ string rs = "" ; string[] hexdigits = { "0" , "1" , "2" , "3" , "4" , "5" , "6" , "7" , "8" , "9" , "a" , "b" , "c" , "d" , "e" , "f" }; try { messagedigest messagedigest = messagedigest.getinstance( "md5" ); byte [] b = messagedigest.digest(txt.getbytes()); stringbuffer resultsb = new stringbuffer(); for ( int i = 0 ; i < b.length; i++) { int n = b[i]; if (n < 0 ) n = 256 + n; int d1 = n / 16 ; int d2 = n % 16 ; resultsb.append(hexdigits[d1] + hexdigits[d2]); } rs = resultsb.tostring(); } catch (nosuchalgorithmexception e) { e.printstacktrace(); } return rs; } } |
输出值:
202cb962ac59075b964b07152d234b70
ps:关于加密解密感兴趣的朋友还可以参考本站在线工具:
文字在线加密解密工具(包含aes、des、rc4等):https://tool.zzvips.com/t/txt_encode/
md5在线加密工具:https://tool.zzvips.com/t/md5/
在线sha1/sha224/sha256/sha384/sha512加密工具:https://tool.zzvips.com/t/sha/
希望本文所述对大家java程序设计有所帮助。
原文链接:https://blog.csdn.net/u013183865/article/details/50595746