该博文是参照其他博主内容经过亲测的产物,也是因为网上关于这类博文比较多,大多还类似,再此就不注明原创了,如有侵权,望主动联系,谢谢!!!
这次选用SHA-256的原因也很简单,据说之前用的MD5被人爆破了,宁可信其有不可信其无。
言归正传,总结两种方式,最终输出结果一致,下面看服务端代码:
package com.zxx.until;
import org.apache.commons.codec.binary.Hex;
import java.io.UnsupportedEncodingException;
import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;
public class ads {
public static void main(String[] args) {
toSHA001("123456123456");
toSHA002("123456123456");
}
private static void toSHA001(String text) {
MessageDigest digest;
try {
digest = MessageDigest.getInstance("SHA-256");
byte[] hash = digest.digest(text.getBytes("UTF-8"));
String output = Hex.encodeHexString(hash);
System.out.println(output);
} catch (NoSuchAlgorithmException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}catch (UnsupportedEncodingException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
public static String toSHA002(String str){
MessageDigest messageDigest;
String encodeStr = "";
try {
messageDigest = MessageDigest.getInstance("SHA-256");
messageDigest.update(str.getBytes("UTF-8"));
encodeStr = byte2Hex(messageDigest.digest());
System.out.println(encodeStr);
} catch (NoSuchAlgorithmException e) {
e.printStackTrace();
} catch (UnsupportedEncodingException e) {
e.printStackTrace();
}
return encodeStr;
}
private static String byte2Hex(byte[] bytes){
StringBuffer stringBuffer = new StringBuffer();
String temp = null;
for (int i=0;i<bytes.length;i++){
temp = Integer.toHexString(bytes[i] & 0xFF);
if (temp.length()==1){
//1得到一位的进行补0操作
stringBuffer.append("0");
}
stringBuffer.append(temp);
}
return stringBuffer.toString();
}
}
用到一个JAR包:
<!-- https://mvnrepository.com/artifact/commons-codec/commons-codec -->
<dependency>
<groupId>commons-codec</groupId>
<artifactId>commons-codec</artifactId>
<version>1.11</version>
</dependency>
在客户端也有专门的 js 可以做:
我是 JS ,点我呀
代码就一句话:
<html>
<head></head>
<body>
<script type="text/javascript" src="sha256_2.js"></script>
<script type="text/javascript">
document.write(sha256_digest("hello world"));
</script>
</body>
</html>