import java.io.UnsupportedEncodingException;
import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;
public class Sha256 {
public static String getSHA256(String str){
MessageDigest messageDigest;
String encodestr = "";
try {
messageDigest = MessageDigest.getInstance("SHA-256");
messageDigest.update(str.getBytes("UTF-8"));
encodestr = byte2Hex(messageDigest.digest());
} 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){
stringBuffer.append("0");
}
stringBuffer.append(temp);
}
return stringBuffer.toString();
}
}
作者：初来乍到，多多关照