groovy 3.0.7
代码实现
实现方式1
import java.security.MessageDigest;
public class MD5Utils {
public final static String MD5(String s) {
char[] hexChars = ['0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'a', 'b', 'c', 'd', 'e', 'f']; // 十六进制的字符
try {
byte[] byteData = s.getBytes("utf-8"); // 获取待加密字符的字节表示
MessageDigest md5 = MessageDigest.getInstance("MD5"); //指定加密方式,获取加密对象
byte[] digest = md5.digest(byteData); // 加密
StringBuffer sb = new StringBuffer();
// 处理成十六进制的字符串(通常)
for (byte b : digest) {
sb.append(hexChars[(b >> 4) & 15]);
sb.append(hexChars[b & 15]);
}
return new String(sb);
} catch (Exception e) {
e.printStackTrace();
return null;
}
}
}
String md5Str = MD5Utils.MD5("2023, hello, mr授客"); // 获取32位小写md5值
println(md5Str); // 52d4eb68f09f4a8eae0b0b02adc748f3
md5Str = md5Str.substring(8, 24); // 获取16位小写md5值
println(md5Str); // f09f4a8eae0b0b02
说明:如果在JAVA中运行,则需要修改
char[] hexChars = ['0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'a', 'b', 'c', 'd', 'e', 'f']; // 十六进制的字符
为
char[] hexChars = {'0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'a', 'b', 'c', 'd', 'e', 'f'}; // 十六进制的字符
实现方式2
import java.security.MessageDigest;
public class MD5Utils {
public final static String MD5(String s) {
char[] hexChars = ['0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'a', 'b', 'c', 'd', 'e', 'f'];
try {
byte[] byteData = s.getBytes("utf-8");
MessageDigest md5 = MessageDigest.getInstance("MD5");
byte[] digest = md5.digest(byteData);
return new BigInteger(1, digest).toString(16);
} catch (Exception e) {
e.printStackTrace();
return null;
}
}
}
String md5Str = MD5Utils.MD5("2023, hello, mr授客"); // 获取32位小写md5值
println(md5Str); // 52d4eb68f09f4a8eae0b0b02adc748f3
md5Str = md5Str.substring(8, 24); // 获取16位小写md5值
println(md5Str); // f09f4a8eae0b0b02
实现方式3
import java.security.MessageDigest;
public class MD5Utils {
public final static String MD5(String s) {
char[] hexChars = ['0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'a', 'b', 'c', 'd', 'e', 'f']; // 十六进制的字符
try {
byte[] byteData = s.getBytes("utf-8");
MessageDigest md5 = MessageDigest.getInstance("MD5");
byte[] digest = md5.digest(byteData);
return new BigInteger(1, digest).toString(16);
} catch (Exception e) {
e.printStackTrace();
return null;
}
}
}
String md5Str = MD5Utils.MD5("2023, hello, mr授客"); // 获取32位小写md5值
println(md5Str); // 52d4eb68f09f4a8eae0b0b02adc748f3
md5Str = md5Str.substring(8, 24); // 获取16位小写md5值
println(md5Str); // f09f4a8eae0b0b02
===提示文字过少,占位行
===提示文字过少,占位行