top.rwocj.wx.pay.common.MD5Util Maven / Gradle / Ivy
package top.rwocj.wx.pay.common;
import java.io.File;
import java.io.FileInputStream;
import java.nio.charset.StandardCharsets;
import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;
/**
* md5加密工具类
*/
public interface MD5Util {
/**
* 获取单个文件的MD5值！
*
* @param inStr 文件内容
*/
static String getMD5(String inStr) {
return inStr == null ? null : getMD5(inStr.getBytes(StandardCharsets.UTF_8));
}
/**
* @param file:要加密的文件
* @return MD5摘要码
*/
static String getMD5(File file) {
try (FileInputStream fis = new FileInputStream(file)) {
MessageDigest md = MessageDigest.getInstance("MD5");
byte[] buffer = new byte[2048];
int length;
while ((length = fis.read(buffer)) != -1) {
md.update(buffer, 0, length);
}
byte[] b = md.digest();
return HexUtil.byte2Hex(b);
} catch (Exception e) {
throw new RuntimeException(e);
}
}
static String getMD5(byte[] bytes) {
try {
MessageDigest md = MessageDigest.getInstance("MD5");
md.update(bytes);
byte[] b = md.digest();
return HexUtil.byte2Hex(b);
} catch (NoSuchAlgorithmException ignore) {
}
return null;
}
}