MD5加密
UTIL工具类
MD5Util
package com.kude.util; import org.springframework.util.StringUtils; import java.security.MessageDigest; /** * @author szj * @date 2019/7/20 14:39 */ public class MD5Util { private static String byteArrayToHexString(byte b[]) { StringBuffer resultSb = new StringBuffer(); for (int i = 0; i < b.length; i++) resultSb.append(byteToHexString(b[i])); return resultSb.toString(); } private static String byteToHexString(byte b) { int n = b; if (n < 0) n += 256; int d1 = n / 16; int d2 = n % 16; return hexDigits[d1] + hexDigits[d2]; } /** * 返回大写MD5 * * @param origin * @param charsetname * @return */ private static String MD5Encode(String origin, String charsetname) { String resultString = null; try { resultString = new String(origin); MessageDigest md = MessageDigest.getInstance("MD5"); if (charsetname == null || "".equals(charsetname)) resultString = byteArrayToHexString(md.digest(resultString.getBytes())); else resultString = byteArrayToHexString(md.digest(resultString.getBytes(charsetname))); } catch (Exception exception) { } return resultString.toUpperCase(); } public static String MD5EncodeUtf8(String origin) { origin = origin + PropertiesUtil.getProperty("password.salt", ""); return MD5Encode(origin, "utf-8"); } private static final String hexDigits[] = {"0", "1", "2", "3", "4", "5", "6", "7", "8", "9", "a", "b", "c", "d", "e", "f"}; }
PropertiestiesUtil
package com.kude.util; import org.apache.commons.lang3.StringUtils; import org.slf4j.Logger; import org.slf4j.LoggerFactory; import java.io.IOException; import java.io.InputStreamReader; import java.util.Properties; /** * @author szj * @date 2019/7/20 14:39 */ public class PropertiesUtil { private static Logger logger = LoggerFactory.getLogger(PropertiesUtil.class); private static Properties props; static { String fileName = "salt.properties"; props = new Properties(); try { props.load(new InputStreamReader(PropertiesUtil.class.getClassLoader().getResourceAsStream(fileName),"UTF-8")); } catch (IOException e) { logger.error("配置文件读取异常",e); } } public static String getProperty(String key){ String value = props.getProperty(key.trim()); if(StringUtils.isBlank(value)){ return null; } return value.trim(); } public static String getProperty(String key,String defaultValue){ String value = props.getProperty(key.trim()); if(StringUtils.isBlank(value)){ value = defaultValue; } return value.trim(); } }
配置文件
salt.properties
password.salt = geelysdafaqj23ou89ZXcj@#$@#$#@KJdjklj;D../dSF.,
实现层
public ServerResponse<User> login(int userId,String password){ UserExample userExample = new UserExample(); UserExample.Criteria criteria = userExample.createCriteria(); criteria.andUserIdEqualTo(userId); List<User> list = userMapper.selectByExample(userExample); if(list.size() == 0){ return ServerResponse.createByErrorMessage("用户账号不存在"); } String md5Password = MD5Util.MD5EncodeUtf8(password); User user = list.get(0); if(user.getPassword().equals(password)){ user.setPassword(StringUtils.EMPTY); return ServerResponse.createBySuccess(user); } return ServerResponse.createByErrorMessage("登陆失败"); }