鉴权

    String appkey = request.getHeader("appkey");
    String signature = request.getHeader("signature");
    String timestamp = request.getHeader("timestamp");
    
    String appsecret = "appsecret";
    String si1 = MD5Utils.md5(timestamp + appsecret).toLowerCase();
	String signature1 = si1.substring(si1.length() - 16);
	if(signature1.equals(signature)&&appkey.equals("appkey")) {
		System.out.println("相等");
	}else {
		System.out.println("不相等");
		throw new ApiRRException("请先登录", 401);
	}

MD5Utils.java

import java.io.UnsupportedEncodingException;
import java.math.BigInteger;
import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;

import org.apache.commons.lang3.StringUtils;

public class MD5Utils {

	/**
	 * 使用md5的算法进行加密
	 */
	public static String md5(String plainText, String charset) {
		byte[] secretBytes = null;
		String md5code = null ;
		if(plainText != null){
			try {
				byte[] bs = null;
				if (StringUtils.isBlank(charset)) {
					bs = plainText.getBytes();
				} else {
					bs = plainText.getBytes(charset);
				}
				secretBytes = MessageDigest.getInstance("md5").digest(bs);
			} catch (NoSuchAlgorithmException e) {
				throw new RuntimeException("没有md5这个算法！", e);
			} catch (UnsupportedEncodingException e) {
				throw new RuntimeException("转编码[" + charset + "]出错:" + e.getMessage(), e);
			}
			md5code = new BigInteger(1, secretBytes).toString(16);// 16进制数字
		
			// 如果生成数字未满32位，需要前面补0
			for (int i = 0; i < 32 - md5code.length(); i++) {
				md5code = "0" + md5code;
			}
			return md5code;
		}
		return null;
	}

	/**
	 * 使用md5的算法进行加密
	 */
	public static String md5(String plainText) {
		return md5(plainText, null);
	}


	public static void main(String[] args) {
		System.out.println(md5("123456"));
	}

}