Java搭建微信公众号的服务器配置

Java搭建微信公众号的服务器配置

• 代码文件：

package com.dhrtec.utils;

import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;
import java.util.Arrays;

/**
 * Created by l on 2018/10/17.
 */
public class SignUtil {
    private static String token = Global.getConfig("WeChatToken");// 与微信公众号上的token一致

    /**
     * 校验签名
     * @param signature 签名
     * @param timestamp 时间戳
     * @param nonce 随机数
     * @return 布尔值
     */
    public static boolean checkSignature(String signature,String timestamp,String nonce){
        String checktext = null;
        if (null != signature) {
            //对ToKen,timestamp,nonce 按字典排序
            String[] paramArr = new String[]{token,timestamp,nonce};
            Arrays.sort(paramArr);
            //将排序后的结果拼成一个字符串
            String content = paramArr[0].concat(paramArr[1]).concat(paramArr[2]);

            try {
                MessageDigest md = MessageDigest.getInstance("SHA-1");
                //对接后的字符串进行sha1加密
                byte[] digest = md.digest(content.toString().getBytes());
                checktext = byteToStr(digest);
            } catch (NoSuchAlgorithmException e){
                e.printStackTrace();
            }
        }
        //将加密后的字符串与signature进行对比
        return checktext !=null ? checktext.equals(signature.toUpperCase()) : false;
    }

    /**
     * 将字节数组转化我16进制字符串
     * @param byteArrays 字符数组
     * @return 字符串
     */
    private static String byteToStr(byte[] byteArrays){
        String str = "";
        for (int i = 0; i < byteArrays.length; i++) {
            str += byteToHexStr(byteArrays[i]);
        }
        return str;
    }

    /**
     *  将字节转化为十六进制字符串
     * @param myByte 字节
     * @return 字符串
     */
    private static String byteToHexStr(byte myByte) {
        char[] Digit = {'0','1','2','3','4','5','6','7','8','9','A','B','C','D','E','F'};
        char[] tampArr = new char[2];
        tampArr[0] = Digit[(myByte >>> 4) & 0X0F];
        tampArr[1] = Digit[myByte & 0X0F];
        String str = new String(tampArr);
        return str;
    }
}

调用方法：

@RequestMapping(value = "/serial", method = RequestMethod.GET)
public String checkSign(HttpServletRequest request,HttpServletResponse response){
    String signature=request.getParameter("signature");
    String timestamp=request.getParameter("timestamp");
    String nonce=request.getParameter("nonce");
    String echostr=request.getParameter("echostr");
    System.out.println("本身"+signature);
    if(SignUtil.checkSignature(signature,timestamp,nonce)) {
       return echostr;
    }
    return null;
}