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package com.mxixm.fastboot.weixin.controller;

import com.mxixm.fastboot.weixin.util.CryptUtils;
import org.springframework.web.bind.annotation.ResponseBody;

import java.util.stream.Collectors;
import java.util.stream.Stream;

/**
 * FastBootWeixin  /
 * 可以优化成内置的方式
 * 之后可以改造为endPoint方式
 *
 * @author Guangshan
 * @summary FastBootWeixin  WXVerifyController
 * @Copyright (c) 2017, Guangshan Group All Rights Reserved
 * @since 2017/7/16 23:37
 */
public class WxBuildinVerify {

    private final String token;

    public WxBuildinVerify(String token) {
        this.token = token;
    }

    @ResponseBody
    public String verify(String signature, String timestamp, String nonce, String echostr) {
        String rawString = Stream.of(token, timestamp, nonce).sorted().collect(Collectors.joining());
        if (signature.equals(CryptUtils.encryptSHA1(rawString))) {
            return echostr;
        }
        return null;
    }

}