微信小程序客服配置
anlondon Lv6
  2021-07-06 17:41:00 2021-07-06 17:41   2023-07-05 22:01:00      

前言

# 建议各位先按底部的参考资料顺序查看，以便充分了解步骤以及设置要点

配置：

  • php7.4
  • tp5
  • easyWechat

部署

一，验证token

根据消息推送|token 验证的说明，在配置消息推送时，需要在对应的请求里添加操作
image

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$signature = $_GET["signature"];
        $timestamp = $_GET["timestamp"];
        $nonce = $_GET["nonce"];

        $tmpArr = array($this->Token, $timestamp, $nonce);
        sort($tmpArr, SORT_STRING);
        $tmpStr = implode( $tmpArr );
        $tmpStr = sha1( $tmpStr );

        if($tmpStr == $signature)
            return true;
        else
            return false;

后端完整代码

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<?php

namespace addons\shopro\controller;

use addons\shopro\library\Wechat as WechatLibrary;
use think\Request;

/**
 * 微信小程序客服接口
 */
class WechatKefu extends Base
{
    protected $noNeedLogin = ['*'];
    protected $noNeedRight = ['*'];
    protected $app = null;

    protected $Token = null;
    protected $EncodingAESKey = null;
    // https://api.weixin.qq.com/cgi-bin/token?grant_type=client_credential&appid=wx****&secret='***'; //替换成自己的小程序id和secret
    protected $get_accessToken_url = 'https://api.weixin.qq.com/cgi-bin/token?grant_type=client_credential'; // 获取accessToken
    protected $send_message_url = 'https://api.weixin.qq.com/cgi-bin/message/custom/send?access_token='; // 发送消息给用户，用于用户联系客服时自动回复，不让微信服务器自动转发

    public function __construct(Request $request = null)
    {
        parent::__construct($request);

        $this->Token = config('site.wechatKefuToken');
        $this->EncodingAESKey = config('site.wechatKefuEncodingAESKey');

        $wechat = new WechatLibrary('wxMiniProgram');
        $this->app = $wechat->getApp();
    }

    /**
     * 微信小程序客服对接、处理消息回复
     */
    public function index(){
        if (isset($_GET['echostr']))
            $this->valid();
        else
            $this->responseMsg();
    }

    // 验证token时使用 配置小程序后台->开发->开发管理->开发设置->消息推送
    private function valid(){
        $echoStr = $_GET["echostr"];
        if($this->checkSignature()){
            header('content-type:text');
            echo $echoStr; // 成功
            exit;
        }else{
            exit('fail! '.$echoStr.'+++'.$this->Token); // 失败
        }
    }

    // 配置小程序->消息推送->token验证时启用
    private function checkSignature(){
        $signature = $_GET["signature"];
        $timestamp = $_GET["timestamp"];
        $nonce = $_GET["nonce"];

        $tmpArr = array($this->Token, $timestamp, $nonce);
        sort($tmpArr, SORT_STRING);
        $tmpStr = implode( $tmpArr );
        $tmpStr = sha1( $tmpStr );

        if($tmpStr == $signature)
            return true;
        else
            return false;
    }

    // 发送消息
    private function responseMsg(){
        $postStr = file_get_contents('php://input');

        if(empty($postStr) && !is_string($postStr)){
            echo "";
            exit;
        }

        //禁止引用外部xml实体
        //libxml_disable_entity_loader(true);
        //$postObj = simplexml_load_string($postStr, 'SimpleXMLElement', LIBXML_NOCDATA);
        $postArr =json_decode($postStr,true);

        $fromUsername =$postArr['FromUserName']; //发送者openid
        $toUserName =$postArr['ToUserName']; //小程序id
        if(!empty($postArr['MsgType']) &&$postArr['MsgType'] =='text'){//文本消息
            $textTpl =array(
                "ToUserName"=>$fromUsername,
                "FromUserName"=>$toUserName,
                "CreateTime"=>$_SERVER['REQUEST_TIME'],
                "MsgType"=>"transfer_customer_service",
            );

            exit(json_encode($textTpl));
        }elseif(!empty($postArr['MsgType']) &&$postArr['MsgType'] =='image'){//图文消息
            $textTpl =array(
                "ToUserName"=>$fromUsername,
                "FromUserName"=>$toUserName,
                "CreateTime"=>$_SERVER['REQUEST_TIME'],
                "MsgType"=>"transfer_customer_service",
            );
            exit(json_encode($textTpl));
        }elseif($postArr['MsgType'] =='event' &&$postArr['Event']=='user_enter_tempsession'){//进入客服动作
            $content ='您好，有什么能帮助你?';
            $data=array(
                "touser"=>$fromUsername,
                "msgtype"=>"text",
                "text"=>array("content"=>$content)
            );
            $json =json_encode($data,JSON_UNESCAPED_UNICODE);

            $this->requestAPI($json);
        }else
            exit('Error,未知类型会话');

    }

    // 发送消息到指定
    private function requestAPI($json){
        $access_token = $this->get_accessToken();
        $this->send_message_url = $this->send_message_url.$access_token; // 发送消息  POST发送https请求客服接口api

        //以'json'格式发送post的https请求
        $curl = curl_init();
        curl_setopt($curl, CURLOPT_URL, $this->send_message_url);
        curl_setopt($curl, CURLOPT_POST, 1); // 发送一个常规的Post请求
        curl_setopt($curl, CURLOPT_SSL_VERIFYPEER, FALSE);
        curl_setopt($curl, CURLOPT_SSL_VERIFYHOST, FALSE);
        if (!empty($json))
            curl_setopt($curl, CURLOPT_POSTFIELDS,$json);

        curl_setopt($curl, CURLOPT_RETURNTRANSFER, 1);
        //curl_setopt($curl, CURLOPT_HTTPHEADER, $headers );
        $output = curl_exec($curl);
        if (curl_errno($curl))
            echo 'Errno'.curl_error($curl);//捕抓异常

        curl_close($curl);

        if($output == 0) {
            echo 'success';
            exit;
        }
    }

    // 调用微信api，获取access_token，有效期7200s
    private function get_accessToken(){
        $url = $this->get_accessToken_url.'&appid='.$this->app->config['app_id'].'&secret='.$this->app->config['secret']; //替换成自己的小程序id和secret
        @$weixin = file_get_contents($url);
        @$jsondecode = json_decode($weixin);
        @$array = get_object_vars($jsondecode);
        $token = $array['access_token'];
        return $token;
    }

}

参考资料：

 Comments
  1. 1. 前言
  2. 2. 部署
    1. 2.0.1. 一，验证token