跟我一起学微信之微信接入以及access_token的获取

  昨天1块钱买了一个阿里的ECS,一个月是的使用时间。好了,现在可以用它来研究一下微信。之前自己有搞过一个微信公众账号,好久没去弄了,之前也没怎么好好的研究,现在就正式开始吧。至于配置服务器啥的,我就不说了。首先你要自己去申请一个公用测试账号,这样的话权限会比较多。填写你的URL以及TOKEN就行了。我是选择的tp5框架,在index模块下添加了一个Access.php这个文件来验证注册:

 1 <?php
 2 // +----------------------------------------------------------------------
 3 // | snake
 4 // +----------------------------------------------------------------------
 5 // | Copyright (c) 2016~2022 http://baiyf.cn All rights reserved.
 6 // +----------------------------------------------------------------------
 7 // | Licensed ( http://www.apache.org/licenses/LICENSE-2.0 )
 8 // +----------------------------------------------------------------------
 9 // | Author: NickBai <1902822973@qq.com>
10 // +----------------------------------------------------------------------
11 namespace app\index\controller;
12 
13 use think\Controller;
14 
15 class Access extends Controller
16 {
17     public $token = 'weixin';
18     public function index()
19     {
20         $echoStr = input('param.echostr');
21         //valid signature , option
22         if( $this->checkSignature() ){
23             echo $echoStr;
24             exit;
25         }
26     }
27 
28     public function responseMsg()
29     {
30         //get post data, May be due to the different environments
31         $postStr = $GLOBALS["HTTP_RAW_POST_DATA"];
32 
33         //extract post data
34         if (!empty($postStr)){
35                 /* libxml_disable_entity_loader is to prevent XML eXternal Entity Injection,
36                    the best way is to check the validity of xml by yourself */
37                 libxml_disable_entity_loader(true);
38                 $postObj = simplexml_load_string($postStr, 'SimpleXMLElement', LIBXML_NOCDATA);
39                 $fromUsername = $postObj->FromUserName;
40                 $toUsername = $postObj->ToUserName;
41                 $keyword = trim($postObj->Content);
42                 $time = time();
43                 $textTpl = "<xml>
44                             <ToUserName><![CDATA[%s]]></ToUserName>
45                             <FromUserName><![CDATA[%s]]></FromUserName>
46                             <CreateTime>%s</CreateTime>
47                             <MsgType><![CDATA[%s]]></MsgType>
48                             <Content><![CDATA[%s]]></Content>
49                             <FuncFlag>0</FuncFlag>
50                             </xml>";             
51                 if(!empty( $keyword ))
52                 {
53                     $msgType = "text";
54                     $contentStr = "Welcome to wechat world!";
55                     $resultStr = sprintf($textTpl, $fromUsername, $toUsername, $time, $msgType, $contentStr);
56                     echo $resultStr;
57                 }else{
58                     echo "Input something...";
59                 }
60 
61         }else {
62             echo "test,,,,";
63             exit;
64         }
65     }
66         
67     private function checkSignature()
68     {
69         
70         $param = input('param.');
71 
72         $signature = $param["signature"];
73         $timestamp = $param["timestamp"];
74         $nonce = $param["nonce"];
75                 
76         $tmpArr = array( $this->token, $timestamp, $nonce );
77         // use SORT_STRING rule
78         sort($tmpArr, SORT_STRING);
79         $tmpStr = implode( $tmpArr );
80         $tmpStr = sha1( $tmpStr );
81         
82         if( $tmpStr == $signature ){
83             return true;
84         }else{
85             return false;
86         }
87     }
88 
89 }

  根据官方给的例子直接改写了一点,这边不做过多的解释。我的URL是这样填写的 http://wx.baiyf.com/index/Access , TOKEN值是: weixin,提交提示成功,就代表接入成功了,否则会报出接入失败!自己看一下原因。

  下面来进入第二步,获取access_token,什么是access_token呢,看一下官方的解释:access_token是公众号的全局唯一接口调用凭据,公众号调用各接口时都需使用access_token。开发者需要进行妥善保存。access_token的存储至少要保留512个字符空间。access_token的有效期目前为2个小时,需定时刷新,重复获取将导致上次获取的access_token失效。

   由此可以看出access_token还是挺重要的。实效是2个小时,但是只要你请求一次,系统都会换一次,每个人每天获取access_token的次数是有限制的。所以在2个小时的有效期内,尽量的利用起来,不要盲目的去重复获取。我采用的是用文件的方式存储这些access_token。同样是TP5框架:其中我在common.php文件中写了获取token的公用方法:

 1 <?php
 2 // +----------------------------------------------------------------------
 3 // | 微信学习测试
 4 // +----------------------------------------------------------------------
 5 // | Copyright (c) 2016~2022 http://baiyf.cn All rights reserved.
 6 // +----------------------------------------------------------------------
 7 // | Licensed ( http://www.apache.org/licenses/LICENSE-2.0 )
 8 // +----------------------------------------------------------------------
 9 // | Author: NickBai <1902822973@qq.com>
10 // +----------------------------------------------------------------------
11 // 应用公共文件
12 function getToken( $url )
13 {
14     if( file_exists(APP_PATH . '/token.log') ){
15 
16         $accData = unserialize( file_get_contents( APP_PATH . '/token.log' ) );
17 
18         if( ( time() - $accData['time'] ) > 7200 ){
19             $token = setToken( $url );
20 
21             if( 1 != $token['code'] ){
22                 return $token;
23             }
24 
25             $token = $token['token'];
26 
27         }else{
28 
29             $token = $accData['token'];
30         }
31 
32     }else{
33 
34         $token = setToken( $url );
35 
36         if( 1 != $token['code'] ){
37             return $token;
38         }
39 
40         $token = $token['token'];
41     }
42 
43     return ['code' => 1, 'token' => $token];
44 }
45 
46 //写入token值
47 function setToken( $url )
48 {
49     $ch   = curl_init($url);              //初始化curl
50     curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);        //返回数据不直接输出
51     curl_setopt($ch, CURLOPT_POST, 1);                  //发送POST类型数据
52     curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);    //SSL 报错时使用
53     curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, false);    //SSL 报错时使用
54     $contents = curl_exec($ch);                              //执行并存储结果
55     // var_dump(curl_error($ch));                       //获取失败是使用(采集错误提示)
56     curl_close($ch);
57 
58     $res = json_decode( $contents, true );
59     if( isset( $res['errcode'] ) ){
60         return ['code' => $res['errcode'], 'token' => 'invalid appid'];
61     }
62 
63     $token = $res['access_token'];
64 
65     $putData = [
66         'token' => $token,
67         'time' => time()
68     ];
69 
70     file_put_contents(  APP_PATH . '/token.log', serialize( $putData ));
71 
72     return ['code' => 1, 'token' => $token];
73 }

  这样的话,在每个位置都可以方便的获取token值了,你可以在index.php控制器中这样调用:

 1 <?php
 2 // +----------------------------------------------------------------------
 3 // | 微信学习测试
 4 // +----------------------------------------------------------------------
 5 // | Copyright (c) 2016~2022 http://baiyf.cn All rights reserved.
 6 // +----------------------------------------------------------------------
 7 // | Licensed ( http://www.apache.org/licenses/LICENSE-2.0 )
 8 // +----------------------------------------------------------------------
 9 // | Author: NickBai <1902822973@qq.com>
10 // +----------------------------------------------------------------------
11 namespace app\index\controller;
12 
13 use think\Controller;
14 
15 class Index extends Controller
16 {
17     public function index()
18     {
19         print_r( getToken( config('TOKENURL') ) );
20     }
21 
22 }

  结果如下:

Array ( [code] => 1 [token] => JI1NTcD6ngiqn52p3iuD0sxfKJ0N44mUAZpZ46MK1aIf3TMUyEoL2hLkbJ-Z8BaenxkYbiM6K1LKl7IIjtI8Y43Hk_RTAD2ksj9zLyBjNIqzE-TGMFa0EL-SLdioBAowTFGhAGABNO )

  可以看到我的很多文件都采取的配置模式,因为一些秘钥都是固定的,你可以在config.php文件中像我这样去配置:

  

 1 <?php
 2 // +----------------------------------------------------------------------
 3 // | 微信学习测试
 4 // +----------------------------------------------------------------------
 5 // | Copyright (c) 2016~2022 http://baiyf.cn All rights reserved.
 6 // +----------------------------------------------------------------------
 7 // | Licensed ( http://www.apache.org/licenses/LICENSE-2.0 )
 8 // +----------------------------------------------------------------------
 9 // | Author: NickBai <1902822973@qq.com>
10 // +----------------------------------------------------------------------
11 
12 return [
13     
14     // +----------------------------------------------------------------------
15     // | 应用设置
16     // +----------------------------------------------------------------------
17     'APPID' => '',    //你的appid
18     'APPSECRET' => '', //你的appsecret
19     'TOKENURL' => 'https://api.weixin.qq.com/cgi-bin/token?grant_type=client_credential&appid= YOURAPPID  &secret= YOUR APPSECRET',
20 ];

 

posted @ 2016-08-23 10:27  NickBai  阅读(2214)  评论(0编辑  收藏  举报