java微信开发入门第一讲

来源：互联网发布：XMLHttpRequest VB方法编辑：程序博客网时间：2024/05/16 01:35

微信开发首先必须要有一个web服务器来验证你的信息，所以我们首先要申请一个服务器

1.服务器申请

我们可以的到福佳jsp申请一个php或者Java的空间，申请哪个都可以，不影响使用，我们使用php空间，这里的验证代码在微信官网提供了，所以我们直接上传就可以了

<?php
/**
* wechat php test
*/

//define your token
define("TOKEN", "weixin");
$wechatObj = new wechatCallbackapiTest();
$wechatObj->valid();

class wechatCallbackapiTest
{
   public function valid()
    {
        $echoStr = $_GET["echostr"];

        //valid signature , option
        if($this->checkSignature()){
           echo $echoStr;
           exit;
        }
    }

    public function responseMsg()
    {
       //get post data, May be due to the different environments
       $postStr = $GLOBALS["HTTP_RAW_POST_DATA"];

         //extract post data
       if (!empty($postStr)){
                /* libxml_disable_entity_loader is to prevent XML eXternal Entity Injection,
                   the best way is to check the validity of xml by yourself */
                libxml_disable_entity_loader(true);
                 $postObj = simplexml_load_string($postStr, 'SimpleXMLElement', LIBXML_NOCDATA);
                $fromUsername = $postObj->FromUserName;
                $toUsername = $postObj->ToUserName;
                $keyword = trim($postObj->Content);
                $time = time();
                $textTpl = "<xml>
                           <ToUserName><![CDATA[%s]]></ToUserName>
                           <FromUserName><![CDATA[%s]]></FromUserName>
                           <CreateTime>%s</CreateTime>
                           <MsgType><![CDATA[%s]]></MsgType>
                           <Content><![CDATA[%s]]></Content>
                           <FuncFlag>0</FuncFlag>
                           </xml>";
               if(!empty( $keyword ))
                {
                     $msgType = "text";
                   $contentStr = "Welcome to wechat world!";
                   $resultStr = sprintf($textTpl, $fromUsername, $toUsername, $time, $msgType, $contentStr);
                   echo $resultStr;
                }else{
                   echo "Input something...";
                }

        }else {
           echo "";
           exit;
        }
    }

   private function checkSignature()
   {
        // you must define TOKEN by yourself
        if (!defined("TOKEN")) {
            throw new Exception('TOKEN is not defined!');
        }

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

       $token = TOKEN;
       $tmpArr = array($token, $timestamp, $nonce);
        // use SORT_STRING rule
       sort($tmpArr, SORT_STRING);
       $tmpStr = implode( $tmpArr );
       $tmpStr = sha1( $tmpStr );

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

?>

2.申请微信公众平台测试账号

打开浏览器，这里以IE为例。输入：http://mp.weixin.qq.com/debug/cgi-bin/sandbox?t=sandbox/login

填写配置信息

这样环境就配置好了，接下来我们可以编写代码了

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