thinkphp接入支付宝微信核心代码

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class WxpayMobile extends Action{
       //在类初始化方法中，引入相关类库    
    public function _initialize() {
        header("Content-type:text/html;charset=utf-8");
        vendor('WxPayPubHelper.SDKRuntimeException'); 
        define("APPID", C('WX_APPID'));
        define("MCHID", C('WX_MCHID'));
        define("KEY", C('WX_KEY'));
        define("APPSECRET", C('WX_APPSECRET'));
        define("JS_API_CALL_URL", C('site_url').U('Wxpay/wap_dowxpay'));
        define('SSLCERT_PATH',C('site_url').'/Framework/Extend/Vendor/WxPayPubHelper/cacert/apiclient_cert.pem');
        define('SSLKEY_PATH',C('site