//支付宝充值操作

	public function pay()

	{

		$config = C('Alipay');

		//异步通知地址

		$config['notify_url'] = "";

		//同步跳转

		$config['return_url'] = "";

		Vendor('Alipay.pagepay.service.AlipayTradeService');

		Vendor('Alipay.pagepay.buildermodel.AlipayTradePagePayContentBuilder');

	    //商户订单号，商户网站订单系统中唯一订单号，必填

	    $out_trade_no = trim(I('post.WIDout_trade_no'));

	    //订单名称，必填

	    $subject = trim(I('post.WIDsubject'));

	    //付款金额，必填

	    $total_amount = trim(I('post.WIDtotal_amount'));

	    //商品描述，可空

	    $body = trim(I('post.WIDbody'));

	    $ud = session('users.uid');

	    $data = array(

				'uid'=>$ud,	  							//用户id

				'win_code'=>$out_trade_no, 				//商户订单号

				'winsubject'=>$subject,	  				//订单名称

				'wintotal_amount'=>$total_amount,	    //付款金额

				'winbody'=>$body,	 					//商品描述

				'state'=>'zfb',	  						//支付方式

				'status'=>'0',	  						//是否支付

				'ordertime'=>time()	  					//交易时间

			);

	    M("pay_record")->add($data); // 保存交易信息

		//构造参数

		$payRequestBuilder = new \AlipayTradePagePayContentBuilder();

		$payRequestBuilder->setBody($body);

		$payRequestBuilder->setSubject($subject);

		$payRequestBuilder->setTotalAmount($total_amount);

		$payRequestBuilder->setOutTradeNo($out_trade_no);

		$aop = new \AlipayTradeService($config);

		$response = $aop->pagePay($payRequestBuilder,$config['return_url'],$config['notify_url']);

		//输出表单

		// var_dump($response);

	}