我是集成亚马逊结帐付款按钮代码如下。
<form action="https://authorize.payments-sandbox.amazon.com/pba/paypipeline" method="post">
<input type="hidden" name="returnUrl" value="http://abcd.com/abcd.php" >
<input type="hidden" name="processImmediate" value="1" >
<input type="hidden" name="signatureMethod" value="" >
<input type="hidden" name="accessKey" value="" >
<input type="hidden" name="collectShippingAddress" value="0" >
<input type="hidden" name="isDonationWidget" value="0" >
<input type="hidden" name="amazonPaymentsAccountId" value="" >
<input type="hidden" name="cobrandingStyle" value="logo" >
<input type="hidden" name="immediateReturn" value="1" >
<input type="hidden" name="amount" value="USD 10" >
<input type="hidden" name="description" value="product payment" >
<input type="hidden" name="abandonUrl" value="http://abcd.com/abcd.php" >
<input type="hidden" name="signatureVersion" value="2" >
<input type="hidden" name="signature" value="" >
<input type="image" src="http://g-ecx.images-amazon.com/images/G/01/asp/beige_small_paynow_withmsg_whitebg.gif" border="0">
</form>
在那个按钮表单中<input type="hidden" name="amount" value="USD 10" >
,当我将其更改为其他一些值时,会出现错误,例如
无效请求错误消息:
输入参数签名无效
我该如何解决这个问题