我从贝宝沙盒中获得身份验证失败，我将请求作为名称值对发送到贝宝..
代码如下：`
final String PayPalConstants.ENCODE_TYPE="UTF-8";
final StringBuffer encodedStringBuffer = new StringBuffer();
encodedStringBuffer.append("X-PAYPAL-SECURITY-USERID=" + URLEncoder.encode(getAdaptivePaymentUserName(), PayPalConstants.ENCODE_TYPE) + "&");
encodedStringBuffer.append("X-PAYPAL-SECURITY-PASSWORD=" + URLEncoder.encode(getAdaptivePaymentPassword(), PayPalConstants.ENCODE_TYPE) + "&");
if (!isUseCert()) {
encodedStringBuffer.append("X-PAYPAL-SECURITY-SIGNATURE=" + URLEncoder.encode(getAdaptivePaymentSignature(), PayPalConstants.ENCODE_TYPE) + "&");
}
// encodedStringBuffer.append("BUTTONSOURCE=" +
// URLEncoder.encode(PayPalConstants.BUTTONSOURCE,
// PayPalConstants.ENCODE_TYPE) + "&");
encodedStringBuffer.append("X-PAYPAL-REQUEST-DATA-FORMAT=" + URLEncoder.encode("NV", PayPalConstants.ENCODE_TYPE) + "&");
encodedStringBuffer.append("X-PAYPAL-RESPONSE-DATA-FORMAT=" + URLEncoder.encode("NV", PayPalConstants.ENCODE_TYPE) + "&");
encodedStringBuffer.append("X-PAYPAL-APPLICATION-ID=" + URLEncoder.encode(getAdaptivePaymentAppId(), PayPalConstants.ENCODE_TYPE) + "&");
final PostMethod httpPost = new PostMethod(this.adaptivePaymentRestURL.getPath());
httpPost.setRequestEntity(new StringRequestEntity(encodedStringBuffer.toString(), "text/html", PayPalConstants.ENCODE_TYPE));
final int result = this.adaptivePaymentHttpClient.executeMethod(httpPost);
if (result == 200) {
response = httpPost.getResponseBodyAsString();
}
响应值如下：
<?xml version='1.0' encoding='UTF-8'?>
<ns3:FaultMessage xmlns:ns3="http://svcs.paypal.com/types/common" xmlns:ns2="http://svcs.paypal.com/types/ap">
<responseEnvelope>
<timestamp>2013-08-21T00:20:51.291-07:00</timestamp>
<ack>Failure</ack>
<correlationId>e3325********</correlationId>
<build>694****</build>
</responseEnvelope>
<error>
**<errorId>520003</errorId>**
<domain>PLATFORM</domain>
<subdomain>Application</subdomain>
<severity>Error</severity>
<category>Application</category>
<message>Authentication failed. API credentials are incorrect.</message>
</error>
</ns3:FaultMessage>
所以谁能告诉我我做错了什么？输入字符串缓冲区是否是此 Web 服务的错误数据类型。请帮帮我..我对此完全感到困惑。
提前致谢。