java - 获取 PayPal 余额 (GetBalance API)

Question

我已经在 PayPal 文档中搜索了两个小时，但找不到答案，甚至搜索了 Google。

在这里检查: https://developer.paypal.com/docs/api/#api-operations

我已经在 Maven (REST API) 中添加了 PayPal 的 SDK，现在我不确定该怎么做。

我想使用 PayPal API(所有货币)获取账户余额。

Answer 1

GetBalance来自Classsic API，目前还没有包含在REST API中，但是你可以像这样直接用HTTPRequest实现NVP调用，

API 端点:

https://api-3t.paypal.com/nvp

POST 请求负载:

USER=seller_api1.paypal.com
&PWD=56A9R4JPVFPMER2X
&SIGNATURE=AFcWxV21C7fd0v3bYYYRCpSSRl31AociN2kspFBnMbzOGg6NdiC7ZXtg
&VERSION=109.0
&METHOD=GetBalance
&RETURNALLCURRENCIES=1

响应:

L_AMT0=265.17
L_CURRENCYCODE0=USD
TIMESTAMP=2015-08-09T14:21:25Z
CORRELATIONID=802b0b6666022
ACK=Success
VERSION=109.0
BUILD=000000

您还可以获得 Classic API SDKs使用您喜欢的编程语言，这次选择“Merchant”SDK。

我的示例 PHP 代码可帮助您理解流程，

<?php
$version = "124";
$user = "API UserName";
$pwd = "API Password";
$signature = "API Signature";
$API_Endpoint = "https://api-3t.sandbox.paypal.com/nvp";

$resArray = CallGetBalance ( $API_Endpoint, $version, $user, $pwd, $signature );
$ack = strtoupper ( $resArray ["ACK"] );
if ($ack == "SUCCESS") {
    $balance = urldecode ( $resArray ["L_AMT0"] );
    $currency = urldecode ( $resArray ["L_CURRENCYCODE0"] );
    echo "Account Balance: " . $balance . " " . $currency;
}


function CallGetBalance($API_Endpoint, $version, $user, $pwd, $signature) {
    // setting the curl parameters.
    $ch = curl_init ();
    curl_setopt ( $ch, CURLOPT_URL, $API_Endpoint );
    curl_setopt ( $ch, CURLOPT_VERBOSE, 1 );
    curl_setopt ( $ch, CURLOPT_SSL_VERIFYPEER, FALSE );
    curl_setopt ( $ch, CURLOPT_SSL_VERIFYHOST, FALSE );
    curl_setopt ( $ch, CURLOPT_RETURNTRANSFER, 1 );
    curl_setopt ( $ch, CURLOPT_POST, 1 );

    // NVPRequest for submitting to server
    $nvpreq = "METHOD=GetBalance" . "&RETURNALLCURRENCIES=1" . "&VERSION=" . $version . "&PWD=" . $pwd . "&USER=" . $user . "&SIGNATURE=" . $signature;
    curl_setopt ( $ch, CURLOPT_POSTFIELDS, $nvpreq );
    $response = curl_exec ( $ch );

    $nvpResArray = deformatNVP ( $response );

    curl_close ( $ch );

    return $nvpResArray;
}

/*
 * This function will take NVPString and convert it to an Associative Array and it will decode the response. It is usefull to search for a particular key and displaying arrays. @nvpstr is NVPString. @nvpArray is Associative Array.
 */
function deformatNVP($nvpstr) {
    $intial = 0;
    $nvpArray = array ();

    while ( strlen ( $nvpstr ) ) {
        // postion of Key
        $keypos = strpos ( $nvpstr, '=' );
        // position of value
        $valuepos = strpos ( $nvpstr, '&' ) ? strpos ( $nvpstr, '&' ) : strlen ( $nvpstr );

        /* getting the Key and Value values and storing in a Associative Array */
        $keyval = substr ( $nvpstr, $intial, $keypos );
        $valval = substr ( $nvpstr, $keypos + 1, $valuepos - $keypos - 1 );
        // decoding the respose
        $nvpArray [urldecode ( $keyval )] = urldecode ( $valval );
        $nvpstr = substr ( $nvpstr, $valuepos + 1, strlen ( $nvpstr ) );
    }
    return $nvpArray;
}

?>