PayPal接口查询账户各币种余额

程序员文章站 2022-11-23 11:00:03

PayPal查询账户各币种余额一、废话不多说，先上代码import javax.net.ssl.HttpsURLConnection;import java.io.BufferedReader;import java.io.DataOutputStream;import java.io.InputStreamReader;import java.math.BigDecimal;import java.net.URL;import java.net.URLDecoder;import jav...

PayPal接口查询账户各币种余额

一、废话不多说，先上代码

import javax.net.ssl.HttpsURLConnection;
import java.io.BufferedReader;
import java.io.DataOutputStream;
import java.io.InputStreamReader;
import java.math.BigDecimal;
import java.net.URL;
import java.net.URLDecoder;
import java.util.HashMap;
import java.util.Map;

public class PayPalBalances {
    private final String USER_AGENT = "Mozilla/5.0";
    // 请求url
    private String url;
    // 账户api用户名
    private String userName;
    // 账户api密码
    private String pwd;
    // 账户api signature
    private String signature;
    /**
     * 返回币种选项
     * 0 只返回主币种
     * 1 返回所有拥有的币种
     */
    private final Integer RETURN_ALL_CURRENCIES = 1;

    public PayPalBalances(){}

    public PayPalBalances(String url, String userName, String pwd, String signature) {
        this.url = url;
        this.userName = userName;
        this.pwd = pwd;
        this.signature = signature;
    }

    public void getPayPalBalances() throws Exception {
        URL obj = new URL(url);
        HttpsURLConnection con = (HttpsURLConnection) obj.openConnection();

        //添加请求头
        con.setRequestMethod("POST");
        con.setRequestProperty("User-Agent", USER_AGENT);
        con.setRequestProperty("Accept-Language", "en-US,en;q=0.5");

        String urlParameters = "USER=" + userName +
                "&PWD=" + pwd +
                "&SIGNATURE=" + signature +
                "&VERSION=109.0" +
                "&METHOD=GetBalance" +
                "&RETURNALLCURRENCIES" + RETURN_ALL_CURRENCIES;

        //发送Post请求
        con.setDoOutput(true);
        DataOutputStream wr = new DataOutputStream(con.getOutputStream());
        wr.writeBytes(urlParameters);
        wr.flush();
        wr.close();

        int responseCode = con.getResponseCode();
        System.out.println("\nSending 'POST' request to URL : " + url);
        System.out.println("Post parameters : " + urlParameters);
        System.out.println("Response Code : " + responseCode);

        BufferedReader in = new BufferedReader(
                new InputStreamReader(con.getInputStream()));
        String inputLine;
        StringBuffer response = new StringBuffer();

        while ((inputLine = in.readLine()) != null) {
            response.append(inputLine);
        }
        in.close();
        // 处理返回值
        String responseData = response.toString();
        responseData = URLDecoder.decode(responseData, "UTF-8");
        String[] arr = responseData.split("&");
        Map<String, BigDecimal> balanceMap = new HashMap<>();
        BigDecimal[] amount = new BigDecimal[100];
        String[] currency = new String[100];
        int length = 0;
        for(String s : arr) {
            if(s.startsWith("L_AMT")) {
                s = s.replace("L_AMT","");
                Integer i = Integer.parseInt(s.substring(0, s.indexOf("=")));
                amount[i] = new BigDecimal(s.substring(s.indexOf("=")+1));
                length++;
            } else {
                if(s.startsWith("L_CURRENCYCODE")) {
                    s = s.replace("L_CURRENCYCODE","");
                    Integer j = Integer.parseInt(s.substring(0, s.indexOf("=")));
                    currency[j] = s.substring(s.indexOf("=") + 1);
                }
            }

        }

        for(int i = 0; i < length; i++) {
            System.out.println("币种：" + currency[i] + " 余额：" + amount[i]);
        }
    }

    public static void main(String[] args) {
        // 沙盒 https://api-3t.sandbox.paypal.com/nvp
        // 正式 https://api-3t.paypal.com/nvp
        String url = "https://api-3t.sandbox.paypal.com/nvp";
        String userName = "userName";
        String pwd = "pwd";
        String signature = "sginature";

        PayPalBalances payPalBalances = new PayPalBalances(url, userName, pwd, signature);

        try {
            payPalBalances.getPayPalBalances();
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
}