使用 Java 将 Paypal 集成到 Web 应用程序中
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【中文标题】使用 Java 将 Paypal 集成到 Web 应用程序中【英文标题】：Integrate Paypal in Web Application using Java 【发布时间】：2011-12-20 23:07:20 【问题描述】：我想将 paypal 集成到我的 Web 应用程序中。我正在使用 RESTEasy API 来处理宁静的请求。我想知道如何在我的应用程序中集成贝宝。我已经从他们的网站下载了 paypal java sdk，但现在我没有很好的应用程序可以帮助我将 paypal 集成到我的应用程序中。任何人都可以推荐任何网站，在网站中逐步集成贝宝或简单易懂吗？
【问题讨论】：
【参考方案1】：Paypal 提供了一些examples 甚至是wizard，它们会为您生成一些代码。
在之前的链接下线后，从这个小教程开始：https://developer.paypal.com/docs/checkout/integrate/#
【讨论】：
【参考方案2】：我们必须按照以下步骤在 java web 应用程序中配置 paypal。这里我展示了 Paypal 到 Paypal 和 CreditCard 到 Paypal 支付的配置。
1.创建一个沙盒帐户。 2.创建网络应用程序。 3.将以下struts2操作与您的代码集成。如果您想与任何其他操作一起使用，则只需采用方法并直接使用。
public class PaypalAction extends ActionSupport implements SessionAware
private static final long serialVersionUID = 1L;
private String resultString;
private String token;
@SuppressWarnings("rawtypes")
private Map finalMap = new HashMap();
public void paypalPay()
HttpServletRequest request = ServletActionContext.getRequest();
HttpServletResponse response = ServletActionContext.getResponse();
Integer payPercent = 10;
Map result = new HashMap();
String data1 = "";
try
data1 = URLEncoder.encode("USER", "UTF-8") + "="+ URLEncoder.encode("Sandbox UserName","UTF-8");
data1 += "&" + URLEncoder.encode("PWD", "UTF-8") + "="+ URLEncoder.encode("Sandbox Password", "UTF-8");
data1 += "&" + URLEncoder.encode("SIGNATURE", "UTF-8") + "="+ URLEncoder.encode("Sandbox Signature","UTF-8");
data1 += "&" + URLEncoder.encode("METHOD", "UTF-8") + "="+ URLEncoder.encode("SetExpressCheckout", "UTF-8");
data1 += "&" + URLEncoder.encode("RETURNURL", "UTF-8") + "=" + URLEncoder.encode(request.getRequestURL().toString().replaceAll(request.getServletPath(), "") + "/successPage","UTF-8");
data1 += "&" + URLEncoder.encode("CANCELURL", "UTF-8") + "="+ URLEncoder.encode(request.getRequestURL().toString().replaceAll(request.getServletPath(), "") + "/failurePage", "UTF-8");
data1 += "&" + URLEncoder.encode("VERSION", "UTF-8") + "="+ URLEncoder.encode("104.0", "UTF-8");
data1 += "&" + URLEncoder.encode("AMT", "UTF-8")+ "=" + URLEncoder.encode("10", "UTF-8");
data1 += "&" + URLEncoder.encode("CURRENCYCODE", "UTF-8") + "=" + URLEncoder.encode("USD", "UTF-8");
data1 += "&" + URLEncoder.encode("L_NAME0", "UTF-8") + "=" + URLEncoder.encode("Sample Test", "UTF-8");
data1 += "&" + URLEncoder.encode("L_AMT0", "UTF-8") + "=" + URLEncoder.encode("10", "UTF-8");
data1 += "&" + URLEncoder.encode("CUSTOM", "UTF-8") + "="+ URLEncoder.encode("Thank You For business","UTF-8");
data1 += "&" + URLEncoder.encode("DESC", "UTF-8") + "=" + URLEncoder.encode("Product Details", "UTF-8");
data1 += "&" + URLEncoder.encode("NOSHIPPING", "UTF-8") + "="+ URLEncoder.encode("1", "UTF-8");
catch (UnsupportedEncodingException e)
e.printStackTrace();
result = post(data1);
Iterator<?> iter = result.entrySet().iterator();
while (iter.hasNext())
Map.Entry mEntry = (Map.Entry) iter.next();
if(result!=null)
token = (String) result.get("TOKEN");
String url = "https://www.sandbox.paypal.com/cgi-bin/webscr?cmd=_express"+ "-" + "checkout&token=" + (String) result.get("TOKEN");
try
response.sendRedirect(url);
catch (IOException e)
e.printStackTrace();
public String successPage()
HttpServletRequest request = ServletActionContext.getRequest();
String payerID = request.getParameter("PayerID");
String token=request.getParameter("token");
doPaypalPayment(payerID,token);
return "success";
public String failurePage()
return "failurePage";
public void doPaypalPayment(String payerID, String token2)
Map result = new HashMap();
String data = "";
try
data1 = URLEncoder.encode("USER", "UTF-8") + "="+ URLEncoder.encode("Sandbox UserName","UTF-8");
data1 += "&" + URLEncoder.encode("PWD", "UTF-8") + "="+ URLEncoder.encode("Sandbox Password", "UTF-8");
data1 += "&" + URLEncoder.encode("SIGNATURE", "UTF-8") + "="+ URLEncoder.encode("Sandbox Signature","UTF-8");
data += "&" + URLEncoder.encode("METHOD", "UTF-8") + "="+ URLEncoder.encode("DoExpressCheckoutPayment", "UTF-8");
data += "&" + URLEncoder.encode("PAYERID", "UTF-8") + "="+ URLEncoder.encode(payerID, "UTF-8");
data += "&" + URLEncoder.encode("PAYMENTACTION", "UTF-8") + "="+ URLEncoder.encode("Sale", "UTF-8");
data += "&" + URLEncoder.encode("TOKEN", "UTF-8") + "="+ URLEncoder.encode(token2, "UTF-8");
data += "&" + URLEncoder.encode("AMT", "UTF-8") + "="+ URLEncoder.encode("10", "UTF-8");
data += "&" + URLEncoder.encode("VERSION", "UTF-8") + "="+ URLEncoder.encode("104.0", "UTF-8");
data += "&" + URLEncoder.encode("CURRENCYCODE", "UTF-8") + "="+ URLEncoder.encode("USD", "UTF-8");
catch (UnsupportedEncodingException e)
e.printStackTrace();
result = post(data);
public void deformatNVP()
try
String delims = "[&]";
String equals = "[=]";
String[] tokens = this.resultString.split(delims);
for(int i = 0; i < tokens.length; i++)
String[] newTokens = tokens[i].split(equals);
this.finalMap.put(URLDecoder.decode(newTokens[0], "UTF-8"), URLDecoder.decode(newTokens[1], "UTF-8"));
catch (Exception e)
System.out.println(e.toString());
//return finalMap;
public Map post(String data)
try
//Connect to the url
URL url = new URL("https://api-3t.sandbox.paypal.com/nvp");
URLConnection conn = url.openConnection();
conn.setDoOutput(true);
OutputStreamWriter wr = new OutputStreamWriter(conn.getOutputStream());
//Post the data
wr.write(data);
wr.flush();
// Get the response
BufferedReader rd = new BufferedReader(new InputStreamReader(conn.getInputStream()));
this.resultString = rd.readLine();
deformatNVP();
wr.close();
rd.close();
catch (Exception e)
System.out.println(e.toString());
return finalMap;
@Override
public void setSession(Map<String, Object> arg0)
// TODO Auto-generated method stub
public void doPaypalPaymentWithCreditCard()
try
//Load the caller service
//Create a new map to hold the result
Map result = new HashMap();
// Construct data request string
String data1 = URLEncoder.encode("USER", "UTF-8") + "="+ URLEncoder.encode("Sandbox UserName","UTF-8");
data1 += "&" + URLEncoder.encode("PWD", "UTF-8") + "="+ URLEncoder.encode("Sandbox Password", "UTF-8");
data1 += "&" + URLEncoder.encode("SIGNATURE", "UTF-8") + "="+ URLEncoder.encode("Sandbox Signature","UTF-8"); data += "&" + URLEncoder.encode("METHOD", "UTF-8") + "=" + URLEncoder.encode("DoDirectPayment", "UTF-8");
data += "&" + URLEncoder.encode("AMT", "UTF-8") + "=" + URLEncoder.encode("20.10", "UTF-8");
data += "&" + URLEncoder.encode("VERSION", "UTF-8") + "=" + URLEncoder.encode("80.0", "UTF-8");
data += "&" + URLEncoder.encode("IPADDRESS", "UTF-8") + "=" + URLEncoder.encode("192.168.1.0", "UTF-8");
data += "&" + URLEncoder.encode("PAYMENTACTION", "UTF-8") + "=" + URLEncoder.encode("Sale", "UTF-8");
data += "&" + URLEncoder.encode("CREDITCARDTYPE", "UTF-8") + "=" + URLEncoder.encode("Visa", "UTF-8");
data += "&" + URLEncoder.encode("ACCT", "UTF-8") + "=" + URLEncoder.encode("4532513511140817", "UTF-8");
data += "&" + URLEncoder.encode("EXPDATE", "UTF-8") + "=" + URLEncoder.encode("102014", "UTF-8");
data += "&" + URLEncoder.encode("CVV2", "UTF-8") + "=" + URLEncoder.encode("123", "UTF-8");
data += "&" + URLEncoder.encode("FIRSTNAME", "UTF-8") + "=" + URLEncoder.encode("Jason", "UTF-8");
data += "&" + URLEncoder.encode("LASTNAME", "UTF-8") + "=" + URLEncoder.encode("Michels", "UTF-8");
data += "&" + URLEncoder.encode("STREET", "UTF-8") + "=" + URLEncoder.encode("123", "UTF-8");
data += "&" + URLEncoder.encode("CITY", "UTF-8") + "=" + URLEncoder.encode("Papillion", "UTF-8");
data += "&" + URLEncoder.encode("STATE", "UTF-8") + "=" + URLEncoder.encode("NE", "UTF-8");
data += "&" + URLEncoder.encode("ZIP", "UTF-8") + "=" + URLEncoder.encode("68046", "UTF-8");
data += "&" + URLEncoder.encode("COUNTRYCODE", "UTF-8") + "=" + URLEncoder.encode("US", "UTF-8");
result = post(data);
//This will iterate through the entire response map
Iterator iter = result.entrySet().iterator();
while (iter.hasNext())
Map.Entry mEntry = (Map.Entry) iter.next();
System.out.println(mEntry.getKey() + " : " + mEntry.getValue());
//Now that you have a response check to see if it is a success
String ack = "" + result.get("ACK");
if("Success".equals(ack))
System.out.println("Congratulations your transaction was a success");
else
System.out.println("There was an error with your request.");
catch (Exception e)
System.out.println(e.toString());
//end of main function
这对我来说很好用。希望它对那些想通过 paypal 配置付款的人有所帮助。
【讨论】：
能否请我们发布您的完整代码。我的意思是所有课程，以便像我这样刚接触 paypal 的人可以从中受益以上是关于使用 Java 将 Paypal 集成到 Web 应用程序中的主要内容，如果未能解决你的问题，请参考以下文章