问题描述
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我最近收到了达蒙·威廉姆斯（damon Williams）的书“ Pro Paypal E-Commerce”。它是2007年的副本，因此可以预期，随着时间的推移，某些事情（例如代码）会发生变化。
我正在尝试使下面的代码正常工作。我下载了paypal_base.jar文件，还下载了paypal_wpstoolkit.jar，并将它们放入jakarta-tomcat下的lib文件夹中（我的所有其他jar都放在其中）。我在编译代码时遇到问题。
此代码示例来自本书，也来自http://en.csharp-online.net/Encrypted_Website_Payments%E2%80%94Using_the_PayPal_Java_SDK
我做了些微修改。
import com.paypal.sdk.profiles.EWPProfile;
import com.paypal.sdk.profiles.ProfileFactory;
import com.paypal.wpstoolkit.services.EWPServices;
import com.paypal.sdk.exceptions.PayPalException;
public class PaypalTest {
// path to your PKCS12 file
public static final String PKCS12 = \"./Certs/my_pkcs12.p12\";
// path to PayPal\'s public certificate
public static final String PAYPAL_CERT = \"./Certs/paypal_cert_pem.txt\";
// use https://www.sandBox.paypal.com if testing
//public static final String URL = \"https://www.paypal.com\";
public static final String URL = \"https://sandBox.paypal.com\";
public static void main (String args[]) {
// Check to see if the user provided a password
if (args.length != 1) {
System.out.println(\"You must provide a password.\");
System.exit(0);
}
// password used to encrypt your PKCS12 files
// obtained from the command line
String USER_PASSWORD = args[0];
// First we will create the EWPProfile object
try {
com.paypal.sdk.profiles.EWPProfile ewpProfile = ProfileFactory.createEWPProfile();
ewpProfile.setCertificateFile(PKCS12);
ewpProfile.setPayPalCertificateFile(PAYPAL_CERT);
ewpProfile.setPrivateKeyPassword(USER_PASSWORD);
ewpProfile.setUrl(URL);
String buttonParameters = \"cmd=_xclick\\nbusiness=buyer@hotmail.com\\nitem_name=vase\\nitemprice=25.00\";
// Next we will create the EWPServices object
// and tell it which EWPProfile object to use
EWPServices ewpServices = new EWPServices();
ewpServices.setEWPProfile(ewpProfile);
// Finally we are ready to call the method to perform the button encryption
String encryptedButton = ewpServices.encryptButton(buttonParameters.getBytes());
System.out.println(encryptedButton);
} catch (PayPalException ppe) {
System.out.println(\"An exception occurred when creating the button.\");
ppe.printstacktrace();
}
}
}//class
java:51: cannot find symbol
symbol: method setEWPProfile(com.paypal.sdk.profiles.EWPProfile)
location: class com.paypal.wpstoolkit.services.EWPServices
ewpServices.setEWPProfile(ewpProfile);
java:55: encryptButton(byte[],java.lang.String,java.lang.String.,java.lang.String) in com.paypal.wpstoolkit.services.EWPServices cannot be applied to (byte[])
ewpServices.encryptButton(buttonParameters.getBytes());
paypal_base jar
NVPCallerServices.class
EWPServices
解决方法
可以在以下位置找到更新的Java SDK + API文档：
https://cms.paypal.com/cms_content/US/zh_CN/files/developer/PP_Java_NVP_SDK.zip
解压缩该.zip并打开docs / index.html
在那可以找到所有API文档。似乎您正在尝试调用不再存在的方法。浏览一下新课程，看看有什么适合您的。
, 看起来，使用较新API的Paypal时，您希望从其Web服务生成所有按钮代码，因为他们似乎已从SDK中删除了“ 6”类。但是后来我注意到它们仍然为您提供客户端实用程序，您可以在此处手动生成代码。稍作调整后，我就在那里得到了执行所需代码的代码（在本地加密上传购物车按钮）。
假设您使用Java 5+，只需确保在类路径中使用this和this。现在的代码已经不完美了，因为它包含了许多不赞成使用的方法，但是对于像加密按钮代码这样的琐碎任务，它就可以正常工作。
public String getButtonEncryptionValue(String _data,String _privateKeyPath,String _certPath,String _payPalCertPath,String _keyPass) throws IOException,CertificateException,KeyStoreException,UnrecoverableKeyException,InvalidAlgorithmParameterException,NoSuchAlgorithmException,NoSuchProviderException,CertStoreException,CMSException {
_data = _data.replace(\',\',\'\\n\');
CertificateFactory cf = CertificateFactory.getInstance(\"X509\",\"BC\");
// Read the Private Key
KeyStore ks = KeyStore.getInstance(\"PKCS12\",\"BC\");
ks.load(new FileInputStream(_privateKeyPath),_keyPass.toCharArray());
String keyAlias = null;
Enumeration<String> aliases = ks.aliases();
while (aliases.hasMoreElements()) {
keyAlias = aliases.nextElement();
}
PrivateKey privateKey = (PrivateKey) ks.getKey(keyAlias,_keyPass.toCharArray());
// Read the Certificate
X509Certificate certificate = (X509Certificate) cf
.generateCertificate(new FileInputStream(_certPath));
// Read the PayPal Cert
X509Certificate payPalCert = (X509Certificate) cf
.generateCertificate(new FileInputStream(_payPalCertPath));
// Create the Data
byte[] data = _data.getBytes();
// Sign the Data with my signing only key pair
CMSSignedDataGenerator signedGenerator = new CMSSignedDataGenerator();
signedGenerator.addSigner(privateKey,certificate,CMSSignedDataGenerator.DIGEST_SHA1);
ArrayList<X509Certificate> certList = new ArrayList<X509Certificate>();
certList.add(certificate);
CertStore certStore = CertStore.getInstance(\"Collection\",new CollectionCertStoreParameters(certList));
signedGenerator.addCertificatesAndCRLs(certStore);
CMSProcessableByteArray cmsByteArray = new CMSProcessableByteArray(data);
ByteArrayOutputStream baos = new ByteArrayOutputStream();
cmsByteArray.write(baos);
System.out.println(\"CMSProcessableByteArray contains [\"
+ baos.toString() + \"]\");
CMSSignedData signedData = signedGenerator.generate(cmsByteArray,true,\"BC\");
byte[] signed = signedData.getEncoded();
CMSEnvelopedDataGenerator envGenerator = new CMSEnvelopedDataGenerator();
envGenerator.addKeyTransRecipient(payPalCert);
CMSEnvelopedData envData = envGenerator.generate(
new CMSProcessableByteArray(signed),CMSEnvelopedDataGenerator.DES_EDE3_CBC,\"BC\");
byte[] pkcs7Bytes = envData.getEncoded();
return new String(DERtoPEM(pkcs7Bytes,\"PKCS7\"));
}
public static byte[] DERtoPEM(byte[] bytes,String headfoot) {
ByteArrayOutputStream pemStream = new ByteArrayOutputStream();
PrintWriter writer = new PrintWriter(pemStream);
byte[] stringBytes = Base64.encode(bytes);
System.out.println(\"Converting \" + stringBytes.length + \" bytes\");
String encoded = new String(stringBytes);
if (headfoot != null) {
writer.print(\"-----BEGIN \" + headfoot + \"-----\\n\");
}
// write 64 chars per line till done
int i = 0;
while ((i + 1) * 64 < encoded.length()) {
writer.print(encoded.substring(i * 64,(i + 1) * 64));
writer.print(\"\\n\");
i++;
}
if (encoded.length() % 64 != 0) {
writer.print(encoded.substring(i * 64)); // write remainder
writer.print(\"\\n\");
}
if (headfoot != null) {
writer.print(\"-----END \" + headfoot + \"-----\\n\");
}
writer.flush();
return pemStream.toByteArray();
}