尝试使用itext签署pdf时出错:线程"main"中的异常java.lang.NoClassDefFoundError:org/bouncycastle/cert/X509CertificateHolder

Question

我在使用Bruno Lowagie的白皮书中的代码示例2.2尝试签署PDF时出现以下错误:PDF文档的数字签名

Exception in thread "main" java.lang.NoClassDefFoundError: org/bouncycastle/cert/X509CertificateHolder
at com.itextpdf.text.pdf.security.MakeSignature.signDetached(MakeSignature.java:143)
at com.howtodoinjava.demo.poi.PDFSign.sign(PDFSign.java:77)
at com.howtodoinjava.demo.poi.PDFSign.main(PDFSign.java:51)

引起:java.lang.ClassNotFoundException:org.bouncycastle.cert.X509CertificateHolder ......

第77行包含以下代码行:MakeSignature.signDetached(appearance,digest,signature,chain,null,null,null,0,subfilter);

第51行包含这一行:

app.sign(SRC, String.format(DEST, 1), chain, pk, DigestAlgorithms.SHA256,
provider.getName(), CryptoStandard.CMS, "Test 1", "Harare");

码

import com.itextpdf.text.DocumentException;
import com.itextpdf.text.Rectangle;
import com.itextpdf.text.pdf.PdfReader;
import com.itextpdf.text.pdf.PdfSignatureAppearance;
import com.itextpdf.text.pdf.PdfStamper;
import com.itextpdf.text.pdf.security.DigestAlgorithms;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.security.GeneralSecurityException;
import java.security.KeyStore;
import java.security.PrivateKey;
import java.security.Security;
import java.security.cert.Certificate;
import org.bouncycastle.jce.provider.BouncyCastleProvider;
import com.itextpdf.text.pdf.security.BouncyCastleDigest;
import com.itextpdf.text.pdf.security.ExternalDigest;
import com.itextpdf.text.pdf.security.ExternalSignature;
import com.itextpdf.text.pdf.security.MakeSignature.CryptoStandard;
import com.itextpdf.text.pdf.security.PrivateKeySignature;
import com.itextpdf.text.pdf.security.MakeSignature;


/**
 *
 * @author hdear
 */
public class PDFSign {
public static final String KEYSTORE = "C:\\Program Files\\Java\\jdk1.8.0_05\\bin\\ks";
public static final char[] PASSWORD = "hubert".toCharArray();
public static final String SRC = "Hello World.pdf";
public static final String DEST = "Hello World_signed%s.pdf";
public static void main(String[] args)
throws GeneralSecurityException, IOException, DocumentException {
BouncyCastleProvider provider = new BouncyCastleProvider();
Security.addProvider(provider);
KeyStore ks = KeyStore.getInstance(KeyStore.getDefaultType());
ks.load(new FileInputStream(KEYSTORE), PASSWORD);
String alias = (String)ks.aliases().nextElement();
PrivateKey pk = (PrivateKey) ks.getKey(alias, PASSWORD);
Certificate[] chain = ks.getCertificateChain(alias);
PDFSign app = new PDFSign();
app.sign(SRC, String.format(DEST, 1), chain, pk, DigestAlgorithms.SHA256,
provider.getName(), CryptoStandard.CMS, "Test 1", "Harare");
app.sign(SRC, String.format(DEST, 2), chain, pk, DigestAlgorithms.SHA512,
provider.getName(), CryptoStandard.CMS, "Test 2", "Harare");
app.sign(SRC, String.format(DEST, 3), chain, pk, DigestAlgorithms.SHA256,
provider.getName(), CryptoStandard.CADES, "Test 3", "Harare");
app.sign(SRC, String.format(DEST, 4), chain, pk, DigestAlgorithms.RIPEMD160,
provider.getName(), CryptoStandard.CADES, "Test 4", "Harare");
}
public void sign(String src, String dest,
Certificate[] chain, PrivateKey pk, String digestAlgorithm, String provider,
CryptoStandard subfilter, String reason, String location)
throws GeneralSecurityException, IOException, DocumentException {
// Creating the reader and the stamper
PdfReader reader = new PdfReader(src);
FileOutputStream os = new FileOutputStream(dest);
PdfStamper stamper = PdfStamper.createSignature(reader, os, '\0');
// Creating the appearance
PdfSignatureAppearance appearance = stamper.getSignatureAppearance();
appearance.setReason(reason);
appearance.setLocation(location);
appearance.setVisibleSignature(new Rectangle(36, 748, 144, 780), 1, "sig");
// Creating the signature
ExternalDigest digest = new BouncyCastleDigest();
ExternalSignature signature =
new PrivateKeySignature(pk, digestAlgorithm, provider);
MakeSignature.signDetached(appearance, digest, signature, chain,null, null, null, 0, subfilter);
}
}

有人帮忙吗？

Answer 1

我有同样的例外.我只有一个bouncycastle依赖:bcprov-jdk15on,当我在jar里面看时,没有X509CertificateHolder.我添加了另一个依赖项:bcpkix-jdk15on(根据此处找到的解决方案)并且它有效:)

我的工作maven依赖项:

    <dependency>
        <groupId>com.itextpdf</groupId>
        <artifactId>itextpdf</artifactId>
        <version>5.5.8</version>
    </dependency>
    <dependency>
        <groupId>org.bouncycastle</groupId>
        <artifactId>bcprov-jdk15on</artifactId>
        <version>1.49</version>
        <type>jar</type>
        <scope>compile</scope>
        <optional>true</optional>
    </dependency>
    <dependency>
        <groupId>org.bouncycastle</groupId>
        <artifactId>bcpkix-jdk15on</artifactId>
        <version>1.49</version>
        <type>jar</type>
        <scope>compile</scope>
        <optional>true</optional>
    </dependency>