iText/BouncyCastle ClassNotFound org.bouncycastle.

问题:

I'm trying to use iText Java. When you run the example "how to sign" the following error occurs:

Caused by: java.lang.ClassNotFoundException: org.bouncycastle.tsp.TimeStampTokenInfo

According "Getting Started with iText - How to sign a PDF using iText", I have to use the BouncyCastle.

I downloaded the file: bcprov-jdk15on-147.jar from BouncyCastle download page.
And added to the project: Java Build Path/Libraries/Add External JARs...

I added the following line:

Security.addProvider(new BouncyCastleProvider());

When you run the example the same error occurs.
So I downloaded another file: bcpkix-jdk15on-147.jar entitled "PKIX/CMS/EAC/PKCS/OCSP/TSP/OPENSSL"
And added to the project: Java Build Path/Libraries/Add External JARs...
Now I have two Jars.

When you run the example the following error occurs:

Caused by: java.lang.ClassNotFoundException: org.bouncycastle.asn1.DEREncodable

I tried downloading the file "bcprov-ext-jdk15on-147.jar" but did not solve the problem.

I am using iText 5.2.1 and eclipse on Windows 7 64 bits.

回答1:

BouncyCastle libs are undergoing heavy API changes that broke the compatibility with other libs like iText.

Either

• use a previous version of BouncyCastle libs. Old versions can be found here. However, you'll have to find the right version of iText that was compatible with this particular version of BC.

• make your own build of iText (the SVN trunk has been fixed). iText can be build with Maven (there's a short readme file at the root of the SVN). Please note that it's at your own risk, there may be bugs in trunk.

• wait for the next version of iText. From my experience, iText releases come every couple of months, sometime more often, sometimes less. I'm not an iText committer though, so I can't give you any ETA.

More information can be found in this thread

回答2:

iText marks bouncycastle dependencies as optional. If you require them, you need to add the dependencies in your own pom file.

To find out which dependency to include in your project, open the itextpdf pom.xml file of the version you are using (for example 5.3.2, here) and search for the 2 bouncycastle dependencies.

    <dependency>
        <groupId>org.bouncycastle</groupId>
        <artifactId>bcprov-jdk15on</artifactId>
        <version>1.47</version>
        <optional>true</optional>
    </dependency>
    <dependency>
        <groupId>org.bouncycastle</groupId>
        <artifactId>bcmail-jdk15on</artifactId>
        <version>1.47</version>
        <optional>true</optional>
    </dependency>

Copy them into your pom file and remove the optional option.

    <dependency>
        <groupId>com.itextpdf</groupId>
        <artifactId>itextpdf</artifactId>
        <version>5.3.2</version>
    </dependency>
    <dependency>
        <groupId>org.bouncycastle</groupId>
        <artifactId>bcprov-jdk15on</artifactId>
        <version>1.47</version>
    </dependency>
    <dependency>
        <groupId>org.bouncycastle</groupId>
        <artifactId>bcmail-jdk15on</artifactId>
        <version>1.47</version>
    </dependency>

回答3:

With itextpdf version 5.5.4 org.bouncycastle dependencies are marked as <optional>true</optional>. This means you MUST include those dependencies in your own pom, or you can run into classnotfound exceptions.

<dependency>
    <groupId>com.itextpdf</groupId>
    <artifactId>itextpdf</artifactId>
    <version>5.5.4</version>
</dependency>

<!-- Bouncycastle dependencies necessary as they are optional = true
    in itextpdf ... but they're not-so-optional in reality -->
<dependency>
    <groupId>org.bouncycastle</groupId>
    <artifactId>bcprov-jdk15on</artifactId>
    <version>1.49</version>
</dependency>
<dependency>
    <groupId>org.bouncycastle</groupId>
    <artifactId>bcpkix-jdk15on</artifactId>
    <version>1.49</version>
</dependency>

回答4:

from version of bcprov-jdk15on-147, class of DEREncodable is no longer exist under the path of org.bouncycastle.asn1. You can use version before 146 (including 146) to resolve this question.

回答5:

It's strange that the jars available at bouncycastle.org don't seem to contain this class. Perhaps, you may want to use one from the locations listed in this page (link).

回答6:

i have the same problem, but a fix it when i download the libreria and update those files on /WEBINF/LIB

回答7:

Luckily, the dependency jars are being delivered along with the iText now.

Please check the repository link below and download extrajars.zip file

http://sourceforge.net/projects/itext/files/

回答8:

For jruby-ers with the same failure, I updated to jruby-complete-9.1.13.0.jar from jruby-complete-1.6.6.jar and the problem seemed to resolve...FWIW...