Java Itext Package Usage exception problem

Java Itext Package Usage exception problem

Itext java.lang.noclassdeffounderror:org/bouncycastle/asn1/asn1primitive exceptions are required to be introduced into the POM when using

<dependency>    <groupid>org.bouncycastle</groupid>    <artifactid>bcprov-jdk15on </artifactid>    <version>1.52</version></dependency>

then appears java.lang.SecurityException:class "Org.bouncycastle.asn1.ASN1Primitive" ' s signer information does not match Signer information of other classes in the same package this exception is due to the introduction of the Bcprov packet conflict was checked because the following package introduced the JDK14 version, need to excluse out

<dependency>    <groupid>pdfbox</groupid>    <artifactid>pdfbox</artifactid>    <version>0.7.3</version>    <scope>test</scope>    <exclusd <= "" Dependency = "" ></exclusd></dependency>

Java Itext Package Usage exception problem