I've written an Appian smart service plugin for an integration that has a de

gauravg568 over 9 years ago

I've written an Appian smart service plugin for an integration that has a dependency on jersey-client-1.18.jar, and jersey-core-1.18.jar. However, Appian's installation also has atlassian-rest-module-2.6.7.jar, which has classes with same name and package as in the jersey-client* and jersey-core* jars. The class loader seems to load the atlassian-rest-module classes, which is causing the following Class Cast Exception: Cannot cast com.sun.jersey.core.impl.provider.header.LocaleProvider to com.sun.jersey.core.impl.provider.header.LocaleProvider . Is there any way to resolve this class loading conflict so I may get my plugin smart service to use the jersey* jar classes? Appreciate your help.

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0 saravanana over 9 years ago

We are facing same issue with other OpenLPR API as well.. OpenLPR API uses jersey API for making rest calls. Here is the error..

Caused by: com.sun.jersey.spi.service.ServiceConfigurationError: com.sun.jersey.spi.HeaderDelegateProvider: The class com.sun.jersey.core.impl.provider.header.LocaleProvider implementing provider interface com.sun.jersey.spi.HeaderDelegateProvider could not be instantiated: Cannot cast com.sun.jersey.core.impl.provider.header.LocaleProvider to com.sun.jersey.spi.HeaderDelegateProvider..

Even I tried to overcome by changing class loader in class where issue occured, but it does not resolve the problem
ClassLoader old = Thread.currentThread().getContextClassLoader();
Thread.currentThread().setContextClassLoader(this.getClass().getClassLoader());

Jersey stuff...

Thread.currentThread().setContextClassLoader(old);
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0 saravanana over 9 years ago

We are facing same issue with other OpenLPR API as well.. OpenLPR API uses jersey API for making rest calls. Here is the error..

Caused by: com.sun.jersey.spi.service.ServiceConfigurationError: com.sun.jersey.spi.HeaderDelegateProvider: The class com.sun.jersey.core.impl.provider.header.LocaleProvider implementing provider interface com.sun.jersey.spi.HeaderDelegateProvider could not be instantiated: Cannot cast com.sun.jersey.core.impl.provider.header.LocaleProvider to com.sun.jersey.spi.HeaderDelegateProvider..

Even I tried to overcome by changing class loader in class where issue occured, but it does not resolve the problem
ClassLoader old = Thread.currentThread().getContextClassLoader();
Thread.currentThread().setContextClassLoader(this.getClass().getClassLoader());

Jersey stuff...

Thread.currentThread().setContextClassLoader(old);
Cancel
Vote Up 0 Vote Down

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Verify Answer

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