Google App Engine上的Jersey错误 [英] Jersey error on Google App Engine

问题描述

在我的Java应用程序中，我将Jersey用于REST服务.一切 可以完美地工作，但是我得到了这个错误，它消耗了大量的CPU (13830cpu_ms)并冻结该应用几秒钟.

In my java application I'm using Jersey for REST services. Everything works perfect, but I get this error which consumes a lot of CPU (13830cpu_ms) and freezes the app for few seconds.

com.sun.jersey.core.spi.component.ProviderFactory __getComponentProvider: The provider c     
class, class com.sun.jersey.json.impl.provider.entity.JSONArrayProvider$App, could not be
instantiated. Processing will continue but the class will not be utilized
java.lang.SecurityException: Unable to get members for class  
  com.sun.jersey.json.impl.provider.entity.JSONArrayProvider$App
    at com.google.appengine.runtime.Request.process-d73c0d822f527031(Request.java)
    at java.lang.Class.getDeclaredMethods(Class.java:252)

有什么办法可以解决这个问题吗?

Any idea how I can solve this problem?

推荐答案

@Drew Sears:谢谢，但是该错误发生在Jersey代码中-不是我的，所以没有代码可显示.

@Drew Sears: thanks, but the error occurs in Jersey code - not mine so there is no code to show.

最后我发现了问题:我只使用jersey库，例如jersey-core-1.7.jar.很好，应用程序将仅使用此库运行REST服务，但是如果生成JSON，它将搜索提供JSON数组提供程序的jackson库.

Finally I found the problem: I use only the jersey libraries like jersey-core-1.7.jar. This is fine and the application will rund REST services with only this libraries, but if I generate JSON it will search for the jackson library which provides a JSON array provider.

通过简单地添加jackson * .jar库，问题就消失了.

By simple adding the jackson*.jar libs the problem is gone.

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