解决： counts of IllegalAnnotationExceptions and JAXB can't handle interfaces.

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于 2011-10-25 13:02:26 发布

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分类专栏： Web Service 文章标签： java runtime

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本文详细解析了使用Java进行Web Services开发时，遇到接口返回Map类型导致的JAXB处理异常问题，并提供了将Map类型转换为HashMap的具体解决办法。

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、Caused by: com.sun.xml.bind.v2.runtime.IllegalAnnotationsException: 2 counts of IllegalAnnotationExceptions
java.util.Map is an interface, and JAXB can't handle interfaces.
        this problem is related to the following location:
                at java.util.Map
                at private java.util.Map com.cecltd.service.jaxws_asm.SayHi.arg0
                at com.cecltd.service.jaxws_asm.SayHi
java.util.Map does not have a no-arg default constructor.         this problem is related to the following location:
                at java.util.Map
                at private java.util.Map com.cecltd.service.jaxws_asm.SayHi.arg0
                at com.cecltd.service.jaxws_asm.SayHi
解决方法：将服务端的services接口返回的Map类型的值，改成HashMap.
结论：在做webServices复杂类型值传递时，返回值的类型不要用接口类型。例如(List应该改为ArrayList,Map改为HashMap等)