java EJB ETL NoClassDefFoundError:org。阿帕奇。波伊。util。运行时的SAXHelper

Question

根pom具有以下依赖项：

        <dependency>
            <groupId>org.apache.poi</groupId>
            <artifactId>poi</artifactId>
            <version>3.16</version>
        </dependency>
        <dependency>
            <groupId>org.apache.poi</groupId>
            <artifactId>poi-ooxml</artifactId>
            <version>3.16</version>
        </dependency>
        <dependency>
            <groupId>org.apache.poi</groupId>
            <artifactId>poi-ooxml-schemas</artifactId>
            <version>3.16</version>
        </dependency>

但是在运行时，在etl过程中发生以下错误

EJB threw an unexpected (non-declared) exception during invocation of method "****" on bean "BeanId(***-ear#***-ejb.jar#***ServiceImpl, null)". Exception data: java.lang.NoClassDefFoundError: org.apache.poi.util.SAXHelper

根本原因是NoClassDefFoundError在下面的代码片段中

XMLReader parser = SAXHelper.newXMLReader();

使用的环境

JDK 1.6.0_35
Websphere Application Server v8.0
Eclipse Juno Service Release 2 

可以在这里找到完整的堆栈跟踪

Caused by: java.lang.ClassNotFoundException: org.apache.poi.util.SAXHelper
    at java.net.URLClassLoader.findClass(URLClassLoader.java:434)
    at com.ibm.ws.bootstrap.ExtClassLoader.findClass(ExtClassLoader.java:230)
    at java.lang.ClassLoader.loadClassHelper(ClassLoader.java:703)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:682)
    at com.ibm.ws.bootstrap.ExtClassLoader.loadClass(ExtClassLoader.java:123)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:665)
    at com.ibm.ws.classloader.ProtectionClassLoader.loadClass(ProtectionClassLoader.java:62)
    at com.ibm.ws.classloader.ProtectionClassLoader.loadClass(ProtectionClassLoader.java:58)
    at com.ibm.ws.classloader.CompoundClassLoader.loadClass(CompoundClassLoader.java:566)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:665)
    ... 87 more

注意：我已经打开了ear档案，发现相应的jars可用。也选中了Eclipse{}。一切似乎都很好

谢谢

Answer 1

SAXHelper在poi-ooxml-3.16中。罐子我怀疑这个类中的一个静态初始值设定项失败了。 https://github.com/apache/poi/blob/trunk/src/ooxml/java/org/apache/poi/util/SAXHelper.java