OpenSAML问题-TrustMaterial的NoClassDefFoundError（Java7，Maven）

在尝试使用OpenSAML完成单一登录时，我们看到以下错误。这是可行的，但当我们升级到Java7时，它似乎停止了（尽管这很可能是一种危险的做法）。我们确实安装了JCE，所以不要认为它与此相关。以前有人遇到过这种情况吗

java.lang.NoClassDefFoundError: Could not initialize class org.apache.commons.ssl.TrustMaterial
    org.opensaml.xml.security.x509.X509Util.decodeCertificate(X509Util.java:319)
    org.opensaml.xml.security.keyinfo.KeyInfoHelper.getCertificate(KeyInfoHelper.java:194)
    org.opensaml.xml.security.keyinfo.KeyInfoHelper.getCertificates(KeyInfoHelper.java:169)
    org.opensaml.xml.security.keyinfo.provider.InlineX509DataProvider.extractCertificates(InlineX509DataProvider.java:191)
    org.opensaml.xml.security.keyinfo.provider.InlineX509DataProvider.process(InlineX509DataProvider.java:125)
    org.opensaml.xml.security.keyinfo.BasicProviderKeyInfoCredentialResolver.processKeyInfoChild(BasicProviderKeyInfoCredentialResolver.java:299)
    org.opensaml.xml.security.keyinfo.BasicProviderKeyInfoCredentialResolver.processKeyInfoChildren(BasicProviderKeyInfoCredentialResolver.java:255)
    org.opensaml.xml.security.keyinfo.BasicProviderKeyInfoCredentialResolver.processKeyInfo(BasicProviderKeyInfoCredentialResolver.java:189)
    org.opensaml.xml.security.keyinfo.BasicProviderKeyInfoCredentialResolver.resolveFromSource(BasicProviderKeyInfoCredentialResolver.java:148)
    org.opensaml.xml.security.credential.AbstractCriteriaFilteringCredentialResolver.resolve(AbstractCriteriaFilteringCredentialResolver.java:57)
    org.opensaml.xml.security.credential.AbstractCriteriaFilteringCredentialResolver.resolve(AbstractCriteriaFilteringCredentialResolver.java:37)
    org.opensaml.security.MetadataCredentialResolver.retrieveFromMetadata(MetadataCredentialResolver.java:266)

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确保

not-yet-commons-ssl-0.3.9.jar

位于JVM的类路径上。这就是包含

TrustMaterial

类的jar