Spring SAML on Weblogic 12c

我目前正在开发一个应用程序，该应用程序使用Spring SAML (http://projects.spring.io/spring-security-saml/)项目作为我们身份验证的一部分。我知道它还在RC中，但我们正在开发的应用程序也是如此。在部署到Tomcat7时，我们已经集成了这个库，并且功能齐全，但在部署到Weblogic 12c(12.0.1.2)时却遇到了问题。在Weblogic上，如果不抛出任何错误，断言值将被解密为空，没有错误。

问题似乎出在Xerces库中。据我所知，Spring SAML(由于OpenSAML)需要2.10.0，但Weblogic提供了Xerces库的2.8.0。我尝试通过在项目的WEB-INF/lib文件夹中包含适当的xercesImpl和xml-api jar来更新Xerces库版本。这修复了Spring SAML的解密问题，但破坏了weblogic解析JSP页面的能力。我在下面包含了未升级和升级的Xerces异常的部分堆栈跟踪。如果有人有任何想法，如何正确地解决这个问题，使Spring SAML可以在Weblogic中工作，同时不破坏默认功能，我将非常感激。

这是更新Xerces

之前的堆栈跟踪

2014-07-31 10:43:37,675 [[ACTIVE] ExecuteThread: '2' for queue:     'weblogic.kernel.Default (self-tuning)'] DEBUG org.apache.xml.security.algorithms.JCEMapper   - Request for U
RI http://www.w3.org/2001/04/xmlenc#aes256-cbc
2014-07-31 10:43:37,675 [[ACTIVE] ExecuteThread: '2' for queue:    'weblogic.kernel.Default (self-tuning)'] DEBUG org.apache.xml.security.encryption.XMLCipher    - JCE Algorithm
 = AES/CBC/ISO10126Padding
<Jul 31, 2014 10:43:37 AM EDT> <Error> <HTTP> <BEA-101020>     <[ServletContext@1538876008[app:intranet module:intranet.war path:null spec-version:3.0]]    Servlet failed with an
Exception
java.lang.NumberFormatException: For input string: ""
    at java.lang.NumberFormatException.forInputString(NumberFormatException.java:65)
    at java.lang.Integer.parseInt(Integer.java:504)
    at java.lang.Integer.valueOf(Integer.java:582)
    at org.opensaml.common.SAMLVersion.valueOf(SAMLVersion.java:89)
    at org.opensaml.saml2.core.impl.AssertionUnmarshaller.processAttribute(AssertionUnmarshaller.java:71)
    at org.opensaml.xml.io.AbstractXMLObjectUnmarshaller.unmarshallAttribute(AbstractXMLObjectUnmarshaller.java:254)
    at org.opensaml.xml.io.AbstractXMLObjectUnmarshaller.unmarshall(AbstractXMLObjectUnmarshaller.java:113)
    at org.opensaml.xml.encryption.Decrypter.decryptDataToList(Decrypter.java:479)
    at org.opensaml.xml.encryption.Decrypter.decryptData(Decrypter.java:403)
    at org.opensaml.saml2.encryption.Decrypter.decryptData(Decrypter.java:141)
    at org.opensaml.saml2.encryption.Decrypter.decrypt(Decrypter.java:69)
    at org.springframework.security.saml.websso.WebSSOProfileConsumerImpl.processAuthenticationResponse(WebSSOProfileConsumerImpl.java:190)
    at org.springframework.security.saml.SAMLAuthenticationProvider.authenticate(SAMLAuthenticationProvider.java:82)
    at org.springframework.security.authentication.ProviderManager.authenticate(ProviderManager.java:156)
    at org.springframework.security.saml.SAMLProcessingFilter.attemptAuthentication(SAMLProcessingFilter.java:84)

这是Xerces更新到2.10.0后的堆栈跟踪。

weblogic.servlet.jsp.CompilationException: Failed to compile JSP /WEB-  INF/jsp/errors/500.jsp
500.jsp:1:1: The validator class: "org.apache.taglibs.standard.tlv.JstlCoreTLV" has       failed with the following exception: "java.lang.ClassCastException: weblogic.xml.jaxp.Re
gistrySAXParserFactory cannot be cast to javax.xml.parsers.SAXParserFactory".
<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core"%>
^-------------------------------------------------------------^
500.jsp:2:5: No tag library could be found with this URI. Possible causes could be that     the URI is incorrect, or that there were errors during parsing of the .tld file.
<%@ taglib prefix="int" uri="intranet"%>
^----^
 500.jsp:2:5: No tag library could be found with this URI. Possible causes could be   that the URI is incorrect, or that there were errors during parsing of the .tld file.
<%@ taglib prefix="int" uri="intranet"%>
^----^
500.jsp:6:3: This tag can only appear as a subelement of a standard or custom action.    Exceptions are: jsp:body, jsp:attribute, jsp:expression, jsp:scriptlet, and jsp:declaration.
    <jsp:attribute name="minifiedJs">
     ^-----------^
 500.jsp:8:3: This tag can only appear as a subelement of a standard or custom action.   Exceptions are: jsp:body, jsp:attribute, jsp:expression, jsp:scriptlet, and jsp:declaration.
    <jsp:attribute name="nonMinifiedJs">
     ^-----------^
  500.jsp:11:3: This tag can only appear as a subelement of a standard or custom action. Exceptions are: jsp:body, jsp:attribute, jsp:expression, jsp:scriptlet, and jsp:declaration.
    <jsp:body>
     ^------^
    at weblogic.servlet.jsp.JavelinxJSPStub.reportCompilationErrorIfNeccessary(JavelinxJSPStub.java:243)
    at weblogic.servlet.jsp.JavelinxJSPStub.compilePage0(JavelinxJSPStub.java:179)
    at weblogic.servlet.jsp.JavelinxJSPStub.access$000(JavelinxJSPStub.java:50)
    at weblogic.servlet.jsp.JavelinxJSPStub$1.run(JavelinxJSPStub.java:108)
    at java.security.AccessController.doPrivileged(Native Method)
    at weblogic.servlet.jsp.JavelinxJSPStub.compilePage(JavelinxJSPStub.java:105)
    at weblogic.servlet.jsp.JspStub.prepareServlet(JspStub.java:247)
    at weblogic.servlet.jsp.JspStub.prepareServlet(JspStub.java:200)
    at weblogic.servlet.internal.ServletStubImpl.getServlet(ServletStubImpl.java:403)
    at weblogic.servlet.internal.ServletStubImpl.execute(ServletStubImpl.java:295)
    at weblogic.servlet.internal.ServletStubImpl.onAddToMapException(ServletStubImpl.java:478)
    at weblogic.servlet.internal.ServletStubImpl.execute(ServletStubImpl.java:367)
    at weblogic.servlet.internal.TailFilter.doFilter(TailFilter.java:25)
    at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:79)
    ...

给以后遇到的人。我最终通过更新到xercesImpl版本2.9.0解决了这个问题。这似乎是这个问题的甜蜜点版本，尽管它比OpenSAML请求的要少，但它修复了这个问题，同时不会引起Weblogic的任何其他问题(就我目前遇到的情况而言)。Xerces 2.10.0需要更新版本的xml-api才能运行，这导致了Weblogic的问题(2.9.0似乎可以使用Weblogic中包含的xml-api版本)。

以下方法允许在Weblogic中绑定自定义Xerces和Xalan库:

创建耳朵档案spring-security-saml2-sample.ear
在ear中包含Spring SAML文件spring-security-saml2-sample.war, war应该包含自己的Xerces和Xalan版本。

在耳内创建文件META-INF/application.xml，内容如下:

<application xmlns="http://java.sun.com/xml/ns/javaee"
          xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
          xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/application_5.xsd" version="5">
  <module>
    <web>
      <web-uri>spring-security-saml2-sample.war</web-uri>
      <context-root>spring-security-saml2-sample</context-root>
    </web>
  </module>
</application>

创建META-INF/weblogic-application.xml文件，内容如下:

<weblogic-application xmlns="http://www.bea.com/ns/weblogic/90"
                      xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
                      xsi:schemaLocation="http://www.bea.com/ns/weblogic/90 http://www.oracle.com/technology/weblogic/920/weblogic-application.xsd">
    <xml>
        <parser-factory>
            <saxparser-factory>
                org.apache.xerces.jaxp.SAXParserFactoryImpl
            </saxparser-factory>
            <document-builder-factory>
                org.apache.xerces.jaxp.DocumentBuilderFactoryImpl
            </document-builder-factory>
            <transformer-factory>
                org.apache.xalan.processor.TransformerFactoryImpl
            </transformer-factory>
        </parser-factory>
    </xml>
    <prefer-application-packages>
        <package-name>org.opensaml.*</package-name>
        <package-name>org.apache.xerces.*</package-name>
        <package-name>org.apache.xalan.*</package-name>
    </prefer-application-packages>                       
</weblogic-application>

部署存档

您是否使用prefer-web-inf-classes用于war文件或prefer-application-packages用于ear文件?其中一个可能会解决问题:

在weblogic-application.xml:

<wls:prefer-application-packages>
    <wls:package-name>org.apache.xerces.xni.parser.*</wls:package-name>
    <wls:package-name>org.apache.xerces.parsers.*</wls:package-name>
    <wls:package-name>org.apache.xalan.*</wls:package-name>
</wls:prefer-application-packages>

在weblogic.xml:

<wls:container-descriptor>
    <wls:prefer-web-inf-classes>true</prefer-web-inf-classes>
</wls:container-descriptor>

查看Oracle文档

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