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我们使用的是 WSO2 应用服务器版本 5.0.1。如果我在 JSP 页面中使用 javax.crypto 包，访问时无法编译。为了验证这一点，我将 jce.jar 文件复制到了我们的 Web 应用程序的 WEB-INF/lib 文件夹中。如果 jce.jar 文件存在于 WEB-INF/lib 文件夹中，则 jsp 可以正常编译，但如果我从那里删除 jce.jar，则编译失败并出现以下错误：

Generated servlet error:
The type javax.activation.DataHandler cannot be resolved. It is indirectly referenced from required .class files

An error occurred at line: 10 in the jsp file: /processPassword.jsp
Generated servlet error:
PBEKeySpec cannot be resolved to a type

An error occurred at line: 10 in the jsp file: /processPassword.jsp
Generated servlet error:
SecretKeyFactory cannot be resolved to a type

An error occurred at line: 10 in the jsp file: /processPassword.jsp
Generated servlet error:
SecretKeyFactory cannot be resolved

] with root cause
org.apache.jasper.JasperException: Unable to compile class for JSP

Generated servlet error:
The type javax.activation.DataHandler cannot be resolved. It is indirectly referenced from required .class files

An error occurred at line: 10 in the jsp file: /processPassword.jsp
Generated servlet error:
PBEKeySpec cannot be resolved to a type

An error occurred at line: 10 in the jsp file: /processPassword.jsp
Generated servlet error:
SecretKeyFactory cannot be resolved to a type

An error occurred at line: 10 in the jsp file: /processPassword.jsp
Generated servlet error:
SecretKeyFactory cannot be resolved


    at org.apache.jasper.compiler.DefaultErrorHandler.javacError(DefaultErrorHandler.java:84)
    at org.apache.jasper.compiler.ErrorDispatcher.javacError(ErrorDispatcher.java:328)
    at org.apache.jasper.compiler.JDTCompiler.generateClass(JDTCompiler.java:414)
    at org.apache.jasper.compiler.Compiler.compile(Compiler.java:297)
    at org.apache.jasper.compiler.Compiler.compile(Compiler.java:276)
    at org.apache.jasper.compiler.Compiler.compile(Compiler.java:264)
    at org.apache.jasper.JspCompilationContext.compile(JspCompilationContext.java:563)
    at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:303)
    at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:314)
    at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:264)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:722)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:305)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
    at com.isomorphic.servlet.CompressionFilter.doFilter(CompressionFilter.java:260)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
    at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:225)
    at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:123)
    at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:581)
    at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:168)
    at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:98)
    at org.wso2.carbon.tomcat.ext.valves.CompositeValve.invoke(CompositeValve.java:172)
    at org.wso2.carbon.tomcat.ext.valves.CarbonContextCreatorValve.invoke(CarbonContextCreatorValve.java:52)
    at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118)
    at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:407)
    at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1001)
    at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:579)
    at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.run(NioEndpoint.java:1653)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1146)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
    at java.lang.Thread.run(Thread.java:701)

想知道什么可能导致这些编译错误以及如何避免它们而不必将 jce.jar 放在 WEB-INF/lib 中

如果我在 servlet 中使用 javax.crypto 包，它可以编译并运行良好。这让我相信 WSO2 应用程序服务器版本 5.0.1 上的 jsp 编译存在类路径问题。

有什么建议么？

4

2 回答 2

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由于 jce.jar 是 jre 的一部分，它应该在 jsp 编译类路径中可用。因此，它不需要额外的特定于 web 应用程序的类加载，例如通过 webapp-classloading.xml。以下是无法在 5.0.1 上编译和运行的 jsp 页面的开头：

<%@ page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<%@ page language="java" import="java.util.*" %>
<%@ page language="java" import="org.apache.axiom.om.util.Base64"%>
<%@ page language="java" import="java.security.SecureRandom"%>
<%@ page language="java" import="java.security.spec.KeySpec"%>
<%@ page language="java" import="javax.crypto.SecretKeyFactory"%>
<%@ page language="java" import="javax.crypto.spec.PBEKeySpec"%>

您能否确认这在 5.1.0 中有效，而无需设置 web-app 特定的类路径？

于 2014-01-21T07:09:05.540 回答
0

这可能是应用服务器中的类加载问题，但我们已在 5.1.0 版本上修复了它。我们引入了一个名为 webapp-classloading.xml 的新 xml 文件以避免类加载问题。

请参考http://docs.wso2.org/display/AS510/Webapp+ClassLoading

于 2014-01-21T05:59:36.163 回答