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社区首页 >问答首页 >Java JDK版本eclipse Blackboard 9.1 java.lang.UnsupportedClassVersionError

问Java JDK版本eclipse Blackboard 9.1 java.lang.UnsupportedClassVersionError
EN

Stack Overflow用户
提问于 2012-09-07 19:53:12
回答 1查看 461关注 0票数 0

我已经成功地实现并部署了hello world项目，添加了一个管理示例管理工具。我在eclipse中的3个地方(project、ant和常规eclipse java设置)将所有版本的JRE/JDK更正为1.6之后才这么做。现在我正在尝试编译一个外部承包商给我们的项目(它是以.war格式工作的)。我想自己扩展这个项目。该项目中有axis jars等，并引用黑板jars，尽管它在eclipse中编译，但在部署到Bb并运行它时，我得到了get: java.lang.UnsupportedClassVersionError我尝试在JDK1.7中编译，但我也得到了一个错误。它似乎与版本相关-我应该为BB9.1使用哪个JDK版本？有没有人能提供一点线索？完全错误: com/streaming/SearchManager

代码语言：javascript
复制
java.lang.UnsupportedClassVersionError: com/streaming/SearchManager
    at org.apache.jsp.helix.resultsList_jsp._jspService(resultsList_jsp.java:129)
    at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
    at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:386)
    at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:313)
    at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:260)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
    at sun.reflect.GeneratedMethodAccessor1109.invoke(Unknown Source)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
    at java.lang.reflect.Method.invoke(Method.java:597)
    at org.apache.catalina.security.SecurityUtil$1.run(SecurityUtil.java:270)
    at org.apache.catalina.security.SecurityUtil$1.run(SecurityUtil.java:269)
    at java.security.AccessController.doPrivileged(Native Method)
    at javax.security.auth.Subject.doAsPrivileged(Subject.java:517)
    at org.apache.catalina.security.SecurityUtil.execute(SecurityUtil.java:302)
    at org.apache.catalina.security.SecurityUtil.doAsPrivilege(SecurityUtil.java:163)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:283)
    at org.apache.catalina.core.ApplicationFilterChain.access$000(ApplicationFilterChain.java:56)
    at org.apache.catalina.core.ApplicationFilterChain$1.run(ApplicationFilterChain.java:189)
    at java.security.AccessController.doPrivileged(Native Method)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:185)
    at blackboard.platform.servlet.B2ContextFilter.doFilter(B2ContextFilter.java:121)
    at sun.reflect.GeneratedMethodAccessor1114.invoke(Unknown Source)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
    at java.lang.reflect.Method.invoke(Method.java:597)
    at org.apache.catalina.security.SecurityUtil$1.run(SecurityUtil.java:270)
    at org.apache.catalina.security.SecurityUtil$1.run(SecurityUtil.java:269)
    at java.security.AccessController.doPrivileged(Native Method)
    at javax.security.auth.Subject.doAsPrivileged(Subject.java:517)
    at org.apache.catalina.security.SecurityUtil.execute(SecurityUtil.java:302)
    at org.apache.catalina.security.SecurityUtil.doAsPrivilege(SecurityUtil.java:243)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:230)
    at org.apache.catalina.core.ApplicationFilterChain.access$000(ApplicationFilterChain.java:56)
    at org.apache.catalina.core.ApplicationFilterChain$1.run(ApplicationFilterChain.java:189)
    at java.security.AccessController.doPrivileged(Native Method)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:185)
    at blackboard.platform.servlet.ContentTypeFilter.doFilter(ContentTypeFilter.java:57)
    at sun.reflect.GeneratedMethodAccessor1112.invoke(Unknown Source)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
    at java.lang.reflect.Method.invoke(Method.java:597)
    at org.apache.catalina.security.SecurityUtil$1.run(SecurityUtil.java:270)
    at org.apache.catalina.security.SecurityUtil$1.run(SecurityUtil.java:269)
    at java.security.AccessController.doPrivileged(Native Method)
    at javax.security.auth.Subject.doAsPrivileged(Subject.java:517)
    at org.apache.catalina.security.SecurityUtil.execute(SecurityUtil.java:302)
    at org.apache.catalina.security.SecurityUtil.doAsPrivilege(SecurityUtil.java:243)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:230)
    at org.apache.catalina.core.ApplicationFilterChain.access$000(ApplicationFilterChain.java:56)
    at org.apache.catalina.core.ApplicationFilterChain$1.run(ApplicationFilterChain.java:189)
    at java.security.AccessController.doPrivileged(Native Method)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:185)
    at blackboard.platform.servlet.XssServletFilter.doFilter(XssServletFilter.java:139)
    at sun.reflect.GeneratedMethodAccessor1111.invoke(Unknown Source)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
    at java.lang.reflect.Method.invoke(Method.java:597)
    at org.apache.catalina.security.SecurityUtil$1.run(SecurityUtil.java:270)
    at org.apache.catalina.security.SecurityUtil$1.run(SecurityUtil.java:269)
    at java.security.AccessController.doPrivileged(Native Method)
    at javax.security.auth.Subject.doAsPrivileged(Subject.java:517)
    at org.apache.catalina.security.SecurityUtil.execute(SecurityUtil.java:302)
    at org.apache.catalina.security.SecurityUtil.doAsPrivilege(SecurityUtil.java:243)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:230)
    at org.apache.catalina.core.ApplicationFilterChain.access$000(ApplicationFilterChain.java:56)
    at org.apache.catalina.core.ApplicationFilterChain$1.run(ApplicationFilterChain.java:189)
    at java.security.AccessController.doPrivileged(Native Method)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:185)
    at blackboard.platform.servlet.RequestSessionFilter.doFilter(RequestSessionFilter.java:123)
    at sun.reflect.GeneratedMethodAccessor1110.invoke(Unknown Source)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
    at java.lang.reflect.Method.invoke(Method.java:597)
    at org.apache.catalina.security.SecurityUtil$1.run(SecurityUtil.java:270)
    at org.apache.catalina.security.SecurityUtil$1.run(SecurityUtil.java:269)
    at java.security.AccessController.doPrivileged(Native Method)
    at javax.security.auth.Subject.doAsPrivileged(Subject.java:517)
    at org.apache.catalina.security.SecurityUtil.execute(SecurityUtil.java:302)
    at org.apache.catalina.security.SecurityUtil.doAsPrivilege(SecurityUtil.java:243)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:230)
    at org.apache.catalina.core.ApplicationFilterChain.access$000(ApplicationFilterChain.java:56)
    at org.apache.catalina.core.ApplicationFilterChain$1.run(ApplicationFilterChain.java:189)
    at java.security.AccessController.doPrivileged(Native Method)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:185)
    at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233)
    at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
    at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
    at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
    at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:554)
    at org.apache.catalina.valves.RemoteIpValve.invoke(RemoteIpValve.java:647)
    at blackboard.tomcat.valves.LoggingRemoteIpValve.invoke(LoggingRemoteIpValve.java:44)
    at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
    at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:298)
    at org.apache.jk.server.JkCoyoteHandler.invoke(JkCoyoteHandler.java:190)
    at org.apache.jk.common.HandlerRequest.invoke(HandlerRequest.java:291)
    at org.apache.jk.common.ChannelSocket.invoke(ChannelSocket.java:776)
    at org.apache.jk.common.ChannelSocket.processConnection(ChannelSocket.java:705)
    at org.apache.jk.common.ChannelSocket$SocketConnection.runIt(ChannelSocket.java:898)
    at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:690)
    at java.lang.Thread.run(Thread.java:662)
eclipse
java
blackboard
EN

回答 1

Stack Overflow用户

发布于 2012-11-30 02:48:23

运行的JDK版本将根据本地设置的不同而有所不同。在Blackboard学习9.1 Service Pack 10 (2012年10月发布)之后，系统应该运行JDK 1.7版本。在此之前，它们可能运行在JDK1.6下，尽管有些运行在1.7下。您应该联系您的本地管理员，以确定JDK的路径并获取所使用的版本。JDK的路径存储在bb-config.properties文件中。

jsp文件中的问题可能是它引用了webapps/WEB-INF/lib (本地构建块库)中的库，该库与目标Blackboard系统上的JDK版本不兼容。您的jsp似乎是在运行时在黑板服务器上编译的，并且由于第三方库的兼容性而失败。如果要在war文件中预编译jsp，则必须将jspc用作ant任务。

票数 0
EN
页面原文内容由Stack Overflow提供。腾讯云小微IT领域专用引擎提供翻译支持
原文链接：

https://stackoverflow.com/questions/12317590

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