不支持的major.minor版本52.0强制门户 [英] Unsupported major.minor version 52.0 captive portal
问题描述
我必须和一些朋友建立一个学校项目的强制门户.我们中的一个使它工作了，我们基本上将图像从他的Raspberry PI复制到了我们的Raspberry PI.完成此操作后，一切似乎都很好，但是突然之间，当我们打开Captive Portal并尝试使用我们保存在数据库中的用户名和密码登录时，出现:
Hi guys, I have to make a captive portal for a school project with some friends. One of us got it working and we basically copied the image from his Raspberry PI to our Raspberry PI. After we did that, everything seems to be fine but then suddenly when we open our Captive Portal and try to log in with the username and password which we have saved in the database, this appears:
HTTP状态500-captiveportal/proccess:不受支持的major.minor版本52.0(无法加载类captiveportal.proccess)
HTTP Status 500 - captiveportal/proccess : Unsupported major.minor version 52.0 (unable to load class captiveportal.proccess)
类型异常报告
消息captiveportal/proccess:不支持的major.minor 52.0版本(无法加载class captiveportal.proccess)
message captiveportal/proccess : Unsupported major.minor version 52.0 (unable to load class captiveportal.proccess)
说明服务器遇到内部错误(captiveportal/proccess:不支持的major.minor 52.0版(无法加载class captiveportal.proccess))，导致服务器无法满足此请求.
description The server encountered an internal error (captiveportal/proccess : Unsupported major.minor version 52.0 (unable to load class captiveportal.proccess)) that prevented it from fulfilling this request.
例外
java.lang.UnsupportedClassVersionError:captiveportal/proccess:不支持的major.minor版本52.0(无法加载类captiveportal.proccess) org.apache.catalina.loader.WebappClassLoader.findClassInternal(WebappClassLoader.java:2905) org.apache.catalina.loader.WebappClassLoader.findClass(WebappClassLoader.java:1170) org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1678) org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1556) org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:461) org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:98) org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:927) org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:407) org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1002) org.apache.coyote.AbstractProtocol $ AbstractConnectionHandler.process(AbstractProtocol.java:579) org.apache.tomcat.util.net.JIoEndpoint $ SocketProcessor.run(JIoEndpoint.java:312) java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145) java.util.concurrent.ThreadPoolExecutor $ Worker.run(ThreadPoolExecutor.java:615) java.lang.Thread.run(Thread.java:745) note注意在Apache Tomcat/7.0.28日志中可以找到根本原因的完整堆栈跟踪.
java.lang.UnsupportedClassVersionError: captiveportal/proccess : Unsupported major.minor version 52.0 (unable to load class captiveportal.proccess) org.apache.catalina.loader.WebappClassLoader.findClassInternal(WebappClassLoader.java:2905) org.apache.catalina.loader.WebappClassLoader.findClass(WebappClassLoader.java:1170) org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1678) org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1556) org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:461) org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:98) org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:927) org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:407) org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1002) org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:579) org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:312) java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145) java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615) java.lang.Thread.run(Thread.java:745) note The full stack trace of the root cause is available in the Apache Tomcat/7.0.28 logs.
我们基本上需要填写用户名和密码，然后我们应该可以使用Internet，但是不幸的是，出现此错误. 之前有人遇到过相同的错误吗?我不确定该怎么做，我一直连续搜索了2天，但不幸的是我找不到答案. 我希望你们能帮助我解决这个问题，在此先感谢您. Empaier.
We basically need to fill in the username and the password and after that we should be able to use the internet but unfortunately this error appears. Did somebody have got the same error before? I am not sure what to do, I kept searching for straight 2 days but unfortunately I couldn't find the answer. I hope you guys can help me with this problem, thanks in advance. Empaier.
推荐答案
这意味着，您的代码是使用与运行它的Java版本不同的Java版本进行编译的. 确保您使用Java编译并使用相同的版本.
What it means is that , your code is compiled with different version of java to java version which is running it . make sure you compile and runt it with the same version if java.
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