唯一的C币了，有没有大神呀~~~
这是在Tomcat的Context.xml中加入的配置
<Manager className="de.javakaffee.web.msm.MemcachedBackupSessionManager"
memcachedNodes="n1:10.10.121.210:11211"
sticky="false"
lockingMode="auto"
sessionBackupAsync="false"
requestUriIgnorePattern=".*\.(ico|png|gif|jpg|css|js)$"
sessionBackupTimeout="1000"
transcoderFactoryClass="de.javakaffee.web.msm.serializer.kryo.KryoTranscoderFactory"/>
这是Memcached的启动命令：
./memcached -d -m 1024 -u root -l 10.10.121.210 -p 11211 -P/tmp/memcached.pid
这是JSP请求时报的错：
严重: Error processing request
java.lang.NoSuchFieldError: attributes
at de.javakaffee.web.msm.MemcachedBackupSession.getAttributesFiltered(MemcachedBackupSession.java:515)
at de.javakaffee.web.msm.BackupSessionTask.call(BackupSessionTask.java:109)
at de.javakaffee.web.msm.BackupSessionTask.call(BackupSessionTask.java:51)
at de.javakaffee.web.msm.BackupSessionService$SynchronousExecutorService.submit(BackupSessionService.java:346)
at de.javakaffee.web.msm.BackupSessionService.backupSession(BackupSessionService.java:205)
at de.javakaffee.web.msm.MemcachedSessionService.backupSession(MemcachedSessionService.java:1030)
at de.javakaffee.web.msm.RequestTrackingHostValve.backupSession(RequestTrackingHostValve.java:230)
at de.javakaffee.web.msm.RequestTrackingHostValve.invoke(RequestTrackingHostValve.java:159)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:103)
at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:956)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:116)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:442)
at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1082)
at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:623)
at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:316)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
at java.lang.Thread.run(Thread.java:744)
一般是包的错误，包冲突这个说法较多
你百度一下具体解决办法
网上有很多类似，同类的问题