java - jfinal redis插件报错

各位大神有知道是为啥的么

Caused by: java.lang.NoClassDefFoundError: org/nustaq/serialization/FSTObjectOutput

at com.jfinal.plugin.redis.serializer.FstSerializer.valueToBytes(FstSerializer.java:45)
at com.jfinal.plugin.redis.Cache.valueToBytes(Cache.java:1157)
at com.jfinal.plugin.redis.Cache.setex(Cache.java:74)
at controller.accountController.login(accountController.java:45)
... 35 more

Caused by: java.lang.ClassNotFoundException: org.nustaq.serialization.FSTObjectOutput

at org.codehaus.plexus.classworlds.strategy.SelfFirstStrategy.loadClass(SelfFirstStrategy.java:50)
at org.codehaus.plexus.classworlds.realm.ClassRealm.loadClass(ClassRealm.java:244)
at org.codehaus.plexus.classworlds.realm.ClassRealm.loadClass(ClassRealm.java:230)
at org.eclipse.jetty.webapp.WebAppClassLoader.loadClass(WebAppClassLoader.java:449)
at org.eclipse.jetty.webapp.WebAppClassLoader.loadClass(WebAppClassLoader.java:402)
... 39 more