一按购买或者加入购物车就报错

[lanhehe]

Messages:
File:	com/wt/action/OrderAction.java
Line number:	147

Stacktraces

java.lang.NullPointerException
com.wt.action.OrderAction.save(OrderAction.java:147)
sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
java.lang.reflect.Method.invoke(Method.java:498)
com.opensymphony.xwork2.DefaultActionInvocation.invokeAction(DefaultActionInvocation.java:450)
com.opensymphony.xwork2.DefaultActionInvocation.invokeActionOnly(DefaultActionInvocation.java:289)
com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:252)
com.wt.interceptor.UserLoginInterceptor.intercept(UserLoginInterceptor.java:24)
com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:246)
org.apache.struts2.impl.StrutsActionProxy.execute(StrutsActionProxy.java:54)
org.apache.struts2.dispatcher.Dispatcher.serviceAction(Dispatcher.java:563)
org.apache.struts2.dispatcher.ng.ExecuteOperations.executeAction(ExecuteOperations.java:77)
org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter.doFilter(StrutsPrepareAndExecuteFilter.java:99)
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:192)
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:165)
org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:198)
org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:96)
org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:474)
org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:140)
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:79)
org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:624)
org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:87)
org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:349)
org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:783)
org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:66)
org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:789)
org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1437)
org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49)
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
java.lang.Thread.run(Thread.java:745)

[hohoTT]

这个错误很明显，是一个空指针异常，你需要在数据库中先添加java以及html两本书的信息才可以，具体哪一张表的话是仓库哪一张。 2017-09-30 12:15 GMT+08:00 lanhehe <notifications@github.com>:

…

Messages: File: com/wt/action/OrderAction.java Line number: 147 Stacktraces java.lang.NullPointerException com.wt.action.OrderAction.save(OrderAction.java:147) sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java: 62) sun.reflect.DelegatingMethodAccessorImpl.invoke( DelegatingMethodAccessorImpl.java:43) java.lang.reflect.Method.invoke(Method.java:498) com.opensymphony.xwork2.DefaultActionInvocation.invokeAction( DefaultActionInvocation.java:450) com.opensymphony.xwork2.DefaultActionInvocation.invokeActionOnly( DefaultActionInvocation.java:289) com.opensymphony.xwork2.DefaultActionInvocation.invoke( DefaultActionInvocation.java:252) com.wt.interceptor.UserLoginInterceptor.intercept( UserLoginInterceptor.java:24) com.opensymphony.xwork2.DefaultActionInvocation.invoke( DefaultActionInvocation.java:246) org.apache.struts2.impl.StrutsActionProxy.execute( StrutsActionProxy.java:54) org.apache.struts2.dispatcher.Dispatcher.serviceAction( Dispatcher.java:563) org.apache.struts2.dispatcher.ng.ExecuteOperations.executeAction( ExecuteOperations.java:77) org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter. doFilter(StrutsPrepareAndExecuteFilter.java:99) org.apache.catalina.core.ApplicationFilterChain.internalDoFilter( ApplicationFilterChain.java:192) org.apache.catalina.core.ApplicationFilterChain.doFilter( ApplicationFilterChain.java:165) org.apache.catalina.core.StandardWrapperValve.invoke( StandardWrapperValve.java:198) org.apache.catalina.core.StandardContextValve.invoke( StandardContextValve.java:96) org.apache.catalina.authenticator.AuthenticatorBase.invoke( AuthenticatorBase.java:474) org.apache.catalina.core.StandardHostValve.invoke( StandardHostValve.java:140) org.apache.catalina.valves.ErrorReportValve.invoke( ErrorReportValve.java:79) org.apache.catalina.valves.AbstractAccessLogValve.invoke( AbstractAccessLogValve.java:624) org.apache.catalina.core.StandardEngineValve.invoke( StandardEngineValve.java:87) org.apache.catalina.connector.CoyoteAdapter.service( CoyoteAdapter.java:349) org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:783) org.apache.coyote.AbstractProcessorLight.process( AbstractProcessorLight.java:66) org.apache.coyote.AbstractProtocol$ConnectionHandler.process( AbstractProtocol.java:789) org.apache.tomcat.util.net.NioEndpoint$SocketProcessor. doRun(NioEndpoint.java:1437) org.apache.tomcat.util.net.SocketProcessorBase.run( SocketProcessorBase.java:49) java.util.concurrent.ThreadPoolExecutor.runWorker( ThreadPoolExecutor.java:1142) java.util.concurrent.ThreadPoolExecutor$Worker.run( ThreadPoolExecutor.java:617) org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run( TaskThread.java:61) java.lang.Thread.run(Thread.java:745) — You are receiving this because you are subscribed to this thread. Reply to this email directly, view it on GitHub <#3>, or mute the thread <https://github.com/notifications/unsubscribe-auth/ANAR8Q_nz_Cvot9eqgXfvuiRN1d3MaQ_ks5sncBQgaJpZM4Ppbu5> .