Servlet.service() for servlet [dispatcherServlet] in context wit...
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2021-01-20
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Servlet.service() for servlet [dispatcherServlet] in context
with path [] threw exception
2020-04-27 22:15:44.892 ERROR 13764 --- [nio-8081-exec-9] o.a.c.c.C.[.[.[/].[dispatcherServlet] : Servlet.service() for servlet [dispatcherServlet] in context with
path [] threw exception [Request processing failed; nested exception is java.lang.NullPointerException] with root cause
java.lang.NullPointerException: null
at com.atguigu.gmall.manager.service.impl.SpuServiceImpl.saveSpuInfo(SpuServiceImpl.java:51) ~[na:na] at
com.alibaba.dubbo.common.bytecode.Wrapper5.invokeMethod(Wrapper5.java) ~[na:na] at
com.alibaba.dubbo.rpc.proxy.javassist.JavassistProxyFactory$1.doInvoke(JavassistProxyFactory.java:45) ~[dubbo-2.6.0.jar:2.6.0]
at com.alibaba.dubbo.rpc.proxy.AbstractProxyInvoker.invoke(AbstractProxyInvoker.java:71) ~[dubbo-2.6.0.jar:2.6.0] at
com.alibaba.dubbo.config.invoker.DelegateProviderMetaDataInvoker.invoke(DelegateProviderMetaDataInvoker.java:48) ~[dubbo-
2.6.0.jar:2.6.0] at com.alibaba.dubbo.rpc.protocol.InvokerWrapper.invoke(InvokerWrapper.java:52) ~[dubbo-2.6.0.jar:2.6.0] at
com.reger.dubbo.rpc.filter.ProceedingJoinPoint.proceed(ProceedingJoinPoint.java:40) ~[spring-boot-starter-dubbo-
1.0.10.jar:1.0.10] at com.reger.dubbo.rpc.filter.ProviderFilterBean.invoke(ProviderFilterBean.java:34) ~[spring-boot-starter-dubbo-
1.0.10.jar:1.0.10] at com.alibaba.dubbo.rpc.protocol.ProtocolFilterWrapper$1.invoke(ProtocolFilterWrapper.java:68) ~[dubbo-
2.6.0.jar:2.6.0] at com.alibaba.dubbo.rpc.filter.ExceptionFilter.invoke(ExceptionFilter.java:61) ~[dubbo-2.6.0.jar:2.6.0] at
com.alibaba.dubbo.rpc.protocol.ProtocolFilterWrapper$1.invoke(ProtocolFilterWrapper.java:68) ~[dubbo-2.6.0.jar:2.6.0] at
com.alibaba.dubbo.monitor.support.MonitorFilter.invoke(MonitorFilter.java:74) ~[dubbo-2.6.0.jar:2.6.0] at
com.alibaba.dubbo.rpc.protocol.ProtocolFilterWrapper$1.invoke(ProtocolFilterWrapper.java:68) ~[dubbo-2.6.0.jar:2.6.0] at
com.alibaba.dubbo.rpc.filter.TimeoutFilter.invoke(TimeoutFilter.java:41) ~[dubbo-2.6.0.jar:2.6.0] at
com.alibaba.dubbo.rpc.protocol.ProtocolFilterWrapper$1.invoke(ProtocolFilterWrapper.java:68) ~[dubbo-2.6.0.jar:2.6.0] at
com.alibaba.dubbo.rpc.protocol.dubbo.filter.TraceFilter.invoke(TraceFilter.java:77) ~[dubbo-2.6.0.jar:2.6.0] at
com.alibaba.dubbo.rpc.protocol.ProtocolFilterWrapper$1.invoke(ProtocolFilterWrapper.java:68) ~[dubbo-2.6.0.jar:2.6.0] at
com.alibaba.dubbo.rpc.filter.ContextFilter.invoke(ContextFilter.java:71) ~[dubbo-2.6.0.jar:2.6.0] at
com.alibaba.dubbo.rpc.protocol.ProtocolFilterWrapper$1.invoke(ProtocolFilterWrapper.java:68) ~[dubbo-2.6.0.jar:2.6.0] at
com.alibaba.dubbo.rpc.filter.GenericFilter.invoke(GenericFilter.java:131) ~[dubbo-2.6.0.jar:2.6.0] at
com.alibaba.dubbo.rpc.protocol.ProtocolFilterWrapper$1.invoke(ProtocolFilterWrapper.java:68) ~[dubbo-2.6.0.jar:2.6.0] at
com.alibaba.dubbo.rpc.filter.ClassLoaderFilter.invoke(ClassLoaderFilter.java:37) ~[dubbo-2.6.0.jar:2.6.0] at
com.alibaba.dubbo.rpc.protocol.ProtocolFilterWrapper$1.invoke(ProtocolFilterWrapper.java:68) ~[dubbo-2.6.0.jar:2.6.0] at
com.alibaba.dubbo.rpc.filter.EchoFilter.invoke(EchoFilter.java:37) ~[dubbo-2.6.0.jar:2.6.0] at
com.alibaba.dubbo.rpc.protocol.ProtocolFilterWrapper$1.invoke(ProtocolFilterWrapper.java:68) ~[dubbo-2.6.0.jar:2.6.0] at
com.alibaba.dubbo.rpc.protocol.dubbo.DubboProtocol$1.reply(DubboProtocol.java:98) ~[dubbo-2.6.0.jar:2.6.0] at
com.alibaba.dubbo.remoting.exchange.support.header.HeaderExchangeHandler.handleRequest(HeaderExchangeHandler.java:96)
~[dubbo-2.6.0.jar:2.6.0] at
com.alibaba.dubbo.remoting.exchange.support.header.HeaderExchangeHandler.received(HeaderExchangeHandler.java:168) ~
[dubbo-2.6.0.jar:2.6.0] at com.alibaba.dubbo.remoting.transport.DecodeHandler.received(DecodeHandler.java:50) ~[dubbo-
2.6.0.jar:2.6.0] at com.alibaba.dubbo.remoting.transport.dispatcher.ChannelEventRunnable.run(ChannelEventRunnable.java:79) ~
[dubbo-2.6.0.jar:2.6.0] at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) ~[na:1.8.0_144] at
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) ~[na:1.8.0_144] at
java.lang.Thread.run(Thread.java:748) [na:1.8.0_144]
借鉴的解决方案如下：
原文链接https://blog.csdn.net/weixin_44259720/article/details/103185972
问题分析和解决办法：问题分析和解决办法：
1. 编译出错编译出错
解决办法：重新编译一下项目 IDEA导航栏 –> Build –> ReBuild Project
2. Controllor层引入的层引入的Service接口上面忘记写接口上面忘记写 @Resource 或或 @Autowired 注解注解
解决办法：仔细检查程序，在引入的Service层实现类上添加注解@Autowired或@Resource注解
3. Controllor层调用的方法是层调用的方法是private私有的，导致分发失败私有的，导致分发失败
解决办法：老框架怎么做的不清楚，MVC框架，SpringBoot框架，SpringBootCloud框架都要求是public
但很可惜，没解决
我的问题：我的问题：
weixin_38517997
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