1 严重: Servlet.service() for servlet [taotao-manager-web] in context with path [] threw exception [Request processing failed; nested exception is java.lang.NullPointerException] with root cause 2 3 java.lang.NullPointerException 4 5 at cn.thyonline.taotao.content.service.Impl.ContentServiceImpl.getContentList(ContentServiceImpl.java:28) 6 7 at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method) 8 9 at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) 10 11 at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) 12 13 at java.base/java.lang.reflect.Method.invoke(Method.java:564) 14 15 at org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:302) 16 17 at org.springframework.aop.framework.ReflectiveMethodInvocation.invokeJoinpoint(ReflectiveMethodInvocation.java:190) 18 19 at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:157) 20 21 at org.springframework.transaction.interceptor.TransactionInterceptor$1.proceedWithInvocation(TransactionInterceptor.java:99) 22 23 at org.springframework.transaction.interceptor.TransactionAspectSupport.invokeWithinTransaction(TransactionAspectSupport.java:281) 24 25 at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:96) 26 27 at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179) 28 29 at org.springframework.transaction.interceptor.TransactionInterceptor$1.proceedWithInvocation(TransactionInterceptor.java:99) 30 31 at org.springframework.transaction.interceptor.TransactionAspectSupport.invokeWithinTransaction(TransactionAspectSupport.java:281) 32 33 at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:96) 34 35 at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179) 36 37 at org.springframework.aop.interceptor.ExposeInvocationInterceptor.invoke(ExposeInvocationInterceptor.java:92) 38 39 at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179) 40 41 at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:208) 42 43 at com.sun.proxy.$Proxy36.getContentList(Unknown Source) 44 45 at com.alibaba.dubbo.common.bytecode.Wrapper1.invokeMethod(Wrapper1.java) 46 47 at com.alibaba.dubbo.rpc.proxy.javassist.JavassistProxyFactory$1.doInvoke(JavassistProxyFactory.java:46) 48 49 at com.alibaba.dubbo.rpc.proxy.AbstractProxyInvoker.invoke(AbstractProxyInvoker.java:72) 50 51 at com.alibaba.dubbo.rpc.protocol.InvokerWrapper.invoke(InvokerWrapper.java:53) 52 53 at com.alibaba.dubbo.rpc.filter.ExceptionFilter.invoke(ExceptionFilter.java:64) 54 55 at com.alibaba.dubbo.rpc.protocol.ProtocolFilterWrapper$1.invoke(ProtocolFilterWrapper.java:91) 56 57 at com.alibaba.dubbo.monitor.support.MonitorFilter.invoke(MonitorFilter.java:75) 58 59 at com.alibaba.dubbo.rpc.protocol.ProtocolFilterWrapper$1.invoke(ProtocolFilterWrapper.java:91) 60 61 at com.alibaba.dubbo.rpc.filter.TimeoutFilter.invoke(TimeoutFilter.java:42) 62 63 at com.alibaba.dubbo.rpc.protocol.ProtocolFilterWrapper$1.invoke(ProtocolFilterWrapper.java:91) 64 65 at com.alibaba.dubbo.rpc.protocol.dubbo.filter.TraceFilter.invoke(TraceFilter.java:78) 66 67 at com.alibaba.dubbo.rpc.protocol.ProtocolFilterWrapper$1.invoke(ProtocolFilterWrapper.java:91) 68 69 at com.alibaba.dubbo.rpc.filter.ContextFilter.invoke(ContextFilter.java:60) 70 71 at com.alibaba.dubbo.rpc.protocol.ProtocolFilterWrapper$1.invoke(ProtocolFilterWrapper.java:91) 72 73 at com.alibaba.dubbo.rpc.filter.GenericFilter.invoke(GenericFilter.java:112) 74 75 at com.alibaba.dubbo.rpc.protocol.ProtocolFilterWrapper$1.invoke(ProtocolFilterWrapper.java:91) 76 77 at com.alibaba.dubbo.rpc.filter.ClassLoaderFilter.invoke(ClassLoaderFilter.java:38) 78 79 at com.alibaba.dubbo.rpc.protocol.ProtocolFilterWrapper$1.invoke(ProtocolFilterWrapper.java:91) 80 81 at com.alibaba.dubbo.rpc.filter.EchoFilter.invoke(EchoFilter.java:38) 82 83 at com.alibaba.dubbo.rpc.protocol.ProtocolFilterWrapper$1.invoke(ProtocolFilterWrapper.java:91) 84 85 at com.alibaba.dubbo.rpc.protocol.dubbo.DubboProtocol$1.reply(DubboProtocol.java:108) 86 87 at com.alibaba.dubbo.remoting.exchange.support.header.HeaderExchangeHandler.handleRequest(HeaderExchangeHandler.java:84) 88 89 at com.alibaba.dubbo.remoting.exchange.support.header.HeaderExchangeHandler.received(HeaderExchangeHandler.java:170) 90 91 at com.alibaba.dubbo.remoting.transport.DecodeHandler.received(DecodeHandler.java:52) 92 93 at com.alibaba.dubbo.remoting.transport.dispatcher.ChannelEventRunnable.run(ChannelEventRunnable.java:82) 94 95 at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1135) 96 97 at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:635) 98 99 at java.base/java.lang.Thread.run(Thread.java:844)
空指针异常，检查service层的代码没有发现有问题，最后发现是service层的接口interface层为jar包，需要install之后编译成可运行的class文件才能被其他模块的依赖，
所以编译运行interface包之后再启动则测试成功~