如何解决在Spring Cloud Dataflow中启动任务时发生NullPointerException-在Kubernetes环境中
我正在Kubernetes Cluster环境中设置Spring Cloud Dataflow。 我仅在Kubernetes部署中遇到过此问题。仅供参考，我使用的服务器2.7.0（https://dataflow.spring.io/docs/2.7.0.SNAPSHOT/recipes/batch/batch-only-mode/）没有Skipper。当我们在本地和本地docker内部部署它时，它的运行效果非常好。 但是，当我们将其部署到Kubernetes时，我们可以从私有ACR中提取示例数据或Docker映像，但是当我们尝试启动它（甚至是示例数据）时，就会出现此错误：
java.lang.NullPointerException: null
at org.springframework.cloud.dataflow.server.service.impl.DefaultTaskExecutionService.executeTask(DefaultTaskExecutionService.java:247)
at org.springframework.cloud.dataflow.server.service.impl.DefaultTaskExecutionService$$FastClassBySpringcglib$$422cda43.invoke(<generated>)
at org.springframework.cglib.proxy.MethodProxy.invoke(MethodProxy.java:218)
at org.springframework.aop.framework.cglibAopProxy$cglibMethodInvocation.invokeJoinpoint(cglibAopProxy.java:771)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:163)
at org.springframework.aop.framework.cglibAopProxy$cglibMethodInvocation.proceed(cglibAopProxy.java:749)
at org.springframework.transaction.interceptor.TransactionAspectSupport.invokeWithinTransaction(TransactionAspectSupport.java:366)
at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:118)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:186)
at org.springframework.aop.framework.cglibAopProxy$cglibMethodInvocation.proceed(cglibAopProxy.java:749)
at org.springframework.aop.framework.cglibAopProxy$DynamicAdvisedInterceptor.intercept(cglibAopProxy.java:691)
at org.springframework.cloud.dataflow.server.service.impl.DefaultTaskExecutionService$$EnhancerBySpringcglib$$af76387c.executeTask(<generated>)
at org.springframework.cloud.dataflow.server.controller.TaskExecutionController.launch(TaskExecutionController.java:170)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at org.springframework.web.method.support.invocableHandlerMethod.doInvoke(invocableHandlerMethod.java:190)
at org.springframework.web.method.support.invocableHandlerMethod.invokeForRequest(invocableHandlerMethod.java:138)
at org.springframework.web.servlet.mvc.method.annotation.ServletinvocableHandlerMethod.invokeAndHandle(ServletinvocableHandlerMethod.java:105)
at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandlerMethod(RequestMappingHandlerAdapter.java:879)
at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:793)
at org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:87)
at org.springframework.web.servlet.dispatcherServlet.dodispatch(dispatcherServlet.java:1040)
at org.springframework.web.servlet.dispatcherServlet.doService(dispatcherServlet.java:943)
at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:1006)
at org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:909)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:660)
at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:883)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:741)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:231)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:53)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:103)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
我也尝试从Pod内部使用Shell-相同的问题，nullPointerException。
NullPointerException
org.springframework.cloud.dataflow.rest.client.DataFlowClientException: NullPointerException
at org.springframework.cloud.dataflow.rest.client.VndErrorResponseErrorHandler.handleError(VndErrorResponseErrorHandler.java:65)
at org.springframework.web.client.ResponseErrorHandler.handleError(ResponseErrorHandler.java:63)
at org.springframework.web.client.RestTemplate.handleResponse(RestTemplate.java:782)
at org.springframework.web.client.RestTemplate.doExecute(RestTemplate.java:740)
at org.springframework.web.client.RestTemplate.execute(RestTemplate.java:674)
at org.springframework.web.client.RestTemplate.postForObject(RestTemplate.java:418)
at org.springframework.cloud.dataflow.rest.client.TaskTemplate.launch(TaskTemplate.java:168)
at org.springframework.cloud.dataflow.shell.command.TaskCommands.launch(TaskCommands.java:245)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at org.springframework.util.ReflectionUtils.invokeMethod(ReflectionUtils.java:282)
at org.springframework.shell.core.SimpleExecutionStrategy.invoke(SimpleExecutionStrategy.java:68)
at org.springframework.shell.core.SimpleExecutionStrategy.execute(SimpleExecutionStrategy.java:59)
at org.springframework.shell.core.AbstractShell.executeCommand(AbstractShell.java:134)
at org.springframework.shell.core.jlineShell.promptLoop(jlineShell.java:533)
at org.springframework.shell.core.jlineShell.run(jlineShell.java:179)
at java.lang.Thread.run(Thread.java:748)
您知道如何减轻这种情况吗？ 谢谢。
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