下面是我使用安全休息 api 的 nifi 工作。
当我运行 invokeHttp 处理器时，出现以下异常：
2017-09-19 07:58:59,744 ERROR [Timer-Driven Process Thread-3] o.a.nifi.processors.standard.InvokeHTTP
java.lang.NullPointerException: null
at org.apache.nifi.processors.standard.InvokeHTTP.setHeaderProperties(InvokeHTTP.java:859) ~[nifi-standard-processors-1.1.0.2.1.1.0-2.jar:1.1.0.2.1.1.0-2]
at org.apache.nifi.processors.standard.InvokeHTTP.configureRequest(InvokeHTTP.java:814) ~[nifi-standard-processors-1.1.0.2.1.1.0-2.jar:1.1.0.2.1.1.0-2]
at org.apache.nifi.processors.standard.InvokeHTTP.onTrigger(InvokeHTTP.java:613) ~[nifi-standard-processors-1.1.0.2.1.1.0-2.jar:1.1.0.2.1.1.0-2]
at org.apache.nifi.processor.AbstractProcessor.onTrigger(AbstractProcessor.java:27) [nifi-api-1.1.0.2.1.1.0-2.jar:1.1.0.2.1.1.0-2]
at org.apache.nifi.controller.StandardProcessorNode.onTrigger(StandardProcessorNode.java:1099) [nifi-framework-core-1.1.0.2.1.1.0-2.jar:1.1.0.2.1.1.0-2]
at org.apache.nifi.controller.tasks.ContinuallyRunProcessorTask.call(ContinuallyRunProcessorTask.java:136) [nifi-framework-core-1.1.0.2.1.1.0-2.jar:1.1.0.2.1.1.0-2]
at org.apache.nifi.controller.tasks.ContinuallyRunProcessorTask.call(ContinuallyRunProcessorTask.java:47) [nifi-framework-core-1.1.0.2.1.1.0-2.jar:1.1.0.2.1.1.0-2]
at org.apache.nifi.controller.scheduling.TimerDrivenSchedulingAgent$1.run(TimerDrivenSchedulingAgent.java:132) [nifi-framework-core-1.1.0.2.1.1.0-2.jar:1.1.0.2.1.1.0-2]
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) [na:1.8.0_77]
at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308) [na:1.8.0_77]
at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180) [na:1.8.0_77]
at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294) [na:1.8.0_77]
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) [na:1.8.0_77]
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) [na:1.8.0_77]
at java.lang.Thread.run(Thread.java:745) [na:1.8.0_77]
错误看起来像缺少标题。以下是处理器属性：
我可以从 java 客户端访问其余的 api。这是我的代码：
WebResource webResource = client.resource(siteUrl);
ClientResponse response1 = webResource.accept("application/json")
.header("Authorization ","Token " + key)
.get(ClientResponse.class);