当Rest请求URI过长时，通过apache Camel执行的java GET HTTP操作失败

Question

我在我的项目中使用ApacheRESTCXF和camel。在很多情况下，rest的请求URI的长度太长，并且在一定长度之后，HTTP操作总是失败，异常如下所示 与

statusCode: 400 
        at org.apache.camel.component.http.HttpProducer.populateHttpOperationFailedException(HttpProducer.java:230) ~[camel-http-2.13.1.jar:2.13.1] 
        at org.apache.camel.component.http.HttpProducer.process(HttpProducer.java:156) ~[camel-http-2.13.1.jar:2.13.1] 
        at org.apache.camel.util.AsyncProcessorConverterHelper$ProcessorToAsyncProcessorBridge.process(AsyncProcessorConverterHelper.java:61) ~[camel-core-2.13.1.jar:2.13.1] 
        at org.apache.camel.processor.SendProcessor.process(SendProcessor.java:113) ~[camel-core-2.13.1.jar:2.13.1] 
        at org.apache.camel.management.InstrumentationProcessor.process(InstrumentationProcessor.java:72) ~[camel-core-2.13.1.jar:2.13.1] 
        at org.apache.camel.processor.RedeliveryErrorHandler.process(RedeliveryErrorHandler.java:398) ~[camel-core-2.13.1.jar:2.13.1] 
        at org.apache.camel.processor.CamelInternalProcessor.process(CamelInternalProcessor.java:191) ~[camel-core-2.13.1.jar:2.13.1] 
        at org.apache.camel.processor.Pipeline.process(Pipeline.java:118) ~[camel-core-2.13.1.jar:2.13.1] 
        at org.apache.camel.processor.Pipeline.process(Pipeline.java:80) ~[camel-core-2.13.1.jar:2.13.1] 
        at org.apache.camel.processor.ChoiceProcessor.process(ChoiceProcessor.java:111) ~[camel-core-2.13.1.jar:2.13.1] 
        at org.apache.camel.management.InstrumentationProcessor.process(InstrumentationProcessor.java:72) ~[camel-core-2.13.1.jar:2.13.1] 
        at org.apache.camel.processor.RedeliveryErrorHandler.process(RedeliveryErrorHandler.java:398) ~[camel-core-2.13.1.jar:2.13.1] 
        at org.apache.camel.processor.CamelInternalProcessor.process(CamelInternalProcessor.java:191) ~[camel-core-2.13.1.jar:2.13.1]l 
        at org.apache.camel.processor.ChoiceProcessor.process(ChoiceProcessor.java:111) ~[camel-core-2.13.1.jar:2.13.1] 
        at org.apache.camel.management.InstrumentationProcessor.process(InstrumentationProcessor.java:72) ~[camel-core-2.13.1.jar:2.13.1] 
        at org.apache.camel.processor.RedeliveryErrorHandler.process(RedeliveryErrorHandler.java:398) ~[camel-core-2.13.1.jar:2.13.1] 
        at org.apache.camel.processor.CamelInternalProcessor.process(CamelInternalProcessor.java:191) ~[camel-core-2.13.1.jar:2.13.1] 
        at org.apache.camel.processor.Pipeline.process(Pipeline.java:118) ~[camel-core-2.13.1.jar:2.13.1] 
        at org.apache.camel.processor.Pipeline.process(Pipeline.java:80) ~[camel-core-2.13.1.jar:2.13.1] 
        at org.apache.camel.processor.CamelInternalProcessor.process(CamelInternalProcessor.java:191) ~[camel-core-2.13.1.jar:2.13.1] 
        at org.apache.camel.component.seda.SedaConsumer.sendToConsumers(SedaConsumer.java:291) [camel-core-2.13.1.jar:2.13.1] 
        at org.apache.camel.component.seda.SedaConsumer.doRun(SedaConsumer.java:200) [camel-core-2.13.1.jar:2.13.1] 
        at org.apache.camel.component.seda.SedaConsumer.run(SedaConsumer.java:147) [camel-core-2.13.1.jar:2.13.1] 
        at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) [na:1.8.0_101] 
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) [na:1.8.0_101] 
        at java.lang.Thread.run(Thread.java:745) [na:1.8.0_101] 

所以，有没有办法，我们可以在发送请求或任何其他设置请求URI最大长度的配置之前，在报头中显式传递length参数。对于解决方法，我刚刚用HttpConnection替换了camel调用，它工作得很好，这意味着camel对请求的URI长度有一些限制

我把请求放在link

骆驼码：

.choice()
                .when(header(ReservationConstant.CALL_ENDECA_FOR_LAR_FACETS).isEqualTo(Boolean.TRUE))
                .setHeader(Exchange.HTTP_METHOD, constant(org.apache.camel.component.http4.HttpMethods.GET))
                .setHeader(Exchange.HTTP_PATH, constant(ReservationConstant.ENDECA_GUIDED_SEARCH_SERVICE))
                .setBody(simple(StringUtils.EMPTY))
                //.to("cxfrs:bean:endecaLocationKeyRSClient?throwExceptionOnFailure=false")
                .to("{{service.endeca.location.dimension.rest}}")
                //.process(endecaFacetProcessor)
                .bean(EndecaResponseBuilder.class, "getEndecaResponseForLARFacets")
                .end()

Answer 1

问题似乎不是因为URI太长，而是因为请求中的一个标头太大，在我删除该标头后，它开始工作