Develop Reference

Apache HTTP Java Client causing Premature end of Content-Length delimited message body

I am trying to solve a very puzzling error. I have the following code executing an HTTP Post to a remove server.
httpPost.setEntity(new StringEntity(requestAsString));
HttpResponse httpResponse = httpClient.execute(httpHost, httpPost);
Arrays.asList(httpResponse.getAllHeaders()).stream().forEach(header -> System.out.println(header.getName() + " : " + header.getValue()));
Thread.sleep(10_000);
List<DataRecord> value = Arrays.asList(objectMapper.readValue(httpResponse.getEntity().getContent(), DataRecord[].class));
The response is ~63Mb and this only happens with large responses. When I run this code I get the following error:
com.fasterxml.jackson.databind.JsonMappingException: Premature end of Content-Length delimited message body (expected: 63476765; received: 404420 (through reference chain: java.lang.Object[][1189])
at com.fasterxml.jackson.databind.JsonMappingException.wrapWithPath(JsonMappingException.java:391)
at com.fasterxml.jackson.databind.JsonMappingException.wrapWithPath(JsonMappingException.java:363)
at com.fasterxml.jackson.databind.deser.std.ObjectArrayDeserializer.deserialize(ObjectArrayDeserializer.java:206)
at com.fasterxml.jackson.databind.deser.std.ObjectArrayDeserializer.deserialize(ObjectArrayDeserializer.java:21)
at com.fasterxml.jackson.databind.ObjectMapper._readMapAndClose(ObjectMapper.java:4001)
at com.fasterxml.jackson.databind.ObjectMapper.readValue(ObjectMapper.java:3058)
at com.company.Class1.queryData(Class1.java:74)
... 5 more
Caused by: org.apache.http.ConnectionClosedException: Premature end of Content-Length delimited message body (expected: 63476765; received: 404420
at org.apache.http.impl.io.ContentLengthInputStream.read(ContentLengthInputStream.java:178)
at org.apache.http.conn.EofSensorInputStream.read(EofSensorInputStream.java:135)
at com.fasterxml.jackson.core.json.UTF8StreamJsonParser._loadMore(UTF8StreamJsonParser.java:205)
at com.fasterxml.jackson.core.json.UTF8StreamJsonParser._parseFloat(UTF8StreamJsonParser.java:1524)
at com.fasterxml.jackson.core.json.UTF8StreamJsonParser._parsePosNumber(UTF8StreamJsonParser.java:1363)
at com.fasterxml.jackson.core.json.UTF8StreamJsonParser.nextFieldName(UTF8StreamJsonParser.java:1025)
at com.fasterxml.jackson.databind.deser.std.MapDeserializer._readAndBind(MapDeserializer.java:448)
at com.fasterxml.jackson.databind.deser.std.MapDeserializer.deserialize(MapDeserializer.java:367)
at com.fasterxml.jackson.databind.deser.std.MapDeserializer.deserialize(MapDeserializer.java:29)
at com.fasterxml.jackson.databind.deser.impl.FieldProperty.deserializeAndSet(FieldProperty.java:136)
at com.fasterxml.jackson.databind.deser.BeanDeserializer.vanillaDeserialize(BeanDeserializer.java:288)
at com.fasterxml.jackson.databind.deser.BeanDeserializer.deserialize(BeanDeserializer.java:151)
at com.fasterxml.jackson.databind.deser.std.ObjectArrayDeserializer.deserialize(ObjectArrayDeserializer.java:195)
However, this error does not happen if I remove
Thread.sleep(10_000);
If the issue was that the client was not getting the full response from the server, I would expect to see the problem exist even if I did not have the Thread sleep in there. The issue also will go away if I shorten the Thread.sleep(...) to only 5 seconds. It seems as though it's a time problem, but since I already have the HttpResponse object before I call Thread.sleep(...), I can't find anything that could be timing out. Any help with this issue is appreciated.

Jersey, An I/O error has occurred while writing a response message

I use SpringBoot and Jersey into my project and I often tackle the following error :
[ERROR - ServerRuntime$Responder - 2018-02-13 13:16:45,983] An I/O error has occurred while writing a response message entity to the container output stream.
org.glassfish.jersey.server.internal.process.MappableException: org.apache.catalina.connector.ClientAbortException: java.io.IOException: Broken pipe
at org.glassfish.jersey.server.internal.MappableExceptionWrapperInterceptor.aroundWriteTo(MappableExceptionWrapperInterceptor.java:92)
at org.glassfish.jersey.message.internal.WriterInterceptorExecutor.proceed(WriterInterceptorExecutor.java:162)
at org.glassfish.jersey.message.internal.MessageBodyFactory.writeTo(MessageBodyFactory.java:1130)
at org.glassfish.jersey.server.ServerRuntime$Responder.writeResponse(ServerRuntime.java:711)
at org.glassfish.jersey.server.ServerRuntime$Responder.processResponse(ServerRuntime.java:444)
at org.glassfish.jersey.server.ServerRuntime$Responder.process(ServerRuntime.java:434)
at org.glassfish.jersey.server.ServerRuntime$2.run(ServerRuntime.java:329)
at org.glassfish.jersey.internal.Errors$1.call(Errors.java:271)
It results with a 503 status response to my client.
Could you explain me why this error occured ?
Thanks

This kind of error usually happens servlet is writing data back on the stream and connection closed from client side.
It is like server in sending some data may be file, string, bytes etc.. but on client side like a browser has closed the connection, like you close the browser tab.
It cased early End of file exception on the server.

I have had this exception when I accidentally passed a null Response at the end of a call. You can verify this in the'caused by' section following the first exception:
Caused by: org.eclipse.jetty.io.EofException: null

Unable read response error

I'm connecting eclipse to neo4j.. And I have 10k values and for small values its working fine.. For 10k values I'm getting this error,
Exception in thread "main"
org.neo4j.driver.v1.exceptions.ClientException: Unable to read
response from server: Expected a string, but got: 0x1

File lock exception when using graphHopper in java program

I'm using GraphHopper in the following way:
GraphHopper hopper = new GraphHopper().forServer();
hopper.setCHEnable(false);
hopper.setGraphHopperLocation(GraphHoperMasterFile);
hopper.setOSMFile(OSMFile);
hopper.setEncodingManager(new EncodingManager("car,bike"));
hopper.importOrLoad();
GHRequest req = new GHRequest().addPoint(new GHPoint (latFrom, lonFrom)).addPoint(new GHPoint(latTo, lonTo))
.setVehicle("car")
.setWeighting("fastest")
.setAlgorithm(AlgorithmOptions.ASTAR_BI);;
req.getHints().put("pass_through", true);
GHResponse res = hopper.route(req);
I obtained the GraphHoperMasterFile by downloading the zip from https://github.com/graphhopper/graphhopper/blob/0.5/docs/core/routing.md.
I obtained the .osm file from http://download.geofabrik.de/europe/great-britain/england/greater-london.html.
I also added the maven dependancy from http://mvnrepository.com/artifact/com.graphhopper/graphhopper-web/0.5.0. I get the sense that it's wrong to have the maven dependancy and reference the graphHopperLocation, but i'm not sure.
When I run this code sometime (not all the time) get the following errors:
java.util.concurrent.ExecutionException: java.lang.RuntimeException: To avoid reading partial data we need to obtain the read lock but it failed.
Caused by: java.lang.RuntimeException: To avoid reading partial data we need to obtain the read lock but it failed.
Caused by: java.nio.channels.OverlappingFileLockException
When it works I get the following:
2016-01-28 08:48:14,551 [pool-1-thread-8] INFO com.graphhopper.GraphHopper - version 0.5.0|2015-08-12T12:33:51+0000 (4,12,3,2,2,1)
2016-01-28 08:48:14,551 [pool-1-thread-8] INFO com.graphhopper.GraphHopper - graph car,bike|RAM_STORE|2D|NoExt|4,12,3,2,2, details:edges:387 339(12MB), nodes:291 068(4MB), name:(2MB), geo:960 828(4MB), bounds:-0.5177850019436703,0.33744369456418666,51.28324388600686,51.69833101402963
I see the thrown error over here https://github.com/graphhopper/graphhopper/blob/master/core/src/main/java/com/graphhopper/GraphHopper.java
How can I stop this error from happening?

Java Casting Error Using CFPOP

My CF9 application running on a windows server pops mail. When I attempt to retrieve the entire body of the message, I sometimes get the following error...
Error:
An exception occurred while retrieving mail.
The cause of this exception was: java.lang.ClassCastException: javax.mail.internet.MimeMessage cannot be cast to javax.mail.internet.MimeBodyPart.
Location:
Line 335 in controllers\Submissions.cfc
Not sure if this is pertinent, but FYI every message will have an image attached and the whole process usually works fine. This problem is intermittent.
My Questions
Any idea what causes this?
Any idea how to catch and resolve this issue?
I suspect I'll need to drop down into java, but not sure where to start.
Code Fragments
<cfscript>
// setup variables array for all cfpop calls
CFPopAttributes = {
server = request.pop.server,
port = request.pop.port,
username = request.pop.username,
password = request.pop.password,
timeout = 300
};
</cfscript>
<cfpop
action="getall"
name="entireEmail"
uid="#uid#"
attachmentpath="#originalsPath#"
attributecollection="#CFPopAttributes#" // Line 335
generateuniquefilenames="true"
/>
NOTE: I added the comment "Line 335" above to communicate exactly where in the code the template is breaking. If I move the attributecollection up or down (before/after other attributes), the error always breaks at the attributecollection line.
Stack Trace
struct [Filtered - 1 of 8 keys hidden]
Detail: An exception occurred while invoking an event handler method from Application.cfc. The method name is: onRequest.
Message: Event handler exception.
RootCause:
[struct]
Detail: The cause of this exception was: java.lang.ClassCastException: javax.mail.internet.MimeMessage cannot be cast to javax.mail.internet.MimeBodyPart.
Message: An exception occurred while retrieving mail.
RootCause:
[struct]
Message: javax.mail.internet.MimeMessage cannot be cast to javax.mail.internet.MimeBodyPart
StackTrace: java.lang.ClassCastException: javax.mail.internet.MimeMessage cannot be cast to javax.mail.internet.MimeBodyPart
at coldfusion.mail.EmailTable.getAttachmentName(EmailTable.java:819)
at coldfusion.mail.EmailTable.populate(EmailTable.java:283)
at coldfusion.mail.PopImpl.getMails(PopImpl.java:241)
at coldfusion.tagext.net.PopTag$1.run(PopTag.java:433)
at java.security.AccessController.doPrivileged(Native Method)
at coldfusion.tagext.net.PopTag.doStartTag(PopTag.java:429)
at coldfusion.runtime.CfJspPage._emptyTcfTag(CfJspPage.java:2799)
at cfSubmissions2ecfc1952269377$funcGETEMAIL.runFunction(D:\home\wwwroot\controllers\Submissions.cfc:335)