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[Java][Jackson] ObjectMapper.readValue(URL, CLASS) 진행 중 Read timed out 증상

날짜:



특별히 문제가 없어보이는데 아래의 로그와 같이 Exception 이 발생한 경우가 있었다.


1004lucifer

com.fasterxml.jackson.databind.JsonMappingException: Read timed out (through reference chain: kr.co._1004lucifer.vo.UserVoClass1["result"]->kr.co._1004lucifer.vo.UserVoClass2["list"]->java.util.ArrayList[15])
        at com.fasterxml.jackson.databind.JsonMappingException.wrapWithPath(JsonMappingException.java:388)
        at com.fasterxml.jackson.databind.JsonMappingException.wrapWithPath(JsonMappingException.java:360)
        at com.fasterxml.jackson.databind.deser.std.CollectionDeserializer.deserialize(CollectionDeserializer.java:308)
        at com.fasterxml.jackson.databind.deser.std.CollectionDeserializer.deserialize(CollectionDeserializer.java:259)
        at com.fasterxml.jackson.databind.deser.std.CollectionDeserializer.deserialize(CollectionDeserializer.java:26)
        at com.fasterxml.jackson.databind.deser.SettableBeanProperty.deserialize(SettableBeanProperty.java:504)
        at com.fasterxml.jackson.databind.deser.impl.MethodProperty.deserializeAndSet(MethodProperty.java:101)
        at com.fasterxml.jackson.databind.deser.BeanDeserializer.vanillaDeserialize(BeanDeserializer.java:276)
        at com.fasterxml.jackson.databind.deser.BeanDeserializer.deserialize(BeanDeserializer.java:140)
        at com.fasterxml.jackson.databind.deser.SettableBeanProperty.deserialize(SettableBeanProperty.java:504)
        at com.fasterxml.jackson.databind.deser.impl.MethodProperty.deserializeAndSet(MethodProperty.java:101)
        at com.fasterxml.jackson.databind.deser.BeanDeserializer.vanillaDeserialize(BeanDeserializer.java:276)
        at com.fasterxml.jackson.databind.deser.BeanDeserializer.deserialize(BeanDeserializer.java:140)
        at com.fasterxml.jackson.databind.ObjectMapper._readMapAndClose(ObjectMapper.java:3798)
        at com.fasterxml.jackson.databind.ObjectMapper.readValue(ObjectMapper.java:2797)
        at kr.co._1004lucifer.UserService.getList(UserService.java:33)
        at kr.co._1004lucifer.UserService.getListAllPage(UserService.java:56)
        at kr.co._1004lucifer.UserController.mergeAll(UserController.java:50)
        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.scheduling.support.ScheduledMethodRunnable.run(ScheduledMethodRunnable.java:65)
        at org.springframework.scheduling.support.DelegatingErrorHandlingRunnable.run(DelegatingErrorHandlingRunnable.java:54)
        at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
        at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308)
        at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180)
        at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294)
        at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
        at java.lang.Thread.run(Thread.java:748)
Caused by: java.net.SocketTimeoutException: Read timed out
        at java.net.SocketInputStream.socketRead0(Native Method)
        at java.net.SocketInputStream.socketRead(SocketInputStream.java:116)
        at java.net.SocketInputStream.read(SocketInputStream.java:171)
        at java.net.SocketInputStream.read(SocketInputStream.java:141)
        at sun.security.ssl.InputRecord.readFully(InputRecord.java:465)
        at sun.security.ssl.InputRecord.readV3Record(InputRecord.java:593)
        at sun.security.ssl.InputRecord.read(InputRecord.java:532)
        at sun.security.ssl.SSLSocketImpl.readRecord(SSLSocketImpl.java:983)
        at sun.security.ssl.SSLSocketImpl.readDataRecord(SSLSocketImpl.java:940)
        at sun.security.ssl.AppInputStream.read(AppInputStream.java:105)
        at java.io.BufferedInputStream.fill(BufferedInputStream.java:246)
        at java.io.BufferedInputStream.read1(BufferedInputStream.java:286)
        at java.io.BufferedInputStream.read(BufferedInputStream.java:345)
        at sun.net.www.http.ChunkedInputStream.readAheadBlocking(ChunkedInputStream.java:552)
        at sun.net.www.http.ChunkedInputStream.readAhead(ChunkedInputStream.java:609)
        at sun.net.www.http.ChunkedInputStream.read(ChunkedInputStream.java:696)
        at java.io.FilterInputStream.read(FilterInputStream.java:133)
        at sun.net.www.protocol.http.HttpURLConnection$HttpInputStream.read(HttpURLConnection.java:3393)
        at com.fasterxml.jackson.core.json.UTF8StreamJsonParser._loadMore(UTF8StreamJsonParser.java:204)
        at com.fasterxml.jackson.core.json.UTF8StreamJsonParser._loadMoreGuaranteed(UTF8StreamJsonParser.java:2404)
        at com.fasterxml.jackson.core.json.UTF8StreamJsonParser._decodeUtf8_3(UTF8StreamJsonParser.java:3344)
        at com.fasterxml.jackson.core.json.UTF8StreamJsonParser._finishString2(UTF8StreamJsonParser.java:2523)
        at com.fasterxml.jackson.core.json.UTF8StreamJsonParser._finishAndReturnString(UTF8StreamJsonParser.java:2469)
        at com.fasterxml.jackson.core.json.UTF8StreamJsonParser.getText(UTF8StreamJsonParser.java:315)
        at com.fasterxml.jackson.databind.deser.std.StringDeserializer.deserialize(StringDeserializer.java:31)
        at com.fasterxml.jackson.databind.deser.std.StringDeserializer.deserialize(StringDeserializer.java:11)
        at com.fasterxml.jackson.databind.deser.SettableBeanProperty.deserialize(SettableBeanProperty.java:504)
        at com.fasterxml.jackson.databind.deser.impl.MethodProperty.deserializeAndSet(MethodProperty.java:101)
        at com.fasterxml.jackson.databind.deser.BeanDeserializer.vanillaDeserialize(BeanDeserializer.java:276)
        at com.fasterxml.jackson.databind.deser.BeanDeserializer.deserialize(BeanDeserializer.java:140)
        at com.fasterxml.jackson.databind.deser.std.CollectionDeserializer.deserialize(CollectionDeserializer.java:287)
        ... 28 more









응답이 늦어 JAVA default Timeout 시간을 초과했나보다.
1004lucifer
아래와 같이 SpringBoot 기동 시 JAVA로 시간을 셋팅해 줬더니 이후 문제가 발생하지 않았다.


@SpringBootApplication
@EnableScheduling
@EnableAsync
public class MainApplication extends SpringBootServletInitializer implements CommandLineRunner {

 @Override
 protected SpringApplicationBuilder configure(SpringApplicationBuilder builder) {
  System.setProperty("sun.net.client.defaultConnectTimeout", "10000");
  System.setProperty("sun.net.client.defaultReadTimeout", "10000");
  return builder.sources(MainApplication.class);
 }
 
 ...
 
}


java, jackson, timeout, 


참고
- https://stackoverflow.com/questions/34166611/jackson-json-how-to-set-http-connection-and-read-timeout
- https://docs.oracle.com/javase/7/docs/technotes/guides/net/properties.html




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