1.问题
接上一篇https://blog.csdn.net/yy339452689/article/details/103717631请求超时问题，继续解决请求时报的请求体缺失问题。
问题如下图：
该问题是在查看线上异常日志时发现，但并没有对线上业务产生很大影响，可能是并发量并不高。但是刚好业务不很忙，所以开始优化这个异常问题。因为是偶现，所以觉得应该不是代码层面的问题，因为如果是代码层面的问题，那应该会高频率出现问题。
2.解决
①说下个人解决问题时的思路，一开始认为不是代码层面问题。于是考虑是否是网关层面或是Nginx限流等，导致请求体缺失。
②后来，在本地运行代码。通过Jmeter压测工具，对异常接口进行压测，发现偶现一个异常：
feign.codec.DecodeException: JSON parse error: Can not deserialize value of type java.util.Date from String "2017-04-27 17:20:23": not a valid representation (error: Failed to parse Date value '2017-04-27 17:20:23': Unparseable date: "2017-04-27 17:20:23"); nested exception is com.fasterxml.jackson.databind.exc.InvalidFormatException: Can not deserialize value of type java.util.Date from String "2017-04-27 17:20:23": not a valid representation (error: Failed to parse Date value '2017-04-27 17:20:23': Unparseable date: "2017-04-27 17:20:23")
at [Source: java.io.PushbackInputStream@28c81dd2; line: 1, column: 296] (through reference chain: com.dafycredit.domain.Result["data"]->java.util.ArrayList[0]->com.dafycredit.cashLoan.dto.resp.CsAddressRespDTO["updateTime"])
at feign.SynchronousMethodHandler.decode(SynchronousMethodHandler.java:169)
at feign.SynchronousMethodHandler.executeAndDecode(SynchronousMethodHandler.java:133)
at feign.SynchronousMethodHandler.invoke(SynchronousMethodHandler.java:76)
at feign.ReflectiveFeign$FeignInvocationHandler.invoke(ReflectiveFeign.java:103)
at com.sun.proxy.$Proxy135.getAddressByPersonId(Unknown Source)
at com.dafycredit.loan.manager.impl.AddressCodeManagerImpl.getAddressCode(AddressCodeManagerImpl.java:47)
at com.dafycredit.loan.service.impl.JSYQualificationServiceImpl.getEnableRouter(JSYQualificationServiceImpl.java:217)
at com.dafycredit.loan.service.impl.JSYQualificationServiceImpl.getJSYQualification(JSYQualificationServiceImpl.java:172)
at com.dafycredit.loan.service.impl.JSYQualificationServiceImpl$$FastClassBySpringCGLIB$$ff45ed87.invoke(<generated>)
at org.springframework.cglib.proxy.MethodProxy.invoke(MethodProxy.java:204)
at org.springframework.aop.framework.CglibAopProxy$CglibMethodInvocation.invokeJoinpoint(CglibAopProxy.java:738)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:157)
at com.dafycredit.log.aop.ServiceLogAspect.invoke(ServiceLogAspect.java:55)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179)
at org.springframework.aop.interceptor.ExposeInvocationInterceptor.invoke(ExposeInvocationInterceptor.java:92)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179)
at org.springframework.aop.framework.CglibAopProxy$DynamicAdvisedInterceptor.intercept(CglibAopProxy.java:673)
at com.dafycredit.loan.service.impl.JSYQualificationServiceImpl$$EnhancerBySpringCGLIB$$fac427e6.getJSYQualification(<generated>)
at sun.reflect.GeneratedMethodAccessor221.invoke(Unknown Source)
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:205)
at org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:133)
at org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:97)
at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandlerMethod(RequestMappingHandlerAdapter.java:827)
at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:738)
at org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:85)
at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:967)
at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:901)
at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:970)
at org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:872)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:661)
at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:846)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:742)
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:52)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
at org.springframework.boot.web.filter.ApplicationContextHeaderFilter.doFilterInternal(ApplicationContextHeaderFilter.java:55)
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
at com.dafycredit.loan.configuration.RequestFilter.doFilter(RequestFilter.java:31)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
at org.springframework.boot.actuate.trace.WebRequestTraceFilter.doFilterInternal(WebRequestTraceFilter.java:110)
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
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.RequestContextFilter.doFilterInternal(RequestContextFilter.java:99)
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
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.HttpPutFormContentFilter.doFilterInternal(HttpPutFormContentFilter.java:108)
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
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.HiddenHttpMethodFilter.doFilterInternal(HiddenHttpMethodFilter.java:81)
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
at org.springframework.cloud.sleuth.instrument.web.TraceFilter.doFilter(TraceFilter.java:166)
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.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:197)
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
at org.springframework.boot.actuate.autoconfigure.MetricsFilter.doFilterInternal(MetricsFilter.java:106)
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:199)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:96)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:504)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:140)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:81)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:87)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:342)
at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:803)
at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:66)
at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:790)
at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1459)
at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
at java.lang.Thread.run(Thread.java:748)
Caused by: org.springframework.http.converter.HttpMessageNotReadableException: JSON parse error: Can not deserialize value of type java.util.Date from String "2017-04-27 17:20:23": not a valid representation (error: Failed to parse Date value '2017-04-27 17:20:23': Unparseable date: "2017-04-27 17:20:23"); nested exception is com.fasterxml.jackson.databind.exc.InvalidFormatException: Can not deserialize value of type java.util.Date from String "2017-04-27 17:20:23": not a valid representation (error: Failed to parse Date value '2017-04-27 17:20:23': Unparseable date: "2017-04-27 17:20:23")
at [Source: java.io.PushbackInputStream@28c81dd2; line: 1, column: 296] (through reference chain: com.dafycredit.domain.Result["data"]->java.util.ArrayList[0]->com.dafycredit.cashLoan.dto.resp.CsAddressRespDTO["updateTime"])
at org.springframework.http.converter.json.AbstractJackson2HttpMessageConverter.readJavaType(AbstractJackson2HttpMessageConverter.java:238)
at org.springframework.http.converter.json.AbstractJackson2HttpMessageConverter.read(AbstractJackson2HttpMessageConverter.java:223)
at org.springframework.web.client.HttpMessageConverterExtractor.extractData(HttpMessageConverterExtractor.java:96)
at org.springframework.cloud.netflix.feign.support.SpringDecoder.decode(SpringDecoder.java:59)
at org.springframework.cloud.netflix.feign.support.ResponseEntityDecoder.decode(ResponseEntityDecoder.java:45)
at feign.SynchronousMethodHandler.decode(SynchronousMethodHandler.java:165)
... 88 common frames omitted
Caused by: com.fasterxml.jackson.databind.exc.InvalidFormatException: Can not deserialize value of type java.util.Date from String "2017-04-27 17:20:23": not a valid representation (error: Failed to parse Date value '2017-04-27 17:20:23': Unparseable date: "2017-04-27 17:20:23")
at [Source: java.io.PushbackInputStream@28c81dd2; line: 1, column: 296] (through reference chain: com.dafycredit.domain.Result["data"]->java.util.ArrayList[0]->com.dafycredit.cashLoan.dto.resp.CsAddressRespDTO["updateTime"])
at com.fasterxml.jackson.databind.exc.InvalidFormatException.from(InvalidFormatException.java:74)
at com.fasterxml.jackson.databind.DeserializationContext.weirdStringException(DeserializationContext.java:1410)
at com.fasterxml.jackson.databind.DeserializationContext.handleWeirdStringValue(DeserializationContext.java:926)
at com.fasterxml.jackson.databind.deser.std.StdDeserializer._parseDate(StdDeserializer.java:819)
at com.fasterxml.jackson.databind.deser.std.StdDeserializer._parseDate(StdDeserializer.java:788)
at com.fasterxml.jackson.databind.deser.std.DateDeserializers$DateBasedDeserializer._parseDate(DateDeserializers.java:172)
at com.fasterxml.jackson.databind.deser.std.DateDeserializers$DateDeserializer.deserialize(DateDeserializers.java:259)
at com.fasterxml.jackson.databind.deser.std.DateDeserializers$DateDeserializer.deserialize(DateDeserializers.java:242)
at com.fasterxml.jackson.databind.deser.SettableBeanProperty.deserialize(SettableBeanProperty.java:504)
at com.fasterxml.jackson.databind.deser.impl.MethodProperty.deserializeAndSet(MethodProperty.java:104)
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)
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:104)
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:3814)
at com.fasterxml.jackson.databind.ObjectMapper.readValue(ObjectMapper.java:2938)
at org.springframework.http.converter.json.AbstractJackson2HttpMessageConverter.readJavaType(AbstractJackson2HttpMessageConverter.java:235)
... 93 common frames omitted于是定位到错误所在，原来是因为分布式接口当中，有feign调用，然后在调用过程中因jackson日期反序列化问题导致。
③最终解决方案
在application.xml中加入如下配置：
spring.mvc.date-format=yyyy-MM-dd HH:mm:ss
spring.jackson.date-format=yyyy-MM-dd HH:mm:ss
spring.jackson.time-zone=GMT+8最后再次压测，没有再出现了！！！这种偶现问题，确实很难排查，花了不少时间，不过还得冷静分析与找对方向。希望可以帮到遇到同样问题的朋友！！
3.补充
问题分析：对于上面的请求参数体缺失，因为是在服务器上，由全局异常捕捉到的，所以其实并没有提供明确的异常源头代码。后来，本人在开发环境，通过Jmeter压测工具，在本地模拟请求。最终定位到具体原因，该异常是由于分布式服务当中，同一个请求中，因某个服务的方法调用时，发生了Feign的时间格式反序列化错误（这个才是异常根源），从而导致请求当中出现报错。但是这里有一个疑惑点，这种异常在请求当中并不是一定出现，而是偶现。所以当时排查的时候，也给我产生了一定的迷惑。
解决方式：
其实网上有很多种，如下：
①//在实体类的日期字段上方加注解，如下：
@JsonFormat(locale="zh", timezone="GMT+8", pattern="yyyy-MM-dd HH:mm:ss")
②以及此链接中的方式：http://www.manongjc.com/article/33231.html
方式很多，但是我这边的使用的全局方式，因为以第一种方式，我个人感觉是治标不治本，不推荐！
而我的问题也是通过上面的配置方法解决。
2020-1-7再次补充：
经线上测试验证，请求体丢失原因并非此日期格式化问题导致，但日期格式化也是请求报错的一个问题。而对于请求体缺失问题，在线上也是偶现，并且没有业务影响。目前还没没有找到具体原因，推测是由于前端的预请求options造成。后续跟进更新。同时希望有经验的大佬不吝赐教，这个问题的解决方式。
