spring 从Websphere App Server切换到Open Liberty时出现序列化错误

z9smfwbn  于 2023-10-15  发布在  Spring
关注(0)|答案(1)|浏览(147)

我正在将一个Java 8应用程序从WAS 8.5迁移到Open Liberty 23。应用程序运行，但当某些数据在其中一个REST控制器中被序列化时，会出现下面的异常。未对代码或库进行更改。唯一的区别是，我现在试图运行的应用程序从Eclipse开放自由插件，而不是myeclipse是插件。
我甚至不清楚在哪里寻找这个问题。看起来Spring可能没有使用相同的Jackson版本？注意，相同的代码在WAS中也可以正常工作。为什么在序列化时会出现这样的错误呢？
几点想法：

  • 我假设servlet jar是不同的。我在堆栈跟踪中看到了javax.servlet.http.HttpServlet.service，这就是我提到这一点的原因。我有点困惑，servlet jar是从哪里来的开放自由。OL eclipse插件似乎不包括这一点。
  • WAS有父第一类装入器，如这里所述-https://www.ibm.com/docs/en/was/8.5.5?topic=loading-configuring-class-loaders-server。WAS有一些Jackson类-Jackson Version with WebSphere 8.5.5。我不认为这是问题，因为我的应用程序有Jackson2.11和曾有Jackson1.6.2。Jackson包的名称在这些版本之间发生了变化，所以我的应用程序应该在WAS和OL中使用相同的jackson类。

有什么想法吗？

org.springframework.http.converter.HttpMessageNotWritableException: Could not write JSON: com.test.apps.models.image cannot be cast to java.lang.Integer (through reference chain: com.apps.models.Response["data"]->com.apps.models.SearchResults["otherdata"]->com.apps.models.Information["dataGroup"]->java.util.ArrayList[0]); nested exception is com.fasterxml.jackson.databind.JsonMappingException: com.apps.models.Image cannot be cast to java.lang.Integer (through reference chain: com.apps.models.Response["data"]->com.apps.SearchResults["otherdata"]->com.apps.Information["dataGroup"]->java.util.ArrayList[0])
    at org.springframework.http.converter.json.MappingJackson2HttpMessageConverter.writeInternal(MappingJackson2HttpMessageConverter.java:207)
    at org.springframework.http.converter.AbstractHttpMessageConverter.write(AbstractHttpMessageConverter.java:180)
    at org.springframework.web.servlet.mvc.method.annotation.AbstractMessageConverterMethodProcessor.writeWithMessageConverters(AbstractMessageConverterMethodProcessor.java:143)
    at org.springframework.web.servlet.mvc.method.annotation.AbstractMessageConverterMethodProcessor.writeWithMessageConverters(AbstractMessageConverterMethodProcessor.java:89)
    at org.springframework.web.servlet.mvc.method.annotation.RequestResponseBodyMethodProcessor.handleReturnValue(RequestResponseBodyMethodProcessor.java:189)
    at org.springframework.web.method.support.HandlerMethodReturnValueHandlerComposite.handleReturnValue(HandlerMethodReturnValueHandlerComposite.java:69)
    at org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:122)
    at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandleMethod(RequestMappingHandlerAdapter.java:745)
    at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:685)
    at org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:80)
    at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:919)
    at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:851)
    at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:953)
    at org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:844)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:687)
    at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:829)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:790)
    at com.ibm.ws.webcontainer.servlet.ServletWrapper.service(ServletWrapper.java:1258)
    at com.ibm.ws.webcontainer.servlet.ServletWrapper.handleRequest(ServletWrapper.java:746)
    at com.ibm.ws.webcontainer.servlet.ServletWrapper.handleRequest(ServletWrapper.java:443)
    at com.ibm.ws.webcontainer.filter.WebAppFilterChain.invokeTarget(WebAppFilterChain.java:193)
    at com.ibm.ws.webcontainer.filter.WebAppFilterChain.doFilter(WebAppFilterChain.java:98)
    at com.test.apps.filters.SessionValidationFilter.doFilter(SessionValidationFilter.java:56)
    at com.ibm.ws.webcontainer.filter.FilterInstanceWrapper.doFilter(FilterInstanceWrapper.java:201)
    at com.ibm.ws.webcontainer.filter.WebAppFilterChain.doFilter(WebAppFilterChain.java:91)
    at com.test.apps.filters.Log4JFilter.doFilter(Log4JFilter.java:62)
    at com.ibm.ws.webcontainer.filter.FilterInstanceWrapper.doFilter(FilterInstanceWrapper.java:201)
    at com.ibm.ws.webcontainer.filter.WebAppFilterChain.doFilter(WebAppFilterChain.java:91)
    at com.ibm.ws.webcontainer.filter.WebAppFilterManager.doFilter(WebAppFilterManager.java:1002)
    at com.ibm.ws.webcontainer.filter.WebAppFilterManager.invokeFilters(WebAppFilterManager.java:1140)
    at com.ibm.ws.webcontainer.webapp.WebApp.handleRequest(WebApp.java:5049)
    at com.ibm.ws.webcontainer.osgi.DynamicVirtualHost$2.handleRequest(DynamicVirtualHost.java:314)
    at com.ibm.ws.webcontainer.WebContainer.handleRequest(WebContainer.java:1007)
    at com.ibm.ws.webcontainer.osgi.DynamicVirtualHost$2.run(DynamicVirtualHost.java:279)
    at com.ibm.ws.http.dispatcher.internal.channel.HttpDispatcherLink$TaskWrapper.run(HttpDispatcherLink.java:1159)
    at com.ibm.ws.http.dispatcher.internal.channel.HttpDispatcherLink.wrapHandlerAndExecute(HttpDispatcherLink.java:428)
    at com.ibm.ws.http.dispatcher.internal.channel.HttpDispatcherLink.ready(HttpDispatcherLink.java:387)
    at com.ibm.ws.http.channel.internal.inbound.HttpInboundLink.handleDiscrimination(HttpInboundLink.java:566)
    at com.ibm.ws.http.channel.internal.inbound.HttpInboundLink.handleNewRequest(HttpInboundLink.java:500)
    at com.ibm.ws.http.channel.internal.inbound.HttpInboundLink.processRequest(HttpInboundLink.java:360)
    at com.ibm.ws.http.channel.internal.inbound.HttpICLReadCallback.complete(HttpICLReadCallback.java:70)
    at com.ibm.ws.tcpchannel.internal.WorkQueueManager.requestComplete(WorkQueueManager.java:504)
    at com.ibm.ws.tcpchannel.internal.WorkQueueManager.attemptIO(WorkQueueManager.java:574)
    at com.ibm.ws.tcpchannel.internal.WorkQueueManager.workerRun(WorkQueueManager.java:958)
    at com.ibm.ws.tcpchannel.internal.WorkQueueManager$Worker.run(WorkQueueManager.java:1047)
    at com.ibm.ws.threading.internal.ExecutorServiceImpl$RunnableWrapper.run(ExecutorServiceImpl.java:238)
    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: com.fasterxml.jackson.databind.JsonMappingException: com.test.apps.models.image cannot be cast to java.lang.Integer (through reference chain: com.apps.models.Response["data"]->com.apps.models.SearchResults["otherdata"]->com.apps.models.Information["datagroup"]->java.util.ArrayList[0])
    at com.fasterxml.jackson.databind.JsonMappingException.wrapWithPath(JsonMappingException.java:232)
    at com.fasterxml.jackson.databind.JsonMappingException.wrapWithPath(JsonMappingException.java:211)
    at com.fasterxml.jackson.databind.ser.std.StdSerializer.wrapAndThrow(StdSerializer.java:209)
    at com.fasterxml.jackson.databind.ser.impl.IndexedListSerializer.serializeContentsUsing(IndexedListSerializer.java:124)
    at com.fasterxml.jackson.databind.ser.impl.IndexedListSerializer.serializeContents(IndexedListSerializer.java:63)
    at com.fasterxml.jackson.databind.ser.impl.IndexedListSerializer.serializeContents(IndexedListSerializer.java:21)
    at com.fasterxml.jackson.databind.ser.std.AsArraySerializerBase.serialize(AsArraySerializerBase.java:180)
    at com.fasterxml.jackson.databind.ser.BeanPropertyWriter.serializeAsField(BeanPropertyWriter.java:544)
    at com.fasterxml.jackson.databind.ser.std.BeanSerializerBase.serializeFields(BeanSerializerBase.java:551)
    at com.fasterxml.jackson.databind.ser.BeanSerializer.serialize(BeanSerializer.java:143)
    at com.fasterxml.jackson.databind.ser.BeanPropertyWriter.serializeAsField(BeanPropertyWriter.java:544)
    at com.fasterxml.jackson.databind.ser.std.BeanSerializerBase.serializeFields(BeanSerializerBase.java:551)
    at com.fasterxml.jackson.databind.ser.BeanSerializer.serialize(BeanSerializer.java:143)
    at com.fasterxml.jackson.databind.ser.BeanPropertyWriter.serializeAsField(BeanPropertyWriter.java:544)
    at com.fasterxml.jackson.databind.ser.std.BeanSerializerBase.serializeFields(BeanSerializerBase.java:551)
    at com.fasterxml.jackson.databind.ser.BeanSerializer.se
rialize(BeanSerializer.java:143)
    at com.fasterxml.jackson.databind.ser.DefaultSerializerProvider.serializeValue(DefaultSerializerProvider.java:120)
    at com.fasterxml.jackson.databind.ObjectMapper.writeValue(ObjectMapper.java:1727)
    at org.springframework.http.converter.json.MappingJackson2HttpMessageConverter.writeInternal(MappingJackson2HttpMessageConverter.java:204)
    ... 48 more
Caused by: java.lang.ClassCastException: com.test.apps.models.image cannot be cast to java.lang.Integer
    at com.fasterxml.jackson.databind.ser.std.NumberSerializers$IntegerSerializer.serialize(NumberSerializers.java:61)
    at com.fasterxml.jackson.databind.ser.impl.IndexedListSerializer.serializeContentsUsing(IndexedListSerializer.java:118)
spring

1条答案

按热度按时间
yc0p9oo0

yc0p9oo01#

IBM有一个应用程序二进制迁移工具包（二进制扫描器）。此工具用于扫描应用程序并创建有关迁移问题的报告，包括从WebSphere 8.5迁移到Open Liberty。这个工具也可以帮助其他迁移场景，比如更改java版本。
通过使用二进制扫描程序扫描应用程序，您可以更接近于找到平台迁移引起的问题（请参阅：Migration Toolkit for Application Binaries）
标签：Documentation

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