Error：com.google.gson.internal.LinkedTreeMap cannot be cast to ***

最新推荐文章于 2025-09-24 14:46:42 发布
原创 最新推荐文章于 2025-09-24 14:46:42 发布 · 2.5k 阅读 · 0 ·
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文章标签：

#LinkedTreeMap #TreeMap #LinkedHashMap #HashMap #Map

本文解决在数据转换过程中遇到的错误，如从LinkedTreeMap或LinkedHashMap转换到Map接口的问题，提供有效的代码示例。

数据转换错误，类似的错误还有LinkedHashMap，这个时候，我们应该将子类向父类或接口转换，因为LinkedTreeMap和LinkedHashMap都实现了Map。转换代码：

Map<String, Object> infoMap = (Map<String, Object>) linkTreeMap;

Map<String, Object> infoMap = (Map<String, Object>) linkHashMap;

亲测有效！！！

Android之奔溃提示com.google.gson.internal.LinkedTreeMap cannot be cast to java.util.HashMap
码莎拉蒂
06-29 6885
1 问题 Android端获取服务端的数据然后我直接把数据转hashMap提示错误如下， com.google.gson.internal.LinkedTreeMap cannot be cast to java.util.HashMap 2 解决办法 直接转Map集合即可 (t.data as Map<String, String>).forEach({ ...
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问题 使用 Gson的fromJson方法字符转成对象,操作转换的对象一直报错 java.lang.ClassCastException: com.google.gson.internal.LinkedTreeMap 部分代码如下 public class TestDataPojo<T> extends BaseEntity { private T data;...
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你是否曾在JSON解析时遇到这样的困境：使用`HashMap`会丢失数据顺序，而`LinkedHashMap`在大数据量下查询性能不佳？Gson库中的`LinkedTreeMap`通过巧妙的设计，完美解决了这一矛盾。本文将深入剖析这个隐藏在Gson内部的高性能数据结构，带你理解它如何同时实现O(log n)的查询效率和插入顺序保留，以及它在JSON解析场景中的关键作用。 读完本文你将掌握： - ...
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weixin_39513118的博客
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在用Gson解析服务端返回的数据的时候，返回的数据格式用该是这样： ServiceResult&lt;Map&lt;String, PageObject&gt;&gt; 看上去很复杂的多层嵌套，但是这也没有关系，写清楚就完事了。 在我得到map以后，首先想到的就是根据key来获取value，不同的是这个value是一个对象，那么我用一个对象来接。 PageObject pageObje...
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DovSnier 专栏
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问题 最近在缓存网络到磁盘数据的时候，发生报错：com.google.gson.internal.LinkedTreeMap cannot be cast to XXXBean 比较纳闷，自己的写法如下： BaseEntity<T> tBaseEntity = new Gson().fromJson(o, new TypeToken<BaseEntity&lt...
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04-25 7146
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Client com.example.kucun2 D 鏈嶅姟鍣ㄥ搷搴�: {"status":200,"text":"success","data":{"dingdanChanpin":[],"dingdanChanpinZujian":[],"id":4,"jiaohuo":"Jun 18, 2025 00:00:00","number":"鏌撳彂","xiadan":"Jun 18, 2025 00:00:00","propertyCache":{},"retryCount":0,"state":"NEW"}} 2025-06-18 22:34:22.747 7777-9020 ApiClient com.example.kucun2 D onResponse: {dingdanChanpin=[], dingdanChanpinZujian=[], id=4.0, jiaohuo=Jun 18, 2025 00:00:00, number=鏌撳彂, xiadan=Jun 18, 2025 00:00:00, propertyCache={}, retryCount=0.0, state=NEW} 2025-06-18 22:34:22.748 7777-9020 AndroidRuntime com.example.kucun2 E FATAL EXCEPTION: OkHttp Dispatcher Process: com.example.kucun2, PID: 7777 java.lang.ClassCastException: com.google.gson.internal.LinkedTreeMap cannot be cast to com.google.gson.JsonElement at com.example.kucun2.entity.data.ApiClient$1.onResponse(ApiClient.java:71) at okhttp3.RealCall$AsyncCall.execute(RealCall.java:174) at okhttp3.internal.NamedRunnable.run(NamedRunnable.java:32) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:644) at java.lang.Thread.run(Thread.java:1042) 2025-06-18 22:34:22.761 7777-9020 Process com.example.kucun2 I Sending signal. PID: 7777 SIG: 9加载初始数据时没问题，为毛后面有问题？服务端给的格式差不多
06-19
根据日志，问题出现在ApiClient中解析响应时：`java.lang.ClassCastException:com.google.gson.internal.LinkedTreeMapcannotbecasttocom.google.gson.JsonElement`。这通常发生在尝试将Gson解析的Map对象强制转换为...
2025-09-23 20:04:11.040 8135-8181 JafCommonLog jp.or.jaf.syg E [app] [clientID] [172.16.1.15] [DefaultDispatcher-worker-7:(ID=393)] [JafViewModel:showError:242] [jp.or.jaf.syg.feature.jafrsho07.jafrsho07030.JAFRSHO07030ViewModel.jp.or.jaf.syg.domain.model.jafrsho06.jafrsho06060.ShireiDataInfo cannot be cast to jp.or.jaf.syg.domain.model.jafrsho07.jafrsho07030.TShireiDataInfo:-1] – 処理エラー | duration -1ms 2025-09-23 20:04:11.040 8135-8181 JafCommonLog jp.or.jaf.syg E jp.or.jaf.syg.domain.model.jafrsho06.jafrsho06060.ShireiDataInfo cannot be cast to jp.or.jaf.syg.domain.model.jafrsho07.jafrsho07030.TShireiDataInfo 2025-09-23 20:04:11.040 8135-8181 JafCommonLog jp.or.jaf.syg E java.lang.ClassCastException: jp.or.jaf.syg.domain.model.jafrsho06.jafrsho06060.ShireiDataInfo cannot be cast to jp.or.jaf.syg.domain.model.jafrsho07.jafrsho07030.TShireiDataInfo 2025-09-23 20:04:11.040 8135-8181 JafCommonLog jp.or.jaf.syg E at jp.or.jaf.syg.data.repository.jafrsho07.JAFRSHO07030Repository$getTShireiData$2.invokeSuspend(JAFRSHO07030Repository.kt:81) 2025-09-23 20:04:11.040 8135-8181 JafCommonLog jp.or.jaf.syg E at jp.or.jaf.syg.data.repository.jafrsho07.JAFRSHO07030Repository$getTShireiData$2.invoke(Unknown Source:8) 2025-09-23 20:04:11.040 8135-8181 JafCommonLog jp.or.jaf.syg E at jp.or.jaf.syg.data.repository.jafrsho07.JAFRSHO07030Repository$getTShireiData$2.invoke(Unknown Source:4) 2025-09-23 20:04:11.040 8135-8181 JafCommonLog jp.or.jaf.syg E at kotlinx.coroutines.intrinsics.UndispatchedKt.startUndispatchedOrReturn(Undispatched.kt:78) 2025-09-23 20:04:11.040 8135-8181 JafCommonLog jp.or.jaf.syg E at kotlinx.coroutines.BuildersKt__Builders_commonKt.withContext(Builders.common.kt:167) 2025-09-23 20:04:11.040 8135-8181 JafCommonLog jp.or.jaf.syg E at kotlinx.coroutines.BuildersKt.withContext(Unknown Source:1) 2025-09-23 20:04:11.040 8135-8181 JafCommonLog jp.or.jaf.syg E at jp.or.jaf.syg.data.repository.jafrsho07.JAFRSHO07030Repository.getTShireiData(JAFRSHO07030Repository.kt:80) 2025-09-23 20:04:11.040 8135-8181 JafCommonLog jp.or.jaf.syg E at java.lang.reflect.Method.invoke(Native Method) 2025-09-23 20:04:11.040 8135-8181 JafCommonLog jp.or.jaf.syg E at jp.or.jaf.syg.core.common.aspect.CombinedInvocationHandler.handleSuspendFunction(CombinedInvocationHandler.kt:176) 2025-09-23 20:04:11.040 8135-8181 JafCommonLog jp.or.jaf.syg E at jp.or.jaf.syg.core.common.aspect.CombinedInvocationHandler.invoke(CombinedInvocationHandler.kt:68) 2025-09-23 20:04:11.040 8135-8181 JafCommonLog jp.or.jaf.syg E at java.lang.reflect.Proxy.invoke(Proxy.java:1006) 2025-09-23 20:04:11.040 8135-8181 JafCommonLog jp.or.jaf.syg E at $Proxy133.getTShireiData(Unknown Source) 2025-09-23 20:04:11.040 8135-8181 JafCommonLog jp.or.jaf.syg E at jp.or.jaf.syg.domain.usecase.jafrsho07.jafrsho07030.impl.JAFRSHO07030E001UseCase2.invoke-gIAlu-s(JAFRSHO07030E001UseCase2.kt:40) 2025-09-23 20:04:11.040 8135-8181 JafCommonLog jp.or.jaf.syg E at jp.or.jaf.syg.domain.usecase.jafrsho07.jafrsho07030.impl.JAFRSHO07030E001UseCase2.invoke-gIAlu-s(JAFRSHO07030E001UseCase2.kt:34) 2025-09-23 20:04:11.040 8135-8181 JafCommonLog jp.or.jaf.syg E at java.lang.reflect.Method.invoke(Native Method) 2025-09-23 20:04:11.040 8135-8181 JafCommonLog jp.or.jaf.syg E at jp.or.jaf.syg.core.common.aspect.CombinedInvocationHandler.handleSuspendFunction(CombinedInvocationHandler.kt:176) 2025-09-23 20:04:11.040 8135-8181 JafCommonLog jp.or.jaf.syg E at jp.or.jaf.syg.core.common.aspect.CombinedInvocationHandler.invoke(CombinedInvocationHandler.kt:68) 2025-09-23 20:04:11.040 8135-8181 JafCommonLog jp.or.jaf.syg E at java.lang.reflect.Proxy.invoke(Proxy.java:1006) 2025-09-23 20:04:11.040 8135-8181 JafCommonLog jp.or.jaf.syg E at $Proxy135.invoke-gIAlu-s(Unknown Source) 2025-09-23 20:04:11.040 8135-8181 JafCommonLog jp.or.jaf.syg E at jp.or.jaf.syg.feature.jafrsho07.jafrsho07030.JAFRSHO07030ViewModel.generateNoticeMessage(JAFRSHO07030ViewModel.kt:170) 2025-09-23 20:04:11.040 8135-8181 JafCommonLog jp.or.jaf.syg E at jp.or.jaf.syg.feature.jafrsho07.jafrsho07030.JAFRSHO07030ViewModel.onPopupDisplayTest(JAFRSHO07030ViewModel.kt:207) 2025-09-23 20:04:11.040 8135-8181 JafCommonLog jp.or.jaf.syg E at jp.or.jaf.syg.feature.jafrsho07.jafrsho07030.JAFRSHO07030ViewModel$onEvent$1.invokeSuspend(JAFRSHO07030ViewModel.kt:75) 2025-09-23 20:04:11.040 8135-8181 JafCommonLog jp.or.jaf.syg E at jp.or.jaf.syg.feature.jafrsho07.jafrsho07030.JAFRSHO07030ViewModel$onEvent$1.invoke(Unknown Source:8) 2025-09-23 20:04:11.040 8135-8181 JafCommonLog jp.or.jaf.syg E at jp.or.jaf.syg.feature.jafrsho07.jafrsho07030.JAFRSHO07030ViewModel$onEvent$1.invoke(Unknown Source:2) 2025-09-23 20:04:11.040 8135-8181 JafCommonLog jp.or.jaf.syg E at jp.or.jaf.syg.core.common.base.JafViewModel$launchWithLoading$1.invokeSuspend(JafViewModel.kt:328) 2025-09-23 20:04:11.040 8135-8181 JafCommonLog jp.or.jaf.syg E at jp.or.jaf.syg.core.common.base.JafViewModel$launchWithLoading$1.invoke(Unknown Source:8) 2025-09-23 20:04:11.040 8135-8181 JafCommonLog jp.or.jaf.syg E at jp.or.jaf.syg.core.common.base.JafViewModel$launchWithLoading$1.invoke(Unknown Source:2) 2025-09-23 20:04:11.040 8135-8181 JafCommonLog jp.or.jaf.syg E at jp.or.jaf.syg.core.common.ext.JafCoroutinesKt$runOnIO$2.invokeSuspend(JafCoroutines.kt:133) 2025-09-23 20:04:11.040 8135-8181 JafCommonLog jp.or.jaf.syg E at kotlin.coroutines.jvm.internal.BaseContinuationImpl.resumeWith(ContinuationImpl.kt:33) 2025-09-23 20:04:11.040 8135-8181 JafCommonLog jp.or.jaf.syg E at kotlinx.coroutines.DispatchedTask.run(DispatchedTask.kt:108) 2025-09-23 20:04:11.040 8135-8181 JafCommonLog jp.or.jaf.syg E at kotlinx.coroutines.internal.LimitedDispatcher$Worker.run(LimitedDispatcher.kt:115) 2025-09-23 20:04:11.040 8135-8181 JafCommonLog jp.or.jaf.syg E at kotlinx.coroutines.scheduling.TaskImpl.run(Tasks.kt:103) 2025-09-23 20:04:11.040 8135-8181 JafCommonLog jp.or.jaf.syg E at kotlinx.coroutines.scheduling.CoroutineScheduler.runSafely(CoroutineScheduler.kt:584) 2025-09-23 20:04:11.040 8135-8181 JafCommonLog jp.or.jaf.syg E at kotlinx.coroutines.scheduling.CoroutineScheduler$Worker.executeTask(CoroutineScheduler.kt:793) 2025-09-23 20:04:11.040 8135-8181 JafCommonLog jp.or.jaf.syg E at kotlinx.coroutines.scheduling.CoroutineScheduler$Worker.runWorker(CoroutineScheduler.kt:697) 2025-09-23 20:04:11.040 8135-8181 JafCommonLog jp.or.jaf.syg E at kotlinx.coroutines.scheduling.CoroutineScheduler$Worker.run(CoroutineScheduler.kt:684) 2025-09-23 20:04:11.040 8135-8181 JafCommonLog jp.or.jaf.syg E 2025-09-23 20:04:11.082 8135-8146 jp.or.jaf.syg jp.or.jaf.syg I Background concurrent copying GC freed 156347(11MB) AllocSpace objects, 57(1148KB) LOS objects, 49% free, 11MB/22MB, paused 23us total 160.816ms 2025-09-23 20:04:11.086 8135-8135 メッセージダイアログ jp.or.jaf.syg I size:3 2025-09-23 20:04:11.086 8135-8135 メッセージダイアログ jp.or.jaf.syg I メッセージが見つかりません 2025-09-23 20:04:11.086 8135-8135 メッセージダイアログ jp.or.jaf.syg I getResult: 2025-09-23 20:04:11.087 8135-8135 JafCommonLog jp.or.jaf.syg I [app] [clientID] [172.16.1.15] [main:(ID=2)] [Jafrsho99020MessagePopupKt:Jafrsho99020MessagePopup:invoke:170] 2025-09-23 20:04:11.090 8135-8181 JafCommonLog jp.or.jaf.syg D [app] [clientID] [172.16.1.15] [DefaultDispatcher-worker-7:(ID=393)] [JafLoggingAspect:beforeMethod:55] [jp.or.jaf.syg.domain.usecase.jafrsho07.jafrsho07030.impl.JAFRSHO07030E001UseCase2.invoke-gIAlu-s(ShireiCancelNoticeMo, Continuation at jp.o):-1] – 処理開始 2025-09-23 20:04:11.091 8135-8181 JafCommonLog jp.or.jaf.syg D [app] [clientID] [172.16.1.15] [DefaultDispatcher-worker-7:(ID=393)] [JafLoggingAspect:beforeMethod:55] [jp.or.jaf.syg.data.repository.jafrsho07.JAFRSHO07030Repository.getTShireiData(100000001, Continuation at jp.o):-1] – 処理開始 2025-09-23 20:04:11.093 8135-8181 JafCommonLog jp.or.jaf.syg D [app] [clientID] [172.16.1.15] [DefaultDispatcher-worker-7:(ID=393)] [JafLoggingAspect:beforeMethod:55] [jp.or.jaf.syg.data.local.dao.transaction.TShireiDataDao_Impl.getTShireiData3(100000001, Continuation at jp.o):-1] – 処理開始 2025-09-23 20:04:11.096 8135-8176 JafCommonLog jp.or.jaf.syg D [app] [clientID] [172.16.1.15] [arch_disk_io_2:(ID=388)] [JafLoggingAspect:afterMethod:82] [jp.or.jaf.syg.data.local.dao.transaction.TShireiDataDao_Impl.getTShireiData3:-1] – 処理終了 [=> Result: TShireiData(base=TShireiDataBa] | duration 3ms 2025-09-23 20:04:11.098 8135-8176 JafCommonLog jp.or.jaf.syg E [app] [clientID] [172.16.1.15] [arch_disk_io_2:(ID=388)] [JafLoggingAspect:onError:98] [jp.or.jaf.syg.data.repository.jafrsho07.JAFRSHO07030Repository.getTShireiData:-1] – 処理エラー | duration 6ms jp.or.jaf.syg.domain.model.jafrsho06.jafrsho06060.ShireiDataInfo cannot be cast to jp.or.jaf.syg.domain.model.jafrsho07.jafrsho07030.TShireiDataInfo java.lang.ClassCastException: jp.or.jaf.syg.domain.model.jafrsho06.jafrsho06060.ShireiDataInfo cannot be cast to jp.or.jaf.syg.domain.model.jafrsho07.jafrsho07030.TShireiDataInfo at jp.or.jaf.syg.data.repository.jafrsho07.JAFRSHO07030Repository$getTShireiData$2.invokeSuspend(JAFRSHO07030Repository.kt:81) at kotlin.coroutines.jvm.internal.BaseContinuationImpl.resumeWith(ContinuationImpl.kt:33) at jp.or.jaf.syg.core.common.aspect.CombinedInvocationHandler$CombinedLoggingContinuation.resumeWith(CombinedInvocationHandler.kt:222) at kotlinx.coroutines.DispatchedTaskKt.resume(DispatchedTask.kt:179) at kotlinx.coroutines.DispatchedTaskKt.dispatch(DispatchedTask.kt:168) at kotlinx.coroutines.CancellableContinuationImpl.dispatchResume(CancellableContinuationImpl.kt:474) at kotlinx.coroutines.CancellableContinuationImpl.resumeImpl(CancellableContinuationImpl.kt:508) at kotlinx.coroutines.CancellableContinuationImpl.resumeImpl$default(CancellableContinuationImpl.kt:497) at kotlinx.coroutines.CancellableContinuationImpl.resumeWith(CancellableContinuationImpl.kt:368) at androidx.room.CoroutinesRoom$Companion$execute$4$job$1.invokeSuspend(CoroutinesRoom.kt:88) at kotlin.coroutines.jvm.internal.BaseContinuationImpl.resumeWith(ContinuationImpl.kt:33) at kotlinx.coroutines.DispatchedTask.run(DispatchedTask.kt:108) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1167) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:641) at java.lang.Thread.run(Thread.java:764) 2025-09-23 20:04:11.099 8135-8176 JafCommonLog jp.or.jaf.syg E [app] [clientID] [172.16.1.15] [arch_disk_io_2:(ID=388)] [JafLoggingAspect:onError:98] [jp.or.jaf.syg.domain.usecase.jafrsho07.jafrsho07030.impl.JAFRSHO07030E001UseCase2.invoke-gIAlu-s:-1] – 処理エラー | duration 11ms jp.or.jaf.syg.domain.model.jafrsho06.jafrsho06060.ShireiDataInfo cannot be cast to jp.or.jaf.syg.domain.model.jafrsho07.jafrsho07030.TShireiDataInfo java.lang.ClassCastException: jp.or.jaf.syg.domain.model.jafrsho06.jafrsho06060.ShireiDataInfo cannot be cast to jp.or.jaf.syg.domain.model.jafrsho07.jafrsho07030.TShireiDataInfo at jp.or.jaf.syg.data.repository.jafrsho07.JAFRSHO07030Repository$getTShireiData$2.invokeSuspend(JAFRSHO07030Repository.kt:81) at kotlin.coroutines.jvm.internal.BaseContinuationImpl.resumeWith(ContinuationImpl.kt:33) at jp.or.jaf.syg.core.common.aspect.CombinedInvocationHandler$CombinedLoggingContinuation.resumeWith(CombinedInvocationHandler.kt:222) at kotlinx.coroutines.DispatchedTaskKt.resume(DispatchedTask.kt:179) at kotlinx.coroutines.DispatchedTaskKt.dispatch(DispatchedTask.kt:168) at kotlinx.coroutines.CancellableContinuationImpl.dispatchResume(CancellableContinuationImpl.kt:474) at kotlinx.coroutines.CancellableContinuationImpl.resumeImpl(CancellableContinuationImpl.kt:508) at kotlinx.coroutines.CancellableContinuationImpl.resumeImpl$default(CancellableContinuationImpl.kt:497) at kotlinx.coroutines.CancellableContinuationImpl.resumeWith(CancellableContinuationImpl.kt:368) at androidx.room.CoroutinesRoom$Companion$execute$4$job$1.invokeSuspend(CoroutinesRoom.kt:88) at kotlin.coroutines.jvm.internal.BaseContinuationImpl.resumeWith(ContinuationImpl.kt:33) at kotlinx.coroutines.DispatchedTask.run(DispatchedTask.kt:108) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1167) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:641) at java.lang.Thread.run(Thread.java:764) 2025-09-23 20:04:11.101 8135-8176 JafCommonLog jp.or.jaf.syg E [app] [clientID] [172.16.1.15] [arch_disk_io_2:(ID=388)] [JafViewModel:showError:242] [jp.or.jaf.syg.feature.jafrsho07.jafrsho07030.JAFRSHO07030ViewModel.jp.or.jaf.syg.domain.model.jafrsho06.jafrsho06060.ShireiDataInfo cannot be cast to jp.or.jaf.syg.domain.model.jafrsho07.jafrsho07030.TShireiDataInfo:-1] – 処理エラー | duration -1ms jp.or.jaf.syg.domain.model.jafrsho06.jafrsho06060.ShireiDataInfo cannot be cast to jp.or.jaf.syg.domain.model.jafrsho07.jafrsho07030.TShireiDataInfo java.lang.ClassCastException: jp.or.jaf.syg.domain.model.jafrsho06.jafrsho06060.ShireiDataInfo cannot be cast to jp.or.jaf.syg.domain.model.jafrsho07.jafrsho07030.TShireiDataInfo at jp.or.jaf.syg.data.repository.jafrsho07.JAFRSHO07030Repository$getTShireiData$2.invokeSuspend(JAFRSHO07030Repository.kt:81) at kotlin.coroutines.jvm.internal.BaseContinuationImpl.resumeWith(ContinuationImpl.kt:33) at jp.or.jaf.syg.core.common.aspect.CombinedInvocationHandler$CombinedLoggingContinuation.resumeWith(CombinedInvocationHandler.kt:222) at kotlinx.coroutines.DispatchedTaskKt.resume(DispatchedTask.kt:179) at kotlinx.coroutines.DispatchedTaskKt.dispatch(DispatchedTask.kt:168) at kotlinx.coroutines.CancellableContinuationImpl.dispatchResume(CancellableContinuationImpl.kt:474) at kotlinx.coroutines.CancellableContinuationImpl.resumeImpl(CancellableContinuationImpl.kt:508) at kotlinx.coroutines.CancellableContinuationImpl.resumeImpl$default(CancellableContinuationImpl.kt:497) at kotlinx.coroutines.CancellableContinuationImpl.resumeWith(CancellableContinuationImpl.kt:368) at androidx.room.CoroutinesRoom$Companion$execute$4$job$1.invokeSuspend(CoroutinesRoom.kt:88) at kotlin.coroutines.jvm.internal.BaseContinuationImpl.resumeWith(ContinuationImpl.kt:33) at kotlinx.coroutines.DispatchedTask.run(DispatchedTask.kt:108) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1167) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:641) at java.lang.Thread.run(Thread.java:764) 2025-09-23 20:04:11.142 8135-8170 OpenGLRenderer jp.or.jaf.syg D endAllActiveAnimators on 0x76388889b500 (UnprojectedRipple) with handle 0x763868036120 2025-09-23 20:04:11.190 1564-1578 memtrack system_server E Couldn't load memtrack module 2025-09-23 20:04:11.190 1564-1578 android.os.Debug system_server W failed to get memory consumption info: -1 2025-09-23 20:04:11.195 1434-1649 SurfaceFlinger surfaceflinger W Attempting to set client state on removed layer: jp.or.jaf.syg/jp.or.jaf.syg.SygMainActivity#1 2025-09-23 20:04:11.195 1434-1649 SurfaceFlinger surfaceflinger W Attempting to destroy on removed layer: jp.or.jaf.syg/jp.or.jaf.syg.SygMainActivity#1 2025-09-23 20:04:11.245 1434-2114 SurfaceFlinger surfaceflinger W Attempting to set client state on removed layer: Dim Layer for - Task=61#0 2025-09-23 20:04:11.245 1434-2114 SurfaceFlinger surfaceflinger W Attempting to destroy on removed layer: Dim Layer for - Task=61#0
09-24
> cannot be cast to > jp.or.jaf.syg.domain.model.jafrsho07.jafrsho07030.TShireiDataInfo > ``` > > 简单说就是：**从数据库取出的对象是旧模块（06060）的类，但代码试图把它当成新模块（07030）的类来用 → ...
com.google.gson.internal.LinkedTreeMap cannot be cast to XXX
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Gson解析 com.google.gson.internal.LinkedTreeMap cannot be cast to XXX
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问题描述：项目从网络获取数据保存到sharedpreferences，再从sharedpreferences获取。由于要保存到shp的是arraylist，所以需要使用Gson解析，在解析过程中报了如下错误： com.google.gson.internal.LinkedTreeMap cannot be cast to XXX 原先代码如下： 将list转化为json字符串保存在本地： /** * 保存List */ public static <T> void
Retrofit 泛型解析遇到com.google.gson.internal.LinkedTreeMap cannot be cast to object
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最新发布
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出现 `java.lang.ClassCastException: com.google.gson.internal.LinkedTreeMap cannot be cast to com.qish.tenmentapp.entity.House` 异常，是因为 `result.getData()` 返回的是 `LinkedTreeMap` 类型的数据，不能直接将其强制转换为 `List<House>` 类型。可以通过将数据先转换为 JSON 字符串，再将 JSON 字符串转换为对应的 `House` 对象列表来解决。 以下是解决该问题的示例代码： ```java import com.google.gson.Gson; import com.google.gson.JsonArray; import com.google.gson.JsonElement; import com.google.gson.JsonParser; import java.util.ArrayList; import java.util.List; // 假设 House 类的定义如下 class House { // House 类的属性和方法 } // 假设 Result 类的定义如下 class Result { private Object data; public Object getData() { return data; } public void setData(Object data) { this.data = data; } } public class Main { public static <T> List<T> getObjectList(String jsonString, Class<T> cls) { List<T> list = new ArrayList<>(); try { Gson gson = new Gson(); JsonArray arry = new JsonParser().parse(jsonString).getAsJsonArray(); for (JsonElement jsonElement : arry) { list.add(gson.fromJson(jsonElement, cls)); } } catch (Exception e) { e.printStackTrace(); } return list; } public static void main(String[] args) { Result result = new Result(); // 假设 result.getData() 返回的数据 // 这里省略了具体的赋值操作 // 将 data 转换为 JSON 字符串 Gson gson = new Gson(); String jsonString = gson.toJson(result.getData()); // 将 JSON 字符串转换为 List<House> List<House> records = getObjectList(jsonString, House.class); } } ``` 在上述代码中，首先定义了 `House` 类和 `Result` 类，然后实现了 `getObjectList` 方法，该方法用于将 JSON 字符串转换为指定类型的对象列表。在 `main` 方法中，将 `result.getData()` 转换为 JSON 字符串，再调用 `getObjectList` 方法将 JSON 字符串转换为 `List<House>`。
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