Question

从Moshi 1.9.1升级到1.8.0后，我遇到以下崩溃和堆栈跟踪：

java.lang.IllegalArgumentException: Cannot serialize Kotlin type com.garpr.android.data.models.RankedPlayer. Reflective serialization of Kotlin classes without using kotlin-reflect has undefined and unexpected behavior. Please use KotlinJsonAdapter from the moshi-kotlin artifact or use code gen from the moshi-kotlin-codegen artifact.
for class com.garpr.android.data.models.RankedPlayer
for class com.garpr.android.data.models.AbsPlayer

    at com.squareup.moshi.Moshi$LookupChain.exceptionWithLookupStack(Moshi.java:349)
    at com.squareup.moshi.Moshi.adapter(Moshi.java:150)
    at com.squareup.moshi.Moshi.adapter(Moshi.java:98)
    at com.squareup.moshi.AdapterMethodsFactory$AdapterMethod.bind(AdapterMethodsFactory.java:313)
    at com.squareup.moshi.AdapterMethodsFactory.create(AdapterMethodsFactory.java:62)
    at com.squareup.moshi.Moshi.adapter(Moshi.java:138)
    at com.squareup.moshi.Moshi.adapter(Moshi.java:98)
    at com.squareup.moshi.Moshi.adapter(Moshi.java:72)
    at com.garpr.android.data.converters.AbsPlayerConverterTest.setUp(AbsPlayerConverterTest.kt:76)
    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.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:50)
    at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
    at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:47)
    at org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:24)
    at org.junit.internal.runners.statements.RunAfters.evaluate(RunAfters.java:27)
    at org.robolectric.RobolectricTestRunner$HelperTestRunner$1.evaluate(RobolectricTestRunner.java:546)
    at org.robolectric.internal.SandboxTestRunner$2.lambda$evaluate$0(SandboxTestRunner.java:252)
    at org.robolectric.internal.bytecode.Sandbox.lambda$runOnMainThread$0(Sandbox.java:89)
    at java.util.concurrent.FutureTask.run(FutureTask.java:266)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
    at java.lang.Thread.run(Thread.java:748)
Caused by: java.lang.IllegalArgumentException: Cannot serialize Kotlin type com.garpr.android.data.models.RankedPlayer. Reflective serialization of Kotlin classes without using kotlin-reflect has undefined and unexpected behavior. Please use KotlinJsonAdapter from the moshi-kotlin artifact or use code gen from the moshi-kotlin-codegen artifact.
    at com.squareup.moshi.ClassJsonAdapter$1.create(ClassJsonAdapter.java:83)
    at com.squareup.moshi.Moshi.nextAdapter(Moshi.java:169)
    at com.squareup.moshi.AdapterMethodsFactory$AdapterMethod.bind(AdapterMethodsFactory.java:312)
    at com.squareup.moshi.AdapterMethodsFactory.create(AdapterMethodsFactory.java:62)
    at com.squareup.moshi.Moshi.adapter(Moshi.java:138)
    ... 23 more

我看到了this other Stack Overflow answer，但是它不适用于我，因为我已经在课程中添加了相关的@JsonClass(generateAdapter = X)行。

我为AbsPlayerConverter class类使用了自定义AbsPlayer，使用它是为了确定要解析的子类。然后，如果解析为RankedPlayer，我将为此使用另一个自定义转换器（RankedPlayerConverter）。

这里是my Moshi-builder code：

Moshi.Builder()
        .add(AbsPlayerConverter)
        .add(AbsRegionConverter)
        .add(AbsTournamentConverter)
        .add(MatchConverter)
        .add(RankedPlayerConverter)
        .add(SimpleDateConverter)
        .build()

这是my gradle file中的Moshi：

implementation "com.squareup.moshi:moshi:1.9.1"
kapt "com.squareup.moshi:moshi-kotlin-codegen:1.9.1"

因此，最后，在所有这些文本和信息之后，我不知道如何才能遇到此崩溃。我清楚地定义了如何对我的RankedPlayer类进行序列化/反序列化。而且，如果我降级到Moshi 1.8.0，并完全保持我的代码库原样，此崩溃将消失，并且一切都将正常进行。

有人有什么想法吗？

谢谢！

Answer 1

错误消息特别指出Please use KotlinJsonAdapter from the moshi-kotlin artifact or use code gen from the moshi-kotlin-codegen artifact

根据Kotlin part of the readme，如果不使用Moshi的代码源，则必须添加KotlinJsonAdapterFactory。根据{{3}}，这是Moshi 1.9中的特定行为更改。

Moshi.Builder()
    .add(AbsPlayerConverter)
    .add(AbsRegionConverter)
    .add(AbsTournamentConverter)
    .add(MatchConverter)
    .add(RankedPlayerConverter)
    .add(SimpleDateConverter)
    .add(KotlinJsonAdapterFactory())
    .build()

并确保您使用的是implementation("com.squareup.moshi:moshi-kotlin:1.9.1")

Answer 2

我正在使用改造，我必须执行以下操作：

在 build.grade 中：

implementation "com.squareup.moshi:moshi-kotlin:$moshiVersion"

在我的存储库中：

val moshi = Moshi.Builder()
    .add(KotlinJsonAdapterFactory())
    .build()

val retrofit = Retrofit.Builder()
    .baseUrl(WEB_SERVICE_URL)
    .addConverterFactory(MoshiConverterFactory.create(moshi))
    .build()

Moshi 1.9.x无法序列化Kotlin类型

2 个答案: