arrays - Kotlin中带有ByteArray的数据类

Question

我在Kotlin中创建了一个Data类，其中包含一个图像作为ByteArray。
构建时出现以下错误:

Error:Kotlin: [Internal Error] java.lang.IllegalStateException: Backend Internal error: Exception during code generation
Cause: An operation is not implemented: primitive arrays are not supported yet
File being compiled at position: file:///my/home/Project/my-generator/src/main/kotlin/com/myapp/domain/Alert.kt
The root cause was thrown at: JVMCodegenUtil.kt:364
    at org.jetbrains.kotlin.codegen.CompilationErrorHandler.lambda$static$0(CompilationErrorHandler.java:24)
    at org.jetbrains.kotlin.codegen.PackageCodegenImpl.generate(PackageCodegenImpl.java:76)
    at org.jetbrains.kotlin.codegen.DefaultCodegenFactory.generatePackage(CodegenFactory.kt:96)
    at org.jetbrains.kotlin.codegen.DefaultCodegenFactory.generateModule(CodegenFactory.kt:67)
    at org.jetbrains.kotlin.codegen.KotlinCodegenFacade.doGenerateFiles(KotlinCodegenFacade.java:47)
    at org.jetbrains.kotlin.codegen.KotlinCodegenFacade.compileCorrectFiles(KotlinCodegenFacade.java:39)
    at org.jetbrains.kotlin.cli.jvm.compiler.KotlinToJVMBytecodeCompiler.generate(KotlinToJVMBytecodeCompiler.kt:476)
    at org.jetbrains.kotlin.cli.jvm.compiler.KotlinToJVMBytecodeCompiler.compileModules$cli(KotlinToJVMBytecodeCompiler.kt:164)
    at org.jetbrains.kotlin.cli.jvm.K2JVMCompiler.doExecute(K2JVMCompiler.kt:166)
    at org.jetbrains.kotlin.cli.jvm.K2JVMCompiler.doExecute(K2JVMCompiler.kt:56)
    at org.jetbrains.kotlin.cli.common.CLICompiler.execImpl(CLICompiler.kt:84)
    at org.jetbrains.kotlin.cli.common.CLICompiler.execImpl(CLICompiler.kt:42)
    at org.jetbrains.kotlin.cli.common.CLITool.exec(CLITool.kt:104)
    at org.jetbrains.kotlin.daemon.CompileServiceImpl$compile$$inlined$ifAlive$lambda$1.invoke(CompileServiceImpl.kt:436)
    at org.jetbrains.kotlin.daemon.CompileServiceImpl$compile$$inlined$ifAlive$lambda$1.invoke(CompileServiceImpl.kt:102)
    at org.jetbrains.kotlin.daemon.CompileServiceImpl$doCompile$$inlined$ifAlive$lambda$2.invoke(CompileServiceImpl.kt:1005)
    at org.jetbrains.kotlin.daemon.CompileServiceImpl$doCompile$$inlined$ifAlive$lambda$2.invoke(CompileServiceImpl.kt:102)
    at org.jetbrains.kotlin.daemon.common.DummyProfiler.withMeasure(PerfUtils.kt:138)
    at org.jetbrains.kotlin.daemon.CompileServiceImpl.checkedCompile(CompileServiceImpl.kt:1047)
    at org.jetbrains.kotlin.daemon.CompileServiceImpl.doCompile(CompileServiceImpl.kt:1004)
    at org.jetbrains.kotlin.daemon.CompileServiceImpl.compile(CompileServiceImpl.kt:434)
    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 sun.rmi.server.UnicastServerRef.dispatch(UnicastServerRef.java:357)
    at sun.rmi.transport.Transport$1.run(Transport.java:200)
    at sun.rmi.transport.Transport$1.run(Transport.java:197)
    at java.security.AccessController.doPrivileged(Native Method)
    at sun.rmi.transport.Transport.serviceCall(Transport.java:196)
    at sun.rmi.transport.tcp.TCPTransport.handleMessages(TCPTransport.java:573)
    at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run0(TCPTransport.java:834)
    at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.lambda$run$0(TCPTransport.java:688)
    at java.security.AccessController.doPrivileged(Native Method)
    at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run(TCPTransport.java:687)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
    at java.lang.Thread.run(Thread.java:748)
Caused by: kotlin.NotImplementedError: An operation is not implemented: primitive arrays are not supported yet
    at org.jetbrains.kotlinx.serialization.compiler.backend.jvm.JVMCodegenUtilKt.getSerialTypeInfo(JVMCodegenUtil.kt:364)
    at org.jetbrains.kotlinx.serialization.compiler.backend.jvm.SerializerCodegenImpl$generateLoad$1.invoke(SerializerCodegenImpl.kt:365)
    at org.jetbrains.kotlinx.serialization.compiler.backend.jvm.SerializerCodegenImpl$generateLoad$1.invoke(SerializerCodegenImpl.kt:32)
    at org.jetbrains.kotlinx.serialization.compiler.backend.jvm.JVMCodegenUtilKt$generateMethod$1.doGenerateBody(JVMCodegenUtil.kt:153)
    at org.jetbrains.kotlin.codegen.FunctionGenerationStrategy$CodegenBased.generateBody(FunctionGenerationStrategy.java:84)
    at org.jetbrains.kotlin.codegen.FunctionCodegen.generateMethodBody(FunctionCodegen.java:666)
    at org.jetbrains.kotlin.codegen.FunctionCodegen.generateMethodBody(FunctionCodegen.java:473)
    at org.jetbrains.kotlin.codegen.FunctionCodegen.generateMethod(FunctionCodegen.java:260)
    at org.jetbrains.kotlin.codegen.FunctionCodegen.generateMethod(FunctionCodegen.java:176)
    at org.jetbrains.kotlinx.serialization.compiler.backend.jvm.JVMCodegenUtilKt.generateMethod(JVMCodegenUtil.kt:150)
    at org.jetbrains.kotlinx.serialization.compiler.backend.jvm.SerializerCodegenImpl.generateLoad(SerializerCodegenImpl.kt:287)
    at org.jetbrains.kotlinx.serialization.compiler.backend.common.SerializerCodegen.generateLoadIfNeeded(SerializerCodegen.kt:121)
    at org.jetbrains.kotlinx.serialization.compiler.backend.common.SerializerCodegen.generate(SerializerCodegen.kt:48)
    at org.jetbrains.kotlinx.serialization.compiler.backend.jvm.SerializerCodegenImpl$Companion.generateSerializerExtensions(SerializerCodegenImpl.kt:49)
    at org.jetbrains.kotlinx.serialization.compiler.extensions.SerializationCodegenExtension.generateClassSyntheticParts(SerializationCodegenExtension.kt:30)
    at org.jetbrains.kotlin.codegen.ImplementationBodyCodegen.generateSyntheticPartsAfterBody(ImplementationBodyCodegen.java:438)
    at org.jetbrains.kotlin.codegen.MemberCodegen.generate(MemberCodegen.java:132)
    at org.jetbrains.kotlin.codegen.MemberCodegen.genClassOrObject(MemberCodegen.java:302)
    at org.jetbrains.kotlin.codegen.MemberCodegen.genSyntheticClassOrObject(MemberCodegen.java:316)
    at org.jetbrains.kotlin.codegen.ClassBodyCodegen.generateBody(ClassBodyCodegen.java:111)
    at org.jetbrains.kotlin.codegen.MemberCodegen.generate(MemberCodegen.java:129)
    at org.jetbrains.kotlin.codegen.MemberCodegen.genClassOrObject(MemberCodegen.java:302)
    at org.jetbrains.kotlin.codegen.MemberCodegen.genClassOrObject(MemberCodegen.java:286)
    at org.jetbrains.kotlin.codegen.PackageCodegenImpl.generateClassesAndObjectsInFile(PackageCodegenImpl.java:118)
    at org.jetbrains.kotlin.codegen.PackageCodegenImpl.generateFile(PackageCodegenImpl.java:137)
    at org.jetbrains.kotlin.codegen.PackageCodegenImpl.generate(PackageCodegenImpl.java:68)
    ... 36 more

错误中的主要消息似乎是primitive arrays are not supported yet。如果删除数据类的ByteArray，则表示正在正确编译。

有没有一种方法可以使用ByteArray创建数据类？
还是有一种方法可以将ByteArray转换为Array<Byte>？

谢谢你的帮助

Answer 1

kotlinx.serialization库尚未完成，您遇到了一个突出的问题:https://github.com/Kotlin/kotlinx.serialization/issues/52

简单地说，序列化库的维护者尚未决定处理原始数组的最佳方法，因此它们会在编译期间引起问题，您将需要编写自己的编码器或将其转换为List<Byte>之类的受支持类型(上面链接的问题说这不会发生，因为这会导致性能问题)