我正在开发一个 KMM 项目，并且身份验证在 Android 应用程序上运行良好。但是，当我在 httpclient（位于 shared.commonMain 中）中添加Auth功能时，ios 应用程序在运行时失败并显示以下消息
函数没有或继承 @Throws 注释，因此异常不会作为 NSError 从 Kotlin 传播到 Objective-C/Swift。相反，它被认为是意外和未处理的。程序将终止。
这就是我创建httpclient的方式
private val httpclient = HttpClient() {
engine {
pipelining = true
threadsCount = 4
}
install(Logging) {
level = LogLevel.HEADERS
logger = object : Logger {
override fun log(message: String) {
Napier.v(tag = "HTTP Client", message = message)
}
}
}
install(JsonFeature) {
val json = Json { ignoreUnknownKeys = true }
serializer = KotlinxSerializer(json)
}
install(Auth) {
basic {
credentials {
BasicAuthCredentials(username = emailUser, password = passwordUser)
}
}
}
}.also {
initLogger()
}
这是 Greeting 类的完整代码：
class Greeting {
private var emailUser: String = ""
private var passwordUser: String = ""
private val httpclient = HttpClient() {
engine {
pipelining = true
threadsCount = 4
}
install(Logging) {
level = LogLevel.HEADERS
logger = object : Logger {
override fun log(message: String) {
Napier.v(tag = "HTTP Client", message = message)
}
}
}
install(JsonFeature) {
val json = Json { ignoreUnknownKeys = true }
serializer = KotlinxSerializer(json)
}
install(Auth) {
basic {
credentials {
BasicAuthCredentials(username = emailUser, password = passwordUser)
}
}
}
}.also {
initLogger()
}
@Throws(Exception::class)
suspend fun getVaccines(): List<Vaccine> {
return httpclient.get(endpointBase + Vaccine.path)
}
@Throws(Exception::class)
suspend fun loginUser(email: String, password: String): String? {
emailUser = email
passwordUser = password
return httpclient.get(endpointBase + User.path + "/userPage")
}
}
异常完整的堆栈跟踪
Function doesn't have or inherit @Throws annotation and thus exception isn't propagated from Kotlin to Objective-C/Swift as NSError.
It is considered unexpected and unhandled instead. Program will be terminated.
Uncaught Kotlin exception: kotlin.native.concurrent.InvalidMutabilityException: mutation attempt of frozen com.example.vaccinationcertificate_mobileapp.Greeting@3963788
at 0 iosApp 0x000000010c1f728f kfun:kotlin.Throwable#<init>(kotlin.String?){} + 95
at 1 iosApp 0x000000010c1efbbd kfun:kotlin.Exception#<init>(kotlin.String?){} + 93
at 2 iosApp 0x000000010c1efe2d kfun:kotlin.RuntimeException#<init>(kotlin.String?){} + 93
at 3 iosApp 0x000000010c2272fd kfun:kotlin.native.concurrent.InvalidMutabilityException#<init>(kotlin.String){} + 93
at 4 iosApp 0x000000010c228aff ThrowInvalidMutabilityException + 431
at 5 iosApp 0x000000010c3db2c0 MutationCheck + 128
at 6 iosApp 0x000000010c151165 kfun:com.example.vaccinationcertificate_mobileapp.Greeting#<init>(){} + 437
at 7 iosApp 0x000000010c17c9de objc2kotlin.883 + 142
at 8 iosApp 0x000000010c150fa3 $sSo14SharedGreetingCABycfcTO + 19
at 9 iosApp 0x000000010c14f0af $sSo14SharedGreetingCABycfC + 31
at 10 iosApp 0x000000010c150596 $s6iosApp11ContentViewVACycfC + 38 (/Users/oprisvlad2/projects/VaccinationCertificate/VaccinationCertificate-mobileapp/iosApp/iosApp/ContentView.swift:4:0)
at 11 iosApp 0x000000010c14ebf3 $s6iosApp6iOSAppV4bodyQrvgAA11ContentViewVyXEfU_ + 35 (/Users/oprisvlad2/projects/VaccinationCertificate/VaccinationCertificate-mobileapp/iosApp/iosApp/iOSApp.swift:7:4)
at 12 iosApp 0x000000010c14eda0 $s6iosApp11ContentViewVIgo_ACIegr_TR + 16
at 13 iosApp 0x000000010c14edd1 $s6iosApp11ContentViewVIgo_ACIegr_TRTA + 17
at 14 SwiftUI 0x00000001173612cf $s7SwiftUI11WindowGroupV7contentACyxGxyXE_tcfC + 63
at 15 iosApp 0x000000010c14eac5 $s6iosApp6iOSAppV4bodyQrvg + 181 (/Users/oprisvlad2/projects/VaccinationCertificate/VaccinationCertificate-mobileapp/iosApp/iosApp/iOSApp.swift:6:3)
at 16 iosApp 0x000000010c14ef79 $s6iosApp6iOSAppV7SwiftUI0B0AadEP4body4BodyQzvgTW + 9
at 17 SwiftUI 0x0000000116dce845 $s7SwiftUI15AppBodyAccessor33_A363922CEBDF47986D9772B903C8737ALLV06updateD02of7changedyx_SbtF0D0QzyXEfU_TA + 22
at 18 SwiftUI 0x0000000117357449 $s7SwiftUI12BodyAccessorPAAE03setC0yy0C0QzyXEFAFyXEfU_ + 34
at 19 SwiftUI 0x0000000116dce174 $s7SwiftUI15AppBodyAccessor33_A363922CEBDF47986D9772B903C8737ALLV06updateD02of7changedyx_SbtF + 1310
at 20 SwiftUI 0x00000001173575ac $s7SwiftUI10StaticBody33_49D2A32E637CD497C6DE29B8E060A506LLV11updateValueyyF + 161
at 21 SwiftUI 0x000000011754055c $s14AttributeGraph0A0VyACyxGqd__c5ValueQyd__RszAA12StatefulRuleRd__lufcADSPyqd__GXEfU_ySv_So11AGAttributeatcyXEfU_ySv_AJtcqd__mcfu_ySv_AJtcfu0_TA + 26
at 22 AttributeGraph 0x0000000110585e9b _ZN2AG5Graph11UpdateStack6updateEv + 553
at 23 AttributeGraph 0x0000000110586491 _ZN2AG5Graph16update_attributeENS_4data3ptrINS_4NodeEEEj + 411
at 24 AttributeGraph 0x000000011058c491 _ZN2AG5Graph20input_value_ref_slowENS_4data3ptrINS_4NodeEEENS_11AttributeIDEjPK15AGSwiftMetadataRhl + 299
at 25 AttributeGraph 0x00000001105a2889 AGGraphGetValue + 210
at 26 SwiftUI 0x00000001173574d5 $s7SwiftUI10StaticBody33_49D2A32E637CD497C6DE29B8E060A506LLV9container9ContainerQzvg + 67
at 27 SwiftUI 0x0000000117357599 $s7SwiftUI10StaticBody33_49D2A32E637CD497C6DE29B8E060A506LLV11updateValueyyF + 142
at 28 SwiftUI 0x000000011754055c $s14AttributeGraph0A0VyACyxGqd__c5ValueQyd__RszAA12StatefulRuleRd__lufcADSPyqd__GXEfU_ySv_So11AGAttributeatcyXEfU_ySv_AJtcqd__mcfu_ySv_AJtcfu0_TA + 26
at 29 AttributeGraph 0x0000000110585e9b _ZN2AG5Graph11UpdateStack6updateEv + 553
确切的解决方案：
- 移动
emailUser和passwordUser共同的Main.Platform
expect var emailUser: String expect var passwordUser: String
- androidMain.Platform
actual var emailUser = "" actual var passwordUser = ""
- iosMain.Platform
actual var emailUser: String = AtomicReference("").value actual var passwordUser: String = AtomicReference("").value