简书链接:记一个net70mvcwebapi本地编译参数声明模型无法解决的问题多次折腾最后弃坑笔记
文章字数：303,阅读全文大约需要1分钟
错误概要
Microsoft.Extensions.Internal.PropertyHelper.CallNullSafePropertyGetter[webapi.aot.model.GenicQueryCall,System.Int32](System.Func2[webapi.aot.model.GenicQueryCall, System.Int32],System.Object)' is missing native code. MethodInfo.MakeGenericMethod() is not compatible with AOT compilation.
详细

1
2
3
4
5
6
7
System.NotSupportedException: 'Microsoft.Extensions.Internal.PropertyHelper.CallNullSafePropertyGetter[webapi.aot.model.GenicQueryCall,System.Int32](System.Func2[webapi.aot.model.GenicQueryCall, System.Int32],System.Object)' is missing native code. MethodInfo.MakeGenericMethod() is not compatible with AOT compilation. Inspect and fix AOT related warnings that were generated when the app was published. For more information see https://aka.ms/nativeaot-compatibility
         at System.Reflection.Runtime.MethodInfos.RuntimeNamedMethodInfo1.GetUncachedMethodInvoker(RuntimeTypeInfo[], MemberInfo) + 0x2f
         at System.Reflection.Runtime.MethodInfos.RuntimeNamedMethodInfo1.MakeGenericMethod(Type[]) + 0x18e
         at Microsoft.Extensions.Internal.PropertyHelper.MakeFastPropertyGetter(Type openGenericDelegateType, MethodInfo propertyGetMethod, MethodInfo openGenericWrapperMethod) + 0xb6
         at Microsoft.AspNetCore.Mvc.ModelBinding.Metadata.DefaultModelMetadataProvider.CreateSinglePropertyDetails(ModelMetadataIdentity propertyKey, PropertyHelper propertyHelper) + 0xec
         at Microsoft.AspNetCore.Mvc.ModelBinding.Metadata.DefaultModelMetadataProvider.CreatePropertyDetails(ModelMetadataIdentity key) + 0xc7
         at Microsoft.AspNetCore.Mvc.ModelBinding.Metadata.DefaultModelMetadataProvider.G

声明的参数如下:

1
2
public string GenericExecCall(GenericCall GenicCall)
    {

试过编写rd.xml

1
2
3
<Assembly Name="webapi">
  <Type Name="webapi.aot.model.KeyValue" Dynamic="Required All" />
</Assembly>

无法解决
也试过源生成

1
2
3
4
5
6
    [JsonSerializable(typeof(GenericParamCall))]
[JsonSerializable(typeof(System.Collections.Generic.Dictionary<GenericParamCall, System.Int32>))]

    [JsonSerializable(typeof(Newtonsoft.Json.Linq.JObject))]
    internal partial class MyJsonContext : JsonSerializerContext
    {

依然无法解决，我的想法是不让她触发CallNullSafePropertyGetter ，也就是给参数设置默认值，结果并没有卵用

Microsoft.Extensions.Internal.PropertyHelper.CallNullSafePropertyGetter所属dll不知道，试过框架 App作为 dll就去过滤Microsoft.Extensions.Internal.PropertyHelper.CallNullSafePropertyGetter[webapi.aot.model.GenericParamCall,System.Int32]
如 

1
2
3
4
<Assembly Name="到底哪个dll???">
  <Type Name="Microsoft.Extensions.Internal.PropertyHelper.CallNullSafePropertyGetter[webapi.aot.model.GenericCall,System.Int32]" Dynamic="Required All" />
  <Type Name="Microsoft.Extensions.Internal.PropertyHelper.CallNullSafePropertyGetter[webapi.aot.model.GenericParamCall,System.Int32]" Dynamic="Required All" />
</Assembly>

问题是不知道属于哪个dll的。

image.png

目前能用的是作为接口返回值是ok的，这个时候是不会报错，唯独 作为参数声明不行。
dotnet/src/aspnetcore/src/Shared/PropertyHelper/PropertyHelper.cs at 89eaa42dd7c95b0a1bf62dbaec4ee08b094108d0 · dotnet/dotnet (github.com)