UE4中调用GetAssetTools()出现LNK2019链接错误求助

我创建了一个继承自AssetActionUtility的C++类，并编写了如下ClipAnimCpp函数：

#include "ClipAnimUtility.h"

#include "EditorUtilityLibrary.h"
#include "IAssetTools.h"
#include "ClipAnimAsset.h"
#include "Kismet/KismetStringLibrary.h"

void UClipAnimUtility::ClipAnimCpp(FString path)
{
    AnimSource = UEditorUtilityLibrary::GetSelectedAssets()[0];
    PackagePath = UEditorUtilityLibrary::GetSelectedAssetData()[0].PackagePath.ToString();

    RowData = UClipAnimAsset::ReadFileArray(path);
    for (auto dataString : RowData)
    {
        FString startFrame{}, endFrame{}, clipName{}, subString{};

        dataString.Split("|", &startFrame, &subString);
        subString.Split("|", &endFrame, &clipName);

        SingleClip.StartFrame = UKismetStringLibrary::Conv_StringToInt(startFrame);
        SingleClip.EndFrame = UKismetStringLibrary::Conv_StringToInt(endFrame);
        SingleClip.ClipName = clipName;

        UAnimSequence* animSeq = Cast<UAnimSequence>(
            UAssetToolsHelpers::GetAssetTools()->DuplicateAsset(SingleClip.ClipName, PackagePath, AnimSource)
            );

        UClipAnimAsset::ClipAnimAsset(animSeq, SingleClip.StartFrame, SingleClip.EndFrame);
    }
}

同时在MyGame.Build.cs中添加了以下依赖模块：

PublicDependencyModuleNames.AddRange(new string[] { "Core", "CoreUObject", "Engine", "InputCore", "AssetTools", "AssetRegistry" });

但仍出现LNK2019链接错误：

ClipAnimUtility.cpp.obj : error LNK2019: unresolved external symbol "public: static class TScriptInterface<class IAssetTools> __cdecl UAssetToolsHelpers::GetAssetTools(void)" (?GetAssetTools@UAssetToolsHelpers@@SA?AV?$TScriptInterface@VIAssetTools@@@@XZ) referenced in function "public: void __cdecl UClipAnimUtility::ClipAnimCpp(class FString)" (?ClipAnimCpp@UClipAnimUtility@@QEAAXVFString@@@Z)

根据文档，UAssetToolsHelpers::GetAssetTools()属于AssetTools模块，我已添加该依赖却仍无法链接相关二进制文件，请问我哪里操作有误？

这个链接错误的核心原因是**AssetTools属于编辑器专用模块，仅在编辑器环境下可用**，你的项目配置存在两个关键问题：

• 模块未标记为编辑器专属
  你的类继承自AssetActionUtility，这是仅在编辑器中运行的类，因此需要在MyGame.Build.cs中明确标记模块为编辑器模块：

  bIsEditorOnly = true;
  

• 依赖模块的添加位置错误
  AssetTools是编辑器模块，不应放在PublicDependencyModuleNames中，而是要放在PrivateEditorDependencyModuleNames里（避免暴露编辑器依赖给游戏运行时）。修改后的依赖配置如下：

  PublicDependencyModuleNames.AddRange(new string[] { "Core", "CoreUObject", "Engine", "InputCore" });
  PrivateEditorDependencyModuleNames.AddRange(new string[] { "AssetTools", "AssetRegistry", "EditorUtilityLibrary" });
  bIsEditorOnly = true;
  

• 额外检查项

  1. 确保你的UClipAnimUtility头文件中，类的UFUNCTION标记为CallInEditor：

     #include "CoreMinimal.h"
     #include "AssetActionUtility.h"
     #include "ClipAnimUtility.generated.h"
     
     UCLASS()
     class MYGAME_API UClipAnimUtility : public UAssetActionUtility
     {
         GENERATED_BODY()
     
     public:
         UFUNCTION(CallInEditor)
         void ClipAnimCpp(FString path);
     };
     

  2. 清理项目的Binaries、Intermediate文件夹，重新生成解决方案并编译，清除旧编译缓存的影响。

内容的提问来源于stack exchange，提问作者Liyuu_