UE4 讀寫 Excel

UE4中讀寫Excel需要導出為CSV文件，並且UE4自身提供的一種讀寫文件的組件：UDataTable。

<先記錄后完善>

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1、首先需要創建一張Excel表，並導出為*.csv格式。注意在創建表時第一格不要鍵入描述，類似：

 

 

 

2、在工程代碼中創建一個struct，但要繼承自：FTableRowBase：

struct FHxUserInfoTable : public FTableRowBase
{
    GENERATED_USTRUCT_BODY()

public:

    FHxUserInfoTable()
    {}

　　　　UPROPERTY(EditAnywhere, BlueprintReadWrite, Category = HxUserInfo)
　　　　FString Level;

　　　UPROPERTY(EditAnywhere, BlueprintReadWrite, Category = HxUserInfo)
　　　int32 LvStar;

　　　UPROPERTY(EditAnywhere, BlueprintReadWrite, Category = HxUserInfo)
　　　int32 TotalStar;

　　　UPROPERTY(EditAnywhere, BlueprintReadWrite, Category = HxUserInfo)
　　　int32 Score;

　　　UPROPERTY(EditAnywhere, BlueprintReadWrite, Category = HxUserInfo)
　　　float Time;

};

TODO：該結構體中的變量名字必須與Excel表中的表頭名字一致，以便在藍圖中在Import csv時相互關聯。

3、

4、

/*
    FString GoID = TEXT("1338888888");
    static const FString ContextString(TEXT("GENERAL"));
    static const FString FileName(TEXT("F:\\UE4\\Project_422\\VRDesk2.0_Ctrl\\VRDeskII\\Content\\HxUserInfoData.csv"));
    FHxUserInfoTable* UserTable = HxUserTable->FindRow<FHxUserInfoTable>(*GoID, ContextString);

    //
    GoID = TEXT("1883333333");
    FHxUserInfoTable TemTable;
    TemTable.Level = TEXT("3-2");
    TemTable.LvStar = 3;
    TemTable.TotalStar = 20;
    TemTable.Score = 100;
    TemTable.Time = 12.f;

    HxUserTable->AddRow(*GoID, TemTable);

    for (const auto& Value : HxUserTable->GetRowMap())
    {
        FName Title = Value.Key;
        UserTable = HxUserTable->FindRow<FHxUserInfoTable>(Title, ContextString);
        if (UserTable)
        {
            FString Tem = FString::Printf(TEXT("%s, %s, %d, %d, %d, %f"), *Title, *UserTable->Level, UserTable->LvStar, UserTable->TotalStar, UserTable->Score, UserTable->Time);
            GEngine->AddOnScreenDebugMessage(
                GEngine->ScreenMessages.Num() + 1,
                6.0f,
                FColor::Green, Tem
            );
        }
    }

    // exprot data to csv
    FFileHelper::SaveStringToFile(HxUserTable->GetTableAsCSV(EDataTableExportFlags::UsePrettyPropertyNames | EDataTableExportFlags::UsePrettyEnumNames), *FileName);
    */