UE4-【C++】【UE4接入CISQLite3】

末蓝、 2023-06-11 06:23 55阅读 0赞

1.下载插件[CISQLite3][]

2.创建UE4工程，添加Plugins目录和CISQLite3，将1下载到的插件放入Plugins/CISQLite3

3.工程添加uplugin

.uproject添加
    "Plugins": [
        {
            "Name": "CISQLite3",
            "Enabled": true
        }
    ]
    
    UE工程目录.Build.cs 添加模块
    PublicDependencyModuleNames.AddRange(new string[] { "Core", "CoreUObject", "Engine", "InputCore", "CISQLite3" });
    
    插件目录.Build.cs
    public class CISQLite3 : ModuleRules
    {
      public CISQLite3(ReadOnlyTargetRules Target) : base(Target)
      {
            bEnableUndefinedIdentifierWarnings = false;
    
            PublicIncludePaths.AddRange(
          new string[] {
            "CISQLite3/Public"
          }
        );
    
        PrivateIncludePaths.AddRange(
          new string[] {
            "CISQLite3/Private"
          }
        );
    
        PublicDependencyModuleNames.AddRange(
          new string[] {
            "Engine",
            "Core",
            "CoreUObject"
          }
        );
    
        PrivateDependencyModuleNames.AddRange(
          new string[] {}
        );
    
        DynamicallyLoadedModuleNames.AddRange(
          new string[] {}
        );
      }
    }

4.删除工程目录的Binaries和插件Binaries

5.选中.uproject，生成VS解决方案

6.编译

报错：

1.Error:There may be an operating system error or the module may not be properly set up

解决办法：将插件添加到.uproject里即可解决

2.C4668警告错误

解决办法：[https://blog.csdn.net/yuxikuo\_1/article/details/102799307][https_blog.csdn.net_yuxikuo_1_article_details_102799307]

7.使用

由于自己没有创建数据库，所以可以从其他demo里下载数据库文件.db

CustomCharacter.h 添加
    	UFUNCTION(BlueprintCallable, Category = "My Actor")
    	bool GetMyStats();
    
    	UPROPERTY(EditAnywhere, BlueprintReadWrite, Category = "My Actor")
    	FString Name;
    
    	UPROPERTY(EditAnywhere, BlueprintReadWrite, Category = "My Actor")
    	int32 Age;
    
    	UPROPERTY(EditAnywhere, BlueprintReadWrite, Category = "My Actor")
    	FString Gender;
    
    	UPROPERTY(EditAnywhere, BlueprintReadWrite, Category = "My Actor")
    	float Height;
    
    CustomCharacter.cpp 添加
    #include "SQLiteDatabase.h"
    
    bool AMyCharacter::GetMyStats()
    {
    	FString dbName = TEXT("TestDatabase");
    	FString actorName = TEXT("Bruce Willis");
    
    	if (!USQLiteDatabase::IsDatabaseRegistered(dbName))
    	{
    		USQLiteDatabase::RegisterDatabase(dbName, "Databases/TestDatabase.db", true);
    	}
    
    	bool didPopulate = USQLiteDatabase::GetDataIntoObject(dbName, FString::Printf(TEXT("SELECT Name, Age, Gender, Height FROM Actors WHERE Name = \"%s\""), *actorName), this);
    
    	return didPopulate;
    }
    
    void AMyCharacter::BeginPlay()
    {
    	Super::BeginPlay();
    	bool is_ok = GetMyStats();
    	if (is_ok)
    	{
    		UE_LOG(LogTemp, Log, TEXT("Name = %s"),*Name);
    		UE_LOG(LogTemp, Log, TEXT("Age = %d"), Age);
    		UE_LOG(LogTemp, Log, TEXT("Gender = %s"), *Gender);
    		UE_LOG(LogTemp, Log, TEXT("Height = %f"), Height);
    	}
    }

![20191029153439546.png][]

[CISQLite3]: https://github.com/cindustries/unreal-sqlite3.git
[https_blog.csdn.net_yuxikuo_1_article_details_102799307]: https://blog.csdn.net/yuxikuo_1/article/details/102799307
[20191029153439546.png]: /images/20230531/bd9ec441aeff48858162cfc6021be138.png