ue download image-Go服务器开发

To download an image using Unreal Engine (UE), you can use the IImageWrapper interface provided by UE. Here’s a basic example of how you can download an image using C++ in UE:

#include "IImageWrapper.h"
#include "IImageWrapperModule.h"
#include "HttpModule.h"

void YourFunction()
{
    FString Url = TEXT("https://example.com/image.jpg"); // Replace with your image URL

    TSharedRef<IHttpRequest, ESPMode::ThreadSafe> HttpRequest = FHttpModule::Get().CreateRequest();
    HttpRequest->SetURL(Url);
    HttpRequest->SetVerb(TEXT("GET"));

    HttpRequest->OnProcessRequestComplete().BindLambda([](FHttpRequestPtr Request, FHttpResponsePtr Response, bool bWasSuccessful)
    {
        if (bWasSuccessful && Response.IsValid())
        {
            TArray<uint8> ImageData;
            ImageData.Append((uint8*)Response->GetContent().GetData(), Response->GetContentLength());

            IImageWrapperModule& ImageWrapperModule = FModuleManager::LoadModuleChecked<IImageWrapperModule>(FName("ImageWrapper"));
            TSharedPtr<IImageWrapper> ImageWrapper = ImageWrapperModule.CreateImageWrapper(EImageFormat::JPEG);

            if (ImageWrapper.IsValid() && ImageWrapper->SetCompressed(ImageData.GetData(), ImageData.Num()))
            {
                const TArray<uint8>* RawData = nullptr;
                if (ImageWrapper->GetRaw(ERGBFormat::BGRA, 8, RawData))
                {
                    FString SavePath = TEXT("C:/YourSavePath/image.jpg"); // Replace with your desired save path

                    // Save the image file
                    FFileHelper::SaveArrayToFile(*RawData, *SavePath);
                    
                    UE_LOG(LogTemp, Warning, TEXT("Downloaded image saved at %s"), *SavePath);
                }
            }
        }
    });

    HttpRequest->ProcessRequest();
}

Make sure to replace the placeholder values with your own image URL and save path. This example assumes you’re downloading a JPEG image, but you can modify it to handle other image formats as well.

Keep in mind that this is just a basic example, and you might need to handle error cases, add progress updates, or make the download process asynchronous depending on your requirements.

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