UE Http下载文件/解压压缩包

如果有大佬知道怎么获取下载文件如何获取自身命名麻烦告知一下。谢谢。

下载

 

.h

#pragma once

#include "CoreMinimal.h"
#include "Kismet/BlueprintAsyncActionBase.h"
#include "Interfaces/IHttpRequest.h"
#include "AsyncHttpObject.generated.h"

#pragma region One

DECLARE_DYNAMIC_MULTICAST_DELEGATE_ThreeParams(FDownloadProgressDelegate,
	const int32&, ReceivedDataInBytes,
	const int32&, TotalDataInBytes,
	const TArray&, BinaryData
);
DECLARE_DYNAMIC_MULTICAST_DELEGATE(FDownloadDelegate);

#pragma endregion



/**
 *
 */
UCLASS()
class PIECETOGETHERTOOLS_API UAsyncHttpObject : public UBlueprintAsyncActionBase
{
	GENERATED_BODY()

	UFUNCTION(BlueprintCallable, Category = "Vince | AsyncHttp", meta = (BlueprintInternalUseOnly = "true"))
	static UAsyncHttpObject* AsyncHttpDownload(const FString& url,FString fileSavePath, FString ileSaveName);

	void DownloadRequestStart(const FString& url);
	void DownloadRequestHandle(FHttpRequestPtr request, FHttpResponsePtr response, bool bWasSuccessful);
	void DownloadProgress(FHttpRequestPtr request, int32 bytesSent, int32 bytesReceived);

	//输出节点
	UPROPERTY(BlueprintAssignable, Category = "Vince | AsyncHttp")
	FDownloadProgressDelegate OnProgressUpdate; //最好把有参数的放在前面，不然参数在蓝图节点有时候被吃掉了

	//输出节点
	UPROPERTY(BlueprintAssignable, Category = "Vince | AsyncHttp")
	FDownloadDelegate OnSucc;

	//输出节点
	UPROPERTY(BlueprintAssignable, Category = "Vince | AsyncHttp")
	FDownloadDelegate OnFailed;






};

.cpp


#include "AsyncHttpObject.h"
#include "HttpModule.h"
#include "Interfaces/IHttpResponse.h"




//存储目录
FString FileSavePath =TEXT("");

//存储名字
FString FileSaveName = TEXT("");

UAsyncHttpObject* UAsyncHttpObject::AsyncHttpDownload(const FString& url, FString fileSavePath, FString fileSaveName)
{

	UAsyncHttpObject* AsyncHttpObject = NewObject();
	AsyncHttpObject->DownloadRequestStart(url);

	FileSavePath = fileSavePath;
	FileSaveName = fileSaveName;

	return AsyncHttpObject;
}

//开始请求下载
void UAsyncHttpObject::DownloadRequestStart(const FString& url)
{
	TSharedRef request = FHttpModule::Get().CreateRequest();
	request->SetVerb("GET");
	request->SetURL(url);
	request->OnProcessRequestComplete().BindUObject(this, &UAsyncHttpObject::DownloadRequestHandle); //请求回调
	request->OnRequestProgress().BindUObject(this, &UAsyncHttpObject::DownloadProgress);// 下载进度
	request->ProcessRequest();



	RemoveFromRoot(); // 手动GC
}

请求回调
void UAsyncHttpObject::DownloadRequestHandle(FHttpRequestPtr request, FHttpResponsePtr response, bool bWasSuccessful)
{
	RemoveFromRoot();


	if (bWasSuccessful && response.IsValid() && EHttpResponseCodes::IsOk(response->GetResponseCode()))
	{
		if (response->GetContentLength() > 0) {
			TArray EmptyData;
			OnProgressUpdate.Broadcast(response->GetContentLength(), response->GetContentLength(), EmptyData);
		}

		//FString FileSavePath = FPaths::ProjectDir() + "/download/gameplay.png";

		
	     
		//下载返回类型设置
		FString sType, SLeft, SRight;
		sType = response->GetHeader(TEXT("Content-Type"));
		sType.Split("/",&SLeft,&SRight);
		FileSaveName.Append(FString::Printf(TEXT(".%s"), *SRight)) ;

		//组合 存储地址
		FileSavePath = FPaths::Combine(FileSavePath, FileSaveName);

		FString Path, Filename, Extension;
		FPaths::Split(FileSavePath, Path, Filename, Extension);
	

		 
		IPlatformFile& PlatformFile = FPlatformFileManager::Get().GetPlatformFile();

		if (!PlatformFile.DirectoryExists(*Path))
		{
			if (!PlatformFile.CreateDirectoryTree(*Path))
			{
				UE_LOG(LogTemp, Error, TEXT("Create Directory Failed!"));
				OnFailed.Broadcast();
				return;
			}
		}

		IFileHandle* FileHandle = PlatformFile.OpenWrite(*FileSavePath);
		if (FileHandle)
		{
			FileHandle->Write(response->GetContent().GetData(), response->GetContentLength());
			delete FileHandle;
			OnSucc.Broadcast();
			return;
		}
		else {
			UE_LOG(LogTemp, Error, TEXT("Save File Failed!"));
			OnFailed.Broadcast();
			return;
		}

	}
	UE_LOG(LogTemp, Error, TEXT("download File Failed!"));
	OnFailed.Broadcast();
	return;
}

// 下载进度
void UAsyncHttpObject::DownloadProgress(FHttpRequestPtr request, int32 bytesSent, int32 bytesReceived)
{
	if (request->GetResponse()->GetContentLength() > 0)
	{
		TArray EmptyData;
		OnProgressUpdate.Broadcast(bytesReceived, request->GetResponse()->GetContentLength(), EmptyData);
	}
}

官方免费下载插件

也不知道怎么自动设置名字和后缀,可能有大佬知道怎么"微操".还望分享.这个下载进度的回调是正常的.我自己改的那个下载进度回调有问题.

在代码插件创建的Runtime Files Downloader - 虚幻引擎商城

​​​​​​​

解压zip

官方免费插件

Runtime Archiver

在代码插件创建的Runtime Archiver - 虚幻引擎商城

示例

*注意上面第一个变量必须指定文件.不然会失败

结果