UE Http下载文件/解压压缩包_ue5 http下载一个文件

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<uint8>&, 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<UAsyncHttpObject>();
	AsyncHttpObject->DownloadRequestStart(url);
 
	FileSavePath = fileSavePath;
	FileSaveName = fileSaveName;
 
	return AsyncHttpObject;
}
 
//开始请求下载
void UAsyncHttpObject::DownloadRequestStart(const FString& url)
{
	TSharedRef<IHttpRequest, ESPMode::ThreadSafe> 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<uint8> 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<uint8> 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