用WinInet远程下载文件的示例代码

作者: admin 分类: net work 发布时间: 2015-01-29 09:08 ė1,807 浏览数 6没有评论

#include<windows.h>   
#include<wininet.h>   
#include<iostream> 
#include <tchar.h>
using namespace std;
 
#pragma comment(lib,"wininet.lib")   
void main()   
{   
    DWORD byteread=0;   
    char buffer[100];   
    memset(buffer,0,100);   
    HINTERNET internetopen;   
 
    internetopen = InternetOpen(/*_T("DownLoadFile")*/NULL,INTERNET_OPEN_TYPE_DIRECT,NULL,NULL,0);   
    if (internetopen==NULL)   
    {    
        cout<<"Internet open failed!"<<endl;   
        return;   
    }   
 
    HINTERNET    internetopenurl;   
    internetopenurl = InternetOpenUrl(internetopen,_T("http://topic.csdn.net/u/20090429/10/6a38f59f-b776-4140-a11b-f59c4a979931.html"),
        NULL,0,INTERNET_FLAG_TRANSFER_BINARY|INTERNET_FLAG_PRAGMA_NOCACHE,0);      //下载的URL
    if (internetopenurl==NULL)   
    {    
        cout<<"Internet open url failed! error code = "<<GetLastError()<<endl;    
        goto there;   
    }   
 
    BOOL hwrite;   
    DWORD written;   
    HANDLE createfile;   
    createfile = CreateFile(_T("c://downloaded.html"),GENERIC_WRITE,0,0,CREATE_ALWAYS,FILE_ATTRIBUTE_NORMAL,0);  //保存文件 
    if (createfile==INVALID_HANDLE_VALUE)   
    {     
        cout<<"Create File failed!"<<endl;   
        goto next;   
    }   
    BOOL internetreadfile;   
    while(1)   
    {   
        internetreadfile=InternetReadFile(internetopenurl,buffer,sizeof(buffer),&byteread);   
        if(byteread==0)     
            break;   
        hwrite=WriteFile(createfile,buffer,sizeof(buffer),&written,NULL);   
        if (hwrite==0)   
        {   
            cout<<"Write to file failed!"<<endl;   
            goto here;   
        }   
    }   
    cout<<"Finished downloading!"<<endl;   
here:   
    CloseHandle(createfile);   
next:    
    InternetCloseHandle(internetopenurl);   
there:   
    InternetCloseHandle(internetopen);   
}

#include<windows.h>

#include<wininet.h>

#include<iostream>

#include <tchar.h>

using namespace std;

#pragma comment(lib,"wininet.lib")

void main()

{

DWORD byteread=0;

char buffer[100];

memset(buffer,0,100);

HINTERNET internetopen;

internetopen = InternetOpen(/*_T("DownLoadFile")*/NULL,INTERNET_OPEN_TYPE_DIRECT,NULL,NULL,0);

if (internetopen==NULL)

{

cout<<"Internet open failed!"<<endl;

return;

}

HINTERNET internetopenurl;

internetopenurl = InternetOpenUrl(internetopen,_T("http://topic.csdn.net/u/20090429/10/6a38f59f-b776-4140-a11b-f59c4a979931.html"),

NULL,0,INTERNET_FLAG_TRANSFER_BINARY|INTERNET_FLAG_PRAGMA_NOCACHE,0); //下载的URL

if (internetopenurl==NULL)

{

cout<<"Internet open url failed! error code = "<<GetLastError()<<endl;

goto there;

}

BOOL hwrite;

DWORD written;

HANDLE createfile;

createfile = CreateFile(_T("c://downloaded.html"),GENERIC_WRITE,0,0,CREATE_ALWAYS,FILE_ATTRIBUTE_NORMAL,0); //保存文件

if (createfile==INVALID_HANDLE_VALUE)

{

cout<<"Create File failed!"<<endl;

goto next;

}

BOOL internetreadfile;

while(1)

{

internetreadfile=InternetReadFile(internetopenurl,buffer,sizeof(buffer),&byteread);

if(byteread==0)

break;

hwrite=WriteFile(createfile,buffer,sizeof(buffer),&written,NULL);

if (hwrite==0)

{

cout<<"Write to file failed!"<<endl;

goto here;

}

cout<<"Finished downloading!"<<endl;

here:

CloseHandle(createfile);

InternetCloseHandle(internetopenurl);

there:

InternetCloseHandle(internetopen);

}

只回答业务咨询

学习日记，兼职软件设计，软件修改，毕业设计。

本文出自学习日记，转载时请注明出处及相应链接。

本文永久链接: https://www.softwareace.cn/?p=1133

« c++获取电驴首页推荐示例代码

Qt动态加载ui文件，并自定义控件 »

用WinInet远程下载文件的示例代码

发表评论取消回复

分类目录

业务咨询站长

用WinInet远程下载文件的示例代码

发表评论 取消回复

分类目录

业务咨询站长

发表评论取消回复