使用ShellExecute C打开长URL
[英]Open long url using ShellExecute c++
问题描述
I'm trying to open an url using ShellExecute() . 
我正在尝试使用ShellExecute()打开一个URL。 The url is generated by my program for a long http get request, and ShellExecute() doesn't work and shows no responds. 该网址是由我的程序针对较长的http get请求生成的，而ShellExecute()无法正常工作，并且没有响应。
ShellExecute(NULL, _T("open"), url, NULL, NULL, SW_SHOWNORMAL); // Does nothing when url is too long
Than I wrote a batch file for the same command, and when the url length is greater than 259 characters it shows this error: 比我为同一命令编写了一个批处理文件，当URL长度大于259个字符时，它显示此错误：
start "" "{mywebsite}/&&&&..." // Repeating &
Windows cannot find
'{my-url}/{long-get-request} ....
Make sure you typed the name correctly, and then try again.
Any idea for extending the character limit for ShellExecute() ? 任何扩展ShellExecute()的字符限制的想法吗？ Or maybe a cool solution to open a long url besides ShellExecute() or system() or System::Diagnostics::Process::Start() , they all fail to work. 也许是一个很棒的解决方案，除了ShellExecute()或system()或System::Diagnostics::Process::Start()之外，还可以打开一个长URL，它们都无法正常工作。
2 个解决方案
解决方案1
0 2017-10-10 12:17:24
I guess I have a solution, but it's probably not the best solution. 我想我有一个解决方案，但这可能不是最佳解决方案。 Basically, I create an html file that redirects to my long url. 基本上，我创建了一个html文件，该文件重定向到我的长URL。
private: Void showPage(const string& httpGetString) {
string url = "{my-website}?" + httpGetString;
remove("jumper.html");
string htmlJumper = "<html><meta http-equiv=\"refresh\" content=\"0; url=" + url + "\"</html>";
fstream jumperFile;
jumperFile.open("jumper.html", ios::out);
jumperFile << htmlJumper;
jumperFile.close();
ShellExecute(NULL, _T("open"), L"jumper.html", NULL, NULL, SW_SHOWNORMAL);
}
解决方案2
0 已采纳 2017-10-11 01:24:02
The suggestion for copying the link in to *.html file will work, however ShellExecute will run the program associated with *.html not http: . 将链接复制到* .html文件的建议将起作用，但是ShellExecute将运行与*.html关联的程序，而不是http: *.html In theory those associations can be different. 从理论上讲，这些关联可以不同。 If you don't care, then just find the association with *.html and use CreateProcess as follows: 如果您不在乎，则只需查找与*.html的关联，并按如下所示使用CreateProcess ：
std::wstring url = L"http://localhost/fake.php?123";
wchar_t buf[MAX_PATH] = { 0 };
DWORD size = _countof(buf);
AssocQueryString(0, ASSOCSTR_EXECUTABLE, L".html", 0, &buf[0], &size);
std::wstring cmd(buf);
cmd += L" ";
cmd += url;
PROCESS_INFORMATION pi;
STARTUPINFO si{ sizeof(si) };
CreateProcess(0, &cmd[0], 0, 0, FALSE, NORMAL_PRIORITY_CLASS, 0, 0, &si, &pi);
...
In Windows 10 ShellExecute accepts large argument lines. 在Windows 10中， ShellExecute接受较大的参数行。
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