GetLastError在调用WinHttpSendRequest后返回6

Question

我在网上搜索了很长时间。但没用。请帮助或尝试给出一些想法如何实现这一点。

提前谢了。

我有以下代码：

void QtGuiApplication::getBtnClick() {
    DWORD dwSize = 0;
    DWORD dwDownloaded = 0;
    LPSTR pszOutBuffer;
    BOOL  bResults = FALSE;
    HINTERNET  hSession = NULL,
        hConnect = NULL,
        hRequest = NULL;

    // Use WinHttpOpen to obtain a session handle.
    hSession = WinHttpOpen(L"WinHTTP Example/1.0",
        WINHTTP_ACCESS_TYPE_DEFAULT_PROXY,
        WINHTTP_NO_PROXY_NAME,
        WINHTTP_NO_PROXY_BYPASS, 0);

    // Specify an HTTP server.
    if (hSession) {

        hConnect = WinHttpConnect(hSession, L"127.0.0.1",
            INTERNET_DEFAULT_HTTP_PORT, 0);
    }
    else {
        qDebug("Error has WinHttpOpen");
        QString errorStr = QString::number(GetLastError());
        qDebug(qPrintable(errorStr));
    }



    // Create an HTTP request handle.
    if (hConnect) {
        hRequest = WinHttpOpenRequest(hConnect, L"GET", NULL,
            NULL, WINHTTP_NO_REFERER,
            WINHTTP_DEFAULT_ACCEPT_TYPES,
            WINHTTP_FLAG_SECURE);
    }
    else {
        qDebug("Error has WinHttpConnect");
        QString errorStr = QString::number(GetLastError());
        qDebug(qPrintable(errorStr));
    }


    // Send a request.
    if (hRequest) {
        bResults = WinHttpSendRequest(hRequest,
            WINHTTP_NO_ADDITIONAL_HEADERS,
            0, WINHTTP_NO_REQUEST_DATA, 0,
            0, 0);
    }
    else {
        qDebug("Error has WinHttpOpenRequest");
        QString errorStr = QString::number(GetLastError());
        qDebug(qPrintable(errorStr));
    }


    // End the request.
    if (bResults) {
        bResults = WinHttpReceiveResponse(hRequest, NULL);
    }
    else {
        qDebug("Error has WinHttpSendRequest");
        QString errorStr = QString::number(GetLastError());
        qDebug(qPrintable(errorStr));
    }


    // Keep checking for data until there is nothing left.
    if (bResults)
        do
        {
            // Check for available data.
            dwSize = 0;
            if (!WinHttpQueryDataAvailable(hRequest, &dwSize))
                printf("Error %u in WinHttpQueryDataAvailable.\n", GetLastError());

            // Allocate space for the buffer.
            pszOutBuffer = new char[dwSize + 1];
            if (!pszOutBuffer)
            {
                printf("Out of memory\n");
                dwSize = 0;
            }
            else
            {
                // Read the Data.
                ZeroMemory(pszOutBuffer, dwSize + 1);

                if (!WinHttpReadData(hRequest, (LPVOID)pszOutBuffer,
                    dwSize, &dwDownloaded))
                    printf("Error %u in WinHttpReadData.\n", GetLastError());
                else
                    qDebug(pszOutBuffer);

                // Free the memory allocated to the buffer.
                delete[] pszOutBuffer;
            }

        } while (dwSize > 0);


        // Report any errors.
        if (!bResults) {
            qDebug("Error has occurred");
            QString str = QString::number(GetLastError());
            qDebug(qPrintable(str));
        }


        // Close any open handles.
        if (hRequest) WinHttpCloseHandle(hRequest);
        if (hConnect) WinHttpCloseHandle(hConnect);
        if (hSession) WinHttpCloseHandle(hSession);
}

bResults = WinHttpSendRequest(hRequest,
            WINHTTP_NO_ADDITIONAL_HEADERS,
            0, WINHTTP_NO_REQUEST_DATA, 0,
            0, 0);

@Controller
public class MyController {
    @ResponseBody
    @RequestMapping("")
    public String home() {
        return "Home";
    }
}

使用winhttp API访问服务，获取springboot错误信息

我试了很多办法，还是没用。

例如，将springboot端口和winhttp API请求端口修改为8089。

Answer 1

从WinHttpConnect

INTERNET_DEFAULT_HTTP_PORT

使用HTTP服务器的默认端口（端口80）。