gSoap传输二进制数据

最近使用gSoap传输二进制数据，遇到问题。gSoap不能一次传输二进制数据。所以使用分包传送。

 struct xsd_DwgInfo

 {

     char m_pBuffer[];//分包大小

     int m_nReadSize;//

     bool m_bEof;//此次是否完全读取数据

 };

 int ns_GetDwgBinaryInfo(char* chMineID, int nPosition, struct xsd_DwgInfo& dwgInfo);

服务器端代码：

#include <fstream>

using std::ifstream;

int ns_GetDwgBinaryInfo(struct soap*, char *chMineID, int nPosition, struct xsd_DwgInfo &dwgInfo)

{//分包传送二进制数据

    ifstream file;

    file.open("E:\\123.dwg", std::ios::in | std::ios::binary);

    if(!file.is_open()) return SOAP_ERR;

    file.seekg(nPosition);//起始读取位置

    file.read(dwgInfo.m_pBuffer, );//读取数据长度

    dwgInfo.m_nReadSize = file.gcount();

    dwgInfo.m_bEof = file.eof();//当前是否读取完毕

    file.close();

    return SOAP_OK;

}

客户端代码:

void CCClientWebServiceDemoDlg::OnBnClickedButton4()

{//分包传送

    struct soap getInfoSoap;

    soap_init(&getInfoSoap);

    char* server_addr = "http://127.0.0.1:10000";

    xsd_DwgInfo dwgInfo;

    int nState = soap_call_ns_GetDwgBinaryInfo(&getInfoSoap, server_addr, "", "", , dwgInfo);

    bool bEof(false);

    if (getInfoSoap.error)

    {

        soap_print_fault(&getInfoSoap, stderr);

        bEof = true;

    }

    ofstream file;

    if(!bEof)

    {

        file.open(GetFilePath(_T("Circle.dwg")), std::ios::out | std::ios::binary | std::ios::trunc);

        if(file.is_open())

            file.write(dwgInfo.m_pBuffer, dwgInfo.m_nReadSize);

    }

    bEof = dwgInfo.m_bEof;

    int nPosition = dwgInfo.m_nReadSize;

    soap_end(&getInfoSoap);

    soap_done(&getInfoSoap);

    while(!bEof)

    {

        soap_call_ns_GetDwgBinaryInfo(&getInfoSoap, server_addr, "", "", nPosition, dwgInfo);

        if (getInfoSoap.error)

        {

            soap_print_fault(&getInfoSoap, stderr);

            bEof = true;

        }

        else

        {

            if(file.is_open())

                file.write(dwgInfo.m_pBuffer, dwgInfo.m_nReadSize);

            bEof = dwgInfo.m_bEof;

            nPosition += dwgInfo.m_nReadSize;

        }

        soap_end(&getInfoSoap);

        soap_done(&getInfoSoap);

    }

    if(file.is_open()) file.close();//关闭文件

}