開源wkhtmltopdf使用心得 （三）

前面已經在程序里面使用wkhtmltopdf.exe進行網頁轉換。但是存在一些弊端，而且也不方便我們使用，接下來我們將使用wkhtmltox庫提供的API接口將wkhtmltox添加到我們自己的項目中：

vs2008中添加使用wkhtmltopdf開源項目
1.下載wkhtmltox-0.12.3.2_msvc2013-win32.exe安裝
網站：http://wkhtmltopdf.org/
2.將wkhtmltopdf的安裝目錄下的lib和include添加到vs中
a.打開vs選擇工具-選項-項目和解決方案-VC++目錄
包含文件中添加inlcude路徑
庫文件中添加lib路徑
3.在項目中添加
#include <wkhtmltox/pdf.h>

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

4. 將wkhtmltox.dll復制到當前項目生成的exe目錄下

vs2010中添加lib和include
項目右擊-屬性-VC++目錄

/****************************************************
頭文件中添加以下代碼
****************************************************/



#include <wkhtmltox\pdf.h>
#include <wkhtmltox\image.h>


static void pdf_progress_changed(wkhtmltopdf_converter* c, int p); // 類成員函數作為回調函數

static void pdf_phase_changed(wkhtmltopdf_converter* c);

static void pdf_error(wkhtmltopdf_converter* c, const char* msg);

static void pdf_warning(wkhtmltopdf_converter* c, const char* msg);

static void pdf_finish(wkhtmltopdf_converter* c, int p);

static CmyHtmlToPdfDlg* myDlg;  // 作為類指針在回調函數中使用類非靜態變量和非靜態成員函數

/****************************************************
源文件中添加以下代碼
****************************************************/
CmyHtmlToPdfDlg::CmyHtmlToPdfDlg(CWnd* pParent /*=NULL*/)
    : CDialog(CmyHtmlToPdfDlg::IDD, pParent)
    , m_editPipe_data(_T(""))
{
    m_hIcon = AfxGetApp()->LoadIcon(IDR_MAINFRAME);
        myDlg  = this;
}

CmyHtmlToPdfDlg * CmyHtmlToPdfDlg::myDlg = NULL;
void CmyHtmlToPdfDlg::pdf_progress_changed(wkhtmltopdf_converter* c, int p){ 
    printf("%3d%%\r", p);    
    fflush(stdout); 
    CString str;
    str.Format("pdf progress changed %s",wkhtmltopdf_progress_string(c));
    myDlg->m_editPipe.ReplaceSel(str + "\r\n");
} 

void CmyHtmlToPdfDlg::pdf_phase_changed(wkhtmltopdf_converter* c){ 
    int phase = wkhtmltopdf_current_phase(c); 
    printf("pdf phase changed %s\n", wkhtmltopdf_phase_description(c,phase)); 
    CString str;
    str.Format("%s", wkhtmltopdf_phase_description(c,phase));
    myDlg->m_editPipe.ReplaceSel(str + "\r\n");
} 

void CmyHtmlToPdfDlg::pdf_error(wkhtmltopdf_converter* c, const char* msg){ 
    fprintf(stderr, "Error: %s\n", msg);
    CString str;
    str.Format("pdf error %s", msg);
    myDlg->m_editPipe.ReplaceSel(str + "\r\n");
    //AfxMessageBox(msg);
} 

void CmyHtmlToPdfDlg::pdf_warning(wkhtmltopdf_converter* c, const char* msg){ 
    fprintf(stderr, "Warning: %s\n", msg);
    CString str;
    str.Format("pdf warning %s", msg);
    myDlg->m_editPipe.ReplaceSel(str + "\r\n");
    //AfxMessageBox(msg);
} 

void CmyHtmlToPdfDlg::pdf_finish(wkhtmltopdf_converter* c, int p) { 
    printf("%3d%%\r", p);    
    //fflush(stdout); 
    int iCode = wkhtmltopdf_http_error_code(c);
    int phase = wkhtmltopdf_current_phase(c); 
    CString str2;
    str2.Format("%s", wkhtmltopdf_phase_description(c,phase));
    myDlg->m_editPipe.ReplaceSel(str2 + "\r\n");
    CString str,str1, tmp;
    str.Format("error code %d", iCode);
    str1.Format("finish code %d", p);
    tmp = str + "\r\n" + str1;
    myDlg->m_editPipe.ReplaceSel(tmp + "\r\n");
    if (iCode == 0 && p != 0 && str2 == "Done")
    {
        //MessageBox("下載完成");
        if (myDlg == NULL)
        {
            return;
        }
        myDlg->mess();
    } else
    {
        ;
    }

} 

void CmyHtmlToPdfDlg::OnBnClickedButton1()
{
    // TODO: 在此添加控件通知處理程序代碼
    CString strAddress, tmpName;
    m_editAddress.GetWindowText(strAddress);    
    BOOL isOpen = FALSE;        //是否打開(否則為保存)  
    CString defaultDir = "D:\\";   //默認打開的文件路徑  
    CString fileName = "newFile.pdf";         //默認保存的文件名  
    CString filter = "文件(*.pdf)|*.pdf||";   //文件過慮的類型  
    CFileDialog openFileDlg(isOpen, defaultDir, fileName, OFN_HIDEREADONLY|OFN_OVERWRITEPROMPT, filter, NULL);  
    openFileDlg.GetOFN().lpstrInitialDir = "D:\\my\\";  //默認打開目錄
    INT_PTR result = openFileDlg.DoModal();  
    CString filePath = defaultDir + "\\" + fileName;  
    if(result == IDOK) {  
        filePath = openFileDlg.GetPathName();  
    }

    //CWnd::SetDlgItemTextW(IDC_EDIT_DEST, filePath);  

    //     std::string str =  CW2A(tmpName);
    //     const char *tmName = str.c_str();
    // 
    // 
    //     std::string strAddr =  CW2A(strAddress);
    //     const char *tmAddr = strAddr.c_str();
    //     CString sWebAddress;
    //     sWebAddress = "D:\\htmltopdf\\wkhtmltopdf.exe";
    //     sWebAddress += " www.hao123.com";
    //     sWebAddress += " D:\\my資料庫\\我的資料.pdf";

    //ShellExecute(this->m_hWnd, "open", "D:\\htmltopdf\\wkhtmltopdf.exe", sWebAddress, NULL, SW_SHOW);

    CString sWebAddress, strLocaPath;
    sWebAddress = strAddress;
    strLocaPath = filePath;
    //     strLocaPath = drive;
    //     strLocaPath += "\\" + fileName;
    //     strTmpPath = strLocaPath;

    std::string tmpPath = strLocaPath;
    std::string tmpAddr = sWebAddress;
    wkhtmltopdf_global_settings* gs; 
    wkhtmltopdf_object_settings* os; 
    wkhtmltopdf_converter* c; 
    int i = 0;
    wkhtmltopdf_init(i); 

    gs = wkhtmltopdf_create_global_settings(); 
    wkhtmltopdf_set_global_setting(gs, "out", tmpPath.c_str()); 

    os = wkhtmltopdf_create_object_settings(); 
    wkhtmltopdf_set_object_setting(os, "page", tmpAddr.c_str()); 

    c = wkhtmltopdf_create_converter(gs); 

    wkhtmltopdf_set_progress_changed_callback(c, CmyHtmlToPdfDlg::pdf_progress_changed); 
    wkhtmltopdf_set_phase_changed_callback(c, CmyHtmlToPdfDlg::pdf_phase_changed); 
    wkhtmltopdf_set_error_callback(c, CmyHtmlToPdfDlg::pdf_error); 
    wkhtmltopdf_set_warning_callback(c, CmyHtmlToPdfDlg::pdf_warning); 
    wkhtmltopdf_set_finished_callback(c, CmyHtmlToPdfDlg::pdf_finish);

    wkhtmltopdf_add_object(c, os, NULL); 

    if( !wkhtmltopdf_convert(c) ) 
        fprintf(stderr, "Convertion failed!"); 

//     int iCode = wkhtmltopdf_http_error_code(c);// icode =0 是成功
//     printf("httpErrorCode: %d\n", wkhtmltopdf_http_error_code(c)); 
//     if (!iCode)
//     {
//         AfxMessageBox("SUCESS");
//     }

//     wkhtmltopdf_destroy_global_settings(gs);
// 
//     wkhtmltopdf_destroy_object_settings(os);
// 
//     wkhtmltopdf_destroy_converter(c); 
// 
//     iCode = wkhtmltopdf_deinit(); 

}

 

注意：保存的目錄不能有中文路徑和中文名稱，如果路徑中有中文，則不能轉換，如果名稱中有中文，則轉換的pdf名稱中文部分是亂碼。