Before I read this I had the same problem as you
I tried to solve it like this:
- 1) I wrote a servlet wich writes the content into the session:
/**********************
public PDFServiceImpl() {
super();
}
public String prepareSession(String header, String table) {
try {
if(table != null && !table.trim().equals("")){
getSession().removeAttribute("_pdf");
getSession().removeAttribute("_content");
getSession().removeAttribute("_header");
String resultKey =
ServerUtils.generateOnTimeKey();
if(log.isInfoEnabled())
log.info("PDFServiceImpl.showProfilAsPDFForBerater CRC for PDF crc: "
+ resultKey);
if (resultKey.length() < 6)
throw
GwtExceptionBuilder.getGWTBadRequestException("PDFServiceImpl CRC was
smaller than 6 chars :"
+ " crc: " + resultKey
+ " return!");
getSession().setAttribute("_pdf", resultKey);
getSession().setAttribute("_content", table);
getSession().setAttribute("_header", header);
log.info("PDFServiceImpl prepair pdf-session.
ResultKey = "+
resultKey);
return resultKey;
}
log.info("PDFServiceImpl tried prepair pdf-session and
failed
cause tableString is empty returns null");
return null;
} catch (Exception e) {
log.info("PDFServiceImpl tried prepair pdf-session and
failed.
returns null");
return null;
}
}
************************/
- 2)and wrote an HTTP Servlet wich reads the session attributes an
creates the pdf:
/***********************
public class PDFGenerator extends HttpServlet{
....
public PDFGenerator() {
super();
}
public void doGet (HttpServletRequest request, HttpServletResponse
response)
throws IOException, ServletException {
// we retrieve the content
String content =
(String)request.getSession().getAttribute("_content");
String header = (String)
request.getSession().getAttribute("_header");
StringBuffer buf = new StringBuffer();
buf.append("<html>");
// put in some style
buf.append("<head>");
buf.append("<meta http-equiv=\"content-typ\" content=\"text/
html; charset=windows-1250\"></meta>");
buf.append("<link rel='stylesheet' type='text/css'
href='http://xyz/css/stylsheet.css' media='print'/>");
buf.append("</head>");
buf.append("<body>");
try {
DocumentBuilder builder =
DocumentBuilderFactory.newInstance().newDocumentBuilder();
org.w3c.dom.Document doc = builder.parse(new
StringBufferInputStream(buf.toString()));
ITextRenderer renderer = new ITextRenderer();
renderer.setDocument(doc, null);
renderer.layout();
response.setContentType("application/pdf");
OutputStream os = response.getOutputStream();
renderer.createPDF(os);
os.close();
} catch (Exception ex) {
ex.printStackTrace();
response.setHeader("Content-Type", "text/html");
response.setContentType("text/html");
PrintWriter out = response.getWriter();
StringBuilder html = new StringBuilder();
html.append("<html>");
html.append("<head>");
html.append("<meta http-equiv=\"content-type\"
content=
\"text/html; charset=windows-1250\">");
html.append("<title>exeption PDF</title>");
html.append("</head>");
html.append("<body>");
html.append("<h3 align=\"center\">");
html.append("<br><br><br><hr color=\"red\">");
html.append("<font size=\"4\"
color=\"#004B8D\">");
html.append("<br><br>Fehler beim Export des
PDFs:<br><br>");
html.append("</font>");
html.append("<font size=\"3\"
color=\"#004B8D\">");
html.append("<br><br>"+ex.getMessage()+"<br><br><hr>");
html.append(content);
html.append("</font>");
html.append("<hr color=\"red\">");
html.append("</h3>");
html.append("</body>");
html.append("</html>");
out.println(html);
}
....
*****************/
-3) And ivoked It like this on client site:
PDFService.Util.getInstance().prepareSession(Window.prompt("Hier bitte
eine Überschrift für die Tabelle eingeben!", ""), table.toString(),
new AsyncCallback()
{
public void onFailure(Throwable caught)
{
Window.alert(" Exception:
"+caught.getMessage());
}
public void onSuccess(Object result) {
if (result!=null && result
instanceof String){
String b = (String)
result;
Window.open("PDFGenerator?session=" + b, "_blank",
"resizable");
}else{
Window.alert("F.....");
}
}
});
- 4) table.toString:
public String toString(){
return DOM.getInnerHTML(getElement());
}
IMPORTENT HERE:
==============
This worked with firefox but the ie returned a html without quotes and
other important characters!!!!
So I was forced to parse the whole html on server-site and clean all
the mass that ie returned me
by "hand". This was real anoying.... so I let it be.
My approach now is to serialize the DOM- Object in any way. Send it to
server and process it browser independen. But this step is still
proceeding
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