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From Jim <supp...@hrsg.ca>
Subject javax.xml.transform.TransformerException: java.lang.NullPointerException
Date Tue, 22 Sep 2015 19:58:16 GMT
Stack trace

javax.servlet.ServletException: 
javax.xml.transform.TransformerException: java.lang.NullPointerException
        org.apache.fop.servlet.FopServlet.doGet(FopServlet.java:158)
        javax.servlet.http.HttpServlet.service(HttpServlet.java:624)
        javax.servlet.http.HttpServlet.service(HttpServlet.java:731)
        
org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)


line 158 is  throw new ServletException(ex);


public void doGet(HttpServletRequest request,
                      HttpServletResponse response) throws 
ServletException {
        try {
            //Get parameters
            String foParam = request.getParameter(FO_REQUEST_PARAM);
            String xmlParam = request.getParameter(XML_REQUEST_PARAM);
            String xsltParam = request.getParameter(XSLT_REQUEST_PARAM);
                                                String rootParam = 
request.getParameter(ROOT_REQUEST_PARAM);

            //Analyze parameters and decide with method to use
            if (foParam != null) {
                renderFO(foParam, response);
            } else if ((xmlParam != null) && (xsltParam != null)) {
                renderXML(xmlParam,xsltParam,rootParam,response);
            } else {
                response.setContentType("text/html");
                PrintWriter out = response.getWriter();
                out.println("<html><head><title>Error</title></head>\n"
                          + "<body><h1>FopServlet Error</h1><h3>No
'fo' 
"
                          + "request param given.</body></html>");
            }
        } catch (Exception ex) {
            throw new ServletException(ex);
        }
    }



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