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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