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-rw-r--r--src/java/org/apache/fop/servlet/FopPrintServlet.java186
1 files changed, 32 insertions, 154 deletions
diff --git a/src/java/org/apache/fop/servlet/FopPrintServlet.java b/src/java/org/apache/fop/servlet/FopPrintServlet.java
index 8ac980ccd..6b3268572 100644
--- a/src/java/org/apache/fop/servlet/FopPrintServlet.java
+++ b/src/java/org/apache/fop/servlet/FopPrintServlet.java
@@ -1,5 +1,5 @@
/*
- * Copyright 1999-2005 The Apache Software Foundation.
+ * Copyright 1999-2006 The Apache Software Foundation.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
@@ -18,25 +18,18 @@
package org.apache.fop.servlet;
-import java.io.File;
-import java.io.InputStream;
+import java.io.IOException;
import java.io.PrintWriter;
-// JAXP
-import javax.servlet.ServletException;
-import javax.servlet.http.HttpServlet;
-import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
+
import javax.xml.transform.Transformer;
-import javax.xml.transform.TransformerFactory;
+import javax.xml.transform.TransformerException;
import javax.xml.transform.Result;
import javax.xml.transform.Source;
-import javax.xml.transform.URIResolver;
import javax.xml.transform.sax.SAXResult;
-import javax.xml.transform.stream.StreamSource;
-// XML
-import org.apache.commons.logging.impl.SimpleLog;
+import org.apache.fop.apps.FOPException;
import org.apache.fop.apps.FOUserAgent;
import org.apache.fop.apps.Fop;
import org.apache.fop.apps.MimeConstants;
@@ -58,164 +51,49 @@ import org.apache.fop.apps.MimeConstants;
* Example URL: http://servername/fop/servlet/FopPrintServlet?fo=readme.fo
* <br/>
* Example URL: http://servername/fop/servlet/FopPrintServlet?xml=data.xml&xsl=format.xsl
- *
- * @author <a href="mailto:fop-dev@xml.apache.org">Apache XML FOP Development Team</a>
+ * <br/>
+ * <b>Note:</b> This servlet is derived from FopServlet. Most methods are inherited from the
+ * superclass. Only the differences to the base class are necessary.
+ *
+ * @author <a href="mailto:fop-dev@xmlgraphics.apache.org">Apache FOP Development Team</a>
* @version $Id$
- * (todo) Doesn't work since there's no AWTRenderer at the moment. Revisit when
- * available.
- * (todo) Ev. add caching mechanism for Templates objects
*/
-public class FopPrintServlet extends HttpServlet {
-
- /** Name of the parameter used for the XSL-FO file */
- protected static final String FO_REQUEST_PARAM = "fo";
- /** Name of the parameter used for the XML file */
- protected static final String XML_REQUEST_PARAM = "xml";
- /** Name of the parameter used for the XSLT file */
- protected static final String XSLT_REQUEST_PARAM = "xslt";
-
- /** Logger to give to FOP */
- protected SimpleLog log = null;
-
- /** The TransformerFactory to use to create Transformer instances */
- protected TransformerFactory transFactory = null;
- /** URIResolver for use by this servlet */
- protected URIResolver uriResolver;
-
- /**
- * @see javax.servlet.GenericServlet#init()
- */
- public void init() throws ServletException {
- this.log = new SimpleLog("FOP/Print Servlet");
- log.setLevel(SimpleLog.LOG_LEVEL_WARN);
- this.uriResolver = new ServletContextURIResolver(getServletContext());
- this.transFactory = TransformerFactory.newInstance();
- this.transFactory.setURIResolver(this.uriResolver);
- }
-
- /**
- * @see javax.servlet.http.HttpServlet#doGet(HttpServletRequest, HttpServletResponse)
- */
- public void doGet(HttpServletRequest request,
- HttpServletResponse response) throws ServletException {
- if (log == null) {
- log = new SimpleLog("FOP/Print Servlet");
- log.setLevel(SimpleLog.LOG_LEVEL_WARN);
- }
-
- try {
- String foParam = request.getParameter(FO_REQUEST_PARAM);
- String xmlParam = request.getParameter(XML_REQUEST_PARAM);
- String xsltParam = request.getParameter(XSLT_REQUEST_PARAM);
-
- if (foParam != null) {
- InputStream file = new java.io.FileInputStream(foParam);
- renderFO(file, response);
- } else if ((xmlParam != null) && (xsltParam != null)) {
- renderXML(new File(xmlParam), new File(xsltParam), response);
- } else {
- response.setContentType("text/html");
-
- PrintWriter out = response.getWriter();
- out.println("<html><title>Error</title>\n"
- + "<body><h1>FopServlet Error</h1>\n"
- + "<h3>No 'fo' or 'xml/xsl' "
- + "request param given.</h3></body>\n</html>");
- }
- } catch (ServletException ex) {
- throw ex;
- } catch (Exception ex) {
- throw new ServletException(ex);
- }
- }
-
- /**
- * Renders an FO inputsource to the default printer.
- * @param foFile The XSL-FO file
- * @param response Response to write to
- * @throws ServletException In case of a problem
- */
- public void renderFO(InputStream foFile,
- HttpServletResponse response) throws ServletException {
- try {
- Fop fop = new Fop(MimeConstants.MIME_FOP_PRINT, getFOUserAgent());
-
- // Setup JAXP
- TransformerFactory factory = TransformerFactory.newInstance();
- Transformer transformer = factory.newTransformer(); //identity transformer
- transformer.setURIResolver(this.uriResolver);
-
- // Setup input for XSLT transformation
- Source src = new StreamSource(foFile);
-
- // Resulting SAX events (the generated FO) must be piped through to FOP
- Result res = new SAXResult(fop.getDefaultHandler());
-
- // Start XSLT transformation and FOP processing
- transformer.transform(src, res);
-
- reportOK (response);
- } catch (Exception ex) {
- throw new ServletException(ex);
- }
- }
+public class FopPrintServlet extends FopServlet {
/**
- * Renders an FO generated using an XML and a stylesheet to the default printer.
- * @param xmlfile XML file object
- * @param xsltfile XSLT stylesheet
- * @param response HTTP response object
- * @throws ServletException In case of a problem
+ * @see org.apache.fop.servlet.FopServlet#render(javax.xml.transform.Source,
+ * javax.xml.transform.Transformer, javax.servlet.http.HttpServletResponse)
*/
- public void renderXML(File xmlfile, File xsltfile,
- HttpServletResponse response) throws ServletException {
- try {
- Fop fop = new Fop(MimeConstants.MIME_FOP_PRINT, getFOUserAgent());
+ protected void render(Source src, Transformer transformer, HttpServletResponse response)
+ throws FOPException, TransformerException, IOException {
- // Setup XSLT
- TransformerFactory factory = TransformerFactory.newInstance();
- Transformer transformer = factory.newTransformer(new StreamSource(xsltfile));
- transformer.setURIResolver(this.uriResolver);
-
- // Setup input for XSLT transformation
- Source src = new StreamSource(xmlfile);
+ FOUserAgent foUserAgent = getFOUserAgent();
- // Resulting SAX events (the generated FO) must be piped through to FOP
- Result res = new SAXResult(fop.getDefaultHandler());
-
- // Start XSLT transformation and FOP processing
- transformer.transform(src, res);
-
- reportOK (response);
- } catch (Exception ex) {
- throw new ServletException(ex);
- }
+ //Setup FOP
+ Fop fop = fopFactory.newFop(MimeConstants.MIME_FOP_PRINT, foUserAgent);
+
+ //Make sure the XSL transformation's result is piped through to FOP
+ Result res = new SAXResult(fop.getDefaultHandler());
+
+ //Start the transformation and rendering process
+ transformer.transform(src, res);
+
+ //Return the result
+ reportOK(response);
}
// private helper, tell (browser) user that file printed
- private void reportOK(HttpServletResponse response)
- throws ServletException {
+ private void reportOK(HttpServletResponse response) throws IOException {
String sMsg = "<html><title>Success</title>\n"
+ "<body><h1>FopPrintServlet: </h1>"
- + "<h3>The requested data was printed</h3></body></html>";
+ + "<h3>The requested data was printed to the default printer.</h3></body></html>";
response.setContentType("text/html");
response.setContentLength(sMsg.length());
- try {
- PrintWriter out = response.getWriter();
- out.println(sMsg);
- out.flush();
- } catch (Exception ex) {
- throw new ServletException(ex);
- }
- }
-
- /** @return a new FOUserAgent for FOP */
- protected FOUserAgent getFOUserAgent() {
- FOUserAgent userAgent = new FOUserAgent();
- userAgent.setURIResolver(this.uriResolver);
- return userAgent;
+ PrintWriter out = response.getWriter();
+ out.println(sMsg);
+ out.flush();
}
}
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-26 23:46:44 +0000