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1
51
52 import java.io.*;
53
54 import javax.servlet.*;
55 import javax.servlet.http.*;
56
57 import org.xml.sax.InputSource  ;
58
59 import org.apache.fop.apps.Driver;
60 import org.apache.fop.apps.XSLTInputHandler;
61 import org.apache.fop.messaging.MessageHandler;
62
63 import org.apache.avalon.framework.logger.ConsoleLogger;
64 import org.apache.avalon.framework.logger.Logger;
65
66
87 public class FopServlet extends HttpServlet {
88 public static final String FO_REQUEST_PARAM = "fo";
89 public static final String XML_REQUEST_PARAM = "xml";
90 public static final String XSL_REQUEST_PARAM = "xsl";
91 Logger log = null;
92
93 public void doGet(HttpServletRequest request,
94 HttpServletResponse response) throws ServletException {
95 if (log == null) {
96 log = new ConsoleLogger(ConsoleLogger.LEVEL_WARN);
97 MessageHandler.setScreenLogger(log);
98 }
99 try {
100 String foParam = request.getParameter(FO_REQUEST_PARAM);
101 String xmlParam = request.getParameter(XML_REQUEST_PARAM);
102 String xslParam = request.getParameter(XSL_REQUEST_PARAM);
103
104 if (foParam != null) {
105 File fofile = new File(foParam);
106 FileInputStream file = new FileInputStream(fofile);
108 renderFO(new InputSource (file), response);
109 } else if ((xmlParam != null) && (xslParam != null)) {
110 XSLTInputHandler input =
111 new XSLTInputHandler(new File(xmlParam),
112 new File(xslParam));
113 renderXML(input, response);
114 } else {
115 PrintWriter out = response.getWriter();
116 out.println("<html><head><title>Error</title></head>\n"+
117 "<body><h1>FopServlet Error</h1><h3>No 'fo' "+
118 "request param given.</body></html>");
119 }
120 } catch (ServletException ex) {
121 throw ex;
122 }
123 catch (Exception ex) {
124 throw new ServletException(ex);
125 }
126 }
127
128
132 public void renderFO(InputSource foFile,
133 HttpServletResponse response) throws ServletException {
134 try {
135 ByteArrayOutputStream out = new ByteArrayOutputStream();
136
137 response.setContentType("application/pdf");
138
139 Driver driver = new Driver(foFile, out);
140 driver.setLogger(log);
141 driver.setRenderer(Driver.RENDER_PDF);
142 driver.run();
143
144 byte[] content = out.toByteArray();
145 response.setContentLength(content.length);
146 response.getOutputStream().write(content);
147 response.getOutputStream().flush();
148 } catch (Exception ex) {
149 throw new ServletException(ex);
150 }
151 }
152
153
158 public void renderXML(XSLTInputHandler input,
159 HttpServletResponse response) throws ServletException {
160 try {
161 ByteArrayOutputStream out = new ByteArrayOutputStream();
162
163 response.setContentType("application/pdf");
164
165 Driver driver = new Driver();
166 driver.setLogger(log);
167 driver.setRenderer(Driver.RENDER_PDF);
168 driver.setOutputStream(out);
169 driver.render(input.getParser(), input.getInputSource());
170
171 byte[] content = out.toByteArray();
172 response.setContentLength(content.length);
173 response.getOutputStream().write(content);
174 response.getOutputStream().flush();
175 } catch (Exception ex) {
176 throw new ServletException(ex);
177 }
178 }
179
180 }
181 |
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