wfsexceptionhandler.java

电子地图服务器,搭建自己的地图服务

/* Copyright (c) 2001 - 2007 TOPP - www.openplans.org. All rights reserved.
 * This code is licensed under the GPL 2.0 license, availible at the root
 * application directory.
 */
package org.geoserver.wfs.response;

import org.geoserver.ows.DefaultServiceExceptionHandler;
import org.geoserver.ows.util.ResponseUtils;
import org.geoserver.platform.Service;
import org.geoserver.platform.ServiceException;
import org.geoserver.wfs.WFS;
import org.geotools.util.Version;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.PrintStream;
import java.util.List;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;


/**
 * Handles a wfs service exception by producing an exception report.
 *
 * @author Justin Deoliveira, The Open Planning Project
 *
 */
public class WfsExceptionHandler extends DefaultServiceExceptionHandler {
    /**
     * WFS configuration
     */
    WFS wfs;

    /**
     * @param service The wfs service descriptors.
     */
    public WfsExceptionHandler(List services, WFS wfs) {
        super(services);
        this.wfs = wfs;
    }

    /**
     * Encodes a ogc:ServiceExceptionReport to output.
     */
    public void handleServiceException(ServiceException e, Service service,
        HttpServletRequest request, HttpServletResponse response) {
        Version version = service.getVersion();

        verboseExceptions = wfs.getGeoServer().isVerboseExceptions();
        if (new Version("1.0.0").equals(version)) {
            handle1_0(e, response);
        } else {
            super.handleServiceException(e, service, request, response);
        }
    }

    public void handle1_0(ServiceException e, HttpServletResponse response) {
        try {
            String tab = "   ";

            StringBuffer s = new StringBuffer();
            s.append("<?xml version=\"1.0\" ?>\n");
            s.append("<ServiceExceptionReport\n");
            s.append(tab + "version=\"1.2.0\"\n");
            s.append(tab + "xmlns=\"http://www.opengis.net/ogc\"\n");
            s.append(tab + "xmlns:xsi=\"http://www.w3.org/2001/XMLSchema-instance\"\n");
            s.append(tab);
            s.append("xsi:schemaLocation=\"http://www.opengis.net/ogc ");
            s.append(ResponseUtils.appendPath(wfs.getSchemaBaseURL(), "wfs/1.0.0/OGC-exception.xsd")
                + "\">\n");

            s.append(tab + "<ServiceException");

            if ((e.getCode() != null) && !e.getCode().equals("")) {
                s.append(" code=\"" + e.getCode() + "\"");
            }

            if ((e.getLocator() != null) && !e.getLocator().equals("")) {
                s.append(" locator=\"" + e.getLocator() + "\"");
            }

            s.append(">");

            if (e.getMessage() != null) {
                s.append("\n" + tab + tab);
                dumpExceptionMessages(e, s);

                if(verboseExceptions) {
                  ByteArrayOutputStream stackTrace = new ByteArrayOutputStream();
                  e.printStackTrace(new PrintStream(stackTrace));

                  s.append("\nDetails:\n");
                  s.append(ResponseUtils.encodeXML(new String(stackTrace.toByteArray())));
                }
            }

            s.append("\n</ServiceException>");
            s.append("</ServiceExceptionReport>");

            response.setContentType("text/xml");
            response.setCharacterEncoding("UTF-8");
            response.getOutputStream().write(s.toString().getBytes());
            response.getOutputStream().flush();
        } catch (IOException ioe) {
            throw new RuntimeException(ioe);
        }
    }

    //	public void handle1_1( ServiceException e,
    //			 HttpServletResponse response ) {
    //		
    //		try {
    //			String tab = "   ";
    //			
    //			StringBuffer s = new StringBuffer();
    //			s.append( "<?xml version=\"1.0\" ?>\n" );
    //			s.append( "<ExceptionReport\n" );
    //			s.append( tab + "version=\"1.1.0\"\n" );
    //			s.append( tab + "xmlns=\"http://www.opengis.net/ows\"\n" );
    //			s.append( tab + "xmlns:xsi=\"http://www.w3.org/2001/XMLSchema-instance\"\n" );
    //			s.append( tab );
    //			s.append( "xsi:schemaLocation=\"http://www.opengis.net/ows " );
    //			//TODO: dont hardcode schmea location
    //			s.append( "http://schemas.opengis.net/ows/1.0.0/owsExceptionReport.xsd\">\n" );
    //
    //			s.append( tab + "<Exception" );
    //			s.append( " exceptionCode=\"" + e.getCode() + "\"" );
    //			
    //			if ( e.getLocator() != null && !e.getLocator().equals( "" ) ) {
    //	            s.append(" locator=\"" + e.getLocator() + "\"" );
    //	        }
    //			s.append( ">");
    //			
    //			if ( e.getMessage() != null && !e.getMessage().equals( "" ) ) {
    //				s.append( "\n" + tab + tab );
    //				s.append( "<ExceptionText>\n");
    //				s.append( ResponseUtils.encodeXML( e.getMessage() ) );
    //				
    //				ByteArrayOutputStream stackTrace = new ByteArrayOutputStream();
    //				e.printStackTrace( new PrintStream( stackTrace ) );
    //				
    //				s.append( ResponseUtils.encodeXML( new String( stackTrace.toByteArray() ) ) );
    //				s.append( "</ExceptionText>\n");
    //			}
    //			
    //
    //			s.append( "\n</Exception>" );
    //			s.append( "</ExceptionReport>" );
    //			
    //			response.setContentType( "text/xml" );
    //			response.setCharacterEncoding( "UTF-8" );
    //			response.getOutputStream().write( s.toString().getBytes() );
    //			response.getOutputStream().flush();
    //			
    //		} 
    //		catch (IOException ioe) {
    //			throw new RuntimeException( ioe );
    //		}
    //	}
}