📄 importsvgtographicsservlet.java
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/**
*
*/
package com.esri.solutions.jitk.data.svg.importer;
import java.io.File;
import java.io.IOException;
import java.io.PrintWriter;
import java.util.Hashtable;
import java.util.Iterator;
import java.util.List;
import javax.faces.FactoryFinder;
import javax.faces.application.ApplicationFactory;
import javax.faces.context.FacesContext;
import javax.faces.context.FacesContextFactory;
import javax.faces.lifecycle.LifecycleFactory;
import javax.servlet.ServletConfig;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.apache.commons.fileupload.DefaultFileItemFactory;
import org.apache.commons.fileupload.FileItem;
import org.apache.commons.fileupload.FileUpload;
import org.apache.commons.fileupload.FileUploadException;
import org.apache.log4j.Level;
import org.apache.log4j.LogManager;
import org.apache.log4j.Logger;
import com.esri.adf.web.data.GraphicElement;
import com.esri.adf.web.data.WebContext;
import com.esri.adf.web.data.geometry.WebGeometry;
import com.esri.adf.web.data.geometry.WebSpatialReference;
import com.esri.solutions.jitk.data.svg.SVGIEException;
import com.esri.solutions.jitk.data.svg.SVGUtils;
/**
* @author vlad2928
*
*/
public class ImportSVGToGraphicsServlet extends HttpServlet {
private static final Logger _log = LogManager.getLogger(ImportSVGToGraphicsServlet.class);
public static final String REPOSITORY_PARAM = "com.esri.adf.UPLOAD_FILE_REPOSITORY";
public static final String SIZE_THRESHOLD_PARAM = "com.esri.adf.UPLOAD_SIZE_THRESHOLD";
private String repository;
private int threshold;
private String logError(String msg, String requestPage, String filename, String successPage) {
return "<meta http-equiv=\"refresh\" content=\"1; URL=" + requestPage +
"?error=" + msg + "&requestPage=" + requestPage + "&filename=" +
filename + "&successPage=" + successPage + "\" />";
}
protected void doPost(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
LifecycleFactory lFactory = (LifecycleFactory) FactoryFinder.getFactory(FactoryFinder.LIFECYCLE_FACTORY);
FacesContextFactory cFactory = (FacesContextFactory) FactoryFinder.getFactory(FactoryFinder.FACES_CONTEXT_FACTORY);
FacesContext fContext = cFactory.getFacesContext(getServletContext(), req, resp, lFactory.getLifecycle("DEFAULT"));
ApplicationFactory aFactory = (ApplicationFactory) FactoryFinder.getFactory(FactoryFinder.APPLICATION_FACTORY);
WebContext webContext = (WebContext) aFactory.getApplication().createValueBinding("#{mapContext}").getValue(fContext);
Hashtable<String, IGraphicElementInserter> geInserters = (Hashtable<String, IGraphicElementInserter>) aFactory.getApplication().createValueBinding("#{GraphicElementInserters}").getValue(fContext);
String requestPage = "";
String successPage = "";
String filename = "";
PrintWriter out = null;
List fileItems = null;
try { out = resp.getWriter(); } catch (IOException e) { _log.log(Level.FATAL, "Unable to get servlet response writer.", e); return; }
resp.setContentType("text/html;charset=UTF-8");
out.println("<html>");
out.println("<head>");
out.println("<title>Import SVG Response</title>");
try {
fileItems = new FileUpload(new DefaultFileItemFactory(threshold, new File(repository))).parseRequest(req);
for(Iterator i = fileItems.iterator(); i.hasNext();) {
FileItem item = (FileItem) i.next();
if (item.isFormField()) {
if(item.getFieldName().toString().equals("requestPage"))
requestPage = (String)item.getString();
if(item.getFieldName().toString().equals("successPage"))
successPage = (String)item.getString();
} else {
filename = item.getName();
if (filename.indexOf("\\") != -1)
filename = filename.substring(filename.lastIndexOf("\\") + 1);
if (filename.indexOf("/") != -1)
filename = filename.substring(filename.lastIndexOf("/") + 1);
long filesize = item.getSize();
if(filesize == 0)
out.println(logError("File '" + filename + "' doesn't exists.", requestPage, filename, successPage));
else
try {
if(geInserters != null) {
SVGImporter svgReader = new SVGImporter();
svgReader.read(item.getInputStream());
importFeatures(webContext, svgReader.getLabels(), geInserters.get("Labels"));
importFeatures(webContext, svgReader.getPoints(), geInserters.get("Points"));
importFeatures(webContext, svgReader.getGraphics(), geInserters.get("Graphics"));
importFeatures(webContext, svgReader.getLines(), geInserters.get("Lines"));
importFeatures(webContext, svgReader.getPolygons(), geInserters.get("Polygons"));
importFeatures(webContext, svgReader.getArcs(), geInserters.get("Arcs"));
out.println("<meta http-equiv=\"refresh\" content=\"1; URL=" + successPage + "\" />");
} else out.println(logError("Application configuration error: list of IGraphicElementInserters is not provided.", requestPage, filename, successPage));
} catch (SVGIEException e) {
_log.log(Level.FATAL, "ERROR importing svg file.", e);
out.println(logError("ERROR importing svg file.", requestPage, filename, successPage));
}
item.delete();
}
}
} catch (FileUploadException e) {
_log.log(Level.FATAL, "ERROR uploading file.", e);
out.println(logError("ERROR uploading file.", requestPage, filename, successPage));
}
out.println("</head><body></body></html>");
out.close();
}
private void importFeatures(WebContext webContext, List<GraphicElement> features, IGraphicElementInserter geInserter) {
if(geInserter != null && geInserter.isEnabled()) {
WebSpatialReference sr = webContext.getSpatialReference();
for(Iterator<GraphicElement> f = features.iterator(); f.hasNext();) {
GraphicElement ge = f.next();
WebGeometry geometry = ge.getGeometry();
if(!geometry.getSpatialReference().equals(sr))
ge.setGeometry(geometry.project(sr));
geInserter.addGraphics(ge);
}
}
}
public void init(ServletConfig config) throws ServletException {
super.init(config);
String val = config.getInitParameter(REPOSITORY_PARAM);
repository = (val == null) ? System.getProperty("java.io.tmpdir") : val;
_log.debug("File upload repository: " + repository);
threshold = SVGUtils.toInt(config.getInitParameter(SIZE_THRESHOLD_PARAM), 10240);
_log.debug("File upload threshold: " + threshold);
}
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