exportgraphicstosvgservlet.java

来自「esri的ArcGIS Server超级学习模板程序（for java）」· Java 代码 · 共 46 行

/**
 * 
 */
package com.esri.solutions.jitk.data.svg.exporter;

import java.io.IOException;
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.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import com.esri.adf.web.data.WebContext;
import com.esri.solutions.jitk.data.svg.SVGUtils;

/**
 * @author vlad2928
 *
 */
public class ExportGraphicsToSVGServlet extends HttpServlet {
	
	@Override
	protected void doGet(HttpServletRequest request, HttpServletResponse response) 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(), request, response, lFactory.getLifecycle("DEFAULT"));
		ApplicationFactory aFactory = (ApplicationFactory) FactoryFinder.getFactory(FactoryFinder.APPLICATION_FACTORY);
		WebContext webContext = (WebContext) aFactory.getApplication().createValueBinding("#{mapContext}").getValue(fContext);
		List<IGraphicElementCollection> geCollectionList = (List<IGraphicElementCollection>) aFactory.getApplication().createValueBinding("#{GECollectionList}").getValue(fContext);
		
		response.setContentType("image/svg+xml; charset=UTF-8");
		response.setHeader("Content-Disposition", "attachment; filename=" + SVGUtils.getUniqueFileName() + ".svg");
		response.setHeader("Expires", "0");
	    response.setHeader("Cache-Control", "must-revalidate, post-check=0, pre-check=0");
	    response.setHeader("Pragma", "public");

	    response.getWriter().print(new SVGExporter(webContext).export(geCollectionList));
	}
}