agswsclient.java

esri的ArcGIS Server超级学习模板程序（for java）

package com.esri.solutions.jitk.web.tasks.resources;

import java.io.InputStream;
import java.net.URL;

import org.apache.log4j.LogManager;
import org.apache.log4j.Logger;

import com.esri.arcgisws.EsriImageFormat;
import com.esri.arcgisws.EsriImageReturnType;
import com.esri.arcgisws.ImageDescription;
import com.esri.arcgisws.ImageDisplay;
import com.esri.arcgisws.ImageType;
import com.esri.arcgisws.MapDescription;
import com.esri.arcgisws.MapImage;
import com.esri.arcgisws.MapServerBindingStub;
import com.esri.arcgisws.MapServerInfo;
import com.esri.arcgisws.ServiceCatalogBindingStub;
import com.esri.arcgisws.ServiceDescription;
import com.esri.solutions.jitk.datasources.ogc.wms.InputStreamConverter;

public class AGSWSClient {
	private static Logger _logger = LogManager.getLogger(AGSWSClient.class.getName());

	public AGSWSClient() {
	}
	
    public byte[] getAGSWSMap(String urlinfo, int width, int height) {
    	try {
            String[] urlArray = urlinfo.split("\\*");
            String url = urlArray[1];
            MapServerBindingStub mapSvr = new MapServerBindingStub(new java.net.URL(url), null);
            ImageType imageType = new ImageType(EsriImageFormat.esriImagePNG, EsriImageReturnType.esriImageReturnURL);
            MapServerInfo mapSvrInfo = mapSvr.getServerInfo(mapSvr.getDefaultMapName());
            MapDescription mapDesc = mapSvrInfo.getDefaultMapDescription();
            ImageDisplay imageDisp = new ImageDisplay(height, width, 96, mapSvrInfo.getBackgroundColor());            
            ImageDescription imageDesc = new ImageDescription(imageType, imageDisp);            
            MapImage mapImage = mapSvr.exportMapImage(mapDesc, imageDesc);

			String mapUrl = mapImage.getImageURL();
			if (mapUrl == null || mapUrl.equalsIgnoreCase("")) {
				return mapImage.getImageData();
			}
			
			return loadImage(new URL(mapUrl));
    	} catch(Exception e) {
        	_logger.warn("unable to preview ags internet map", e);
            return null;
        }
    }	 
	
    public  String[] getAgsWebURLs(String catalogURL) {
        int svcCount = 0;

        try {
            URL url = new URL(catalogURL);
            ServiceCatalogBindingStub servicecatalog = new ServiceCatalogBindingStub(url, null);
            ServiceDescription[] sd = servicecatalog.getServiceDescriptions();

            for (int i = 0; i < sd.length; i++) {
                if (sd[i].getType().equalsIgnoreCase("MapServer")) {
                    svcCount++;
                }
            }

            String[] agswsServices = new String[svcCount];
            int m = 0;

            for (int i = 0; i < sd.length; i++) {
                if (sd[i].getType().equalsIgnoreCase("MapServer")) {
                    agswsServices[m] = sd[i].getName() + "*" + sd[i].getUrl();
                    m++;
                }
            }

            return agswsServices;
            
        } catch (Exception e) {
			_logger.warn("Unable to get ags web service", e);

            return null;
        }
    }
    
    private byte[] loadImage(URL url) throws Exception {
        InputStream is = url.openStream();
        InputStreamConverter isc = new InputStreamConverter();
        return isc.toByteArray(is);
    }           
}