如何通過/從Java

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出口KML數據我正在開發一個RESTful Web服務其中的一個特徵是，該服務將獲取的用戶當前位置，並顯示他附近的餐館。如何通過/從Java

直到現在，我從有關谷歌地圖API的得到JSON數據完成這個任務，並分析相關數據，並將其傳遞到客戶端/消費者。但是現在不用文字/ JSON數據，我想通過KML附近餐館的數據，這樣消費者可以根據地圖而不是簡單的文字在表格中顯示它。

我創造我的KML數據similiar方式follwing代碼執行：

package de.micromata.jak.examples; 

import java.io.File; 
import java.io.FileNotFoundException; 

import de.micromata.opengis.kml.v_2_2_0.Document; 
import de.micromata.opengis.kml.v_2_2_0.Folder; 
import de.micromata.opengis.kml.v_2_2_0.Icon; 
import de.micromata.opengis.kml.v_2_2_0.Kml; 
import de.micromata.opengis.kml.v_2_2_0.Placemark; 
import de.micromata.opengis.kml.v_2_2_0.Style; 

/** 
* This example generates a KML file with a placemark and a chart for each continent. The chart is generated with the Google Chart API and 
* show the area (surface of the earth) of each continent. 
* 
* Google Chart API example: http://chart.apis.google.com/chart?cht=p3&chd=t:60,40&chs=250x100&chl=Hello|World 
*/ 
public class Example1 { 

    public static void main(String[] args) throws FileNotFoundException { 
     final Kml kml = new Kml(); 
     Document doc = kml.createAndSetDocument().withName("JAK Example1").withOpen(true); 

     // create a Folder 
     Folder folder = doc.createAndAddFolder(); 
     folder.withName("Continents with Earth's surface").withOpen(true); 

     // create Placemark elements 
     createPlacemarkWithChart(doc, folder, 93.24607775062842, 47.49808862281773, "Asia", 30); 
     createPlacemarkWithChart(doc, folder, 19.44601806124206, 10.13133611111111, "Africa", 20); 
     createPlacemarkWithChart(doc, folder, -103.5286299241638, 41.26035225962401, "North America", 17); 
     createPlacemarkWithChart(doc, folder, -59.96161780270248, -13.27347674076888, "South America", 12); 
     createPlacemarkWithChart(doc, folder, 14.45531426360271, 47.26208181151567, "Europe", 7); 
     createPlacemarkWithChart(doc, folder, 135.0555272486322, -26.23824399654937, "Australia", 6); 

     // print and save 
     kml.marshal(new File("advancedexample1.kml")); 
    } 


/** 
* The createPlacemarkWithChart()-method generates and set a placemark object, with the given statistical data . The Icon and Style 
* objects (color and size of the text and icon) are saved to the root element. The placemark is created and set to the given folder. 
* 
* @param document structure of the KML file 
* @param folder to add continent 
* @param longitude of the continent 
* @param latitude of the continent 
* @param continentName or name of the placemark 
* @param coveredLandmass in percent 
*/ 
private static void createPlacemarkWithChart(Document document, Folder folder, double longitude, double latitude, 
    String continentName, int coveredLandmass) { 

    int remainingLand = 100 - coveredLandmass; 
    Icon icon = new Icon() 
     .withHref("http://chart.apis.google.com/chart?chs=380x200&chd=t:" + coveredLandmass + "," + remainingLand + "&cht=p&chf=bg,s,ffffff00"); 
    Style style = document.createAndAddStyle(); 
    style.withId("style_" + continentName) // set the stylename to use this style from the placemark 
     .createAndSetIconStyle().withScale(5.0).withIcon(icon); // set size and icon 
    style.createAndSetLabelStyle().withColor("ff43b3ff").withScale(5.0); // set color and size of the continent name 

    Placemark placemark = folder.createAndAddPlacemark(); 
    // use the style for each continent 
    placemark.withName(continentName) 
     .withStyleUrl("#style_" + continentName) 
     // 3D chart imgae 
     .withDescription(
      "<![CDATA[<img src=\"http://chart.apis.google.com/chart?chs=430x200&chd=t:" + coveredLandmass + "," + remainingLand + "&cht=p3&chl=" + continentName + "|remaining&chtt=Earth's surface\" />") 
     // coordinates and distance (zoom level) of the viewer 
     .createAndSetLookAt().withLongitude(longitude).withLatitude(latitude).withAltitude(0).withRange(12000000); 

    placemark.createAndSetPoint().addToCoordinates(longitude, latitude); // set coordinates 
} 

}

現在，我應該怎麼通過這個生成的KML數據，以我的消費？

以前，對於JSON數據，我創建了ArrayList並將數據放入其中，最後將ArrayList的對象返回給使用者。但我不知道如何使用KML數據完成相同的任務。

任何幫助將不勝感激。

請提出任何其他更好的辦法解決上述問題。

謝謝！

來源

2017-09-03 Harshil Doshi

什麼是背後downvote原因在地圖上？ –

如果您公開服務的KML，你可以加載它與KmlLayer

來源

2017-09-03 23:31:39 geocodezip

在Map上加載KML數據是下一步，現在我只想將這個KML數據傳遞給我的Web服務使用者。（注意：KML將根據用戶的位置動態生成） –

如何通過/從Java

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