package com.dji.sample.patches.utils;
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import com.alibaba.fastjson.JSONArray;
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import com.alibaba.fastjson.JSONObject;
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import org.dom4j.Document;
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import org.dom4j.DocumentException;
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import org.dom4j.Element;
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import org.dom4j.io.SAXReader;
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import java.io.InputStream;
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import java.util.List;
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/**
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* 解析KML文件工具类
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*/
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public class ParseKmlFileUtil {
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/**
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* 解析kml中的数据
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* @param inputStream
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* @return
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*/
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public static String kmlParseData(InputStream inputStream) {
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SAXReader reader = new SAXReader();
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Document doc = null;
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try {
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doc = reader.read(inputStream);
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} catch (DocumentException e) {
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e.printStackTrace();
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}
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return getResultJSON(doc);
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}
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private static String getResultJSON(Document doc) {
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JSONObject jObj = new JSONObject();
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if (doc == null) {
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return null;
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}
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JSONArray jArray = new JSONArray();
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int index = 0;
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String autoFlightSpeed = "";
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String actionOnFinish = "";
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List<Element> rootEls = doc.getRootElement().elements();
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for (Element rootEl : rootEls) {
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List<Element> docEls = rootEl.elements();
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for (Element docEl : docEls) {
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if (docEl.getName().equals("Folder")) {
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List<Element> folderEls = docEl.elements();
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for (Element folderEl : folderEls) {
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if (folderEl.getName().equals("Placemark")) {
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JSONObject wayPointObj = new JSONObject();
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List<Element> placeMarkEls = folderEl.elements();
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index++;
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for (Element placeMarkEl : placeMarkEls) {
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if (placeMarkEl.getName().equals("ExtendedData")) {
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String heading = placeMarkEl.elementTextTrim("heading");
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String speed = placeMarkEl.elementTextTrim("speed");
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String turnMode = placeMarkEl.elementTextTrim("turnMode");
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wayPointObj.put("index", index);
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wayPointObj.put("heading", Integer.parseInt(heading));
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wayPointObj.put("speed", Integer.parseInt(speed));
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wayPointObj.put("turnMode", turnMode);
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//航点动作
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JSONArray actionsArr = new JSONArray();
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if (placeMarkEl.elements("actions") != null) {
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int hIndex = 1;
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List<Element> elList = placeMarkEl.elements("actions");
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for (Element el : elList) {
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JSONObject wayAction = new JSONObject();
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String actionsName = el.getTextTrim();
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//这里只解析航点动作，其余的参数可以根据情况自行取值
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if (!(actionsName.equals("ShootPhoto")) && !(actionsName.equals("StartRecording")) && !(actionsName.equals("Hovering")) && !(actionsName.equals("StopRecording"))) {
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continue;
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}
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String actionParam = "";//动作参数
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if (actionsName.equals("ShootPhoto")) {//拍照
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actionParam = el.attribute("targetMode").getValue();
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} else if (actionsName.equals("StartRecording")) {//开始录影
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actionParam = el.attribute("targetMode").getValue();
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} else if (actionsName.equals("Hovering")) {//悬停
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actionParam = el.attribute("param").getValue();
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} else if (actionsName.equals("StopRecording")) {//结束录影
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actionParam = el.attribute("targetMode").getValue();
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}
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String actionName = el.attribute("label").getValue();//动作名称
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wayAction.put("index", hIndex++);
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wayAction.put("actionParam", Integer.parseInt(actionParam));
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wayAction.put("actionName", actionName);
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actionsArr.add(wayAction);
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}
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}
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wayPointObj.put("wayPoint", actionsArr);
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}
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if (placeMarkEl.getName().equals("Point")) {
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String coordinates = placeMarkEl.elementTextTrim("coordinates");
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wayPointObj.put("latitude", Double.parseDouble(coordinates.split(",")[1]));//纬度
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wayPointObj.put("longitude", Double.parseDouble(coordinates.split(",")[0]));//经度
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wayPointObj.put("altitude", Float.parseFloat(coordinates.split(",")[2]));//海拔高度
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}
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}
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jArray.add(wayPointObj);
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}
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}
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}
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if (docEl.getName().equals("Placemark")) {
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List<Element> extendedDataEls = docEl.elements();
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for (Element extendedDataEl : extendedDataEls) {
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if (extendedDataEl.getName().equals("ExtendedData")) {
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autoFlightSpeed = extendedDataEl.elementTextTrim("autoFlightSpeed");
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actionOnFinish = extendedDataEl.elementTextTrim("actionOnFinish");
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}
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}
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}
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}
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}
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jObj.put("autoFlightSpeed", autoFlightSpeed);
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jObj.put("actionOnFinish", actionOnFinish);
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jObj.put("wayPoint", jArray);
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return JSONObject.toJSONString(jObj);
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}
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}
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