Java(Android)解析KML文件

參考自：http://blog.csdn.net/yyywyr/article/details/38359049
http://blog.csdn.net/warrenwyf/article/details/5703279
http://zhidao.baidu.com/question/568729363.html
1 KML文件
现有一个在ARCGIS中生成的点要素shapefile文件，将其转换成kmz文件。可是这个kmz文件并非纯文本的KML服务。而是一个压缩文件，用压缩软件打开这个kmz之后会发现当中包括了一个“doc.kml”和一个“*.png”图标文件。因此。我们须要解析的就是这个doc.kml文件。

其格式例如以下：

xml version="1.0" encoding="UTF-8"?

>

<kml xmlns="http://www.opengis.net/kml/2.2" xmlns:gx="http://www.google.com/kml/ext/2.2" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.opengis.net/kml/2.2 http://schemas.opengis.net/kml/2.2.0/ogckml22.xsd http://www.google.com/kml/ext/2.2 http://code.google.com/apis/kml/schema/kml22gx.xsd"> <Document id="4thalter"> <name>4thaltername> <Snippet>Snippet> <Folder id="FeatureLayer0"> <name>4thaltername> <Snippet>Snippet> <Placemark id="ID_00000"> <name>456name> <Snippet>Snippet> <description> 这里是一个HTML文档 description> <styleUrl>#IconStyle00styleUrl> <Point> <altitudeMode>clampToGroundaltitudeMode> <coordinates> 119.46,30.96,0coordinates> Point> Placemark> <Placemark id="ID_00002"> <name>457name> <Snippet>Snippet> <description> 这里是一个HTML文档 description> <styleUrl>#IconStyle00styleUrl> <Point> <altitudeMode>clampToGroundaltitudeMode> <coordinates> 120.46,30.96,0coordinates> Point> Placemark> <Placemark id="ID_00022"> <name>xc64name> <Snippet>Snippet> <description> 这里是一个HTML文档 description> <styleUrl>#IconStyle00styleUrl> <Point> <altitudeMode>clampToGroundaltitudeMode> <coordinates> 118.81,30.93,0coordinates> Point> Placemark> Folder> <Style id="IconStyle00"> <IconStyle> <Icon><href>Layer0_Symbol_11269a08.pnghref>Icon> <scale>0.437500scale> IconStyle> <LabelStyle> <color>ff000000color> <scale>0.833333scale> LabelStyle> <PolyStyle> <color>ff000000color> <outline>0outline> PolyStyle> Style> Document> kml>

我们须要解析的属性标签存放在description结点下的HTML中，例如以下：

"http://www.w3.org/1999/XSL/Format" xmlns:msxsl="urn:schemas-microsoft-com:xslt">



"Content-Type" content="text/html">

"content-type" content="text/html; charset=UTF-8">



"margin:0px 0px 0px 0px;overflow:auto;background:#FFFFFF;">

<table style="font-family:Arial,Verdana,Times;font-size:12px;text-align:left;width:100%;border-collapse:collapse;padding:3px 3px 3px 3px">

"text-align:center;font-weight:bold;background:#9CBCE2">

第四组







<table style="font-family:Arial,Verdana,Times;font-size:12px;text-align:left;width:100%;border-spacing:0px; padding:3px 3px 3px 3px">



FID

22



"#D4E4F3">

soiltype

6





x

673556



"#D4E4F3">

y

3424365





dem

14



"#D4E4F3">

planc

0





profc

0



"#D4E4F3">

slope

0





PYNAME

第四组



"#D4E4F3">

ID

664





name

xc64



table>





table>





]]>

在本案例中。我须要从HTML中提取出坐标x,y和name这三个属性。代码例如以下：

package com.test.parsekml;

import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.util.Iterator;
import java.util.zip.ZipEntry;
import java.util.zip.ZipException;
import java.util.zip.ZipFile;
import java.util.zip.ZipInputStream;

import org.dom4j.Document;
import org.dom4j.DocumentException;
import org.dom4j.Element;
import org.dom4j.io.SAXReader;
import org.jsoup.Jsoup;
import org.jsoup.select.Elements;
import android.util.Log;

public class ReadKml {
    public void parseKml(String pathName) throws Exception
    {       
        File file = new File(pathName);//pathName为KML文件的路径
        try {
            ZipFile zipFile = new ZipFile(file);
            ZipInputStream zipInputStream = null;
            InputStream inputStream = null;
            ZipEntry entry = null;
            zipInputStream = new ZipInputStream(new FileInputStream(file));
            while ((entry = zipInputStream.getNextEntry()) != null) {
                String zipEntryName = entry.getName();
                Log.d("压缩实体的名称：", zipEntryName);
                if (zipEntryName.endsWith("kml") || zipEntryName.endsWith("kmz")) {                 
                    inputStream = zipFile.getInputStream(entry);
                    parseXmlWithDom4j(inputStream);
                }else if (zipEntryName.endsWith("png")) {
                    /*ByteArrayOutputStream byteArrayOut = new ByteArrayOutputStream();
                    byte[] b = new byte[512];
                    int readedByteSize = 0;
                    while ((readedByteSize = zipInputStream.read(b)) != -1) {
                        byteArrayOut.write(b, 0, readedByteSize);
                    }
                    byteArrayOut.flush();
                    byteArrayOut.close();
                    InputStream isBitmap = new ByteArrayInputStream(byteArrayOut.toByteArray());
                    Bitmap bitmap = BitmapFactory.decodeStream(isBitmap);
                    isBitmap.close();*/
                }
            }

            zipInputStream.close();
            inputStream.close();
        } catch (ZipException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        } catch (IOException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
    }
    public void parseXmlWithDom4j(InputStream input) throws Exception
    {
        SAXReader reader = new SAXReader();
        Document document = null;
        try {
            document = reader.read(input);
        } catch (DocumentException e) {
            // TODO: handle exception
            e.printStackTrace();
        }
        Element root = document.getRootElement();//获取doc.kml文件的根结点
        listNodes(root);    
    }
    //遍历当前节点下的全部节点  
    public void listNodes(Element node){  
        Log.d("当前结点的名称:", node.getName());
        //首先获取当前节点的全部属性节点  
       /* List list = node.attributes();  
        //遍历属性节点  
        for(Attribute attribute : list){  
            Log.d("属性", attribute.getName() +":" + attribute.getValue());  
        }  */
        //假设当前节点内容不为空，则输出
        if(!(node.getTextTrim().equals("")) && "description".equals(node.getName())){  
             //Log.d("当前结点内容：", node.getText());
             parseHtml(node.getText());
        }  
        //同一时候迭代当前节点以下的全部子节点  
        //使用递归  
        Iterator iterator = node.elementIterator();  
        while(iterator.hasNext()){  
            Element e = iterator.next();  
            listNodes(e);  
        }  
    } 
    public void parseHtml(String htmlData)
    {
        org.jsoup.nodes.Document document = Jsoup.parse(htmlData);
        Elements trs = document.select("table").select("tr");
        String trContent = "";
        String trContentSplit[] = null;
        String x = "";
        String y = "";
        String name = "";
        for (int i = 2; i < trs.size(); i++) {//在KML文件里的HTML文本中，共同拥有13个tr，每一个tr包括了一个属性，当中第二个tr包括了全部的属性，因此我们在处理时从第三个tr開始
            trContent = trs.get(i).text();          
            trContentSplit = trContent.split(" ");
            if ("name".equals(trContentSplit[0])) {
                name = trContentSplit[1];

            }
            if ("x".equals(trContentSplit[0]) || "X".equals(trContentSplit[0])) {
                x = trContentSplit[1].trim();           
            }
            if ("y".equals(trContentSplit[0]) || "Y".equals(trContentSplit[0])) {
                y = trContentSplit[1].trim();               
            }           

            /*Elements tds = elements.get(i).select("td");
            for (int j = 0; j < tds.size(); j++) {
                htmlContent = tds.get(j).text();
            }*/         
        }
        Log.d("X:", x);
        Log.d("Y:", y);
        Log.d("Name:", name);

    }
}

本文中使用了dom4j包来解析XML和jsoup包来解析HTML

转载于:https://www.cnblogs.com/llguanli/p/8675320.html