22 changed files with 810 additions and 96 deletions
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package org.dromara.system.domain.kmz; |
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import lombok.Data; |
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import java.util.Map; |
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@Data |
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public class KmzResult { |
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private String name; |
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private Map<String, String> attributes; |
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private String wkt; |
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public KmzResult(String name, Map<String, String> attributes, String wkt) { |
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this.name = name; |
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this.attributes = attributes; |
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this.wkt = wkt; |
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} |
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public KmzResult() { |
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} |
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} |
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package org.dromara.system.domain.kmz; |
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import lombok.Data; |
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import java.util.Map; |
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@Data |
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public class Placemark { |
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private String name; |
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private String coordinates; |
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private Map<String, String> attributes; |
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} |
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package org.dromara.system.utils; |
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import cn.hutool.core.util.ObjectUtil; |
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import java.io.*; |
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import java.util.*; |
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/** |
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* KML文件解析器 |
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* KML是Google Earth使用的标记语言格式 |
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*/ |
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public class KmlParserUtil { |
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/** |
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* 从KML内容中提取所有Placemark数据 |
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* |
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* @param kmlContent KML内容 |
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* @return 包含name和coordinates的Map列表 |
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*/ |
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public static List<Map<String, String>> extractPlacemarks(String kmlContent) { |
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List<Map<String, String>> placemarkList = new ArrayList<>(); |
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int startIndex = 0; |
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while (true) { |
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// 查找Placemark开始标签
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int startPlacemark = kmlContent.indexOf("<Placemark>", startIndex); |
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if (startPlacemark == -1) { |
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break; |
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} |
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// 查找Placemark结束标签
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int endPlacemark = kmlContent.indexOf("</Placemark>", startPlacemark); |
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if (endPlacemark == -1) { |
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break; |
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} |
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// 提取当前Placemark的内容
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String placemarkContent = kmlContent.substring(startPlacemark, endPlacemark + "</Placemark>".length()); |
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// 提取name
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String name = ""; |
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int nameStart = placemarkContent.indexOf("<name>"); |
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int nameEnd = placemarkContent.indexOf("</name>"); |
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if (nameStart != -1 && nameEnd != -1) { |
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name = placemarkContent.substring(nameStart + "<name>".length(), nameEnd).trim(); |
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} |
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// 提取coordinates
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String coordinates = ""; |
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int coordStart = placemarkContent.indexOf("<coordinates>"); |
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int coordEnd = placemarkContent.indexOf("</coordinates>"); |
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if (coordStart != -1 && coordEnd != -1) { |
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coordinates = placemarkContent.substring(coordStart + "<coordinates>".length(), coordEnd).trim(); |
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} |
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//提取<Data name ="name">
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if (ObjectUtil.isEmpty(name)){ |
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int dataStart = placemarkContent.indexOf("Data name =\"name\""); |
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if (dataStart != -1) { |
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int valueStart = placemarkContent.indexOf("<value>", dataStart); |
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int valueEnd = placemarkContent.indexOf("</value>", valueStart); |
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if (valueStart != -1 && valueEnd != -1) { |
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name = placemarkContent.substring(valueStart + "<value>".length(), valueEnd).trim(); |
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} |
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} |
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} |
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// 创建Map并添加到列表
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Map<String, String> placemarkMap = new HashMap<>(); |
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placemarkMap.put("O_NAME", name); |
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String wkt = convertToWKT(coordinates); |
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placemarkMap.put("the_geom", wkt); |
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placemarkList.add(placemarkMap); |
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// 更新搜索起始位置
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startIndex = endPlacemark + "</Placemark>".length(); |
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} |
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return placemarkList; |
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} |
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/** |
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* 将坐标字符串转换为WKT（Well-Known Text）格式 |
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* |
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* @param coordinates 坐标字符串 |
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* @return WKT格式的字符串 |
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*/ |
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public static String convertToWKT(String coordinates) { |
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if (coordinates == null || coordinates.trim().isEmpty()) { |
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return ""; |
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} |
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// 构建WKT格式的多边形
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StringBuilder wkt = new StringBuilder("POLYGON(("); |
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String[] coordPairs = coordinates.trim().split("\\s+"); |
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// 处理每个坐标对
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for (int i = 0; i < coordPairs.length; i++) { |
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String[] coords = coordPairs[i].split(","); |
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if (coords.length >= 2) { |
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wkt.append(coords[0]).append(" ").append(coords[1]); |
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if (i < coordPairs.length - 1) { |
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wkt.append(", "); |
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} |
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} |
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} |
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wkt.append("))"); |
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StringBuffer polygonSb = new StringBuffer("GEOMETRYCOLLECTION("); |
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polygonSb.append(wkt); |
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polygonSb.append(")"); |
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return polygonSb.toString(); |
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} |
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/** |
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* 解析KML文件的主方法 |
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* |
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* @param inputStream KML文件的输入流 |
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* @return 包含name和coordinates的Map列表 |
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* @throws IOException 如果文件读取或处理过程中发生错误 |
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*/ |
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public static List<Map<String, String>> parseKml(InputStream inputStream) throws IOException { |
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try (BufferedReader reader = new BufferedReader(new InputStreamReader(inputStream))) { |
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StringBuilder kmlContent = new StringBuilder(); |
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String line; |
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while ((line = reader.readLine()) != null) { |
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kmlContent.append(line).append("\n"); |
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} |
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return extractPlacemarks(kmlContent.toString()); |
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} |
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} |
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} |
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@ -0,0 +1,262 @@ |
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package org.dromara.system.utils; |
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import cn.hutool.core.util.ObjectUtil; |
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import org.dromara.system.domain.kmz.KmzResult; |
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import org.dromara.system.domain.kmz.Placemark; |
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import java.io.*; |
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import java.nio.file.*; |
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import java.util.*; |
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import java.util.zip.ZipEntry; |
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import java.util.zip.ZipInputStream; |
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/** |
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* KMZ文件解析器 |
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* KMZ是Google Earth使用的压缩格式，包含KML文件和其他资源 |
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*/ |
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public class KmzParserUtil { |
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/** |
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* 解析KMZ文件的主方法 |
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* |
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* @param inputStream KMZ文件的路径 |
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* @return 解析结果列表 |
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* @throws IOException 如果文件读取或处理过程中发生错误 |
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*/ |
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public static List<KmzResult> parseKmz(InputStream inputStream) throws IOException { |
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// 存储解析出的地标信息
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List<Placemark> placemarks = new ArrayList<>(); |
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// 存储最终结果
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List<KmzResult> results = new ArrayList<>(); |
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// 创建临时目录用于解压KMZ文件
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Path tempDir = Files.createTempDirectory("kmz_parser_"); |
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try { |
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// 将KMZ文件解压到临时目录
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extractKmz(inputStream, tempDir.toString()); |
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// 遍历临时目录，查找并解析所有KML文件
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Files.walk(tempDir) |
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.filter(path -> path.toString().endsWith(".kml")) |
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.forEach(path -> { |
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try { |
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String kmlContent = new String(Files.readAllBytes(path)); |
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parseKmlContent(kmlContent, placemarks); |
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} catch (IOException e) { |
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e.printStackTrace(); |
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} |
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}); |
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// 将解析出的地标信息转换为最终结果格式
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for (Placemark placemark : placemarks) { |
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String wkt = convertToWKT(placemark.getCoordinates()); |
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results.add(new KmzResult(placemark.getName(), placemark.getAttributes(), wkt)); |
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} |
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} finally { |
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// 清理临时目录
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deleteDirectory(tempDir); |
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} |
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return results; |
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} |
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/** |
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* 解压KMZ文件到指定目录 |
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* |
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* @param inputStream KMZ文件路径 |
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* @param outputDir 输出目录 |
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*/ |
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private static void extractKmz(InputStream inputStream, String outputDir) throws IOException { |
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try (ZipInputStream zis = new ZipInputStream(inputStream)) { |
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ZipEntry entry; |
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while ((entry = zis.getNextEntry()) != null) { |
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Path outputPath = Paths.get(outputDir, entry.getName()); |
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// 创建必要的父目录
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Files.createDirectories(outputPath.getParent()); |
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// 跳过目录条目
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if (entry.isDirectory()) { |
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continue; |
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} |
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// 解压文件内容
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try (OutputStream out = Files.newOutputStream(outputPath)) { |
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byte[] buffer = new byte[1024]; |
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int len; |
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while ((len = zis.read(buffer)) > 0) { |
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out.write(buffer, 0, len); |
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} |
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} |
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} |
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} |
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} |
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/** |
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* 递归删除目录及其内容 |
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* |
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* @param directory 要删除的目录 |
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*/ |
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private static void deleteDirectory(Path directory) throws IOException { |
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Files.walk(directory) |
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.sorted(Comparator.reverseOrder()) |
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.forEach(path -> { |
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try { |
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Files.delete(path); |
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} catch (IOException e) { |
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e.printStackTrace(); |
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} |
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}); |
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} |
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/** |
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* 处理当前Placemark的所有坐标，为每个坐标创建新的Placemark对象 |
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* |
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* @param currentPlacemark 当前Placemark对象 |
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* @param currentCoordinates 当前Placemark的所有坐标 |
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* @param placemarks 存储所有Placemark的列表 |
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*/ |
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private static void processCurrentPlacemarkCoordinates(Placemark currentPlacemark, List<String> currentCoordinates, List<Placemark> placemarks) { |
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if (currentPlacemark != null && !currentCoordinates.isEmpty()) { |
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for (String coords : currentCoordinates) { |
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Placemark newPlacemark = new Placemark(); |
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newPlacemark.setName(currentPlacemark.getName()); |
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if (ObjectUtil.isNotEmpty(currentPlacemark.getAttributes())){ |
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newPlacemark.setAttributes(new HashMap<>(currentPlacemark.getAttributes())); |
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} |
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newPlacemark.setCoordinates(coords); |
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placemarks.add(newPlacemark); |
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} |
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} |
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} |
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/** |
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* 解析KML文件内容 |
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* |
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* @param kmlContent KML文件内容 |
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* @param placemarks 存储解析出的地标信息 |
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*/ |
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private static void parseKmlContent(String kmlContent, List<Placemark> placemarks) { |
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String[] lines = kmlContent.split("\n"); |
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Placemark currentPlacemark = null; |
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boolean inDescription = false; |
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StringBuilder descriptionContent = new StringBuilder(); |
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List<String> currentCoordinates = new ArrayList<>(); |
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// 添加调试日志
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System.out.println("开始解析KML内容，总行数: " + lines.length); |
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for (String line : lines) { |
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line = line.trim(); |
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if (line.startsWith("<Placemark>")) { |
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// 处理当前Placemark的所有坐标
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processCurrentPlacemarkCoordinates(currentPlacemark, currentCoordinates, placemarks); |
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currentPlacemark = new Placemark(); |
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currentCoordinates = new ArrayList<>(); |
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System.out.println("发现新的Placemark"); |
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} else if (line.startsWith("<name>")) { |
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if (currentPlacemark != null) { |
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String name = line.replace("<name>", "").replace("</name>", "").trim(); |
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currentPlacemark.setName(name); |
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System.out.println("解析到名称: " + name); |
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} |
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} else if (line.startsWith("<description>")) { |
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inDescription = true; |
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descriptionContent = new StringBuilder(); |
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System.out.println("开始解析描述"); |
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} else if (line.endsWith("</description>")) { |
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inDescription = false; |
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if (currentPlacemark != null) { |
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String desc = descriptionContent.toString(); |
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System.out.println("描述内容: " + desc); |
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parseDescription(desc, currentPlacemark); |
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} |
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} else if (inDescription) { |
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descriptionContent.append(line).append("\n"); |
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} else if (line.startsWith("<coordinates>")) { |
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if (currentPlacemark != null) { |
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String coords = line.replace("<coordinates>", "").replace("</coordinates>", "").trim(); |
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currentCoordinates.add(coords); |
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System.out.println("解析到坐标: " + coords); |
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} |
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} |
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} |
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// 处理最后一个Placemark
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processCurrentPlacemarkCoordinates(currentPlacemark, currentCoordinates, placemarks); |
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// 打印解析结果
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System.out.println("解析完成，共找到 " + placemarks.size() + " 个地标"); |
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for (Placemark p : placemarks) { |
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System.out.println("地标信息:"); |
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System.out.println(" 名称: " + p.getName()); |
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System.out.println(" 属性: " + p.getAttributes()); |
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System.out.println(" 坐标: " + p.getCoordinates()); |
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} |
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} |
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/** |
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* 解析描述内容，提取属性信息 |
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* |
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* @param description 描述内容 |
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* @param placemark 地标对象 |
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*/ |
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private static void parseDescription(String description, Placemark placemark) { |
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System.out.println("开始解析描述内容: " + description); |
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String[] lines = description.split("\n"); |
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Map<String, String> attributes = new HashMap<>(); |
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for (String line : lines) { |
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line = line.trim(); |
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if (line.contains("\":")) { |
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String[] parts = line.split("\":"); |
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if (parts.length == 2) { |
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String key = parts[0].replace("\"", "").trim(); |
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String value = parts[1].replace("\"", "").trim(); |
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attributes.put(key, value); |
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System.out.println("解析到属性 - 键: " + key + ", 值: " + value); |
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} |
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} |
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} |
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placemark.setAttributes(attributes); |
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} |
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/** |
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* 将坐标字符串转换为WKT（Well-Known Text）格式 |
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* |
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* @param coordinates 坐标字符串 |
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* @return WKT格式的字符串 |
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*/ |
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public static String convertToWKT(String coordinates) { |
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if (coordinates == null || coordinates.trim().isEmpty()) { |
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return ""; |
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} |
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// 构建WKT格式的多边形
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StringBuilder wkt = new StringBuilder("POLYGON(("); |
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String[] coordPairs = coordinates.trim().split("\\s+"); |
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// 处理每个坐标对
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for (int i = 0; i < coordPairs.length; i++) { |
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String[] coords = coordPairs[i].split(","); |
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if (coords.length >= 2) { |
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wkt.append(coords[0]).append(" ").append(coords[1]); |
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if (i < coordPairs.length - 1) { |
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wkt.append(", "); |
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} |
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} |
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} |
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wkt.append("))"); |
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StringBuffer polygonSb = new StringBuffer("GEOMETRYCOLLECTION("); |
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polygonSb.append(wkt); |
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polygonSb.append(")"); |
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return polygonSb.toString(); |
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} |
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} |
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@ -1,11 +0,0 @@ |
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package org.dromara.system.utils; |
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/** |
|
||||
* 解析ovkmz文件 |
|
||||
*/ |
|
||||
public class OvkmzParser { |
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||||
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||||
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||||
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|
||||
} |
|
||||
Loading…
Reference in new issue