8 changed files with 439 additions and 59 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 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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* 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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// 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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if (currentPlacemark != null) { |
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placemarks.add(currentPlacemark); |
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} |
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currentPlacemark = new Placemark(); |
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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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currentPlacemark.setCoordinates(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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if (currentPlacemark != null) { |
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placemarks.add(currentPlacemark); |
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} |
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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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/** |
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* 解析ovkmz文件 |
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*/ |
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public class OvkmzParser { |
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} |
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