Java dxf转shp

非常抱歉，作为AI语言模型，我没有直接的能力进行Java程序设计和运行。但是，您可以使用Java库来实现dxf到shp的转换。以下是一些可能会对您有帮助的Java库和示例：

1. GeoTools - 一个用于处理地理空间数据的开源Java库，可以处理dxf和shp格式。它提供了很多示例代码和文档。

2. JTS Topology Suite - 一个用于处理地理空间数据的Java库，也可以处理dxf和shp格式。它提供了许多示例代码和文档。

3. GDAL - 一个用于处理各种地理空间数据格式的C++/Java库，支持dxf和shp格式。它还提供了Java接口和示例代码。

使用这些库，您可以编写Java代码来实现dxf到shp的转换。以下是一个基本的示例代码使用GeoTools库：

import org.geotools.data.*;
import org.geotools.data.simple.SimpleFeatureCollection;
import org.geotools.data.simple.SimpleFeatureIterator;
import org.geotools.data.simple.SimpleFeatureSource;
import org.geotools.feature.simple.SimpleFeatureBuilder;
import org.geotools.feature.simple.SimpleFeatureTypeBuilder;
import org.geotools.geojson.feature.FeatureJSON;
import org.geotools.geometry.jts.JTSFactoryFinder;
import org.locationtech.jts.geom.*;
import org.locationtech.jts.io.WKTReader;
import org.locationtech.jts.io.WKTWriter;
import org.opengis.feature.simple.*;
import org.opengis.feature.type.*;
import java.io.*;
import java.util.*;
import java.util.zip.*;
import org.w3c.dom.*;
import javax.xml.parsers.*;
import java.nio.charset.Charset;

public class DxfToShpConverter {
  private static GeometryFactory geometryFactory = JTSFactoryFinder.getGeometryFactory(null);

  public static void main(String[] args) {
    String dxfFileName = "input.dxf";
    String shpFileName = "output.shp";
    try {
      SimpleFeatureCollection features = getFeaturesFromDxf(dxfFileName);
      writeFeaturesToShp(features, shpFileName);
      System.out.println("Conversion completed successfully!");
    } catch (Exception e) {
      System.out.println("Error during conversion: " + e.getMessage());
    }
  }

  private static SimpleFeatureCollection getFeaturesFromDxf(String dxfFileName) throws Exception {
    SimpleFeatureType featureType = createFeatureType();
    SimpleFeatureBuilder featureBuilder = new SimpleFeatureBuilder(featureType);
    List<SimpleFeature> features = new ArrayList<SimpleFeature>();
    FileInputStream fis = new FileInputStream(dxfFileName);
    BufferedInputStream bis = new BufferedInputStream(fis);
    ZipInputStream zis = new ZipInputStream(bis);
    ZipEntry entry = zis.getNextEntry();
    while (entry != null) {
      String fileName = entry.getName();
      if (fileName.endsWith(".xml") && entry.getSize() > 0) {
        DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance();
        DocumentBuilder db = dbf.newDocumentBuilder();
        Document doc = db.parse(zis);
        Node node = doc.getElementsByTagName("Entities").item(0);
        NodeList nodeList = node.getChildNodes();
        for (int i = 0; i < nodeList.getLength(); i++) {
          Node childNode = nodeList.item(i);
          if (childNode.getNodeType() == Node.ELEMENT_NODE) {
            Element element = (Element) childNode;
            if (element.getNodeName().equals("Line")) {
              LineString lineString = createLineStringFromElement(element);
              featureBuilder.add(lineString);
              SimpleFeature feature = featureBuilder.buildFeature(null);
              features.add(feature);
            } else if (element.getNodeName().equals("Circle")) {
              Polygon polygon = createPolygonFromCircleElement(element);
              featureBuilder.add(polygon);
              SimpleFeature feature = featureBuilder.buildFeature(null);
              features.add(feature);
            } // add more cases for other entities
          }
        }
      }
      entry = zis.getNextEntry();
    }
    zis.close();
    SimpleFeatureCollection featureCollection = DataUtilities.collection(features);
    return featureCollection;
  }

  private static LineString createLineStringFromElement(Element element) {
    Coordinate[] coordinates = new Coordinate[2];
    String startX = element.getAttribute("StartX");
    String startY = element.getAttribute("StartY");
    String endX = element.getAttribute("EndX");
    String endY = element.getAttribute("EndY");
    coordinates[0] = new Coordinate(Double.parseDouble(startX), Double.parseDouble(startY));
    coordinates[1] = new Coordinate(Double.parseDouble(endX), Double.parseDouble(endY));
    LineString lineString = geometryFactory.createLineString(coordinates);
    return lineString;
  }

  private static Polygon createPolygonFromCircleElement(Element element) {
    String centerX = element.getAttribute("CenterX");
    String centerY = element.getAttribute("CenterY");
    String radius = element.getAttribute("Radius");
    Coordinate centerCoordinate = new Coordinate(Double.parseDouble(centerX), Double.parseDouble(centerY));
    double radiusValue = Double.parseDouble(radius);
    Polygon circlePolygon = createCirclePolygon(centerCoordinate, radiusValue);
    return circlePolygon;
  }

  private static Polygon createCirclePolygon(Coordinate center, double radius) {
    int numPoints = 32;
    Coordinate[] coordinates = new Coordinate[numPoints + 1];
    for (int i = 0; i < numPoints; i++) {
      double angle = ((double) i / (double) numPoints) * Math.PI * 2.0;
      double x = radius * Math.cos(angle) + center.x;
      double y = radius * Math.sin(angle) + center.y;
      coordinates[i] = new Coordinate(x, y);
    }
    coordinates[numPoints] = coordinates[0];
    LinearRing ring = geometryFactory.createLinearRing(coordinates);
    Polygon polygon = geometryFactory.createPolygon(ring, null);
    return polygon;
  }

  private static SimpleFeatureType createFeatureType() {
    SimpleFeatureTypeBuilder builder = new SimpleFeatureTypeBuilder();
    builder.setName("Feature");
    builder.add("geometry", Geometry.class);
    SimpleFeatureType featureType = builder.buildFeatureType();
    return featureType;
  }

  private static void writeFeaturesToShp(SimpleFeatureCollection features, String shpFileName) throws IOException {
    File shapefile = new File(shpFileName);
    Map<String, Serializable> connectParams = new HashMap<String, Serializable>();
    connectParams.put("url", shapefile.toURI().toURL());
    connectParams.put("create spatial index", Boolean.TRUE);
    DataStoreFactorySpi factory = new ShapefileDataStoreFactory();
    DataStore dataStore = factory.createNewDataStore(connectParams);
    SimpleFeatureType featureType = createFeatureType();
    dataStore.createSchema(featureType);
    String typeName = dataStore.getTypeNames()[0];
    SimpleFeatureSource featureSource = dataStore.getFeatureSource(typeName);
    if (featureSource instanceof SimpleFeatureStore) {
      SimpleFeatureStore featureStore = (SimpleFeatureStore) featureSource;
      featureStore.addFeatures(features);
    }
    dataStore.dispose();
  }
}

请根据您的具体需求进行修改和裁剪，特别是在创建地理空间对象时使用不同的代码。