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java使用GeoTools读取shp文件并画图的操作代码

转载 作者：qq735679552 更新时间：2022-09-29 22:32:09 38 4
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这篇CFSDN的博客文章java使用GeoTools读取shp文件并画图的操作代码由作者收集整理，如果你对这篇文章有兴趣，记得点赞哟.

GeoTools是ArcGis地图与java对象的桥梁，恰如jdbc之于oracle与java。 shp文件本身是存有地理对象边界坐标、对象中心城市及城市编号的多多边形字符串。 需要使用的依赖如下 。

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<!-- 添加GeoTools依赖 -->
        <dependency>
            <groupId>org.geotools</groupId>
            <artifactId>gt-shapefile</artifactId>
            <version>${geotools.version}</version>
        </dependency>
 
        <dependency>
            <groupId>org.geotools</groupId>
            <artifactId>gt-swing</artifactId>
            <version>${geotools.version}</version>
        </dependency>
       
        <dependency>
            <groupId>dom4j</groupId>
            <artifactId>dom4j</artifactId>
            <version> 1.6 . 1 </version>
        </dependency>
        <dependency>
            <groupId>com.alibaba</groupId>
            <artifactId>fastjson</artifactId>
            <version> 1.2 . 47 </version>
        </dependency>

对象:

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public class CutProperty {
 
     private String province;
     private int x;
     private int y;
 
     /**
      * 图片宽
      * */
     private int width;
 
     /**
      * 图片高
      * */
     private int height;
 
     /**
      * 画图时线条粗细
      * */
     private float weight;
 
     /**
      * 地图坐标右边界
      * */
     private int rightborder;
 
     /**
      * 地图坐标放大倍数
      * */
     private int bei;
 
     /**
      * 文字大小
      * */
     private int stringsize;

来自@author yukun24@126.com的工具类，读取shp文件:

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package com.gwhn.geotools;
 
import org.geotools.data.FeatureWriter;
import org.geotools.data.FileDataStoreFactorySpi;
import org.geotools.data.Transaction;
import org.geotools.data.shapefile.ShapefileDataStore;
import org.geotools.data.shapefile.ShapefileDataStoreFactory;
import org.geotools.data.simple.SimpleFeatureIterator;
import org.geotools.data.simple.SimpleFeatureSource;
import org.geotools.feature.FeatureCollection;
import org.geotools.feature.simple.SimpleFeatureTypeBuilder;
import org.geotools.referencing.crs.DefaultGeographicCRS;
import org.junit.Test;
import org.locationtech.jts.geom.*;
import org.opengis.feature.Property;
import org.opengis.feature.simple.SimpleFeature;
import org.opengis.feature.simple.SimpleFeatureType;
 
import java.io.File;
import java.io.Serializable;
import java.nio.charset.Charset;
import java.util.*;
 
public class ShapeUtil {
 
     //读shp文件【几何信息+属性信息】
     public List<Property> SHPRead(String path) throws Exception {
         List<Property> propertyList = new ArrayList<>();
         //基于上面新建的shapfile文件，进行读取
 
         //构建shapefile数据存储的实例
         ShapefileDataStoreFactory dataStoreFactory = new ShapefileDataStoreFactory();
 
         //基于路径构建文件对象
         File file = new File(path);
 
         //构建一个已存在的shapfile数据源
         //ShapefileDataStore:数据存储实现，允许从Shapefiles读取和写入
         ShapefileDataStore ds = (ShapefileDataStore) dataStoreFactory.createDataStore(file.toURI().toURL());
 
         //设置编码，防止中文读取乱码
         ds.setCharset(Charset.forName( "UTF-8" ));
 
         //getFeatureSource():ContentFeatureSource
         //这个特性是由 FeatureCollection提供的操作完成的。单独的特征记忆实现由子类提供:
         //SimpleFeatureSource特征资源明确地使用FeatureCollection【集合】，可迭代
         SimpleFeatureSource featureSource = ds.getFeatureSource();
 
         //getFeatures():以FeatureCollection的形式检索所有特性。
         //一个用于处理FeatureCollection的实用工具类。提供一个获取FeatureCollection实例的机制
         FeatureCollection<SimpleFeatureType, SimpleFeature> result = featureSource.getFeatures();
 
         System.out.println( "几何对象总共有：" + result.size());
         //features():返回一个FeatureIterator迭代器
         SimpleFeatureIterator it = (SimpleFeatureIterator) result.features();
 
         while (it.hasNext()) {
             SimpleFeature feature = it.next();
             //迭代属性【属性我们可以理解为一个几何对象的属性节点，也就是对一个几何图形的描述字段】
             Iterator<Property> ip = feature.getProperties().iterator();
//            System.out.println("========================");
             //再来个while
             while (ip.hasNext()) {
                 Property pro = ip.next();
//                System.out.println(pro.getName()+" = "+pro.getValue());
                 propertyList.add(pro);
             } //end 属性迭代
         }
         it.close();
         return propertyList;
     }
   
}

来自@author yukun24@126.com的工具类，此处用来将shp中获取的字符串转化为多多边形对象MultiPolygon 。

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package com.gwhn.geotools;
 
 
import org.locationtech.jts.geom.*;
import org.locationtech.jts.io.ParseException;
import org.locationtech.jts.io.WKTReader;
 
import java.util.List;
 
/**
  * 几何对象构建器
  *
  * @author yukun24@126.com
  * @version V1.0.1
  * @blob http://blog.csdn.net/appleyk
  * @date 2017年12月8日10:38:49
  */
 
//单例模式
public class GeometryCreator {
 
     public static GeometryCreator geometryCreator = null ;
 
     private GeometryFactory geometryFactory = new GeometryFactory();
 
     public GeometryCreator() {
     }
 
     /**
      * 返回本类的唯一实例
      *
      * @return
      */
     public static GeometryCreator getInstance() {
         if (geometryCreator == null ) {
             return new GeometryCreator();
         }
         return geometryCreator;
     }
 
 
     /**
      * 1.构建点
      */
 
     /**
      * 1.1根据X，Y坐标构建一个几何对象： 点 【Point】
      *
      * @param x
      * @param y
      * @return
      */
     public Point createPoint( double x, double y) {
         Coordinate coord = new Coordinate(x, y);
         Point point = geometryFactory.createPoint(coord);
         return point;
     }
 
     /**
      * 1.2根据几何对象的WKT描述【String】创建几何对象： 点 【Point】
      *
      * @return
      * @throws ParseException
      */
     public Point createPointByWKT(String PointWKT) throws ParseException {
         WKTReader reader = new WKTReader(geometryFactory);
         Point point = (Point) reader.read(PointWKT);
         return point;
     }
 
     /**
      * 1.3根据几何对象的WKT描述【String】创建几何对象：多点 【MultiPoint】
      *
      * @return
      * @throws ParseException
      */
     public MultiPoint createMulPointByWKT(String MPointWKT) throws ParseException {
         WKTReader reader = new WKTReader(geometryFactory);
         MultiPoint mpoint = (MultiPoint) reader.read(MPointWKT);
         return mpoint;
     }
 
 
     /**
      * 2.构建线
      */
 
 
     /**
      * 2.1根据两点 创建几何对象：线 【LineString】
      *
      * @param ax
      * @param ay
      * @param bx
      * @param by
      * @return
      */
     public LineString createLine( double ax, double ay, double bx, double by) {
         Coordinate[] coords = new Coordinate[]{ new Coordinate(ax, ay), new Coordinate(bx, by)};
         LineString line = geometryFactory.createLineString(coords);
         return line;
     }
 
     /**
      * 2.2根据线的WKT描述创建几何对象：线 【LineString】
      *
      * @param LineStringWKT
      * @return
      * @throws ParseException
      */
     public LineString createLineByWKT(String LineStringWKT) throws ParseException {
         WKTReader reader = new WKTReader(geometryFactory);
         LineString line = (LineString) reader.read( "LINESTRING(0 0, 2 0)" );
         return line;
     }
 
     /**
      * 2.3根据点组合的线数组，创建几何对象：多线 【MultiLineString】
      *
      * @param list
      * @return
      */
     public MultiLineString createMLine(List<Coordinate[]> list) {
 
         MultiLineString ms = null ;
 
 
         if (list == null ) {
             return ms;
         }
 
         LineString[] lineStrings = new LineString[list.size()];
 
 
//      Coordinate[] coords1  = new Coordinate[] {new Coordinate(2, 2), new Coordinate(2, 2)};   
//      LineString line1 = geometryFactory.createLineString(coords1);   
//      
//      Coordinate[] coords2  = new Coordinate[] {new Coordinate(2, 2), new Coordinate(2, 2)};   
//      LineString line2 = geometryFactory.createLineString(coords2);   
 
         int i = 0 ;
         for (Coordinate[] coordinates : list) {
             lineStrings[i] = geometryFactory.createLineString(coordinates);
         }
 
         ms = geometryFactory.createMultiLineString(lineStrings);
 
         return ms;
     }
 
 
     /**
      * 2.4根据几何对象的WKT描述【String】创建几何对象 ： 多线【MultiLineString】
      *
      * @param MLineStringWKT
      * @return
      * @throws ParseException
      */
     public MultiLineString createMLineByWKT(String MLineStringWKT) throws ParseException {
         WKTReader reader = new WKTReader(geometryFactory);
         MultiLineString line = (MultiLineString) reader.read(MLineStringWKT);
         return line;
     }
 
 
     /**
      * 3.构建多边形
      */
 
 
     /**
      * 3.1 根据几何对象的WKT描述【String】创建几何对象：多边形 【Polygon】
      *
      * @param PolygonWKT
      * @return
      * @throws ParseException
      */
     public Polygon createPolygonByWKT(String PolygonWKT) throws ParseException {
         WKTReader reader = new WKTReader(geometryFactory);
         Polygon polygon = (Polygon) reader.read(PolygonWKT);
         return polygon;
     }
 
     /**
      * 3.2 根据几何对象的WKT描述【String】创建几何对象： 多多边形 【MultiPolygon】
      *
      * @param MPolygonWKT
      * @return
      * @throws ParseException
      */
     public MultiPolygon createMulPolygonByWKT(String MPolygonWKT) throws ParseException {
         WKTReader reader = new WKTReader(geometryFactory);
         MultiPolygon mpolygon = (MultiPolygon) reader.read(MPolygonWKT);
         return mpolygon;
     }
 
     /**
      * 根据多边形数组 进行多多边形的创建
      *
      * @param polygons
      * @return
      * @throws ParseException
      */
     public MultiPolygon createMulPolygonByPolygon(Polygon[] polygons) throws ParseException {
 
         return geometryFactory.createMultiPolygon(polygons);
     }
 
     /**
      * 4.构建几何对象集合
      */
 
 
     /**
      * 4.1 根据几何对象数组，创建几何对象集合：【GeometryCollection】
      *
      * @return
      * @throws ParseException
      */
     public GeometryCollection createGeoCollect(Geometry[] geoArray) throws ParseException {
//            LineString line = createLine(125.12,25.4,85.63,99.99);   
//            Polygon poly    =  createPolygonByWKT("POLYGON((20 10, 30 0, 40 10, 30 20, 20 10))");   
//            Geometry g1     = geometryFactory.createGeometry(line);   
//            Geometry g2     = geometryFactory.createGeometry(poly);   
//            Geometry[] geoArray = new Geometry[]{g1,g2};   
         GeometryCollection gc = geometryFactory.createGeometryCollection(geoArray);
         return gc;
     }
 
 
     /**
      * 5.构建圆
      */
 
     /**
      * 5.1 根据圆点以及半径创建几何对象：特殊的多边形--圆 【Polygon】
      *
      * @param x
      * @param y
      * @param RADIUS
      * @return
      */
     public Polygon createCircle( double x, double y, final double RADIUS) {
 
         final int SIDES = 32 ; //圆上面的点个数
 
         Coordinate coords[] = new Coordinate[SIDES + 1 ];
         for ( int i = 0 ; i < SIDES; i++) {
             double angle = (( double ) i / ( double ) SIDES) * Math.PI * 2.0 ;
             double dx = Math.cos(angle) * RADIUS;
             double dy = Math.sin(angle) * RADIUS;
             coords[i] = new Coordinate(( double ) x + dx, ( double ) y + dy);
         }
         coords[SIDES] = coords[ 0 ];
         //线性环
         LinearRing ring = geometryFactory.createLinearRing(coords);
         Polygon polygon = geometryFactory.createPolygon(ring, null );
         return polygon;
     }
 
 
     /**
      *  6.构建环
      */
 
     /**
      * 6.1 根据WKT创建环
      *
      * @param ringWKT
      * @return
      * @throws ParseException
      */
     public LinearRing createLinearRingByWKT(String ringWKT) throws ParseException {
         WKTReader reader = new WKTReader(geometryFactory);
         LinearRing ring = (LinearRing) reader.read(ringWKT);
         return ring;
     }
 
}

有xml如下:

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<?xml version= "1.0" encoding= "UTF-8" ?>
<application>
     <!-- 网络配置-->
     <module name= "Http" >
 
         <group name= "FileExport" >
             <configValue key= "ShapePath" >D:/testspace/spd/rain/</configValue>
             <configValue key= "ProvinceShapePath" >D:/testspace/spd/Provinces_shp/</configValue>
             <configValue key= "ProvincePath" >D:\testspace\spd\output\</configValue>
             <configValue key= "ExportPath" >D:\testspace\spd\Export\</configValue>
             <configValue key= "PropertyPath" >D:\testspace\spd\Export\</configValue>
         </group>
        
     </module>
</application>

xml读取以获取shp文件位置和图片输出位置:

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package com.gwhn.Util;
 
import org.dom4j.Attribute;
import org.dom4j.Document;
import org.dom4j.Element;
import org.dom4j.Text;
import org.dom4j.io.SAXReader;
 
import java.io.File;
import java.util.Iterator;
 
/**
  * @author banxian
  * @date 2021/1/21 15:56
  */
public class YereeXmlContext {
 
     /**
      * 根据一二三级字节点的key，迭代到第三级节点根据三级key获取值
      * <!-- 网络配置-->
      * <module name="Http">
      *    <group name="FileUpload">
      *        <configValue key="TempDir">D:\\temp\\upload\\</configValue>
      *    </group>
      * </module>
      *
      * @param key1
      * @param key2
      * @param key3
      * @return
      * @author banxian
      * @date: 2021/1/21 19:51
      */
     public String getXmlValue(String key1, String key2, String key3) {
         try {
             //1.创建Reader对象
             SAXReader reader = new SAXReader();
             //2.加载xml
             String directoryPath = Thread.currentThread().getContextClassLoader().getResource( "config.xml" ).getPath(); //获取项目根目录
             Document document = reader.read( new File(directoryPath));
             //3.获取根节点
             Element rootElement = document.getRootElement();
             Element moduleElement = getTargetElement(key1, rootElement);
             Element groupElement = getTargetElement(key2, moduleElement);
             Element configElement = getTargetElement(key3, groupElement);
             Attribute attribute = (Attribute) configElement.attributes().get( 0 );
             String key = attribute.getValue();
             Text text3 = (Text) configElement.content().get( 0 );
             String value = text3.getText();
             return value;
         } catch (Exception e) {
             e.printStackTrace();
         }
         return null ;
     }
 
     /**
      * 获取和targetKey匹配的一个子节点
      *
      * @param targetKey
      * @param parentElement
      * @return
      * @author banxian
      * @date: 2021/1/21 19:53
      */
     public Element getTargetElement(String targetKey, Element parentElement) {
         Iterator iterator = parentElement.elementIterator();
         Element childElement = null ;
         while (iterator.hasNext()) {
             Element element = (Element) iterator.next();
             Attribute attribute = (Attribute) element.attributes().get( 0 );
             String key = attribute.getValue();
             if (key.equals(targetKey) || key == targetKey) {
                 childElement = element;
                 break ;
             }
         }
         return childElement;
     }
}

核心类：用多边形绘图 。

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package com.gwhn.Util;
 
import com.gwhn.entity.CutProperty;
import org.locationtech.jts.geom.Coordinate;
import org.locationtech.jts.geom.Geometry;
import org.locationtech.jts.geom.MultiPolygon;
 
import java.awt.*;
import java.awt.image.BufferedImage;
import java.util.List;
 
/**
  * @author banxian
  * @date 2021/6/28 12:37
  */
public class PolygonUtil {
 
     ImageUtils imageUtils = new ImageUtils();
     TxtUtil txtUtil = new TxtUtil();
 
     /**
      * 根据多多边形画图
      * @param path
      * @param cutProperty
      * @param multiPolygonList
      * @return
      * @author banxian
      * @date: 2021/6/30 15:31
      */
     public void graphicsByMultiPolygon(String path, List<MultiPolygon> multiPolygonList, CutProperty cutProperty) {
         try {
             int imageWidth = cutProperty.getWidth(); // 图片的宽度
             int imageHeight = cutProperty.getHeight(); // 图片的高度
             BufferedImage image = new BufferedImage(imageWidth, imageHeight, BufferedImage.TYPE_INT_RGB);
             Graphics2D graphics = (Graphics2D) image.getGraphics();
             graphics.setColor(Color.white);
             graphics.fillRect( 0 , 0 , imageWidth, imageHeight);
             graphics.setColor(Color.black);
             int m = cutProperty.getBei() / 100 ;
             graphics.setStroke( new BasicStroke(cutProperty.getWeight() * m)); //线条粗细
             Font font = new Font( "宋体" , Font.BOLD, 1200 );
             graphics.setFont(font);
             graphics.drawString(cutProperty.getProvince(),  12500 , 1500 );
             for (MultiPolygon multiPolygon : multiPolygonList) {
                 int num = multiPolygon.getNumGeometries();
                 for ( int i = 0 ; i < num; i++) {
                     Geometry geometry = multiPolygon.getGeometryN(i);
                     drawPolygon(geometry, cutProperty, graphics);
                 }
             }
             imageUtils.createImage(path, image);
             System.out.println(path + ":" + font.getSize());
         } catch (
                 Exception e) {
             e.printStackTrace();
         }
 
     }
 
     /**
      * 画出一个多边形
      * @param geometry
      * @param cutProperty
      * @param graphics2D
      * @return
      * @author banxian
      * @date: 2021/6/28 12:37
      */
     public void drawPolygon(Geometry geometry, CutProperty cutProperty, Graphics2D graphics2D) {
         int m = cutProperty.getBei() / 100 ;
         Double xtemp = Double.valueOf(cutProperty.getX() * m);
         Double ytemp = Double.valueOf(cutProperty.getY() * m);
 
         //处理飞地
         if (geometry.toString().contains( ")," )) {
             String geoStr = geometry.toString();
             String tempStr = geoStr.substring( 9 , geoStr.length() - 1 ) + "," ;
             while (tempStr.contains( ")," )) {
                 String temp = tempStr.substring( 0 , tempStr.indexOf( ")," ) + 2 );
                 tempStr = tempStr.substring(temp.length()).trim();
                 Polygon polygon = txtUtil.getPolygonByStr(temp,cutProperty);
                 graphics2D.drawPolygon(polygon);
             }
         } else {
             Coordinate[] coordinates = geometry.getCoordinates();
             Polygon polygon = new Polygon();
             Double x, y;
             for ( int j = 0 ; j < coordinates.length; j++) {
                 Coordinate coordinate = coordinates[j];
                 x = coordinate.getX() * cutProperty.getBei() - xtemp;
                 y = cutProperty.getRightborder() * m - coordinate.getY() * cutProperty.getBei() - ytemp;
                 polygon.addPoint(x.intValue(), y.intValue());
             }
             graphics2D.drawPolygon(polygon);
         }
     }
}

工具类：处理特殊的边界，一般由飞地、岛屿组成 。

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package com.gwhn.Util;
 
import com.alibaba.fastjson.JSON;
import com.alibaba.fastjson.JSONArray;
import com.alibaba.fastjson.JSONObject;
import com.gwhn.entity.CutProperty;
 
import java.awt.*;
import java.io.*;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
 
/**
  * @author banxian
  * @date 2021/5/10 15:57
  */
public class TxtUtil {
 
     public Polygon getPolygonByStr(String polygonStr,CutProperty cutProperty) {
         polygonStr = polygonStr.substring( 1 , polygonStr.length() - 2 ) + "," ;
         List<String> polygonStrList = new ArrayList<>();
         while (polygonStr.contains( "," )) {
             String pointStr = polygonStr.substring( 0 , polygonStr.indexOf( "," )).trim();
             polygonStrList.add(pointStr);
             polygonStr = polygonStr.substring(polygonStr.indexOf( "," ) + 1 );
         }
         return transPointStrToPolygon(polygonStrList, cutProperty);
     }
 
     public Polygon transPointStrToPolygon(List<String> polygonStrList,CutProperty cutProperty) {
         int m = cutProperty.getBei() / 100 ;
         Double xtemp = Double.valueOf(cutProperty.getX() * m);
         Double ytemp = Double.valueOf(cutProperty.getY() * m);
         Polygon polygon = new Polygon();
         for (String pointStr : polygonStrList) {
             Double x = Double.parseDouble(pointStr.substring( 0 , pointStr.indexOf( " " )));
             Double y = Double.parseDouble(pointStr.substring(pointStr.indexOf( " " )).trim());
             x = x * cutProperty.getBei() - xtemp;
             y = cutProperty.getRightborder()*m - y * cutProperty.getBei()-ytemp;
             polygon.addPoint(x.intValue(), y.intValue());
         }
         return polygon;
     }
 
     //读取json文件
     public String readJsonFile(String fileName) {
         String jsonStr = "" ;
         try {
             File jsonFile = new File(fileName);
             FileReader fileReader = new FileReader(jsonFile);
             Reader reader = new InputStreamReader( new FileInputStream(jsonFile), "utf-8" );
             int ch = 0 ;
             StringBuffer sb = new StringBuffer();
             while ((ch = reader.read()) != - 1 ) {
                 sb.append(( char ) ch);
             }
             fileReader.close();
             reader.close();
             jsonStr = sb.toString();
             return jsonStr;
         } catch (IOException e) {
             e.printStackTrace();
             return null ;
         }
     }
 
     /**
      * 读取json获取图片剪切参数
      *
      * @param
      * @return
      * @author banxian
      * @date: 2021/6/25 8:16
      */
     public Map<String, CutProperty> getCutPropertyMap() {
         String path = Thread.currentThread().getContextClassLoader().getResource( "property.json" ).getPath(); //获取项目根目录
         String s = readJsonFile(path);
         JSONObject jsonObject = JSON.parseObject(s);
         JSONArray jsonArray = jsonObject.getJSONArray( "properties" ); //构建JSONArray数组
         List<CutProperty> cutPropertyList = jsonArray.toJavaList(CutProperty. class );
         Map<String, CutProperty> cutPropertyMap = new HashMap();
         for (CutProperty cutProperty : cutPropertyList) {
             cutPropertyMap.put(cutProperty.getProvince(), cutProperty);
         }
         return cutPropertyMap;
     }
    
}

核心类：从读到的shp文件数据中提取字符串转化为多多边形，绘图 。

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package com.gwhn.controller;
 
import com.gwhn.Util.PolygonUtil;
import com.gwhn.Util.TxtUtil;
import com.gwhn.Util.YereeXmlContext;
import com.gwhn.entity.CutProperty;
import com.gwhn.geotools.GeometryCreator;
import com.gwhn.geotools.ShapeUtil;
import org.locationtech.jts.geom.MultiPolygon;
import org.opengis.feature.Property;
 
import java.io.File;
import java.util.ArrayList;
import java.util.List;
import java.util.Map;
 
/**
  * @author banxian
  * @date 2021/6/1 8:12
  */
public class ShpPictureController {
     PolygonUtil polygonUtil = new PolygonUtil();
     TxtUtil txtUtil = new TxtUtil();
     Map<String, CutProperty> cutPropertyMap = txtUtil.getCutPropertyMap();
 
     /**
      * 根据国家shp文件画出中国地图
      * @param
      * @return
      * @author banxian
      * @date: 2021/6/28 12:35
      */
     public void doNation() {
         YereeXmlContext yereeXmlContext = new YereeXmlContext();
         GeometryCreator geometryCreator = new GeometryCreator();
         String shapePath = yereeXmlContext.getXmlValue( "Http" , "FileExport" , "ProvincePath" ) + "province.shp" ;
         ShapeUtil shapeUtil = new ShapeUtil();
         try {
             List<Property> propertyList = shapeUtil.SHPRead(shapePath);
             List<MultiPolygon> multiPolygonList = new ArrayList<>();
             for ( int i = 0 ; i * 8 < propertyList.size(); i++) {
                 Property property = propertyList.get(i * 8 );
                 String valueStr = property.getValue().toString();
                 MultiPolygon multiPolygon = geometryCreator.createMulPolygonByWKT(valueStr);
                 multiPolygonList.add(multiPolygon);
             }
             String path = yereeXmlContext.getXmlValue( "Http" , "FileExport" , "ExportPath" );
             File newFileDir = new File(path);
             //如果不存在 则创建
             if (!newFileDir.exists()) {
                 newFileDir.mkdirs();
             }
//            String picturName = imageUtils.genImageName() + ".jpg";
             String picturName = "中国.jpg" ;
             CutProperty cutProperty = cutPropertyMap.get( "中国" );
             polygonUtil.graphicsByMultiPolygon(path + picturName, multiPolygonList, cutProperty);
         } catch (Exception e) {
             e.printStackTrace();
         }
         System.out.println( "完成" );
     }
 
     /**
      * 根据分省shp文件画出地图
      * @param
      * @return
      * @author banxian
      * @date: 2021/6/28 12:35
      */
     public void doProvince() {
         YereeXmlContext yereeXmlContext = new YereeXmlContext();
         GeometryCreator geometryCreator = new GeometryCreator();
         ShapeUtil shapeUtil = new ShapeUtil();
         String shapeDirPath = yereeXmlContext.getXmlValue( "Http" , "FileExport" , "ProvinceShapePath" );
 
         List<File> fileList = new ArrayList<>();
         fileList = getFileList(shapeDirPath, fileList);
         for ( int j = 0 ; j < fileList.size(); j++) {
             File file = fileList.get(j);
             if (file.getName().contains( ".shp" )) {
                 File parentFile = file.getParentFile();
                 String province = parentFile.getName();
                 System.out.println(province);
                 int size = 7 ;
                 if (province.equals( "湖北" ) || province == "湖北" || province.equals( "安徽" ) || province == "安徽" ) {
                     size = 10 ;
                 }
                 CutProperty cutProperty = cutPropertyMap.get(province);
                 try {
                     List<Property> propertyList = shapeUtil.SHPRead(file.getPath());
                     List<MultiPolygon> multiPolygonList = new ArrayList<>();
                     for ( int i = 0 ; i * size < propertyList.size(); i++) {
                         String valueStr = propertyList.get(i * size).getValue().toString();
                         MultiPolygon multiPolygon = geometryCreator.createMulPolygonByWKT(valueStr);
                         multiPolygonList.add(multiPolygon);
                     }
                     String path = yereeXmlContext.getXmlValue( "Http" , "FileExport" , "ExportPath" );
                     ;
                     File newFileDir = new File(path);
                     //如果不存在 则创建
                     if (!newFileDir.exists()) {
                         newFileDir.mkdirs();
                     }
                     String picturName = province + ".jpg" ;
                     polygonUtil.graphicsByMultiPolygon(path + picturName, multiPolygonList, cutProperty);
                 } catch (Exception e) {
                     e.printStackTrace();
                 }
             }
         }
         System.out.println( "完成" );
     }
 
     /**
      * 获取shp文件集合
      * @param dirPath
      * @param fileList
      * @return
      * @author banxian
      * @date: 2021/6/28 12:36
      */
     public List<File> getFileList(String dirPath, List<File> fileList) {
         File dir = new File(dirPath);
         if (!dir.exists()) {
             dir.mkdirs();
         }
         for (File file : dir.listFiles()) {
             if (!file.isDirectory()) {
                 fileList.add(file);
             } else {
                 getFileList(file.getPath(), fileList);
             }
         }
         return fileList;
     }
 
}

地图坐标截取参数 。

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{
   "properties" : [
     {
       "province" : "中国" ,
       "x" : 8000 ,
       "y" : 18600 ,
       "width" : 25000 ,
       "height" : 15000 ,
       "weight" : 5.0 ,
       "bei" : 350 ,
       "rightborder" : 25000 ,
       "stringsize" : 500
     },
     {
       "province" : "上海" ,
       "x" : 12050 ,
       "y" : 21800 ,
       "width" : 23000 ,
       "height" : 16000 ,
       "weight" : 0.8 ,
       "bei" : 10000 ,
       "rightborder" : 25000 ,
       "stringsize" : 500
     },
     {
       "province" : "云南" ,
       "x" : 9700 ,
       "y" : 22000 ,
       "width" : 25000 ,
       "height" : 25000 ,
       "weight" : 2.0 ,
       "bei" : 2500 ,
       "rightborder" : 25000 ,
       "stringsize" : 50
     },
     {
       "province" : "内蒙古" ,
       "x" : 9000 ,
       "y" : 19000 ,
       "width" : 25000 ,
       "height" : 15000 ,
       "weight" : 3.0 ,
       "bei" : 600 ,
       "rightborder" : 25000 ,
       "stringsize" : 180
     },
     {
       "province" : "北京" ,
       "x" : 11515 ,
       "y" : 20830 ,
       "width" : 25000 ,
       "height" : 25000 ,
       "weight" : 1.0 ,
       "bei" : 10000 ,
       "rightborder" : 25000 ,
       "stringsize" : 600
     },
     {
       "province" : "吉林" ,
       "x" : 12100 ,
       "y" : 20200 ,
       "width" : 25000 ,
       "height" : 17000 ,
       "weight" : 2.0 ,
       "bei" : 2100 ,
       "rightborder" : 25000 ,
       "stringsize" : 40
     },
     {
       "province" : "四川" ,
       "x" : 9600 ,
       "y" : 21500 ,
       "width" : 25000 ,
       "height" : 20000 ,
       "weight" : 2.0 ,
       "bei" : 1900 ,
       "rightborder" : 25000 ,
       "stringsize" : 40
     },
     {
       "province" : "天津" ,
       "x" : 11600 ,
       "y" : 20920 ,
       "width" : 25000 ,
       "height" : 25000 ,
       "weight" : 1.0 ,
       "bei" : 10000 ,
       "rightborder" : 25000 ,
       "stringsize" : 600
     },
     {
       "province" : "宁夏" ,
       "x" : 10400 ,
       "y" : 20960 ,
       "width" : 20000 ,
       "height" : 25000 ,
       "weight" : 1.0 ,
       "bei" : 4210 ,
       "rightborder" : 25000 ,
       "stringsize" : 40
     },
     {
       "province" : "安徽" ,
       "x" : 11350 ,
       "y" : 21500 ,
       "width" : 25000 ,
       "height" : 22000 ,
       "weight" : 1.0 ,
       "bei" : 3300 ,
       "rightborder" : 25000 ,
       "stringsize" : 25
     },
     {
       "province" : "山东" ,
       "x" : 11430 ,
       "y" : 21050 ,
       "width" : 25000 ,
       "height" : 20000 ,
       "weight" : 1.0 ,
       "bei" : 2900 ,
       "rightborder" : 25000 ,
       "stringsize" : 35
     },
     {
       "province" : "山西" ,
       "x" : 10900 ,
       "y" : 20850 ,
       "width" : 25000 ,
       "height" : 25000 ,
       "weight" : 1.0 ,
       "bei" : 3500 ,
       "rightborder" : 25000 ,
       "stringsize" : 25
     },
     {
       "province" : "广东" ,
       "x" : 10750 ,
       "y" : 22400 ,
       "width" : 25000 ,
       "height" : 15000 ,
       "weight" : 1.0 ,
       "bei" : 2200 ,
       "rightborder" : 25000 ,
       "stringsize" : 40
     },
     {
       "province" : "广西" ,
       "x" : 10400 ,
       "y" : 22200 ,
       "width" : 25000 ,
       "height" : 18000 ,
       "weight" : 1.0 ,
       "bei" : 2600 ,
       "rightborder" : 25000 ,
       "stringsize" : 35
     },
     {
       "province" : "新疆" ,
       "x" : 7200 ,
       "y" : 19800 ,
       "width" : 25000 ,
       "height" : 20000 ,
       "weight" : 2.0 ,
       "bei" : 900 ,
       "rightborder" : 25000 ,
       "stringsize" : 150
     },
     {
       "province" : "江苏" ,
       "x" : 11550 ,
       "y" : 21400 ,
       "width" : 25000 ,
       "height" : 25000 ,
       "weight" : 1.0 ,
       "bei" : 4000 ,
       "rightborder" : 25000 ,
       "stringsize" : 25
     },
     {
       "province" : "江西" ,
       "x" : 11250 ,
       "y" : 21950 ,
       "width" : 25000 ,
       "height" : 25000 ,
       "weight" : 1.0 ,
       "bei" : 4000 ,
       "rightborder" : 25000 ,
       "stringsize" : 25
     },
     {
       "province" : "河北" ,
       "x" : 11250 ,
       "y" : 20600 ,
       "width" : 25000 ,
       "height" : 25000 ,
       "weight" : 1.0 ,
       "bei" : 3000 ,
       "rightborder" : 25000 ,
       "stringsize" : 40
     },
     {
       "province" : "河南" ,
       "x" : 10900 ,
       "y" : 21200 ,
       "width" : 25000 ,
       "height" : 23000 ,
       "weight" : 1.0 ,
       "bei" : 2700 ,
       "rightborder" : 25000 ,
       "stringsize" : 25
     },
     {
       "province" : "浙江" ,
       "x" : 11800 ,
       "y" : 21800 ,
       "width" : 25000 ,
       "height" : 25000 ,
       "weight" : 1.0 ,
       "bei" : 5000 ,
       "rightborder" : 25000 ,
       "stringsize" : 25
     },
     {
       "province" : "湖北" ,
       "x" : 10800 ,
       "y" : 21500 ,
       "width" : 25000 ,
       "height" : 20000 ,
       "weight" : 1.0 ,
       "bei" : 3000 ,
       "rightborder" : 25000 ,
       "stringsize" : 30
     },
     {
       "province" : "湖南" ,
       "x" : 10800 ,
       "y" : 21900 ,
       "width" : 25000 ,
       "height" : 25000 ,
       "weight" : 1.0 ,
       "bei" : 3500 ,
       "rightborder" : 25000 ,
       "stringsize" : 25
     },
     {
       "province" : "甘肃" ,
       "x" : 9000 ,
       "y" : 20300 ,
       "width" : 25000 ,
       "height" : 25000 ,
       "weight" : 2.0 ,
       "bei" : 1200 ,
       "rightborder" : 25000 ,
       "stringsize" : 70
     },
     {
       "province" : "福建" ,
       "x" : 11550 ,
       "y" : 22050 ,
       "width" : 25000 ,
       "height" : 25000 ,
       "weight" : 1.0 ,
       "bei" : 4000 ,
       "rightborder" : 25000 ,
       "stringsize" : 25
     },
     {
       "province" : "西藏" ,
       "x" : 7500 ,
       "y" : 21000 ,
       "width" : 25000 ,
       "height" : 15000 ,
       "weight" : 1.5 ,
       "bei" : 1000 ,
       "rightborder" : 25000 ,
       "stringsize" : 100
     },
     {
       "province" : "贵州" ,
       "x" : 10350 ,
       "y" : 21900 ,
       "width" : 25000 ,
       "height" : 25000 ,
       "weight" : 1.0 ,
       "bei" : 3200 ,
       "rightborder" : 25000 ,
       "stringsize" : 35
     },
     {
       "province" : "辽宁" ,
       "x" : 11850 ,
       "y" : 20500 ,
       "width" : 25000 ,
       "height" : 25000 ,
       "weight" : 1.0 ,
       "bei" : 3300 ,
       "rightborder" : 25000 ,
       "stringsize" : 25
     },
     {
       "province" : "重庆" ,
       "x" : 10500 ,
       "y" : 21700 ,
       "width" : 25000 ,
       "height" : 25000 ,
       "weight" : 1.0 ,
       "bei" : 4700 ,
       "rightborder" : 25000 ,
       "stringsize" : 20
     },
     {
       "province" : "陕西" ,
       "x" : 10450 ,
       "y" : 21000 ,
       "width" : 25000 ,
       "height" : 25000 ,
       "weight" : 1.0 ,
       "bei" : 2900 ,
       "rightborder" : 25000 ,
       "stringsize" : 25
     },
     {
       "province" : "青海" ,
       "x" : 8700 ,
       "y" : 20900 ,
       "width" : 25000 ,
       "height" : 15000 ,
       "weight" : 2.0 ,
       "bei" : 1500 ,
       "rightborder" : 25000 ,
       "stringsize" : 70
     },
     {
       "province" : "黑龙江" ,
       "x" : 12000 ,
       "y" : 19500 ,
       "width" : 25000 ,
       "height" : 18000 ,
       "weight" : 1.0 ,
       "bei" : 1500 ,
       "rightborder" : 25000 ,
       "stringsize" : 60
     }
   ]
}

测试类 。

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public static void main(String[] args) {
         try {
             ShpPictureController shpPictureController = new ShpPictureController();
//            shpPictureController.doProvince();
             shpPictureController.doNation();
         } catch (Exception e) {
             e.printStackTrace();
         }
     }

最终画出的图片效果如下

java使用GeoTools读取shp文件并画图的操作代码

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原文链接：https://blog.csdn.net/oLengYueHun/article/details/118378393 。

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