GIS：生成Shp文件

  /**
     * 生成shape文件
     *
     * @param shpPath 生成shape文件路径（包含文件名称）
     * @param encode  编码
     * @param geoType 图幅类型，Point和Rolygon
     * @param geoms   图幅集合
     */
    public static void write2Shape(String shpPath, String encode, String geoType, List<Geometry> geoms) {
        try {
            //创建shape文件对象
            File file = new File(shpPath);
            Map<String, Serializable> params = new HashMap<>();
            params.put(ShapefileDataStoreFactory.URLP.key, file.toURI().toURL());
            ShapefileDataStore ds = (ShapefileDataStore) new ShapefileDataStoreFactory().createNewDataStore(params);
            //定义图形信息和属性信息
            SimpleFeatureTypeBuilder tb = new SimpleFeatureTypeBuilder();
            tb.setCRS(DefaultGeographicCRS.WGS84);
            tb.setName("shapefile");

            if ("Polygon".equals(geoType)) {
                tb.add("the_geom", Polygon.class);
            } else if ("MultiPolygon".equals(geoType)) {
                tb.add("the_geom", MultiPolygon.class);
            } else if ("Point".equals(geoType)) {
                tb.add("the_geom", Point.class);
            } else if ("MultiPoint".equals(geoType)) {
                tb.add("the_geom", MultiPoint.class);
            } else if ("LineString".equals(geoType)) {
                tb.add("the_geom", LineString.class);
            } else if ("MultiLineString".equals(geoType)) {
                tb.add("the_geom", MultiLineString.class);
            } else {
                throw new Exception("Geometry中没有该类型：" + geoType);
            }
            ds.createSchema(tb.buildFeatureType());
            //设置编码
            ds.setCharset(Charset.forName(encode));
            //设置Writer
            FeatureWriter<SimpleFeatureType, SimpleFeature> writer = ds.getFeatureWriter(ds.getTypeNames()[0], Transaction.AUTO_COMMIT);
            for (Geometry geom : geoms) {
                SimpleFeature feature = writer.next();
                feature.setAttribute("the_geom", geom);
            }
            writer.write();
            writer.close();
            ds.dispose();
        } catch (Exception e) {
            e.printStackTrace();
        }
    }

 public static void main(String[] args) throws Exception {
            List<String> list = new ArrayList<>();
            list.add("POLYGON ((116.21278950384274 39.90557982319698, 116.21177234433465 39.90610963061354, 116.21106912279264 39.90264172209895, 116.21399502548638 39.902612822554126, 116.21629305278306 39.905011479365406, 116.21278950384274 39.90557982319698))");
            list.add("POLYGON((113.38185597038 34.54828048706,113.38224220848 34.548355588913,113.38249970055 34.548108825684,113.38237095451 34.54787279129,113.38208127594 34.547786960602,113.38185597038 34.54828048706))");

            List<Geometry> geometryList = new ArrayList<>();
            for (String str : list) {
                Geometry geom = wktToGeom(str);
                geometryList.add(geom);
            }

            String url = "F://tmp//ceshi2222.shp";
            ShapeUtil.write2Shape(url, "utf-8", "Polygon", geometryList);
        }

说几个重要的类：
**DataStore：**访问和存储矢量格式空间数据的引擎，对应关系数据库中database的概念，可以用来更新 ，删除，获取SimpleFeatureType（类比数据库中一张具体表）
**FeatureSource：**与DataStore相比，粒度更细，内部操作都是针对这张表的。
**FeatureStore：**子接口，对数据本身进行设置。
**SimpleFeature：**类比数据库中一条记录，与SimpleFeatureType进行了绑定。
**SimpleFeatureType：**对SimpleFeature进行数据结构约束，类比关系数据库的表结构。
**FeatureCollection：**存储Feature对象的集合类，注意两点：1.其迭代器使用完毕必须显示关闭，2.存储在同一个FeatureCollection中的对象具有相同的SimpleFeatureType。