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WriterFeatureWriter<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。