使用Geotools读取Shapefile范围

Question

使用GeoTools库可以获得Shapefile的范围吗？ 我想从SHP读取TOP，LEFT，BOTTOM，RIGHT坐标。

好像没有一种getExtent（）方法的...

Answer 1

我还没有整理了以下，但它应该工作。

File file = new File("example.shp"); 
Map map = new HashMap(); 
map.put("url", file.toURL()); 
DataStore dataStore = DataStoreFinder.getDataStore(map); 

SimpleFeatureSource featureSource = dataStore.getFeatureSource(typeName); 
SimpleFeatureCollection collection = featureSource.getFeatures(); 

ReferencedEnvelope env = collection.getBounds(); 
double left = env.getMinX(); 
double right = env.getMaxX(); 
double top = env.getMaxY(); 
double bottom = env.getMinY(); 

Answer 2

谢谢，这就是我一直在寻找的！我只需要更改网址图。这是工作代码：

File file = new File(shpFilePath); 
Map<String, URL> map = new HashMap<String, URL>();  
map.put("url", file.toURI().toURL()); 

DataStore dataStore = DataStoreFinder.getDataStore(map); 

// SimpleFeatureSource featureSource = dataStore.getFeatureSource(shpName); this works too 
SimpleFeatureSource featureSource = dataStore.getFeatureSource(dataStore.getTypeNames()[0]);   
SimpleFeatureCollection collection = featureSource.getFeatures(); 

ReferencedEnvelope env = collection.getBounds(); 
double left = env.getMinX(); 
double right = env.getMaxX(); 
double top = env.getMaxY(); 
double bottom = env.getMinY();