I am new to geotools and my java knowledge is rusty. I'm trying to input many shapefile into java so that I can calculate the areas of all polygons in them and add a separate attribute to the respective shapefile. I tried using the code given in the link Does anyone know of a library in Java that can parse ESRI Shapefiles? . But I'm getting exception thrown
Oct 21, 2016 12:39:08 PM org.geotools.factory.FactoryRegistry scanForPlugins
WARNING: Can't load a service for category "DataStoreFactorySpi". Cause is "ServiceConfigurationError: org.geotools.data.DataStoreFactorySpi: Provider org.geotools.data.shapefile.ShapefileDataStoreFactory could not be instantiated".
java.util.ServiceConfigurationError: org.geotools.data.DataStoreFactorySpi: Provider org.geotools.data.shapefile.ShapefileDataStoreFactory could not be instantiated
at java.util.ServiceLoader.fail(ServiceLoader.java:232)
at java.util.ServiceLoader.access$100(ServiceLoader.java:185)
at java.util.ServiceLoader$LazyIterator.nextService(ServiceLoader.java:384)
at java.util.ServiceLoader$LazyIterator.next(ServiceLoader.java:404)
at java.util.ServiceLoader$1.next(ServiceLoader.java:480)
at org.geotools.factory.FactoryRegistry.register(FactoryRegistry.java:826)
at org.geotools.factory.FactoryRegistry.scanForPlugins(FactoryRegistry.java:772)
at org.geotools.factory.FactoryRegistry.scanForPluginsIfNeeded(FactoryRegistry.java:805)
at org.geotools.factory.FactoryRegistry.getServiceProviders(FactoryRegistry.java:196)
at org.geotools.data.DataAccessFinder.getAvailableDataStores(DataAccessFinder.java:207)
at org.geotools.data.DataStoreFinder.getAvailableDataStores(DataStoreFinder.java:116)
at org.geotools.data.DataStoreFinder.getDataStore(DataStoreFinder.java:87)
at shapefile.ReadFile.main(ReadFile.java:24)
Caused by: java.lang.NoClassDefFoundError: org/geotools/data/directory/FileStoreFactory
at java.lang.Class.getDeclaredConstructors0(Native Method)
at java.lang.Class.privateGetDeclaredConstructors(Class.java:2671)
at java.lang.Class.getConstructor0(Class.java:3075)
at java.lang.Class.newInstance(Class.java:412)
at java.util.ServiceLoader$LazyIterator.nextService(ServiceLoader.java:380)
... 10 more
Caused by: java.lang.ClassNotFoundException: org.geotools.data.directory.FileStoreFactory
at java.net.URLClassLoader.findClass(URLClassLoader.java:381)
at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:331)
at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
... 15 more
Oct 21, 2016 12:39:08 PM org.geotools.factory.FactoryRegistry scanForPlugins
WARNING: Can't load a service for category "DataStoreFactorySpi". Cause is "ServiceConfigurationError: org.geotools.data.DataStoreFactorySpi: Provider org.geotools.data.shapefile.ShapefileDirectoryFactory could not be instantiated".
java.util.ServiceConfigurationError: org.geotools.data.DataStoreFactorySpi: Provider org.geotools.data.shapefile.ShapefileDirectoryFactory could not be instantiated
at java.util.ServiceLoader.fail(ServiceLoader.java:232)
at java.util.ServiceLoader.access$100(ServiceLoader.java:185)
at java.util.ServiceLoader$LazyIterator.nextService(ServiceLoader.java:384)
at java.util.ServiceLoader$LazyIterator.next(ServiceLoader.java:404)
at java.util.ServiceLoader$1.next(ServiceLoader.java:480)
at org.geotools.factory.FactoryRegistry.register(FactoryRegistry.java:826)
at org.geotools.factory.FactoryRegistry.scanForPlugins(FactoryRegistry.java:772)
at org.geotools.factory.FactoryRegistry.scanForPluginsIfNeeded(FactoryRegistry.java:805)
at org.geotools.factory.FactoryRegistry.getServiceProviders(FactoryRegistry.java:196)
at org.geotools.data.DataAccessFinder.getAvailableDataStores(DataAccessFinder.java:207)
at org.geotools.data.DataStoreFinder.getAvailableDataStores(DataStoreFinder.java:116)
at org.geotools.data.DataStoreFinder.getDataStore(DataStoreFinder.java:87)
at shapefile.ReadFile.main(ReadFile.java:24)
Caused by: java.lang.NoClassDefFoundError: org/geotools/data/directory/FileStoreFactory
at java.lang.Class.getDeclaredConstructors0(Native Method)
at java.lang.Class.privateGetDeclaredConstructors(Class.java:2671)
at java.lang.Class.getConstructor0(Class.java:3075)
at java.lang.Class.newInstance(Class.java:412)
at java.util.ServiceLoader$LazyIterator.nextService(ServiceLoader.java:380)
... 10 more
Caused by: java.lang.ClassNotFoundException: org.geotools.data.directory.FileStoreFactory
at java.net.URLClassLoader.findClass(URLClassLoader.java:381)
at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:331)
at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
... 15 more
java.lang.NullPointerException
The error is probabaly at the line
DataStore dataStore = DataStoreFinder.getDataStore(connect);
How do I resolve it? Should I change any of the java arguments? Should the file be full name?
For loading shapefiles you can use this code:
ShapefileDataStore myShape = new ShapefileDataStore(new File("path/to/shapefile.shp").toURL());
Make sure the path is correct.