标签：geotools name shapefile CSV2Shp System file new 格式 line
public class Csv2Shape {
public static void main(String[] args) throws Exception {
File file = JFileDataStoreChooser.showOpenFile("csv", null);
if (file == null) {
return;
}
/*
* We use the DataUtilities class to create a FeatureType that will describe the data in our
* shapefile.
*
* See also the createFeatureType method below for another, more flexible approach.
*/
// Create a FeatureType
final SimpleFeatureType TYPE = DataUtilities.createType("Location",
"location:Point:srid=4326," + // <- the geometry attribute: Point type
"name:String," + // <- a String attribute
"number:Integer" // a number attribute
);
// Create features
/*
* A list to collect features as we create them.
*/
List<SimpleFeature> features = new ArrayList<SimpleFeature>();
/*
* GeometryFactory will be used to create the geometry attribute of each feature (a Point
* object for the location)
*/
GeometryFactory geometryFactory = JTSFactoryFinder.getGeometryFactory();
SimpleFeatureBuilder featureBuilder = new SimpleFeatureBuilder(TYPE);
BufferedReader reader = new BufferedReader(new FileReader(file));
try {
/* First line of the data file is the header */
String line = reader.readLine();
System.out.println("Header: " + line);
for (line = reader.readLine(); line != null; line = reader.readLine()) {
if (line.trim().length() > 0) { // skip blank lines
String tokens[] = line.split("\\,");
double latitude = Double.parseDouble(tokens[0]);
double longitude = Double.parseDouble(tokens[1]);
String name = tokens[2].trim();
int number = Integer.parseInt(tokens[3].trim());
/* Longitude (= x coord) first ! */
Point point = geometryFactory.createPoint(new Coordinate(longitude, latitude));
featureBuilder.add(point);
featureBuilder.add(name);
featureBuilder.add(number);
SimpleFeature feature = featureBuilder.buildFeature(null);
features.add(feature);
}
}
} finally {
reader.close();
}
// Create a shapefile From a FeatureCollection
/*
* Get an output file name and create the new shapefile
*/
File newFile = getNewShapeFile(file);
ShapefileDataStoreFactory dataStoreFactory = new ShapefileDataStoreFactory();
Map<String, Serializable> params = new HashMap<String, Serializable>();
params.put("url", newFile.toURI().toURL());
params.put("create spatial index", Boolean.TRUE);
ShapefileDataStore newDataStore = (ShapefileDataStore) dataStoreFactory.createNewDataStore(params);
newDataStore.createSchema(TYPE);
/*
* You can comment out this line if you are using the createFeatureType method (at end of
* class file) rather than DataUtilities.createType
*/
newDataStore.forceSchemaCRS(DefaultGeographicCRS.WGS84);
// Write the feature data to the shapefile
/*
* Write the features to the shapefile
*/
Transaction transaction = new DefaultTransaction("create");
String typeName = newDataStore.getTypeNames()[0];
SimpleFeatureSource featureSource = newDataStore.getFeatureSource(typeName);
if (featureSource instanceof SimpleFeatureStore) {
SimpleFeatureStore featureStore = (SimpleFeatureStore) featureSource;
/*
* SimpleFeatureStore has a method to add features from a
* SimpleFeatureCollection object, so we use the ListFeatureCollection
* class to wrap our list of features.
*/
SimpleFeatureCollection collection = new ListFeatureCollection(TYPE, features);
featureStore.setTransaction(transaction);
try {
featureStore.addFeatures(collection);
transaction.commit();
} catch (Exception problem) {
problem.printStackTrace();
transaction.rollback();
} finally {
transaction.close();
}
System.exit(0); // success!
} else {
System.out.println(typeName + " does not support read/write access");
System.exit(1);
}
}
// Prompt for the output shapefile
/**
* Prompt the user for the name and path to use for the output shapefile
*
* @param csvFile
* the input csv file used to create a default shapefile name
*
* @return name and path for the shapefile as a new File object
*/
public static File getNewShapeFile(File csvFile) {
String path = csvFile.getAbsolutePath();
String newPath = path.substring(0, path.length() - 4) + ".shp";
JFileDataStoreChooser chooser = new JFileDataStoreChooser("shp");
chooser.setDialogTitle("Save shapefile");
chooser.setSelectedFile(new File(newPath));
int returnVal = chooser.showSaveDialog(null);
if (returnVal != JFileDataStoreChooser.APPROVE_OPTION) {
// the user cancelled the dialog
System.exit(0);
}
File newFile = chooser.getSelectedFile();
if (newFile.equals(csvFile)) {
System.out.println("Error: cannot replace " + csvFile);
System.exit(0);
}
return newFile;
}
// Another way to build a SimpleFeatureType
/**
* Here is how you can use a SimpleFeatureType builder to create the schema for your shapefile
* dynamically.
* <p>
* This method is an improvement on the code used in the main method above (where we used
* DataUtilities.createFeatureType) because we can set a Coordinate Reference System for the
* FeatureType and a a maximum field length for the 'name' field dddd
*/
public static SimpleFeatureType createFeatureType() {
SimpleFeatureTypeBuilder builder = new SimpleFeatureTypeBuilder();
builder.setName("Location");
builder.setCRS(DefaultGeographicCRS.WGS84); // <- Coordinate reference system
// add attributes in order
builder.add("Location", Point.class);
builder.length(15).add("Name", String.class); // <- 15 chars width for name field
// build the type
final SimpleFeatureType LOCATION = builder.buildFeatureType();
return LOCATION;
}
}
第一种：CreateFeatureType。。
第二种：从已有的shapefile中读取FeatureType。。
SimpleFeatureType featureType = store.getSchema(); System.out.println(featureType);
标签：geotools,name,shapefile,CSV2Shp,System,file,new,格式,line 来源： https://www.cnblogs.com/2008nmj/p/16265547.html
本站声明： 1. iCode9 技术分享网（下文简称本站）提供的所有内容，仅供技术学习、探讨和分享； 2. 关于本站的所有留言、评论、转载及引用，纯属内容发起人的个人观点，与本站观点和立场无关； 3. 关于本站的所有言论和文字，纯属内容发起人的个人观点，与本站观点和立场无关； 4. 本站文章均是网友提供，不完全保证技术分享内容的完整性、准确性、时效性、风险性和版权归属；如您发现该文章侵犯了您的权益，可联系我们第一时间进行删除； 5. 本站为非盈利性的个人网站，所有内容不会用来进行牟利，也不会利用任何形式的广告来间接获益，纯粹是为了广大技术爱好者提供技术内容和技术思想的分享性交流网站。