我有一个将csv转换为shapefile的java类，它可以正常工作...现在，我想创建带有boutton的w Java应用程序，以便... ...因此我必须将按钮与csv2shape类关联... ana我真的不知道该怎么做..这是我的代码的一部分，它解释了我尝试做的事情并且它确实起作用
public class GestionTournee {
private JFrame frame;
/**
* Launch the application.
*/
public static void main(String[] args) {
EventQueue.invokeLater(new Runnable() {
public void run() {
try {
GestionTournee window = new GestionTournee();
window.frame.setVisible(true);
} catch (Exception e) {
e.printStackTrace();
}
}
});
}
/**
* Create the application.
*/
public GestionTournee() {
initialize();
}
/**
* Initialize the contents of the frame.
*/
private void initialize() {
frame = new JFrame();
frame.setBounds(100, 100, 450, 300);
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
Button button = new Button("New button");
button.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
new Thread(new Runnable() {
public void run() {
new Csv2shape();
}
}).start();
}
});
frame.getContentPane().add(button, BorderLayout.NORTH);
}
}
以及csv转换器的代码
public class Csv2shape {
public static void main(String[] args) throws Exception {
// Set cross-platform look & feel for compatability
UIManager.setLookAndFeel(UIManager.getCrossPlatformLookAndFeelClassName());
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.
*/
final SimpleFeatureType TYPE = DataUtilities.createType( "Location",
"the_geom:Point:srid=4326," + // <- the geometry attribute: Point type
"Date:String," + // <- a String attribute
"NombreAr:Double," + // <- a String attribute
"vitesse:String," + // <- a String attribute
"distance:Double" // a number attribute
);
System.out.println("TYPE:"+TYPE);
/* 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,
* using 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);
boolean foundAnyRowHigherThan4 = false;
double s =0;
boolean foundAnyRowHigherThan5 = false;
boolean checker = true;
double Longitude2 = 0;
double Latitude2 = 0;
double Dis = 0;
double dis = 0;
for (line = reader.readLine(); line != null; line = reader.readLine()) {
if (line.trim().length() > 0) { // skip blank lines
{
if(checker){
String currentTokens[] = line.split("\\,");
String currentName1 = currentTokens[0].trim();
String currentName2 = currentTokens[1].trim();
Longitude2 = Double.parseDouble(currentTokens[2]);
Latitude2 = Double.parseDouble(currentTokens[3]);
checker = false ;
continue;
}
String tokens[] = line.split("\\,");
String name1 = tokens[0].trim();
String name2 = tokens[1].trim();
double longitude = Double.parseDouble(tokens[2]);
double latitude = Double.parseDouble(tokens[3]);
String speedString = tokens[5].trim();
double dist = Double.parseDouble(tokens[4]);
float speedFloat = Float.parseFloat(speedString);
if(foundAnyRowHigherThan5 || speedFloat > 5.0) {
// a partir de ce point on ajoutera touts les points ,
if(!foundAnyRowHigherThan5) {
foundAnyRowHigherThan5 = true;
}
if(foundAnyRowHigherThan4 || speedFloat < 1.0) {
// a partir de ce point on ajoutera touts les points d'arrets,
if(speedFloat <0.1)
s = s+1 ;
else
foundAnyRowHigherThan4 = true;
}
/* Longitude (= x coord) first ! */
Point point = geometryFactory.createPoint(new Coordinate(longitude, latitude));
featureBuilder.add(point);
double earthRadius = 6371; //km pour la changer en metres faut ajouter 000 a la fin
double dLat = Math.toRadians(latitude-Latitude2);
double dLng = Math.toRadians(longitude-Longitude2);
double a = Math.sin(dLat/2) * Math.sin(dLat/2) +
Math.cos(Math.toRadians(Latitude2)) * Math.cos(Math.toRadians(latitude)) *
Math.sin(dLng/2) * Math.sin(dLng/2);
double c = 2 * Math.atan2(Math.sqrt(a), Math.sqrt(1-a));
double d = (float) (earthRadius * c);
dis = d+dis;
featureBuilder.add(name1);
featureBuilder.add(s);
featureBuilder.add(speedString);
featureBuilder.add(dis);
SimpleFeature feature = featureBuilder.buildFeature(null);
features.add(feature);
Longitude2 = longitude;
Latitude2 = latitude;
}
}
}
}
}
finally {
reader.close();
}
任何帮助，我都会很高兴...谢谢
最佳答案
您基本上正确地连接了事件处理程序（稍后会详细介绍）。
主要问题是CSV的逻辑在main的Csv2shape方法之内。您没有在事件处理程序中调用此方法，因为您只是在做new Csv2shape();。
要解决此问题，您可以简单地执行以下操作：Csv2shape.main(null);，这将调用具有逻辑的main方法，但是，不建议这样做（您的代码中最多应该有1个主要方法，并且应该不要自己叫它）。因此，解决您的问题，我建议您将在main中找到的逻辑移到其他方法中，例如private void createCSV()。在您的Csv2shape构造函数中，您可以调用以下方法：public Csv2shape() { this.createCSV();}。
以上应该会触发您需要的呼叫。
正如我在一开始所说的，事件处理程序的创建在大多数情况下都是正确的。这样做的问题是，您正在处理事件分派线程（EDT）上的文件，该线程是处理所有UI操作的线程，因此，对该线程执行沉重的非UI操作将对用户的体验产生不利影响。 。
要解决此问题，只需在新线程中启动Csv2shape构造函数。这将减轻EDT的负担：
因此，将new Csv2shape();替换为：
new Thread(new Runnable() {
@Override
public void run() {
new Csv2shape();
}
}).start();
编辑：
如果您在哪里跟随我的示例，这是
Csv2shape类的外观：public class Csv2shape {
public Csv2shape() {
try {
this.createCSV();
}
catch(Exception e) {
e.printStackTrace(); //Or someother means of logging.
}
}
private void createCSV() throws Exception {
// Set cross-platform look & feel for compatability
UIManager.setLookAndFeel(UIManager.getCrossPlatformLookAndFeelClassName());
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.
*/
final SimpleFeatureType TYPE = DataUtilities.createType( "Location",
"the_geom:Point:srid=4326," + // <- the geometry attribute: Point type
"Date:String," + // <- a String attribute
"NombreAr:Double," + // <- a String attribute
"vitesse:String," + // <- a String attribute
"distance:Double" // a number attribute
);
System.out.println("TYPE:"+TYPE);
/* 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,
* using 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);
boolean foundAnyRowHigherThan4 = false;
double s =0;
boolean foundAnyRowHigherThan5 = false;
boolean checker = true;
double Longitude2 = 0;
double Latitude2 = 0;
double Dis = 0;
double dis = 0;
for (line = reader.readLine(); line != null; line = reader.readLine()) {
if (line.trim().length() > 0) { // skip blank lines
{
if(checker){
String currentTokens[] = line.split("\\,");
String currentName1 = currentTokens[0].trim();
String currentName2 = currentTokens[1].trim();
Longitude2 = Double.parseDouble(currentTokens[2]);
Latitude2 = Double.parseDouble(currentTokens[3]);
checker = false ;
continue;
}
String tokens[] = line.split("\\,");
String name1 = tokens[0].trim();
String name2 = tokens[1].trim();
double longitude = Double.parseDouble(tokens[2]);
double latitude = Double.parseDouble(tokens[3]);
String speedString = tokens[5].trim();
double dist = Double.parseDouble(tokens[4]);
float speedFloat = Float.parseFloat(speedString);
if(foundAnyRowHigherThan5 || speedFloat > 5.0) {
// a partir de ce point on ajoutera touts les points ,
if(!foundAnyRowHigherThan5) {
foundAnyRowHigherThan5 = true;
}
if(foundAnyRowHigherThan4 || speedFloat < 1.0) {
// a partir de ce point on ajoutera touts les points d'arrets,
if(speedFloat <0.1)
s = s+1 ;
else
foundAnyRowHigherThan4 = true;
}
/* Longitude (= x coord) first ! */
Point point = geometryFactory.createPoint(new Coordinate(longitude, latitude));
featureBuilder.add(point);
double earthRadius = 6371; //km pour la changer en metres faut ajouter 000 a la fin
double dLat = Math.toRadians(latitude-Latitude2);
double dLng = Math.toRadians(longitude-Longitude2);
double a = Math.sin(dLat/2) * Math.sin(dLat/2) +
Math.cos(Math.toRadians(Latitude2)) * Math.cos(Math.toRadians(latitude)) *
Math.sin(dLng/2) * Math.sin(dLng/2);
double c = 2 * Math.atan2(Math.sqrt(a), Math.sqrt(1-a));
double d = (float) (earthRadius * c);
dis = d+dis;
featureBuilder.add(name1);
featureBuilder.add(s);
featureBuilder.add(speedString);
featureBuilder.add(dis);
SimpleFeature feature = featureBuilder.buildFeature(null);
features.add(feature);
Longitude2 = longitude;
Latitude2 = latitude;
}
}
}
}
}
finally {
reader.close();
}
}