如果在 JTextBox 中输入一个字符串，然后按“输入按钮”，它会在 JTextField 中返回正确的数据，如果我更改了字符串，并且重新输入，也会返回正确的数据。如果我按下“输入按钮”然后按下“添加”按钮（将数据添加到 JList，并重新调用 Gui 方法以更新 JList），如果我尝试在 JTextField 中输入另一个字符串，当我按下回车按钮时没有任何反应。我不明白为什么会这样，如果有人看到我没有看到的东西，如果你能告诉我会很酷。
package movieinfo;
import java.awt.Color;
import java.awt.GridBagConstraints;
import java.awt.GridBagLayout;
import java.awt.List;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.io.File;
import java.io.IOException;
import java.nio.charset.Charset;
import java.util.ArrayList;
import java.util.Map;
import javax.swing.BorderFactory;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JList;
import javax.swing.JScrollPane;
import javax.swing.JTextArea;
import javax.swing.JTextField;
import javax.swing.event.ListSelectionEvent;
import javax.swing.event.ListSelectionListener;
import org.apache.commons.io.FileUtils;
import com.json.parsers.JSONParser;
import com.json.parsers.JsonParserFactory;
public class Swinggui {
private static JButton enter;
private static JTextField movietext;
private static JTextArea movieinfo;
private static JList listofmovies;// converts moviestowatch into gui
// element.
private static File textfilemovie; // file which movies marked for watching
// are saved
private static java.util.List<String> moviestowatch; // arraylist which is
// populated by
// textfilemovie
// than printed to
// GUI element
private static JsonParserFactory factory;
private static JSONParser parser;
@SuppressWarnings("rawtypes")
private static Map jsonData;
private static ListSelectionListener setSearch;
private static JButton add;
public static void main(String[] args) throws IOException {
yourMovies();
gui();
jsonAndButtons();
}
public static void gui() {
JFrame maingui = new JFrame("Gui");
maingui.setLayout(new GridBagLayout());
GridBagConstraints c = new GridBagConstraints();
c.fill = GridBagConstraints.VERTICAL;
enter = new JButton("Get Info");
c.gridx = 2;
c.gridy = 1;
maingui.add(enter, c);
add = new JButton("add");
c.gridx = 5;
c.gridy = 6;
maingui.add(add, c);
movieinfo = new JTextArea(5, 20);
movieinfo.setBorder(BorderFactory.createMatteBorder(2, 2, 2, 2,
Color.red));
movietext = new JTextField(18);
c.gridx = 1;
c.gridy = 1;
maingui.add(movietext, c);
final JScrollPane scrolll = new JScrollPane(movieinfo);
c.gridx = 1;
c.gridy = 3;
c.gridwidth = 2;
maingui.add(scrolll, c);
final JLabel titlee = new JLabel("Enter movie name below!");
c.gridx = 1;
c.gridy = 0;
maingui.add(titlee, c);
final JLabel info = new JLabel("Info");
c.gridx = 1;
c.gridy = 3;
maingui.add(titlee, c);
final JLabel watchlist = new JLabel("Watchlist");
c.gridx = 5;
c.gridy = 1;
maingui.add(watchlist, c);
maingui.setResizable(false);
maingui.setVisible(true);
listofmovies = new JList(moviestowatch.toArray());
c.gridx = 4;
c.gridy = 3;
maingui.add(new JScrollPane(listofmovies), c);
movieinfo.setLineWrap(true);
movieinfo.setWrapStyleWord(true);
movieinfo.setEditable(false);
scrolll.getPreferredSize();
listofmovies.addListSelectionListener(setSearch);
maingui.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
maingui.pack();
}
public static void jsonAndButtons() {
enter.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
System.out.println(apicall.getMovieInfo(movietext.getText().replaceAll(" ", "%20")));
factory = JsonParserFactory.getInstance();
parser = factory.newJsonParser();
jsonData = parser.parseJson(apicall.getMovieInfo(movietext
.getText().replaceAll(" ", "%20")));
String Title = (String) jsonData.get("Title");
String Year = (String) jsonData.get("Year");
String Plot = (String) jsonData.get("Plot");
movieinfo.setText("Title: " + Title + "\nYear: " + Year
+ "\nPlot: " + Plot);
}
});
add.addActionListener(new ActionListener(){
@Override
public void actionPerformed(ActionEvent arg0) {
try {
FileUtils.writeStringToFile( new File(
org.apache.commons.io.FileUtils.getUserDirectory()
+ "/yourmovies.txt"), "\n" + movietext.getText(), true);
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
try {
moviestowatch = FileUtils.readLines(textfilemovie);
jsonAndButtons();
gui();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
});
}
public static void yourMovies() throws IOException {
textfilemovie = new File(
org.apache.commons.io.FileUtils.getUserDirectory()
+ "/yourmovies.txt");
textfilemovie.createNewFile();
moviestowatch = FileUtils.readLines(textfilemovie);
setSearch = new ListSelectionListener() {
public void valueChanged(ListSelectionEvent arg0) {
factory = JsonParserFactory.getInstance();
parser = factory.newJsonParser();
jsonData = parser.parseJson(apicall.getMovieInfo(((String) listofmovies
.getSelectedValue()).replaceAll(" ", "%20")));
String Title = (String) jsonData.get("Title");
String Year = (String) jsonData.get("Year");
String Plot = (String) jsonData.get("Plot");
movieinfo.setText("Title: " + Title + "\nYear: " + Year
+ "\nPlot: " + Plot);
}
};
}
}