Stack Trace您好我正在使用GUI进行垄断，我已经达到了一个阶段，我需要获得用户输入，这将要求特定数量的玩家，并提供一定的基于指定玩家数量的代币（垄断件）数量。我目前遇到了一个问题，我觉得我不应该像以前那样严肃，如果我试着指定游戏的玩家数量，我会用一个ArrayIndexOutOfBoundsException命中，我可以＆似乎无法确定错误的位置和方法，以及如何解决问题。感谢您提前获得帮助，我们也欢迎您对我的代码进行任何编辑或提示，以提高其效率。我将附上所有必要的程序文件。
P.s我发布了完整的源代码，因为我觉得这是必要的，因为缩短的版本不会让事情变得清晰。再次感谢。 P.p.s代码在我指定源代码中的玩家数量时没有要求用户输入但在我指定用户输入时停止工作时工作。 Monopoly Board Image
package sprint_One;
/*
* Code written by: lagosBoys A layered pane was used to place all components on the frame at the
* desired locations
*/
import java.awt.*;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import javax.swing.*;
import javax.swing.border.Border;
import javax.swing.border.TitledBorder;
public class UI_Monopoly_Board extends JFrame {
/**
*
*/
private static final long serialVersionUID = 1L;
// Array of coordinates for the position of each square on the board
Point[] locations = {new Point(630, 643), new Point(570, 643), new Point(510, 643),
new Point(450, 643), new Point(390, 643), new Point(330, 643), new Point(270, 643),
new Point(210, 643), new Point(150, 643), new Point(95, 643), new Point(60, 643),
new Point(60, 573), new Point(60, 503), new Point(60, 433), new Point(60, 383),
new Point(60, 323), new Point(60, 273), new Point(60, 213), new Point(60, 153),
new Point(60, 93), new Point(60, 33),
new Point(120, 13), new Point(180, 13), new Point(230, 13), new Point(280, 13),
new Point(340, 13), new Point(400, 13), new Point(460, 13), new Point(520, 13),
new Point(580, 13), new Point(660, 60), new Point(660, 120), new Point(660, 160),
new Point(660, 220), new Point(660, 280), new Point(660, 340), new Point(660, 400),
new Point(660, 460), new Point(660, 520), new Point(660, 580), new Point(660, 640)};
// The default position or starting point which is go
Point defaultPosition = new Point(600, 603);
private int players;
private Token[] token;
private static JPanel infoPanel;
private static JPanel commandPanel;
// creates a fixed length for the text field used by the command field
final static int field_Width = 20;
private static JTextField commandField = new JTextField(field_Width);
private static JLabel commandLabel = new JLabel("Enter Command: ");
private Border blackLineBorder;
private final int ROWS = 35;
private final int COLUMNS = 40;
private JTextArea textArea = new JTextArea(ROWS, COLUMNS);
private static JLabel echoed_Text_Label = new JLabel();
private JLayeredPane layeredPane = getLayeredPane(); // The use of a JLayeredPane allows easier
// and more flexible specification of
// component positions
private static JLabel monopolyImageLabel;
public UI_Monopoly_Board() {
String playerNumber = JOptionPane.showInputDialog("Please enter the number of players");
// int tokenNumber = Integer.parseInt(playerNumber);
// players = 6;
players = Integer.parseInt(playerNumber);
int offset = 10;
// Initialise tokens depending on number of players and spaces them out with offset
if(players >= 2 || players <= 6)
{
token = new Token[players];
switch (players) {
case 2:
token[0] = new Token();
token[0].setBounds(10, 10, 700, 700);
token[0].setPosition(600, 603);
token[1] = new Token(Color.red, null);
token[1].setBounds(10, 10, 700, 700);
token[1].setPosition(600 + offset, 603 + offset);
break;
case 3:
token[0] = new Token();
token[0].setBounds(10, 10, 700, 700);
token[0].setPosition(600, 603);
token[1] = new Token(Color.red, null);
token[1].setBounds(10, 10, 700, 700);
token[1].setPosition(600 + offset, 603 + offset);
offset = offset + 10;
token[2] = new Token(Color.blue, null);
token[2].setBounds(10, 10, 700, 700);
token[2].setPosition(600 + offset, 603 + offset);
break;
case 4:
token[0] = new Token();
token[0].setBounds(10, 10, 700, 700);
token[0].setPosition(600, 603);
token[1] = new Token(Color.red, null);
token[1].setBounds(10, 10, 700, 700);
token[1].setPosition(600 + offset, 603 + offset);
offset = offset + 10;
token[2] = new Token(Color.blue, null);
token[2].setBounds(10, 10, 700, 700);
token[2].setPosition(600 + offset, 603 + offset);
offset = offset + 10;
token[3] = new Token(Color.green, null);
token[3].setBounds(10, 10, 700, 700);
token[3].setPosition(600 + offset, 603 + offset);
break;
case 5:
token[0] = new Token();
token[0].setBounds(10, 10, 700, 700);
token[0].setPosition(600, 603);
token[1] = new Token(Color.red, null);
token[1].setBounds(10, 10, 700, 700);
token[1].setPosition(600 + offset, 603 + offset);
offset = offset + 10;
token[2] = new Token(Color.blue, null);
token[2].setBounds(10, 10, 700, 700);
token[2].setPosition(600 + offset, 603 + offset);
offset = offset + 10;
token[3] = new Token(Color.green, null);
token[3].setBounds(10, 10, 700, 700);
token[3].setPosition(600 + offset, 603 + offset);
offset = offset + 10;
token[4] = new Token(Color.yellow, null);
token[4].setBounds(10, 10, 700, 700);
token[4].setPosition(600 + offset, 603 + offset);
break;
case 6:
token[0] = new Token();
token[0].setBounds(10, 10, 700, 700);
token[0].setPosition(600, 603);
token[1] = new Token(Color.red, null);
token[1].setBounds(10, 10, 700, 700);
token[1].setPosition(600 + offset, 603 + offset);
offset = offset + 10;
token[2] = new Token(Color.blue, null);
token[2].setBounds(10, 10, 700, 700);
token[2].setPosition(600 + offset, 603 + offset);
offset = offset + 10;
token[3] = new Token(Color.green, null);
token[3].setBounds(10, 10, 700, 700);
token[3].setPosition(600 + offset, 603 + offset);
offset = offset + 10;
token[4] = new Token(Color.yellow, null);
token[4].setBounds(10, 10, 700, 700);
token[4].setPosition(600 + offset, 603 + offset);
offset = offset + 10;
token[5] = new Token(Color.cyan, null);
token[5].setBounds(10, 10, 700, 700);
token[5].setPosition(600 + offset, 603 + offset);
break;
default:
System.out.println("Invalid number of players");
}
}
// The location of the image should be specified here
monopolyImageLabel =
new JLabel(new ImageIcon(this.getClass().getResource("Monopoly_board.jpg")));
monopolyImageLabel.setBounds(-50, -30, 800, 750);
// The image and the tokens are added to the pane at different levels allowing them to overlap
layeredPane.add(monopolyImageLabel);
layeredPane.add(token[0], new Integer(1));
layeredPane.add(token[1], new Integer(2));
layeredPane.add(token[2], new Integer(3));
layeredPane.add(token[3], new Integer(4));
layeredPane.add(token[4], new Integer(5));
layeredPane.add(token[5], new Integer(6));
setSize(1500, 750);
setExtendedState(JFrame.MAXIMIZED_BOTH); // Sets the default window for the JFrame as a
// maximised
this.setResizable(false);
setTitle("Welcome to Monopoly");
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); // Ensures the JFrame operation ends completely
// upon exiting the window
setVisible(true);
}
// This method displays the information panel and adds it to the pane
public void information_Panel() {
infoPanel = new JPanel();
JScrollPane scrollPane = new JScrollPane(textArea);
blackLineBorder = BorderFactory.createLineBorder(Color.BLACK);
TitledBorder title = BorderFactory.createTitledBorder(blackLineBorder, "Information Panel");
infoPanel.setBorder(title);
infoPanel.add(echoed_Text_Label, BorderLayout.NORTH);
// prevents any information from being added or deleted from the information panel.
textArea.setEditable(false);
infoPanel.add(scrollPane);
infoPanel.setBounds(750, 0, 600, 600); // specifies the desired coordinates of the panel being
// added to the layered pane
layeredPane.add(infoPanel);
}
// This method displays the command panel and adds it to the pane
public void command_Panel() {
commandPanel = new JPanel();
blackLineBorder = BorderFactory.createLineBorder(Color.BLACK);
JButton button = new JButton("Enter");
/*
* implements the actionlistener interface on the button to help execute a command when the
* button is clicked
*/
button.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
if (commandField.getText().isEmpty()) {
String command = null;
textArea.append(command);
}
else {
String command = commandField.getText();
textArea.append(command + "\n");
commandField.setText("");
}
}
});
// This invokes the actionListeners interface for actionPerformed (quick way to implement a key
// listener on the keyboards Enter button)
getRootPane().setDefaultButton(button);
commandPanel.setBorder(BorderFactory.createLineBorder(Color.BLACK));
button.setPreferredSize(new Dimension(65, 20));
commandPanel.add(commandLabel);
commandPanel.add(commandField);
commandPanel.add(button);
commandPanel.setBounds(800, 630, 500, 50); // specifies the desired coordinates of the panel
// being added to the layered pane
layeredPane.add(commandPanel);
}
// Method which moves the tokens round the board one at a time
public void moveTokens() throws InterruptedException {
int i, j, offset;
offset = 0;
for (i = 0; i < token.length; i++) {
for (j = 0; j < locations.length; j++) {
token[i].setPosition(locations[j].x, locations[j].y);
repaint();
// controls the movement speed of the tokens across the board allowing for easy detection of
// their movement
Thread.sleep(300);
}
token[i].setPosition(defaultPosition.x + offset, defaultPosition.y + offset);
offset = offset + 15;
}
}
public static void main(String[] args) throws InterruptedException {
// TODO Auto-generated method stub
UI_Monopoly_Board obj = new UI_Monopoly_Board();
obj.information_Panel();
obj.command_Panel();
obj.moveTokens();
[enter image description here][1]
}
}
package sprint_One;
import java.awt.*;
import javax.swing.JComponent;
/*
* Each token has variables for location, dimension and shape, there's a constructor that allows the
* user to specify the colour of the shape the necessary accessor and mutator functions are provided
*/
public class Token extends JComponent {
/**
*
*/
private static final long serialVersionUID = 1L;
private int length;
private int breadth;
private int x;
private int y;
private Shape shape;
private Color color;
private String name;
private int balance;
public Token() {
super();
setVisible(true);
this.length = 15;
this.breadth = 15;
this.x = 5;
this.y = 5;
this.shape = new Rectangle(this.x, this.y, this.length, this.breadth);
this.color = Color.BLACK;
this.name = "";
this.balance = 20;
}
public Token(Color color, String name) {
this();
this.color = color;
this.name = name;
}
public int getX() {
return this.x;
}
public int getY() {
return this.y;
}
// Method which specifies the x and y coordinates of the tokens
public void setPosition(int x, int y) {
this.x = x;
this.y = y;
}
public void paintComponent(Graphics g) {
Graphics2D g2 = (Graphics2D) g;
super.paintComponent(g);
g2.setColor(color);
g2.fill(shape); // fills the shape with the colour specified
g2.draw(this.shape);
}
public Shape getShape() {
// TODO Auto-generated method stub
return this.shape;
}
}
答案 0 :(得分：0)
好的，你应该学习如何使用调试器......
这是导致错误的行：
public override async Task GrantResourceOwnerCredentials(OAuthGrantResourceOwnerCredentialsContext context)
{
var allowedOrigin = context.OwinContext.Get<string>("as:clientAllowedOrigin");
if (allowedOrigin == null)
{
allowedOrigin = "*";
}
context.OwinContext.Response.Headers.Add("Access-Control-Allow-Origin", new[] { allowedOrigin });
/* db based authenication*/
var user = ValidateUser(context.UserName.Trim(), context.Password.Trim());
if (user != null)
{
/* db based authenication*/
var identity = new ClaimsIdentity(context.Options.AuthenticationType);
identity.AddClaim(new Claim(ClaimTypes.Name, context.UserName));
identity.AddClaim(new Claim(ClaimTypes.Role, "user"));
identity.AddClaim(new Claim("sub", context.UserName));
var props = new AuthenticationProperties(new Dictionary<string, string>
{
{
"Status", "Success"
},
{
"StatusCode", "200"
},
{
"data", context.UserName.Trim()
},
{
"message", "User valid"
}
});
var ticket = new AuthenticationTicket(identity, props);
//add token to header
context.Validated(ticket);
// TRY THIS
context.Request.Context.Authentication.SignIn(identity);
}
else
{
context.Rejected();
//_reponse = _util.Create(0, HttpStatusCode.Forbidden, message: "User Invaid.", data: null);
}
//RETURN YOUR DTO
context.Response.WriteAsync(JsonConvert.SerializeObject(new Responseto{ // propeties here}, new JsonSerializerSettings { Formatting = Formatting.Indented }));
}
你这样初始化layeredPane.add(token[2], new Integer(3));
：
token那么，如果if(players >= 2 || players <= 6)
{
token = new Token[players];
是2，该怎么办？您将获得players。
另一个提示：
ArrayIndexOutOfBoundsException不像
那样可读layeredPane.add(token[0], new Integer(1));