我正在嘗試調整 Java Swing 中的聊天框區域。它似乎在頂部，而我需要它在框架的底部。
我的代碼：
package com.javavalley;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JTextArea;
import javax.swing.JTextField;
import javax.swing.JScrollPane;
import java.awt.Color;
import java.awt.event.*;
import javax.swing.border.Border;
import javax.swing.BorderFactory;
import java.lang.Override;
import java.lang.Thread;
import java.lang.Math;
public class ChatBot extends JFrame{
private JFrame frame;
private JTextArea chatArea;
private JTextField chatBox;
private JScrollPane scroll;
private Border border;
public static void main(String[] args){
new ChatBot();
}
public ChatBot(){
frame = new JFrame("Product Bot");
chatArea = new JTextArea(20,50);
chatBox = new JTextField();
scroll = new JScrollPane(chatArea, JScrollPane.VERTICAL_SCROLLBAR_AS_NEEDED, JScrollPane.HORIZONTAL_SCROLLBAR_AS_NEEDED);
border = BorderFactory.createLineBorder(Color.BLUE, 1);
chatArea.setSize(540, 400);
chatArea.setLocation(30,5);
chatBox.setSize(540, 30);
chatBox.setLocation(18, 18);
chatBox.setBorder(border);
frame.setResizable(false);
frame.setSize(600, 600);
frame.add(chatBox);
frame.add(scroll);
frame.setVisible(true);
frame.setDefaultCloseOperation(EXIT_ON_CLOSE);
bot("Hello! I am a \"Product Bot\"! that answers product related queries! Ask me by typing below. Type \"QUIT\" to end the program. \n\n");
chatArea.append("Chats: \n");
chatBox.setText("");
chatBox.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent arg0) {
String gtext = chatBox.getText();
chatArea.append("You: " gtext "\n");
chatBox.setText("");
if(gtext.equals("QUIT")) {
sleep(500);
System.exit(0);
}
String category = "";
try {
category = com.javavalley.ProBot.findCategory(gtext);
System.out.println(category);
}
catch (Exception e) {
System.out.println("Exception thrown.");
}
String response = respond(category);
bot(response);
}
});
}
private void bot(String string)
{
chatArea.append("Bot: " string "\n");
}
private void sleep(int x) {
try {
Thread.sleep(x);
} catch (InterruptedException e) {
e.printStackTrace();
}
}
private String respond(String category)
{
String[] greetings = {"Hello, how can I help you?"};
String[] conversationContinue = {"How can I help you with?", "What else can I help you with?"};
String[] colorsinquiry = {"Black, Blue, Green, Red, Sierra Blue"};
String[] priceinquiry = {"Price is EUR 279"};
String[] productinquiry = {"Product is an Android 11 smart phone with latest features like Super AMOLED Display, 6.5 inches, Li-Ion 5000 mAh, non-removable battery, Octa-core (4x1.6 GHz Cortex-A55 & 4x1.2 GHz Cortex-A55))"};
String[] conversationComplete = {"Goodbye", "Bye", "Nice chatting with you. Bye!"};
if (category.equals("greeting")) return greetings[(int) (Math.random()*greetings.length)];
else if (category.equals("colors-inquiry")) return colorsinquiry[(int) (Math.random()*colorsinquiry.length)];
else if (category.equals("price-inquiry")) return priceinquiry[(int) (Math.random()*priceinquiry.length)];
else if (category.equals("product-inquiry")) return productinquiry[(int) (Math.random()*productinquiry.length)];
else if (category.equals("conversation-continue")) return conversationContinue[(int) (Math.random()*conversationContinue.length)];
else if (category.equals("conversation-complete")) return conversationComplete[(int) (Math.random()*conversationComplete.length)];
else return "Sorry";
}
}
PS：添加了原型代碼。我想要制作的是一個帶有一些聊天歷史的完整 GUI。我也想把它放在一個矩形視窗和一些 UI 改進中。
uj5u.com熱心網友回復：
是的，我想按照您展示的方式進行操作。
如果底部文本欄位被交換為 a JLabel（這里看起來更合乎邏輯）但布局是相同的，這就是您可能會看到的。
這是生成上面看到的螢屏截圖的代碼。（這也是一個 MRE，我希望你以后會發布。如果不是為了“填補原始代碼的空白”，我本可以在一半的時間內解決問題）。
import java.awt.*;
import javax.swing.*;
import javax.swing.border.*;
class ChatBot {
JFrame frame;
JTextArea chatArea;
JTextField chatBox;
Border border;
JScrollPane scroll;
public ChatBot() {
JPanel gui = new JPanel(new BorderLayout(5,5));
frame = new JFrame("Product Bot");
frame.setContentPane(gui);
chatArea = new JTextArea(10, 50);
chatBox = new JTextField();
scroll = new JScrollPane(chatArea,
JScrollPane.VERTICAL_SCROLLBAR_AS_NEEDED,
JScrollPane.HORIZONTAL_SCROLLBAR_AS_NEEDED);
border = BorderFactory.createLineBorder(Color.BLUE, 1);
chatBox.setBorder(border);
JLabel bot = new JLabel(
"Hello! I am a \"Product Bot\"! that answers product related queries! "
"Ask me by typing below. Type \"QUIT\" to end the program.");
chatArea.append("Chats: \n");
chatBox.setText("Chat Box");
gui.add(chatBox, BorderLayout.PAGE_START);
gui.add(scroll);
gui.add(bot, BorderLayout.PAGE_END);
gui.setBorder(new EmptyBorder(5,5,5,5));
frame.setResizable(false);
frame.pack();
frame.setVisible(true);
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
}
public static void main(String[] args) {
new ChatBot();
}
}
我忘了仔細記錄所做的更改（在代碼注釋中）。如果在仔細檢查代碼和相關 Java 檔案后有任何您不理解的更改，請在評論中詢問我，我會進一步解釋。
uj5u.com熱心網友回復：
您正在尋找一個布局。在這里我建議https://docs.oracle.com/javase/tutorial/uiswing/layout/border.html
無論如何，這是默認布局，所以你可以這樣做：
public ChatBot(){
...
frame.add(chatBox, BorderLayout.PAGE_START);
frame.add(scroll, BorderLayout.PAGE_END);
...
}
您可以混合布局，并且應該創建對簡單元素進行分組的面板。
轉載請註明出處，本文鏈接：https://www.uj5u.com/houduan/408903.html
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