如何从GUI输出文本到文件？ [英] How do I output text to a file from a GUI?

问题描述

您好我正在编写一个java类，并且大部分都在使用它。问题是当我运行它，输入数据，然后单击保存时，它应该将其保存到名为client.txt的文件中。虽然它确实为文件添加了记录。这远非正确。请让我知道我哪里出错了。谢谢

Hello I am writing a java class and have it working for the most part. The problem is when I run it, enter data, and click save it is suppose to save it to a file called client.txt. While it does add records to the file. It is far from correct. Please let me know where I am going wrong. Thanks

package clientinfo;

import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import java.io.*;
import java.util.Formatter;
import java.util.FormatterClosedException;
import java.util.NoSuchElementException;
import java.util.Scanner;
import javax.swing.JTextField;
import javax.swing.JButton;

public class ClientInfo extends JFrame implements ActionListener
{
    String content = "";
    String Name = "";
    String Sbalance = "";
    String ID = "";
    String Cbalance = "";
    
    BufferedWriter bw; 
    public ClientInfo()
    {
         super("Client Information");  
            
            getContentPane().setLayout(new java.awt.FlowLayout(java.awt.FlowLayout.RIGHT));
            
            JLabel lblName = new JLabel("Client Name:");
            JTextField txtName = new JTextField(16);
            add(lblName); add(txtName);
            Name = txtName.toString();

            JLabel lblSBalance = new JLabel("Starting Balance:");
            JTextField txtSBalance = new JTextField(16);
            add(lblSBalance); add(txtSBalance);
            Sbalance = txtSBalance.toString();

            JLabel lblID = new JLabel("Client ID:");
            JTextField txtID = new JTextField(16);
            add(lblID); add(txtID);
            ID = txtID.toString();

            JLabel lblCBalance = new JLabel("Closing Balance:");
            JTextField txtCBalance = new JTextField(16);
            add(lblCBalance); add(txtCBalance);
            Cbalance = txtCBalance.toString();

            JButton btnSave = new JButton("Save");
            add(btnSave);
            
            btnSave.addActionListener(this);      
    }

    public void actionPerformed(ActionEvent e)
    {
            try 
            {
                bw = new BufferedWriter(new FileWriter("client.txt",true));
                bw.newLine();
                content = ("" + Name + " " + Sbalance + " " + ID + "" + Cbalance);
                bw.write(content);
                bw.close();
            }	
            catch(IOException ex)
            {
                System.err.println("Output Error -- " + ex.toString());
            }
            
            Container c = getContentPane();
            c.setLayout(new GridLayout(3,2,20,20));
    }

    public static void main(String[] args) 
    {
            ClientInfo c = new ClientInfo();
            c.setVisible(true);
            c.setSize(565,150);
    }

}

Example of the current output:

javax.swing.JTextField[,0,0,0x0,invalid,layout=javax.swing.plaf.basic.BasicTextUI$UpdateHandler,alignmentX=0.0,alignmentY=0.0,border=javax.swing.plaf.BorderUIResource$CompoundBorderUIResource@34cd072c,flags=296,maximumSize=,minimumSize=,preferredSize=,caretColor=sun.swing.PrintColorUIResource[r=51,g=51,b=51],disabledTextColor=javax.swing.plaf.ColorUIResource[r=184,g=207,b=229],editable=true,margin=javax.swing.plaf.InsetsUIResource[top=0,left=0,bottom=0,right=0],selectedTextColor=sun.swing.PrintColorUIResource[r=51,g=51,b=51],selectionColor=javax.swing.plaf.ColorUIResource[r=184,g=207,b=229],columns=16,columnWidth=0,command=,horizontalAlignment=LEADING] javax.swing.JTextField[,0,0,0x0,invalid,layout=javax.swing.plaf.basic.BasicTextUI$UpdateHandler,alignmentX=0.0,alignmentY=0.0,border=javax.swing.plaf.BorderUIResource$CompoundBorderUIResource@34cd072c,flags=296,maximumSize=,minimumSize=,preferredSize=,caretColor=sun.swing.PrintColorUIResource[r=51,g=51,b=51],disabledTextColor=javax.swing.plaf.ColorUIResource[r=184,g=207,b=229],editable=true,margin=javax.swing.plaf.InsetsUIResource[top=0,left=0,bottom=0,right=0],selectedTextColor=sun.swing.PrintColorUIResource[r=51,g=51,b=51],selectionColor=javax.swing.plaf.ColorUIResource[r=184,g=207,b=229],columns=16,columnWidth=0,command=,horizontalAlignment=LEADING] javax.swing.JTextField[,0,0,0x0,invalid,layout=javax.swing.plaf.basic.BasicTextUI$UpdateHandler,alignmentX=0.0,alignmentY=0.0,border=javax.swing.plaf.BorderUIResource$CompoundBorderUIResource@34cd072c,flags=296,maximumSize=,minimumSize=,preferredSize=,caretColor=sun.swing.PrintColorUIResource[r=51,g=51,b=51],disabledTextColor=javax.swing.plaf.ColorUIResource[r=184,g=207,b=229],editable=true,margin=javax.swing.plaf.InsetsUIResource[top=0,left=0,bottom=0,right=0],selectedTextColor=sun.swing.PrintColorUIResource[r=51,g=51,b=51],selectionColor=javax.swing.plaf.ColorUIResource[r=184,g=207,b=229],columns=16,columnWidth=0,command=,horizontalAlignment=LEADING]javax.swing.JTextField[,0,0,0x0,invalid,layout=javax.swing.plaf.basic.BasicTextUI$UpdateHandler,alignmentX=0.0,alignmentY=0.0,border=javax.swing.plaf.BorderUIResource$CompoundBorderUIResource@34cd072c,flags=296,maximumSize=,minimumSize=,preferredSize=,caretColor=sun.swing.PrintColorUIResource[r=51,g=51,b=51],disabledTextColor=javax.swing.plaf.ColorUIResource[r=184,g=207,b=229],editable=true,margin=javax.swing.plaf.InsetsUIResource[top=0,left=0,bottom=0,right=0],selectedTextColor=sun.swing.PrintColorUIResource[r=51,g=51,b=51],selectionColor=javax.swing.plaf.ColorUIResource[r=184,g=207,b=229],columns=16,columnWidth=0,command=,horizontalAlignment=LEADING]

推荐答案

UpdateHandler，alignmentX = 0。 0 ，alignmentY = 0. 0 ，border = javax.swing.plaf.BorderUIResource

UpdateHandler,alignmentX=0.0,alignmentY=0.0,border=javax.swing.plaf.BorderUIResource

CompoundBorderUIResource @ 34cd072c，旗帜= 296，MAXIMUMSIZE =，=的minimumSize，首选大小=，caretColor = sun.swing.PrintColorUIResource [R = 51，G = 51，b = 51]，disabledTextColor = javax.swing.plaf.ColorUIResource [R = 184 ，G = 207，b = 229]，可编辑=真，裕度= javax.swing.plaf.InsetsUIResource [顶= 0，左= 0，底部= 0，右= 0]，selectedTextColor = sun.swing.PrintColorUIResource [R = 51，G = 51，b = 51]，selectionColor设置= javax.swing.plaf.ColorUIResource [R = 184，G = 207，b = 229 ]，columns = 16，columnWidth = 0，command =，horizo​​ntalAlignment = LEADING] javax.swing.JTextField [， 0 ， 0 ，0x0，无效，layout = javax.swing.plaf.basic.BasicTextUI

CompoundBorderUIResource@34cd072c,flags=296,maximumSize=,minimumSize=,preferredSize=,caretColor=sun.swing.PrintColorUIResource[r=51,g=51,b=51],disabledTextColor=javax.swing.plaf.ColorUIResource[r=184,g=207,b=229],editable=true,margin=javax.swing.plaf.InsetsUIResource[top=0,left=0,bottom=0,right=0],selectedTextColor=sun.swing.PrintColorUIResource[r=51,g=51,b=51],selectionColor=javax.swing.plaf.ColorUIResource[r=184,g=207,b=229],columns=16,columnWidth=0,command=,horizontalAlignment=LEADING] javax.swing.JTextField[,0,0,0x0,invalid,layout=javax.swing.plaf.basic.BasicTextUI

UpdateHandler，alignmentX = 0. 0 ,alignmentY=0. 0 ，border = javax.swing.plaf.BorderUIResource

UpdateHandler,alignmentX=0.0,alignmentY=0.0,border=javax.swing.plaf.BorderUIResource

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