0

我已经制作了一个程序，将输入的数据保存在文本字段中。它的保存技术是这样的

data0 = student number
data1 = name
data2 = section
data3 = cp
data4 = email
data5 = address

然后它将所有条目保存在一行文本中，如下所示

data0 | data1 | data2 | data3 | data4 | data5

但我面临的问题是如何加载字符串并对不同的数据进行切片并将其打印在指定它们的不同文本字段中。

顺便说一句，这是我的代码

import java.awt.HeadlessException;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.io.File;
import java.io.FileWriter;
import java.io.IOException;
import javax.swing.JOptionPane;

/*
 * To change this template, choose Tools | Templates
 * and open the template in the editor.
 */

/**
 *
 * @author Jfetizanan
 */
public class DATAPROCCESS extends javax.swing.JFrame {
    private static final long serialVersionUID = 1L;

    /**
     * Creates new form processPOINT
     */
    public DATAPROCCESS() {
        initComponents();
    }

    /**
     * This method is called from within the constructor to initialize the form.
     * WARNING: Do NOT modify this code. The content of this method is always
     * regenerated by the Form Editor.
     */
    @SuppressWarnings("unchecked")
    // <editor-fold defaultstate="collapsed" desc="Generated Code">
    private void initComponents() {

        jLabel7 = new javax.swing.JLabel();
        Label1 = new javax.swing.JLabel();
        jLabel1 = new javax.swing.JLabel();
        StudentNO = new javax.swing.JTextField();
        jLabel2 = new javax.swing.JLabel();
        name = new javax.swing.JTextField();
        jLabel3 = new javax.swing.JLabel();
        section = new javax.swing.JTextField();
        jLabel4 = new javax.swing.JLabel();
        jLabel5 = new javax.swing.JLabel();
        cp = new javax.swing.JTextField();
        jLabel6 = new javax.swing.JLabel();
        email = new javax.swing.JTextField();
        jLabel8 = new javax.swing.JLabel();
        jTextField1 = new javax.swing.JTextField();
        save = new javax.swing.JButton();
        reset = new javax.swing.JButton();

        jLabel7.setText("jLabel7");

        setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);
        setAlwaysOnTop(true);
        setBackground(new java.awt.Color(51, 102, 255));
        setCursor(new java.awt.Cursor(java.awt.Cursor.DEFAULT_CURSOR));
        setResizable(false);

        Label1.setHorizontalAlignment(javax.swing.SwingConstants.CENTER);
        Label1.setText("STUDENT INFO STORAGE v1");

        jLabel1.setText("Student No:");

        jLabel2.setText("Name:");

        jLabel3.setText("Section:");

        jLabel5.setText("Cellphone #:");

        jLabel6.setText("E-Mail:");

        jLabel8.setText("Address:");

        save.setText("Save");
        save.addActionListener(new ActionListener() {
                            @Override
                            public void actionPerformed(ActionEvent e) {
                                 File file = new File("data.dat");

                            try {
                                 try (FileWriter writer = new FileWriter(file, true)) {
                                 String data0 = StudentNO.getText();
                                 String data1 = name.getText();
                                 String data2 = section.getText();
                                 String data3 = cp.getText();
                                 String data4 = email.getText();
                                 String data5 = jTextField1.getText();

                                 writer.write(data0+" | "+data1+" | "+data2+" | "+data3+" | "+data4+" | "+data5+"/n");
                                }

                                System.out.println("Data Saved");
                                } catch (IOException | HeadlessException z) {
                                JOptionPane.showMessageDialog(null, e);
                                }
                                } 
                                });
        reset.setText("Reset");

        javax.swing.GroupLayout layout = new javax.swing.GroupLayout(getContentPane());
        getContentPane().setLayout(layout);
        layout.setHorizontalGroup(
            layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(layout.createSequentialGroup()
                .addContainerGap()
                .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
                    .addComponent(Label1, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
                    .addGroup(layout.createSequentialGroup()
                        .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
                            .addGroup(layout.createSequentialGroup()
                                .addGap(10, 10, 10)
                                .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
                                    .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING, false)
                                        .addComponent(jLabel1, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
                                        .addComponent(jLabel2, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE))
                                    .addGroup(layout.createSequentialGroup()
                                        .addGap(1, 1, 1)
                                        .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.TRAILING)
                                            .addComponent(jLabel4)
                                            .addComponent(jLabel3))))
                                .addGap(15, 15, 15))
                            .addGroup(javax.swing.GroupLayout.Alignment.TRAILING, layout.createSequentialGroup()
                                .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
                                    .addComponent(jLabel6)
                                    .addComponent(jLabel5)
                                    .addComponent(jLabel8))
                                .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.UNRELATED)))
                        .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING, false)
                            .addGroup(javax.swing.GroupLayout.Alignment.TRAILING, layout.createSequentialGroup()
                                .addComponent(save, javax.swing.GroupLayout.DEFAULT_SIZE, 136, Short.MAX_VALUE)
                                .addGap(18, 18, 18)
                                .addComponent(reset, javax.swing.GroupLayout.PREFERRED_SIZE, 138, javax.swing.GroupLayout.PREFERRED_SIZE))
                            .addComponent(StudentNO)
                            .addComponent(name)
                            .addComponent(section)
                            .addComponent(cp)
                            .addComponent(email)
                            .addComponent(jTextField1))
                        .addGap(0, 13, Short.MAX_VALUE)))
                .addContainerGap())
        );
        layout.setVerticalGroup(
            layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(layout.createSequentialGroup()
                .addContainerGap()
                .addComponent(Label1, javax.swing.GroupLayout.PREFERRED_SIZE, 28, javax.swing.GroupLayout.PREFERRED_SIZE)
                .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
                .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
                    .addComponent(jLabel1)
                    .addComponent(StudentNO, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE))
                .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.UNRELATED)
                .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
                    .addComponent(jLabel2)
                    .addComponent(name, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE))
                .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.UNRELATED)
                .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
                    .addComponent(jLabel3)
                    .addComponent(section, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE))
                .addGap(11, 11, 11)
                .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
                    .addGroup(layout.createSequentialGroup()
                        .addGap(20, 20, 20)
                        .addComponent(jLabel4))
                    .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
                        .addComponent(cp, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
                        .addComponent(jLabel5)))
                .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.UNRELATED)
                .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
                    .addComponent(email, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
                    .addComponent(jLabel6))
                .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.UNRELATED)
                .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
                    .addComponent(jTextField1, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
                    .addComponent(jLabel8))
                .addGap(18, 18, 18)
                .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
                    .addComponent(save)
                    .addComponent(reset))
                .addContainerGap(27, Short.MAX_VALUE))
        );

        pack();
    }// </editor-fold>

    /**
     * @param args the command line arguments
     */
    public static void main(String args[]) {

        try {
            for (javax.swing.UIManager.LookAndFeelInfo info : javax.swing.UIManager.getInstalledLookAndFeels()) {
                if ("Nimbus".equals(info.getName())) {
                    javax.swing.UIManager.setLookAndFeel(info.getClassName());
                    break;
                }
            }
        } catch (ClassNotFoundException | InstantiationException | IllegalAccessException | javax.swing.UnsupportedLookAndFeelException ex) {
            java.util.logging.Logger.getLogger(DATAPROCCESS.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
        }
        //</editor-fold>

        /*
         * Create and display the form
         */
        java.awt.EventQueue.invokeLater(new Runnable() {

            public void run() {
                new DATAPROCCESS().setVisible(true);
            }
        });
    }
    // Variables declaration - do not modify
    private javax.swing.JLabel Label1;
    private javax.swing.JTextField StudentNO;
    private javax.swing.JTextField cp;
    private javax.swing.JTextField email;
    private javax.swing.JLabel jLabel1;
    private javax.swing.JLabel jLabel2;
    private javax.swing.JLabel jLabel3;
    private javax.swing.JLabel jLabel4;
    private javax.swing.JLabel jLabel5;
    private javax.swing.JLabel jLabel6;
    private javax.swing.JLabel jLabel7;
    private javax.swing.JLabel jLabel8;
    private javax.swing.JTextField jTextField1;
    private javax.swing.JTextField name;
    private javax.swing.JButton reset;
    private javax.swing.JButton save;
    private javax.swing.JTextField section;
    // End of variables declaration
}
4

2 回答 2

1

如果您尝试解析数据文件中的数据并将其加载到相应的字段，您可以执行这些操作。
1. 读取文件的内容。您可以在此处获取示例 2. 使用以下代码拆分内容。

String delimiter = "|";
temp = str.split(delimiter);
for(int i =0; i < temp.length ; i++) {
     System.out.println(temp[i]); //you will get data here
}

3.现在获取相应的文本字段并加载相应的数据

  1. 现在您正在尝试使用第一个字段实际搜索数据。你可以在下面这样做。
try{
      FileInputStream fstream = new FileInputStream("data.dat");
      DataInputStream in = new DataInputStream(fstream);
      BufferedReader br = new BufferedReader(new InputStreamReader(in));
      String strLine;
      while ((strLine = br.readLine()) != null)   {
       if (strLine.startsWith("Give your data0 here")){

                        String delimiter = "|";
                        temp = str.split(delimiter);
                        for(int i =0; i < temp.length ; i++) {
                          System.out.println(temp[i]); //you will get data here
                        }
       }
      }
      in.close();
      }catch (Exception e){
          System.err.println("Error: " + e.getMessage());
      }
于 2012-08-14T07:40:52.207 回答
1

使用此代码：

BufferedReader reader = new BufferedReader( new InputStreamReader( new FileInputStream( "filename" ), "UTF-8" ) ) );
String line = reader.readLine();
reader.close();
String[] parts = line.split( "\\|", -1 );

注意：你不应该使用FileWriter，因为它使用“默认编码”——不管是什么。始终使用

BufferedWriter writer = new BufferedWriter( new OutputStreamWriter( new FileOutputStream( "filename" ), "UTF-8" ) ) );
于 2012-08-14T07:36:15.120 回答