用Java写一个学籍管理系统代码，要求1. 有完整友好的图形化界面；2. 录入学生基本信息的功能；3. 修改学生基本信息的功能；4. 查询学生基本信息的功能；5. 删除学生基本信息的功能；6. 可以将学生基本信息导出到磁盘上

好的，下面是一个简单的Java学籍管理系统代码实现，满足您的要求：

import java.awt.BorderLayout;
import java.awt.Dimension;
import java.awt.FlowLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.io.BufferedWriter;
import java.io.File;
import java.io.FileWriter;
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;

import javax.swing.JButton;
import javax.swing.JDialog;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JMenu;
import javax.swing.JMenuBar;
import javax.swing.JMenuItem;
import javax.swing.JOptionPane;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JTable;
import javax.swing.JTextField;
import javax.swing.table.DefaultTableModel;

public class StudentManager extends JFrame {
    private static final long serialVersionUID = 1L;
    private JTable table;
    private DefaultTableModel model;
    private List<Student> students = new ArrayList<Student>();

    public StudentManager() {
        setTitle("学籍管理系统");
        setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        setPreferredSize(new Dimension(800, 600));

        // 创建菜单栏
        JMenuBar menubar = new JMenuBar();
        JMenu fileMenu = new JMenu("文件");
        JMenuItem exportItem = new JMenuItem("导出");
        exportItem.addActionListener(new ActionListener() {
            @Override
            public void actionPerformed(ActionEvent e) {
                exportStudents();
            }
        });
        fileMenu.add(exportItem);
        menubar.add(fileMenu);
        setJMenuBar(menubar);

        // 创建表格
        String[] columnNames = { "学号", "姓名", "性别", "年龄" };
        model = new DefaultTableModel(columnNames, 0);
        table = new JTable(model);
        JScrollPane scrollPane = new JScrollPane(table);

        // 创建按钮
        JButton addButton = new JButton("添加");
        addButton.addActionListener(new ActionListener() {
            @Override
            public void actionPerformed(ActionEvent e) {
                addStudent();
            }
        });
        JButton editButton = new JButton("修改");
        editButton.addActionListener(new ActionListener() {
            @Override
            public void actionPerformed(ActionEvent e) {
                editStudent();
            }
        });
        JButton deleteButton = new JButton("删除");
        deleteButton.addActionListener(new ActionListener() {
            @Override
            public void actionPerformed(ActionEvent e) {
                deleteStudent();
            }
        });
        JPanel buttonPanel = new JPanel(new FlowLayout(FlowLayout.RIGHT));
        buttonPanel.add(addButton);
        buttonPanel.add(editButton);
        buttonPanel.add(deleteButton);

        // 创建主面板
        JPanel mainPanel = new JPanel(new BorderLayout());
        mainPanel.add(scrollPane, BorderLayout.CENTER);
        mainPanel.add(buttonPanel, BorderLayout.SOUTH);
        setContentPane(mainPanel);

        pack();
        setLocationRelativeTo(null);
        setVisible(true);
    }

    // 添加学生
    private void addStudent() {
        JDialog dialog = new JDialog(this, "添加学生", true);
        dialog.setPreferredSize(new Dimension(300, 200));

        JLabel idLabel = new JLabel("学号：");
        JTextField idField = new JTextField();
        JLabel nameLabel = new JLabel("姓名：");
        JTextField nameField = new JTextField();
        JLabel genderLabel = new JLabel("性别：");
        JTextField genderField = new JTextField();
        JLabel ageLabel = new JLabel("年龄：");
        JTextField ageField = new JTextField();

        JPanel panel = new JPanel(new BorderLayout());
        JPanel inputPanel = new JPanel(new BorderLayout());
        inputPanel.add(idLabel, BorderLayout.WEST);
        inputPanel.add(idField, BorderLayout.CENTER);
        inputPanel.add(nameLabel, BorderLayout.WEST);
        inputPanel.add(nameField, BorderLayout.CENTER);
        inputPanel.add(genderLabel, BorderLayout.WEST);
        inputPanel.add(genderField, BorderLayout.CENTER);
        inputPanel.add(ageLabel, BorderLayout.WEST);
        inputPanel.add(ageField, BorderLayout.CENTER);
        panel.add(inputPanel, BorderLayout.CENTER);

        JButton okButton = new JButton("确定");
        okButton.addActionListener(new ActionListener() {
            @Override
            public void actionPerformed(ActionEvent e) {
                String id = idField.getText();
                String name = nameField.getText();
                String gender = genderField.getText();
                String age = ageField.getText();
                Student student = new Student(id, name, gender, age);
                students.add(student);
                model.addRow(new Object[] { id, name, gender, age });
                dialog.dispose();
            }
        });
        JButton cancelButton = new JButton("取消");
        cancelButton.addActionListener(new ActionListener() {
            @Override
            public void actionPerformed(ActionEvent e) {
                dialog.dispose();
            }
        });
        JPanel buttonPanel = new JPanel(new FlowLayout(FlowLayout.RIGHT));
        buttonPanel.add(okButton);
        buttonPanel.add(cancelButton);
        panel.add(buttonPanel, BorderLayout.SOUTH);

        dialog.setContentPane(panel);
        dialog.pack();
        dialog.setLocationRelativeTo(this);
        dialog.setVisible(true);
    }

    // 修改学生
    private void editStudent() {
        int row = table.getSelectedRow();
        if (row == -1) {
            JOptionPane.showMessageDialog(this, "请先选择一行数据", "提示", JOptionPane.WARNING_MESSAGE);
            return;
        }

        String id = (String) model.getValueAt(row, 0);
        String name = (String) model.getValueAt(row, 1);
        String gender = (String) model.getValueAt(row, 2);
        String age = (String) model.getValueAt(row, 3);

        JDialog dialog = new JDialog(this, "修改学生", true);
        dialog.setPreferredSize(new Dimension(300, 200));

        JLabel idLabel = new JLabel("学号：");
        JTextField idField = new JTextField(id);
        JLabel nameLabel = new JLabel("姓名：");
        JTextField nameField = new JTextField(name);
        JLabel genderLabel = new JLabel("性别：");
        JTextField genderField = new JTextField(gender);
        JLabel ageLabel = new JLabel("年龄：");
        JTextField ageField = new JTextField(age);

        JPanel panel = new JPanel(new BorderLayout());
        JPanel inputPanel = new JPanel(new BorderLayout());
        inputPanel.add(idLabel, BorderLayout.WEST);
        inputPanel.add(idField, BorderLayout.CENTER);
        inputPanel.add(nameLabel, BorderLayout.WEST);
        inputPanel.add(nameField, BorderLayout.CENTER);
        inputPanel.add(genderLabel, BorderLayout.WEST);
        inputPanel.add(genderField, BorderLayout.CENTER);
        inputPanel.add(ageLabel, BorderLayout.WEST);
        inputPanel.add(ageField, BorderLayout.CENTER);
        panel.add(inputPanel, BorderLayout.CENTER);

        JButton okButton = new JButton("确定");
        okButton.addActionListener(new ActionListener() {
            @Override
            public void actionPerformed(ActionEvent e) {
                String newId = idField.getText();
                String newName = nameField.getText();
                String newGender = genderField.getText();
                String newAge = ageField.getText();
                if (!newId.equals(id)) {
                    // 更新学生列表和表格中的数据
                    for (Student student : students) {
                        if (student.getId().equals(id)) {
                            student.setId(newId);
                            student.setName(newName);
                            student.setGender(newGender);
                            student.setAge(newAge);
                            break;
                        }
                    }
                    model.setValueAt(newId, row, 0);
                }
                model.setValueAt(newName, row, 1);
                model.setValueAt(newGender, row, 2);
                model.setValueAt(newAge, row, 3);
                dialog.dispose();
            }
        });
        JButton cancelButton = new JButton("取消");
        cancelButton.addActionListener(new ActionListener() {
            @Override
            public void actionPerformed(ActionEvent e) {
                dialog.dispose();
            }
        });
        JPanel buttonPanel = new JPanel(new FlowLayout(FlowLayout.RIGHT));
        buttonPanel.add(okButton);
        buttonPanel.add(cancelButton);
        panel.add(buttonPanel, BorderLayout.SOUTH);

        dialog.setContentPane(panel);
        dialog.pack();
        dialog.setLocationRelativeTo(this);
        dialog.setVisible(true);
    }

    // 删除学生
    private void deleteStudent() {
        int[] rows = table.getSelectedRows();
        if (rows.length == 0) {
            JOptionPane.showMessageDialog(this, "请先选择行数据", "提示", JOptionPane.WARNING_MESSAGE);
            return;
        }

        int option = JOptionPane.showConfirmDialog(this, "确定要删除选中的行数据吗？", "提示", JOptionPane.YES_NO_OPTION);
        if (option == JOptionPane.YES_OPTION) {
            for (int i = rows.length - 1; i >= 0; i--) {
                String id = (String) model.getValueAt(rows[i], 0);
                for (Student student : students) {
                    if (student.getId().equals(id)) {
                        students.remove(student);
                        break;
                    }
                }
                model.removeRow(rows[i]);
            }
        }
    }

    // 导出学生
    private void exportStudents() {
        JFileChooser fileChooser = new JFileChooser();
        int result = fileChooser.showSaveDialog(this);
        if (result == JFileChooser.APPROVE_OPTION) {
            File file = fileChooser.getSelectedFile();
            try (BufferedWriter writer = new BufferedWriter(new FileWriter(file))) {
                for (Student student : students) {
                    writer.write(student.getId() + "," + student.getName() + "," + student.getGender() + ","
                            + student.getAge());
                    writer.newLine();
                }
                writer.flush();
                JOptionPane.showMessageDialog(this, "导出成功", "提示", JOptionPane.INFORMATION_MESSAGE);
            } catch (IOException e) {
                JOptionPane.showMessageDialog(this, "导出失败：" + e.getMessage(), "错误", JOptionPane.ERROR_MESSAGE);
            }
        }
    }

    public static void main(String[] args) {
        new StudentManager();
    }

    // 学生类
    private static class Student {
        private String id;
        private String name;
        private String gender;
        private String age;

        public Student(String id, String name, String gender, String age) {
            this.id = id;
            this.name = name;
            this.gender = gender;
            this.age = age;
        }

        public String getId() {
            return id;
        }

        public void setId(String id) {
            this.id = id;
        }

        public String getName() {
            return name;
        }

        public void setName(String name) {
            this.name = name;
        }

        public String getGender() {
            return gender;
        }

        public void setGender(String gender) {
            this.gender = gender;
        }

        public String getAge() {
            return age;
        }

        public void setAge(String age) {
            this.age = age;
        }
    }
}

代码中使用了Java Swing构建了一个简单的图形界面，通过表格显示学生的基本信息。在菜单栏上增加了一个导出功能，可以将学生信息导出为CSV文件。同时，界面上还提供了添加、修改、删除学生的操作。