本文实例为大家分享了数据库版的Java学生信息管理系统，供大家参考，具体内容如下
package Student_system;
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import java.io.*;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.Statement;
import java.util.*;
public class StudentSystem extends Jframe{
public static void main(String[] args){
Jframe frame = new Jframe();
frame.setTitle("信息管理系统");
frame.setSize(500, 500);
frame.setDefaultCloseOperation(Jframe.EXIT_ON_CLOSE);
Container container = frame.getContentPane();
container.setLayout(new FlowLayout());
JLabel lb=new JLabel("录入请先输入记录，查询、删除请先输入学号，修改是对查询" +
"内容改后的保存！");
final JTextField 学号;
final JTextField 姓名;
final JTextField 专业;
final JTextField 年级;
final JTextField 出生;
final JRadioButton 男;
final JRadioButton 女;
ButtonGroup group=null;
JButton 录入,查询,删除,修改,显示;
JPanel p1,p2,p3,p4,p5,p6,pv,ph;
学号=new JTextField(10);
姓名=new JTextField(10);
专业=new JTextField(10);
年级=new JTextField(10);
出生=new JTextField(10);
group=new ButtonGroup();
男=new JRadioButton("男");
女=new JRadioButton("女");
group.add(男);
group.add(女);
录入=new JButton("录入");
查询=new JButton("查询");
删除=new JButton("删除");
修改=new JButton("修改");
显示=new JButton("显示");
修改.setEnabled(false);
//添加输入框及文本框
p1=new JPanel();
p1.add(new JLabel("学号:",JLabel.CENTER));
p1.add(学号);
p2=new JPanel();
p2.add(new JLabel("姓名:",JLabel.CENTER));
p2.add(姓名);
p3=new JPanel();
p3.add(new JLabel("性别:",JLabel.CENTER));
p3.add(男);
p3.add(女);
p4=new JPanel();
p4.add(new JLabel("专业:",JLabel.CENTER));
p4.add(专业);
p5=new JPanel();
p5.add(new JLabel("年级:",JLabel.CENTER));
p5.add(年级);
p6=new JPanel();
p6.add(new JLabel("出生:",JLabel.CENTER));
p6.add(出生);
pv=new JPanel();
pv.setLayout(new GridLayout(6,1));
pv.add(p1);
pv.add(p2);
pv.add(p3);
pv.add(p4);
pv.add(p5);
pv.add(p6);
ph=new JPanel();
ph.add(录入);
ph.add(查询);
ph.add(修改);
ph.add(删除);
ph.add(显示);
frame.add(lb);
frame.add(ph);
frame.add(p1);
frame.add(p2);
frame.add(p3);
frame.add(p4);
frame.add(p5);
frame.add(p6);
frame.add(pv);
frame.add(ph);
class MyListener implements ActionListener {
public void actionPerformed (ActionEvent e) {
//判断选中是男是女
//录入 的功能
if(e.getActionCommand() == "录入") {
String text1 = 学号.getText().trim();
String text2 = 姓名.getText();
String text3 = 专业.getText();
String text4 = 年级.getText();
String text5 = 出生.getText();
String text6 = null;
String text7 = "- - - - -我是分割线 - - - - -";
if(男.isSelected()) {
text6 = "男";
}
if(女.isSelected()) {
text6 = "女";
}
//用texts包含此次所有录入信息
String texts = "nn学号：" + text1 + "nn" + "姓名：" + text2 + "nn" + "专业：" + text3 + "nn" + "年级：" + text4 + "nn" + "出生：" + text5 + "nn" + "性别：" + text6 + "nn" ;
//显示框
int m = JOptionPane.showConfirmDialog(null, "是否录入该条记录：" + texts , "录入" , JOptionPane.YES_NO_OPTION);//n = 1/0;
if(m==0) {
insert_Student(text1,text2,text3,text4,text5);
} else {
JOptionPane.showMessageDialog(null, "已取消该次录入！！");
}
}
//显示 的功能
if(e.getActionCommand() == "显示") {
int n = JOptionPane.showConfirmDialog(null, "是否显示所有记录" , "显示" , JOptionPane.YES_NO_OPTION);//n = 1/0;
if(n ==0 ) {
try {
File file = new File("D:/file.txt");
InputStreamReader reader = new InputStreamReader(
new FileInputStream(file));//创建一个输入流对象
BufferedReader bufferReader = new BufferedReader(reader);
String line = "";
String lines = null;
line = bufferReader.readLine();
while(line != null) {
System.out.println(line);
if(lines != null) {
lines = lines + "n" + line + "n";
} else {
lines = line + "n" ;
}
line = bufferReader.readLine();
}
//JOptionPane.showMessageDialog(null, lines , "显示",JOptionPane.INFORMATION_MESSAGE);
} catch (Exception e1) {
e1.printStackTrace();
}
} else {
JOptionPane.showMessageDialog(null, "已取消该次查询");
}
}
//查询 的功能
if(e.getActionCommand() == "查询") {
File file = new File("D:/file.txt");
BufferedReader reader = null;
String text7 = "- - - - -我是分割线 - - - - -";
try {
//InputStreamReader reader = new InputStreamReader(
// new FileInputStream(file));//创建一个输入流对象
reader = new BufferedReader(new FileReader(file));
//暂时仅允许查询学号
String text1 = 学号.getText();
int n = JOptionPane.showConfirmDialog(null, "查询的学号为：" + text1 , "查询" , JOptionPane.YES_NO_OPTION);//n = 1/0;
if(n == 0){
String line = null;
String lines = null;
while((line = reader.readLine())!= null) {
if(line.equals(text1)) {
System.out.println(line);
while(!(line.equals(text7))){
line = reader.readLine();
if(lines == null) {
lines = line + "n";
} else {
lines = lines + line + "n";
}
System.out.println(line);
}
} else {
continue;
}
}
JOptionPane.showMessageDialog(null, lines , "查询",JOptionPane.INFORMATION_MESSAGE);
reader.close();
} else {
JOptionPane.showMessageDialog(null, "已取消查询功能");
}
} catch (Exception e1) {
e1.printStackTrace();
} finally {
if(reader != null) {
try {
reader.close();
}catch (IOException e1){
}
}
}
}
//删除 的功能
if(e.getActionCommand() == "删除") {
String text1 = 学号.getText().trim();
delete_Student(text1);
}
}
}
//------------注册监听-------------
MyListener listener = new MyListener();
MyListener listen = new MyListener();
显示.addActionListener(listener);
录入.addActionListener(listener);
查询.addActionListener(listener);
删除.addActionListener(listener);
男.addActionListener(listen);
女.addActionListener(listen);
frame.setVisible(true);
}
//获取所有的数据
//
public static void getAllMessage(){
try {
//添加JDBC驱动
Class.forName("com.mysql.jdbc.Driver");
String url = "jdbc:mysql://localhost/test";
String user = "root";
String password = "root";
Connection connect = DriverManager.getConnection(url,user,password);
Statement stmt = connect.createStatement();
System.out.println("success to connect ");
//读取所有的数据
String sql1 = "select * from StudentSystem";
ResultSet rs = stmt.executeQuery(sql1);
System.out.println("学号t姓名t专业t年级t出生");
String lines = null;
while(rs.next()) {
System.out.print(rs.getString(1)+ "t");
System.out.print(rs.getString(2)+ "t");
System.out.print(rs.getString(3)+ "t");
System.out.print(rs.getString(4)+ "t");
System.out.print(rs.getString(5)+ "t");
System.out.println();
if(lines != null){
lines = lines + "学号__姓名__专业__年级__出生n" + rs.getString(1)+ " "+ rs.getString(2)+ " "+ rs.getString(3)
+ " "+ rs.getString(4)+ " "+ rs.getString(5)+ " " + "nn";
} else {
lines ="数据库中所有数据：nn" + "学号__姓名__专业__年级__出生n" + rs.getString(1)+ ""+ rs.getString(2)+ " "+ rs.getString(3)
+ " "+ rs.getString(4)+ " "+ rs.getString(5)+ " " + "n";
}
}
JOptionPane.showMessageDialog(null, lines , "显示",JOptionPane.INFORMATION_MESSAGE);
} catch (Exception e) {
e.printStackTrace();
}
}
public static void insert_Student(String str1,String str2,String str3,String str4,String str5){
try {
//添加JDBC驱动
Class.forName("com.mysql.jdbc.Driver");
String url = "jdbc:mysql://localhost/test";
String user = "root";
String password = "root";
//连接数据库
Connection connect = DriverManager.getConnection(url,user,password);
Statement stmt = connect.createStatement();
System.out.println("success to connect ");
String lines = null;
String sql = "select * from StudentSystem";//要执行的SQL
String sql2 = "delete from StudentSystem where id =?";
String sql3 = "insert into StudentSystem(id,name,study,grade,birthplace)VALUES(?,?,?,?,?)";//SQL命令
PreparedStatement pst = (PreparedStatement)connect.prepareStatement(sql3);
pst = connect.prepareStatement(sql3);
pst.setNString(1,str1);//1,2,3,为对应上面的参数，切记！！！！！这里”12“传给了第一个问号代表的 ID
pst.setString(2,str2);
pst.setString(3,str3);
pst.setString(4,str4);
pst.setString(5,str5);
pst.executeUpdate();
JOptionPane.showMessageDialog(null, "该次录入成功！！");
ResultSet rs = stmt.executeQuery(sql);
System.out.println("学号t姓名t专业t年级t出生");
while(rs.next()) {
System.out.print(rs.getString(1)+ "t");
System.out.print(rs.getString(2)+ "t");
System.out.print(rs.getString(3)+ "t");
System.out.print(rs.getString(4)+ "t");
System.out.print(rs.getString(5)+ "t");
System.out.println();
if(lines != null){
lines = lines + "学号__姓名__专业__年级__出生n" + rs.getString(1)+ " "+ rs.getString(2)+ " "+ rs.getString(3)
+ " "+ rs.getString(4)+ " "+ rs.getString(5)+ " " + "nn";
} else {
lines ="数据库中所有数据：nn" + "学号__姓名__专业__年级__出生n" + rs.getString(1)+ ""+ rs.getString(2)+ " "+ rs.getString(3)
+ " "+ rs.getString(4)+ " "+ rs.getString(5)+ " " + "n";
}
}
JOptionPane.showMessageDialog(null, lines , "显示",JOptionPane.INFORMATION_MESSAGE);
} catch (Exception e) {
e.printStackTrace();
}
}
public static void delete_Student(String str){
try {
//添加JDBC驱动
Class.forName("com.mysql.jdbc.Driver");
String url = "jdbc:mysql://localhost/test";
String user = "root";
String password = "root";
//连接数据库
Connection connect = DriverManager.getConnection(url,user,password);
Statement stmt = connect.createStatement();
System.out.println("success to connect ");
//**
String lines = null;
String sql = "select * from StudentSystem";//要执行的SQL
String sql2 = "delete from StudentSystem where id =?";
PreparedStatement pst = (PreparedStatement)connect.prepareStatement(sql2);
pst = connect.prepareStatement(sql2);
pst.setString(1,str);
pst.executeUpdate();
JOptionPane.showMessageDialog(null, "已删除该条记录", "删除" ,JOptionPane.INFORMATION_MESSAGE);
ResultSet rs = stmt.executeQuery(sql);
System.out.println("学号t姓名t专业t年级t出生");
while(rs.next()) {
System.out.print(rs.getString(1)+ "t");
System.out.print(rs.getString(2)+ "t");
System.out.print(rs.getString(3)+ "t");
System.out.print(rs.getString(4)+ "t");
System.out.print(rs.getString(5)+ "t");
System.out.println();
if(lines != null){
lines = lines + "学号__姓名__专业__年级__出生n" + rs.getString(1)+ " "+ rs.getString(2)+ " "+ rs.getString(3)
+ " "+ rs.getString(4)+ " "+ rs.getString(5)+ " " + "nn";
} else {
lines ="数据库中所有数据：nn" + "学号__姓名__专业__年级__出生n" + rs.getString(1)+ ""+ rs.getString(2)+ " "+ rs.getString(3)
+ " "+ rs.getString(4)+ " "+ rs.getString(5)+ " " + "n";
}
}
JOptionPane.showMessageDialog(null, lines , "显示",JOptionPane.INFORMATION_MESSAGE);
} catch (Exception e) {
e.printStackTrace();
}
}
}
以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持考高分网。
