JAVA学生宿舍管理系统
分为三大类land.java (登陆界面)system.java (系统管理界面)sql.java （数据库操作，包括连接、断开、增删改查等操作）一、登陆界面及代码主要代码：登陆按钮事件public void actionPerformed(ActionEvent e) {// TODO Auto-generated method stubif((JButton)e.ge...
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需要的工具
1.SQL Server
2.Eclipse
3.JDBC连接数据库驱动
https://download.microsoft.com/download/A/F/B/AFB381FF-7037-46CE-AF9B-6B1875EA81D7/sqljdbc_6.0.8112.200_chs.exe
功能实现
分为三大类
1.land.java (登陆界面)
2.system.java (系统管理界面)
3.sql.java （数据库操作，包括连接、断开、增删改查等操作）
一、登陆界面及代码
部分代码：
登陆按钮事件
public void actionPerformed(ActionEvent e) {
// TODO Auto-generated method stub
if((JButton)e.getSource()== buttonLand)
{
String name = textName.getText().trim();
String password = String.valueOf(textPassword.getPassword()).trim();
int num = sq.landing(name, password);
if(num==1)
{
JOptionPane.showMessageDialog(frame, "欢迎进入学生宿舍管理系统!","提示：",JOptionPane.PLAIN_MESSAGE);
system system = new system();
frame.dispose();
}
else
{
JOptionPane.showMessageDialog(frame, "账号或者密码错误！","提示：",JOptionPane.ERROR_MESSAGE);
}
}
}
二、系统管理界面及代码**（这里只添加了俩个表，多少表都是一样的道理**）
增加数据：点击增加按钮会出现一空白行，填写完点击保存即可
保存（更新）数据：直接在表中进行相应的操作，再点击保存即可
删除数据：选择某行，点击删除按钮即可
部分代码：
//--------------------------------------按钮事件--------------------------------
@Override
public void actionPerformed(ActionEvent e) {
// TODO Auto-generated method stub
//------------------------------- 删除-----------------------------
String tableName = null;
String key1 = null;
if((JButton)e.getSource()==buttonDelete)
{ if(paneParent.getSelectedIndex()==1)
{
tableName = "学生信息表";
key1 = "sno";
}
if(paneParent.getSelectedIndex()==2)
{
tableName = "宿舍信息表";
key1 = "dno";
}
int row = table.getSelectedRow();
if(row!=-1)
{
String key2 = (String) tableModel.getValueAt(row, 0);
int result = JOptionPane.showConfirmDialog(null, "确定要删除吗？","请确认",JOptionPane.YES_NO_OPTION);
if(result==JOptionPane.OK_OPTION)
{
String sql = "delete from "+tableName+" where "+key1+"="+key2;
int num = sq.delete(sql);
if(num>0)
{
tableModel.removeRow(row);
}
}
}
else
{
JOptionPane.showMessageDialog(null, "请选择要删除的行！","提示：",JOptionPane.ERROR_MESSAGE);
}
}
//------------------------------保存------------------------
if((JButton)e.getSource()==buttonSave)
{
int result = JOptionPane.showConfirmDialog(null, "请确认数值已经更改，否则保存无效","请确认",JOptionPane.YES_NO_OPTION);
if(result==JOptionPane.OK_OPTION)
{
int row = table.getRowCount();
int column = table.getColumnCount();
String[][]valueRow= new String[row][column];
String[] sqlvalue = new String[row];
for(int i = 0; i < row; i++)
{
for(int j = 0; j < column; j++)
{
valueRow[i][j] = table.getValueAt(i, j).toString();
}
}
if(paneParent.getSelectedIndex()==1)
{
for(int i =0;i<row;i++)
{
String sql = "insert into 学生信息表"+" values ("+valueRow[i][0].toString()+","+valueRow[i][1].toString()+","+valueRow[i][2].toString()+","+valueRow[i][3].toString()+","+valueRow[i][4].toString()+","+valueRow[i][5].toString()+")";
sqlvalue[i]=sql.toString();
}
data = sq.Save(sqlvalue,"学生信息表",row, column);
tableModel.setDataVector(data,dataTitle);
}
if(paneParent.getSelectedIndex()==2)
{
for(int i =0;i<row;i++)
{
String sql = "insert into 宿舍信息表"+" values ("+valueRow[i][0].toString()+","+valueRow[i][1].toString()+")";
sqlvalue[i]=sql.toString();
}
data = sq.Save(sqlvalue,"宿舍信息表",row, column);
tableModel.setDataVector(data,TitleDormitor);
}
}
}
//------------------------------增加---------------------------
if((JButton)e.getSource()==buttonIncrease)
{
tableModel.addRow(new Vector<>());
}
}
三、sql.java （重要）
public class SQL {
public Connection conn;
public Statement st;
public ResultSet rs;
//----------------------------获取链接--------------------------------
public Connection getConn() throws SQLException, ClassNotFoundException
{
String driverClassName = "com.microsoft.sqlserver.jdbc.SQLServerDriver";
String url = "jdbc:sqlserver://localhost:1433;databaseName=学习宿舍";
//：1433为数据库默认端口号，学习宿舍为数据库名字
String user = "sa"; //登录用户名
String password = "123456"; //登录密码
try {
Class.forName(driverClassName);
conn = DriverManager.getConnection(url, user, password);
System.out.println("数据库连接成功");
} catch (SQLException ex1)
{
System.out.println("数据库连接失败");
}
return conn;
}
//-----------------------------------关闭链接----------------------------------
public void Close()
{
try {
rs.close();
} catch (SQLException e) {
e.printStackTrace();
}
try {
st.close();
} catch (SQLException e1) {
e1.printStackTrace();
}
try {
conn.close();
} catch (SQLException e) {
e.printStackTrace();
}
}
//----------------------------------------登陆---------------------------------
public int landing(String name1,String password1)
{
int num = 0;
String sql = "select *from 用户表";
try{
getConn();
st = conn.createStatement();
rs = st.executeQuery(sql);
while(rs.next())
{
String name = rs.getString(1).trim();
String password = rs.getString(2).trim();
if(name.equals(name1)&&password.equals(password1))
{
num = 1;
}
}
}catch (SQLException e) {
// TODO: handle exception
} catch (ClassNotFoundException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
Close();
return num;
}
//--------------------------------查询-------------------------------
public Vector<Vector<Object>> query(String tableName,int column)
{
int num = 0;
String sql = "select *from "+tableName;
Vector<Vector<Object>> data = new Vector<Vector<Object>>();
try{
getConn();
st = conn.createStatement();
rs=st.executeQuery(sql);
while(rs.next())
{
Vector<Object> rowdata = new Vector<Object>();
for(num=1;num<=column;num++)
{
rowdata.add(rs.getString(num));
}
data.add(rowdata);
}
}catch(SQLException ex1)
{
System.out.println("失败"+ex1);
} catch (ClassNotFoundException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
Close();
return data;
}
//---------------------------------------删除----------------------------------
public int delete(String sql)
{
int num = 0;
try{
getConn();
st = conn.createStatement();
num = st.executeUpdate(sql);
}catch (SQLException e) {
// TODO: handle exception
} catch (ClassNotFoundException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
Close();
return num;
}
//-------------------------------------保存-------------------------------------
public Vector<Vector<Object>> Save(String[] sqlvalue,String tableName,int row,int column)
{
Vector<Vector<Object>> data = new Vector<Vector<Object>>();
try{
getConn();
st = conn.createStatement();
st.executeUpdate("delete from "+tableName);
for(int i =0;i<row;i++)
{
st.executeUpdate(sqlvalue[i].toString());
}
data = query(tableName, column);
}catch (SQLException e) {
// TODO: handle exception
} catch (ClassNotFoundException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
return data;
}
}
数据库连接账号密码及表名
**
这个是数据库的连接账号和密码123456
这个是用户表结构和登陆账号和密码（可自行修改）
**
宿舍信息表结构**
**
学生信息表结构**
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