JAVA学生宿舍管理系统

╰+哭是因爲堅強的太久メ 2021-09-22 19:22 427阅读 0赞

**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**  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzM2ODY4OTUx_size_16_color_FFFFFF_t_70]

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

![在这里点插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzM2ODY4OTUx_size_16_color_FFFFFF_t_70 1]![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzM2ODY4OTUx_size_16_color_FFFFFF_t_70 2]  
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  
![这个是数据库的连接账号和密码][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzM2ODY4OTUx_size_16_color_FFFFFF_t_70 3]

**这个是用户表结构和登陆账号和密码（可自行修改）**  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzM2ODY4OTUx_size_16_color_FFFFFF_t_70 4]

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzM2ODY4OTUx_size_16_color_FFFFFF_t_70 5]

\*\*

**宿舍信息表结构**\*\*  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzM2ODY4OTUx_size_16_color_FFFFFF_t_70 6]

\*\*

**学生信息表结构**\*\*  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzM2ODY4OTUx_size_16_color_FFFFFF_t_70 7]

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