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1.首先我們建立一個產品類，這里我用product 然后建立他的構造方法和getter and setter方法，重寫 equals方法

package Table;

import java.sql.Date;

public class product {
    /** 商品編號*/
    private String productID;
    /** 商品名稱*/
    private String productName;
    /** 安全存量*/
    private float safeStock;
    /** 最后進貨日期*/
    private Date lastPurchaseDate;
    /** 最后銷售日期*/
    private Date lastDeliveryDate;
    /** 當前數量*/
    private float quantity;
    /** 建議購買價*/
    private float suggestBuyPrice;
    /** 建議銷售價*/
    private float suggestSalePrice;
public product() {
    super();
}

@Override

public boolean equals(Object arg0) {
    if( arg0 instanceof  product){
        product p=(product) arg0;
        if(p.productID.equals(this.productID))
            return true;
    }
    return false;


}

public String getProductID() {
    return productID;
}

public void setProductID(String productID) {
    this.productID = productID;
}

public String getProductName() {
    return productName;
}

public void setProductName(String productName) {
    this.productName = productName;
}

public float getSafeStock() {
    return safeStock;
}

public void setSafeStock(float safeStock) {
    this.safeStock = safeStock;
}

public Date getLastPurchaseDate() {
    return lastPurchaseDate;
}

public void setLastPurchaseDate(Date lastPurchaseDate) {
    this.lastPurchaseDate = lastPurchaseDate;
}

public Date getLastDeliveryDate() {
    return lastDeliveryDate;
}

public void setLastDeliveryDate(Date lastDeliveryDate) {
    this.lastDeliveryDate = lastDeliveryDate;
}

public float getQuantity() {
    return quantity;
}

public void setQuantity(float quantity) {
    this.quantity = quantity;
}

public float getSuggestBuyPrice() {
    return suggestBuyPrice;
}

public void setSuggestBuyPrice(float suggestBuyPrice) {
    this.suggestBuyPrice = suggestBuyPrice;
}

public float getSuggestSalePrice() {
    return suggestSalePrice;
}

public void setSuggestSalePrice(float suggestSalePrice) {
    this.suggestSalePrice = suggestSalePrice;
}

}

2.我們放置一個list來事先加載我們在數據庫中的東西

package Table;

import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement;
import java.util.ArrayList;


public class productlist {
    Connection conn=null;
    Statement stmt = null;  
        ResultSet rs = null; 
    ArrayList<product> ar=new ArrayList<product>();
    product product=new product();
    String url = "jdbc:sqlserver://localhost:1433;DatabaseName=ELMS;";//聲明端口和數據庫名字
    String sql = "select * from Product";//sql查詢語句；
    public productlist(){ 
        ar=getAllworh();//先把數據庫中的數據傳輸出來給ar；
    }
    public ArrayList getAllworh() {//取得數據庫中的數據放到ArrayList中
        ArrayList<product> ar=new ArrayList<product>();
        getconn();//鏈接數據庫
        if(conn!=null) {
            try {
                stmt=conn.createStatement();
                rs=stmt.executeQuery(sql);//執行語句
                product p;
                while(rs.next()) {
                    p=new product();
                    p.setProductID(rs.getString(1));
                    p.setProductName(rs.getString(2));
                    p.setSafeStock(rs.getFloat(3));
                    p.setLastPurchaseDate(rs.getDate(4));
                    p.setLastDeliveryDate(rs.getDate(5));
                    p.setQuantity(rs.getFloat(6));
                    p.setSuggestBuyPrice(rs.getFloat(7));
                    p.setSuggestSalePrice(rs.getFloat(8));
                    ar.add(p);
                    }
                } catch (SQLException e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
              } 
        }
        return ar;
    }
    public Object[][] listToArray(){//給數組賦值，方便表格操作
        Object[][] ps=new Object[100][8];
        Object[] os= ar.toArray();
        for(int i=0;i<os.length;i++){
        ps[i][0]=((product)os[i]).getProductID();
        ps[i][1]=((product)os[i]).getProductName();
        ps[i][2]=((product)os[i]).getSafeStock();
        ps[i][3]=((product)os[i]).getSuggestBuyPrice();
        ps[i][4]=((product)os[i]).getSuggestSalePrice();
        ps[i][5]=((product)os[i]).getQuantity();
        ps[i][6]=((product)os[i]).getLastPurchaseDate();
        ps[i][7]=((product)os[i]).getLastDeliveryDate();
//      product p=(product)os[i];
//      ps[i][0]=p.getProductID();
//      ps[i][1]=p.getProductName();
//      ps[i][2]=p.getSafeStock();
//      ps[i][3]=p.getSuggestBuyPrice();
//      ps[i][4]=p.getSuggestSalePrice();
//      ps[i][5]=p.getQuantity();
//      ps[i][6]=p.getLastPurchaseDate();
//      ps[i][7]=p.getLastDeliveryDate();
        }
        return  ps;
        }

    public void getconn() {//鏈接數據庫，我這鏈接的SQL server
         try {
                Class.forName("com.microsoft.sqlserver.jdbc.SQLServerDriver");
                //根據數據庫的不同，這行代碼都不同，在網上都能找到↑↑↑
                conn = DriverManager.getConnection(url, "sa", "135831");
            } catch (ClassNotFoundException e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
            } catch (SQLException e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
            }

    }
}

3.我將監聽和圖形互化界面放在了一起,我在代碼中闡述作用

package Table;
import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.Font;
import java.awt.Label;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.MouseEvent;
import java.awt.event.MouseListener;
import java.sql.Date;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement;
import java.text.SimpleDateFormat;

import javax.swing.Box;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JTable;
import javax.swing.JTextField;
import javax.swing.table.DefaultTableModel;
import javax.xml.crypto.Data;




public class Table  extends JFrame implements ActionListener,MouseListener{
//繼承了Jframe ，一個監聽，一個鼠標監聽
  int i;
  JTable table;//表格
  Object a[] [];//二維數組a
  Object[] title={"商品編號","商品名稱","安全存量","建議購買價",
            "建議銷售價","當前數量","最后進貨日期","最后送貨日期"};//表頭
  productlist pl=new productlist();
  JTextField JTproductID,JTproductName,JTsafeStock,JTlastPurchaseDate,JTlastDeliveryDate,
  JTquantity,JTsuggestBuyPrice,JTsuggestSalePrice;
  JButton AddButton,Moifty,Delete,Select;//設置一下
  Font Mfont=new Font("幼圓",Font.BOLD,14);//設置字體
  Color Mcolor=new Color(240,0,0);//設置顏色
  
 
  public  Table(){
      
    setTitle("商品管理系統");//標題
    setBounds(350, 150, 700, 750);//大小
    setVisible(true);//可見
    setDefaultCloseOperation(DISPOSE_ON_CLOSE);//關閉形式
    setLayout(new BorderLayout());//設置布局為border
    
    
    
    a=pl.listToArray();//將一維數組轉換成二維數組
    table=new JTable(a,title);//新建一個表格將二位數組和表頭數組放進去
    add(table,BorderLayout.NORTH);
    
    
    JPanel J1=new JPanel();//建立一個面板
    JTproductID=new JTextField(10);//建立每個屬性的TextField
    JTproductName=new JTextField(10);
    JTsafeStock=new JTextField(10);
    JTlastPurchaseDate=new JTextField(10);
    JTlastDeliveryDate=new JTextField(10);
    JTquantity=new JTextField(10);
    JTsuggestBuyPrice=new JTextField(10);
    JTsuggestSalePrice=new JTextField(10);
    
    Label la1=new Label("商品編號:");//顯示文字的label
    Label la2=new Label("商品名稱:");
    Label la3=new Label("安全存量:");
    Label la4=new Label("建議購買價:");
    Label la5=new Label("建議銷售價:");
    Label la6=new Label("當前數量:");
    Label la7=new Label("最后進貨日期:");
    Label la8=new Label("最后送貨日期:");
    
    
    la1.setForeground(Mcolor);//字體設置顏色
    la2.setForeground(Mcolor);
    la3.setForeground(Mcolor);
    la4.setForeground(Mcolor);
    la5.setForeground(Mcolor);
    la6.setForeground(Mcolor);
    la7.setForeground(Mcolor);
    la8.setForeground(Mcolor);
    
    J1.add(la1);//將文字label和TextField按照順序放到JPanel中
    J1.add(JTproductID);
    J1.add(la2);
    J1.add(JTproductName);
    J1.add(la3);
    J1.add(JTsafeStock);
    J1.add(la4);
    J1.add(JTsuggestBuyPrice);
    J1.add(la5);
    J1.add(JTsuggestSalePrice);
    J1.add(la6);
    J1.add(JTquantity);
    J1.add(la7);
    J1.add(JTlastPurchaseDate);
    J1.add(la8);
    J1.add(JTlastDeliveryDate);
    add(J1,BorderLayout.CENTER);//將j1 JPanel放到BorderLayout中間
    
    
    
    JPanel J2=new JPanel();//新建JPanel J2 用來放置按鈕
    AddButton=new JButton("新增");
    Delete=new JButton("刪除");
    Select=new JButton("查找");
    Moifty=new JButton("修改");
    AddButton.setFont(Mfont);//設置一下字體格式
    Delete.setFont(Mfont);
    Select.setFont(Mfont);
    Moifty.setFont(Mfont);
    J2.add(AddButton);
    J2.add(Delete);
    J2.add(Select);
    J2.add(Moifty);
    add(J2,BorderLayout.SOUTH);//將J2放到BorderLayout的南部（下方）
    
    Box box =Box.createVerticalBox();//新建一個盒子
    box.add(new JScrollPane(table));//放入Table （JScrollPane（滾動面板））
    box.add(J1);//放入J1
    box.add(J2);//放入J2
    add(box);//加入盒子
    
    AddButton.addActionListener(this);//添加各種監聽
    Delete.addActionListener(this);
    table.addMouseListener(this);
    Select.addActionListener(this);
    Moifty.addActionListener(this);
    
    validate();
  }
  public void SETtable() {
        //更新表格
        DefaultTableModel dtm = new DefaultTableModel();
        dtm.setDataVector(a, title);
        table.setModel(dtm);//設置表格模型

}
  public static void main(String[] args) {
    new Table();
}
@Override
public void actionPerformed(ActionEvent e) {
//  SimpleDateFormat aaa=new SimpleDateFormat("yyyy-mm-dd");
    // TODO Auto-generated method stub
    if(e.getSource()==AddButton){
        product pro=new product();//新建一個product對象，將JTextField中的數據放到該對象中
        pro.setProductID(JTproductID.getText().trim());
        pro.setProductName(JTproductName.getText().trim());
        pro.setSafeStock(Float.parseFloat(JTsafeStock.getText().trim()));//Float類型用parseFloat類型轉換一下
        pro.setLastPurchaseDate(Date.valueOf(JTlastPurchaseDate.getText().trim()));//Date類型用Date.valueof類型轉換一下
        pro.setLastDeliveryDate(Date.valueOf(JTlastDeliveryDate.getText().trim()));
        pro.setQuantity(Float.parseFloat(JTquantity.getText().trim()));
        pro.setSuggestBuyPrice(Float.parseFloat(JTsuggestBuyPrice.getText().trim()));
        pro.setSuggestSalePrice(Float.parseFloat(JTsuggestSalePrice.getText().trim()));

        String sql="insert into Product (ProductID,ProductName, SafeStock,
         LastPurchaseDate,LastDeliveryDate,Quantity,
         SuggestBuyPrice,SuggestSalePrice) values(?,?,?,?,?,?,?,?)";
         //“？” 是占位符，我們待會要往里添加數據
        pl.getconn();//鏈接數據庫
        try {
            PreparedStatement statement=pl.conn.prepareStatement(sql);
            //準備一個PreparedStatement ，開始往里面賦值
            statement.setString(1, pro.getProductID());
            statement.setString(2, pro.getProductName());
            statement.setFloat(3, pro.getSafeStock());
            statement.setDate(4, pro.getLastDeliveryDate());
            statement.setDate(5, pro.getLastPurchaseDate());
            statement.setFloat(6, pro.getQuantity());
            statement.setFloat(7, pro.getSuggestBuyPrice());
            statement.setFloat(8, pro.getSuggestSalePrice());
            int i=statement.executeUpdate();//執行更新 返回的是幾行瘦影響
            if(i==1) {//因為我們會影響一行，所以條件是i==1
                System.out.println("添加成功");
            }
            else {
                System.out.println("添加失敗");
            }
            
        } catch (SQLException e1) {
            // TODO Auto-generated catch block
            e1.printStackTrace();
        }
        pl.ar=pl.getAllworh();//重新獲取數據庫中的數據
        a=pl.listToArray();//將數組中的數據重新更新一遍
        SETtable();
        
        
    }
    if(e.getSource()==Delete){
        String sql="delete from Product where ProductID = ?";
        pl.getconn();
        try {
            PreparedStatement statement=pl.conn.prepareStatement(sql);
            String No=JTproductID.getText().trim();
            //取得productID文本的文本，我們要用這個文本來查詢整個物品↑↑
            statement.setString(1,No);//給第一個賦值
            int i=statement.executeUpdate();//執行語句
            if(i==1) {
                System.out.println("刪除成功");
            }
            else {
                System.out.println("刪除失敗");
            }
        } catch (SQLException e1) {
            // TODO Auto-generated catch block
            e1.printStackTrace();
        }
        pl.ar=pl.getAllworh();
        a=pl.listToArray();
        SETtable();

    }
    if(e.getSource()==Select) {
        pl.getconn();
        String sql="select *from Product where ProductID=?";
        try {
            PreparedStatement statement=pl.conn.prepareStatement(sql);
            statement.setString(1, JTproductID.getText().trim());//設置搜索id
            ResultSet rs=statement.executeQuery();
            while (rs.next()) {//轉換就用String.valueOf
                JTproductID.setText((String)rs.getString(1));
                JTproductName.setText((String)rs.getString(2));
                JTsafeStock.setText(String.valueOf(rs.getString(3)));
                JTsuggestBuyPrice.setText(String.valueOf(rs.getString(4)));
                JTsuggestSalePrice.setText(String.valueOf(rs.getString(5)));
                JTquantity.setText(String.valueOf(rs.getString(6)));
                JTlastDeliveryDate.setText(String.valueOf(rs.getString(7)));
                JTlastPurchaseDate.setText(String.valueOf(rs.getString(8)));
            }
        } catch (SQLException e1) {
            // TODO Auto-generated catch block
            e1.printStackTrace();
        }
        
        
        
    }
    if(e.getSource()==Moifty) {
        String sql= "update Product set ProductName=?,SafeStock=?,LastPurchaseDate=?,LastDeliveryDate=?,Quantity=?,SuggestBuyPrice=?,SuggestSalePrice=? where ProductID=?";
        try {
            PreparedStatement statement=pl.conn.prepareStatement(sql);
            statement.setString(1, JTproductName.getText().trim());
            statement.setString(2, JTsafeStock.getText().trim());
            statement.setString(3, JTlastPurchaseDate.getText().trim());
            statement.setString(4, JTlastDeliveryDate.getText().trim());
            statement.setString(5, JTquantity.getText().trim());
            statement.setString(6, JTsuggestBuyPrice.getText().trim());
            statement.setString(7, JTsuggestSalePrice.getText().trim());
            statement.setString(8, JTproductID.getText().trim());
            int i=statement.executeUpdate();
            if (i==1) {
                System.out.println("修改成功");
            }
            else {
                System.out.println("修改失敗");
            }
        } catch (SQLException e1) {
            // TODO Auto-generated catch block
            e1.printStackTrace();
        }
            pl.ar=pl.getAllworh();
            a=pl.listToArray();
            SETtable();
        
    }
    
}
@Override
public void mouseClicked(MouseEvent arg0) {
    // TODO Auto-generated method stub
    i=table.getSelectedRow();//獲取點擊的第幾行，將值復制給i
    JTproductID.setText((String)a[i][0]);
    JTproductName.setText((String)a[i][1]);
    //兩種方法都可賦值
    String float1 = String.valueOf(table.getValueAt(i,2));
    JTsafeStock.setText(float1+"");
    JTsuggestBuyPrice.setText(String.valueOf(a[i][3]));
    JTsuggestSalePrice.setText(String.valueOf(a[i][4]));
    JTquantity.setText(String.valueOf(a[i][5]));
    JTlastDeliveryDate.setText(String.valueOf(a[i][6]));
    JTlastPurchaseDate.setText(String.valueOf(a[i][7]));
    
    
}
@Override
public void mouseEntered(MouseEvent arg0) {
    // TODO Auto-generated method stub
    
}
@Override
public void mouseExited(MouseEvent arg0) {
    // TODO Auto-generated method stub
    
}
@Override
public void mousePressed(MouseEvent arg0) {
    // TODO Auto-generated method stub
    
}
@Override
public void mouseReleased(MouseEvent arg0) {
    // TODO Auto-generated method stub
    
}

}

4.形成的界面

(5@TL)J9IO0N2VY~LYA572H.png

PS：注意如果賦值代碼，包名Table ，自己修改自己的數據庫名字，表名字，列的名字！

三个男躁一个女,国精产品一区一手机的秘密,麦子交换系列最经典十句话,欧美国产综合欧美视频

Java鏈接數據庫并且在表格的基礎上操作庫內數據

Java鏈接數據庫并且在表格的基礎上操作庫內數據

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三个男躁一个女,国精产品一区一手机的秘密,麦子交换系列最经典十句话,欧美 国产 综合 欧美 视频

Java鏈接數據庫并且在表格的基礎上操作庫內數據

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三个男躁一个女,国精产品一区一手机的秘密,麦子交换系列最经典十句话,欧美国产综合欧美视频