chaxun.java

管理员及学生身份 图书检索与图书插入删除

/*
 * Chaxun.java
 *
 * Created on 2008年1月14日, 上午9:33
 */

package book;
import java.sql.*;
import java.sql.Connection;
import javax.swing.JOptionPane;
import javax.swing.JTable;
import javax.swing.table.DefaultTableModel;
import javax.swing.*;

public class Chaxun extends javax.swing.JFrame {    
    Database db=new Database();
    Connection con;
    Statement stmt;
    ResultSet rs;
    String book_no;
    String book_name;
    String writer;
    String printer;
    String details;
    String category;
    String[] column={"书号", "书名", "作者", "出版社", "详细信息", "分类"};
    DefaultTableModel dm=new DefaultTableModel(column, 0){};
    String sql="select * from book_xxxx";
    
    public Chaxun() {
        initComponents(); 
        String f=this.Xianshi(sql,jTable1,dm);
        if(f=="go on"){ }
        else{
            JOptionPane.showMessageDialog(null,"加载数据失败"+f);
        }
    }  
   
    public void Shuaxin(){
        String sql="select * from book_xxxx";
        String f=this.Xianshi(sql,jTable1,dm);
        if(f=="go on"){ }
        else{
            JOptionPane.showMessageDialog(null,"加载数据失败"+f);
        }
    }
    public String Xianshi(String sql,JTable table,DefaultTableModel dm){
       int r=table.getRowCount();
        String rturn=db.link();
        String f="";
        if(rturn=="y"){
        try{
            ResultSet rs=db.getResult(sql);
            while(rs.next()) {
                    book_no=rs.getString(1);
                    book_name=rs.getString(2);
                    writer=rs.getString(3);
                    printer=rs.getString(4);
                    details=rs.getString(5);
                    category=rs.getString(6);
                    Object[] row={book_no,book_name,writer,printer,details,category};
                    dm.addRow(row);
                }
                table.setModel(dm);
                table.updateUI();
                f="go on";
            }catch(SQLException e){
                f=e.toString();
            } 
            finally{db.cutlink();}
        }
        else
        {
            JOptionPane.showMessageDialog(null,rturn);
        }
        return f;
    } 
  
    public String del_book(JTable table,DefaultTableModel dm){
      String f="";  
      try{
          db.link();
          int del_row=table.getSelectedRow();
          String ID=table.getValueAt(del_row,0).toString();
          String sql="delete from book_jbxx where book_no ='"+ID+"'";
           // System.out.println(sql);
           stmt.execute(sql);
           JOptionPane.showMessageDialog(null,"确认要删除记录吗？");
           dm.removeRow(del_row);
           table.updateUI();
           f="y";
      }catch(Exception e){f=e.toString();}
      finally{
          db.cutlink();
      }
      return f;
    }
     
  void Chaxunbutton(){
      String sql="select * from book_xxxx";  
      String limit1=jComboBox1.getSelectedItem().toString();
        if(limit1=="书名") sql+=" where book_name ";
        if(limit1=="书号") sql+=" where book_no ";
        if(limit1=="作者") sql+=" where writer ";
        if(limit1=="出版社") sql+=" where printer ";
        if(limit1=="分类")  sql+=" where category ";
        String limit=this.jTextField3.getText().toString();
        String limit2=jComboBox2.getSelectedItem().toString();
        if(limit2=="前方一致") sql+="like '"+limit+"%'";
        if(limit2=="中间一致") sql+="like '%"+limit+"%'";
        if(limit2=="后方一致") sql+="like '%"+limit+"'";
        if(limit2=="完全一致") sql+="= '"+limit+"'";
        String f=this.Xianshi(sql,jTable1,dm);
        if(f=="go on"){ }
        else{
            JOptionPane.showMessageDialog(null,"加载数据失败"+f);
        }
 }    
    // <editor-fold defaultstate="collapsed" desc=" 生成的代码 ">//GEN-BEGIN:initComponents
    private void initComponents() {
        jComboBox1 = new javax.swing.JComboBox();
        jLabel3 = new javax.swing.JLabel();
        jLabel4 = new javax.swing.JLabel();
        jTextField3 = new javax.swing.JTextField();
        jButton3 = new javax.swing.JButton();
        jButton1 = new javax.swing.JButton();
        jScrollPane1 = new javax.swing.JScrollPane();
        jTable1 = new javax.swing.JTable();
        jComboBox2 = new javax.swing.JComboBox();
        jButton2 = new javax.swing.JButton();

        setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);
        jComboBox1.setModel(new javax.swing.DefaultComboBoxModel(new String[] { "\u4e66\u540d", "\u4e66\u53f7", "\u4f5c\u8005", "\u51fa\u7248\u793e", "\u5206\u7c7b" }));

        jLabel3.setText("\u68c0\u7d22\u7ed3\u679c\uff1a");

        jLabel4.setText("\u5173\u952e\u5b57\uff1a");

        jButton3.setText("\u67e5\u8be2");
        jButton3.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                jButton3ActionPerformed(evt);
            }
        });

        jButton1.setText("\u9000\u51fa");
        jButton1.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                jButton1ActionPerformed(evt);
            }
        });

        jTable1.setModel(new javax.swing.table.DefaultTableModel(
            new Object [][] {
                {null, null, null, null},
                {null, null, null, null},
                {null, null, null, null},
                {null, null, null, null}
            },
            new String [] {
                "Title 1", "Title 2", "Title 3", "Title 4"
            }
        ));
        jScrollPane1.setViewportView(jTable1);

        jComboBox2.setModel(new javax.swing.DefaultComboBoxModel(new String[] { "\u524d\u65b9\u4e00\u81f4", "\u4e2d\u95f4\u4e00\u81f4", "\u540e\u65b9\u4e00\u81f4", "\u5b8c\u5168\u4e00\u81f4" }));

        jButton2.setText("\u5237\u65b0");
        jButton2.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                jButton2ActionPerformed(evt);
            }
        });

        javax.swing.GroupLayout layout = new javax.swing.GroupLayout(getContentPane());
        getContentPane().setLayout(layout);
        layout.setHorizontalGroup(
            layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(layout.createSequentialGroup()
                .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
                    .addGroup(layout.createSequentialGroup()
                        .addContainerGap()
                        .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
                            .addGroup(javax.swing.GroupLayout.Alignment.TRAILING, layout.createSequentialGroup()
                                .addComponent(jComboBox1, javax.swing.GroupLayout.PREFERRED_SIZE, 65, javax.swing.GroupLayout.PREFERRED_SIZE)
                                .addGap(17, 17, 17)
                                .addComponent(jComboBox2, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
                                .addGap(31, 31, 31)
                                .addComponent(jLabel4)
                                .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
                                .addComponent(jTextField3, javax.swing.GroupLayout.PREFERRED_SIZE, 129, javax.swing.GroupLayout.PREFERRED_SIZE))
                            .addGroup(javax.swing.GroupLayout.Alignment.TRAILING, layout.createSequentialGroup()
                                .addComponent(jButton2)
                                .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
                                .addComponent(jButton3)
                                .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)))
                        .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
                        .addComponent(jButton1))
                    .addGroup(layout.createSequentialGroup()
                        .addContainerGap()
                        .addComponent(jLabel3))
                    .addComponent(jScrollPane1, javax.swing.GroupLayout.PREFERRED_SIZE, 460, javax.swing.GroupLayout.PREFERRED_SIZE))
                .addContainerGap(20, Short.MAX_VALUE))
        );
        layout.setVerticalGroup(
            layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(layout.createSequentialGroup()
                .addGap(18, 18, 18)
                .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
                    .addComponent(jComboBox1, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
                    .addComponent(jComboBox2, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
                    .addComponent(jLabel4, javax.swing.GroupLayout.PREFERRED_SIZE, 23, javax.swing.GroupLayout.PREFERRED_SIZE)
                    .addComponent(jTextField3, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE))
                .addGap(23, 23, 23)
                .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
                    .addComponent(jButton2)
                    .addComponent(jButton3)
                    .addComponent(jButton1))
                .addGap(19, 19, 19)
                .addComponent(jLabel3)
                .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
                .addComponent(jScrollPane1, javax.swing.GroupLayout.PREFERRED_SIZE, 265, javax.swing.GroupLayout.PREFERRED_SIZE)
                .addContainerGap())
        );
        pack();
    }// </editor-fold>//GEN-END:initComponents

    private void jButton2ActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_jButton2ActionPerformed
// TODO 将在此处添加您的处理代码：刷新
        dm.setRowCount(0);
        Shuaxin();
    }//GEN-LAST:event_jButton2ActionPerformed

    private void jButton1ActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_jButton1ActionPerformed
// TODO 将在此处添加您的处理代码：退出
       int n= JOptionPane.showConfirmDialog(jFrame,"确定退出吗？","退出...",JOptionPane.YES_NO_OPTION);
       if(n == JOptionPane.YES_OPTION)
           this.hide();
        else if(n == JOptionPane.NO_OPTION){}  
    }//GEN-LAST:event_jButton1ActionPerformed

    private void jButton3ActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_jButton3ActionPerformed
// TODO 将在此处添加您的处理代码：查询
       // dm=new DefaultTableModel(column, 0){};
        
        //jTable1.setModel(dm);
        dm.setRowCount(0);
       // jTable1.updateUI();
        Chaxunbutton();   
    }//GEN-LAST:event_jButton3ActionPerformed
 
    
    // 变量声明 - 不进行修改//GEN-BEGIN:variables
    private javax.swing.JButton jButton1;
    private javax.swing.JButton jButton2;
    private javax.swing.JButton jButton3;
    private javax.swing.JComboBox jComboBox1;
    private javax.swing.JComboBox jComboBox2;
    private javax.swing.JLabel jLabel3;
    private javax.swing.JLabel jLabel4;
    private javax.swing.JScrollPane jScrollPane1;
    private javax.swing.JTable jTable1;
    private javax.swing.JTextField jTextField3;
    // 变量声明结束//GEN-END:variables
    JFrame jFrame;
}