modificationstu.java

一个球员管理系统

                                            .addGap(17, 17, 17)))
                                    .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
                                        .addGroup(layout.createSequentialGroup()
                                            .addGap(28, 28, 28)
                                            .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
                                                .addComponent(jLabel7)
                                                .addComponent(jLabel4)))
                                        .addGroup(layout.createSequentialGroup()
                                            .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
                                            .addComponent(jLabel8))))
                                .addGroup(layout.createSequentialGroup()
                                    .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
                                    .addComponent(jButton4, javax.swing.GroupLayout.PREFERRED_SIZE, 84, javax.swing.GroupLayout.PREFERRED_SIZE)))))
                    .addGroup(layout.createSequentialGroup()
                        .addGap(76, 76, 76)
                        .addComponent(jButton3, javax.swing.GroupLayout.PREFERRED_SIZE, 84, javax.swing.GroupLayout.PREFERRED_SIZE)))
                .addGap(6, 6, 6)
                .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
                    .addGroup(layout.createSequentialGroup()
                        .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING, false)
                            .addGroup(layout.createSequentialGroup()
                                .addGap(9, 9, 9)
                                .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING, false)
                                    .addComponent(jTextField5)
                                    .addComponent(jTextField3)
                                    .addComponent(jTextField1, javax.swing.GroupLayout.DEFAULT_SIZE, 126, Short.MAX_VALUE)))
                            .addGroup(layout.createSequentialGroup()
                                .addGap(11, 11, 11)
                                .addComponent(jTextField7)))
                        .addGap(34, 34, 34)
                        .addComponent(jButton1))
                    .addGroup(layout.createSequentialGroup()
                        .addGap(82, 82, 82)
                        .addComponent(jButton2, javax.swing.GroupLayout.PREFERRED_SIZE, 85, javax.swing.GroupLayout.PREFERRED_SIZE)))
                .addGap(29, 29, 29))
        );
        layout.setVerticalGroup(
            layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(layout.createSequentialGroup()
                .addGap(18, 18, 18)
                .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.TRAILING)
                    .addComponent(jButton1)
                    .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
                        .addComponent(jLabel1, javax.swing.GroupLayout.PREFERRED_SIZE, 31, javax.swing.GroupLayout.PREFERRED_SIZE)
                        .addComponent(jTextField1, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)))
                .addGap(24, 24, 24)
                .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
                    .addComponent(jTextField3, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
                    .addComponent(jLabel4)
                    .addComponent(jLabel3)
                    .addComponent(jTextField2, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE))
                .addGap(30, 30, 30)
                .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
                    .addComponent(jTextField5, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
                    .addComponent(jLabel7)
                    .addComponent(jLabel2)
                    .addComponent(jTextField4, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE))
                .addGap(30, 30, 30)
                .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
                    .addComponent(jTextField7, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
                    .addComponent(jLabel6)
                    .addComponent(jLabel8)
                    .addComponent(jTextField6, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE))
                .addGap(48, 48, 48)
                .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
                    .addComponent(jButton3)
                    .addComponent(jButton4)
                    .addComponent(jButton2))
                .addContainerGap(45, Short.MAX_VALUE))
        );
        pack();
    }// </editor-fold>//GEN-END:initComponents

    private void jButton3ActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_jButton3ActionPerformed
// 更新update 
        update();
    }//GEN-LAST:event_jButton3ActionPerformed

    private void jButton4ActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_jButton4ActionPerformed
// TODO 将在此处添加您的处理代码：
        clearForm();
                
    }//GEN-LAST:event_jButton4ActionPerformed

    private void jButton1ActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_jButton1ActionPerformed
// 首先查询出来 
         try{
                 String s;
                s=jTextField1.getText();
               Class.forName("com.microsoft.sqlserver.jdbc.SQLServerDriver").newInstance();
               String url="jdbc:sqlserver://127.0.0.1:1433;";
               Connection conn=DriverManager.getConnection(url,"sa","123");
                conn.setCatalog("data");
                 PreparedStatement pstmt = conn.prepareStatement("select name ,sex,birthday,home,shenjia,club from player" +
                " where  num=?");
                //将用户的名字添加到具体的sql语句中
                  pstmt.setString(1, s);
                  ResultSet res = pstmt.executeQuery(); 
                   if (!res.next()) {
                      JOptionPane.showMessageDialog(this, "编号错误，此球员不存在！", "错误提示",
                                      JOptionPane.ERROR_MESSAGE);
              }else {
                      
                      
                    jTextField2.setText(res.getString("name")); 
                    jTextField3.setText(res.getString("sex"));  
                    jTextField4.setText(res.getString("birthday"));
                    jTextField5.setText(res.getString("home"));  
                    jTextField6.setText(res.getString("shenjia"));  
                    jTextField7.setText(res.getString("club"));  

             }
      
              pstmt.close();
               conn.close();
    
              }catch (InstantiationException e) {
            System.out.println(e.getMessage());
            }catch (IllegalAccessException e) {
              System.out.println(e.getMessage());
              }catch (ClassNotFoundException e) {
             System.out.println(e.getMessage());
            }catch(SQLException e){
            System.out.println("Error Code "+ e.getErrorCode());
              System.out.println("Erroe MMessage="+e.getMessage());
           }
           catch(Exception e){
             e.printStackTrace();
             }
    }//GEN-LAST:event_jButton1ActionPerformed

    private void jButton2MouseClicked(java.awt.event.MouseEvent evt) {//GEN-FIRST:event_jButton2MouseClicked
// 返回主界面 
               MF.setVisible(true);
               this.setVisible(false);
    }//GEN-LAST:event_jButton2MouseClicked
    
    /**
     * @param args the command line arguments
     */
    public static void main(String args[]) {
        java.awt.EventQueue.invokeLater(new Runnable() {
            public void run() {
                new modificationstu().setVisible(true);
            }
        });
    }
    
    // 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.JButton jButton4;
    private javax.swing.JLabel jLabel1;
    private javax.swing.JLabel jLabel2;
    private javax.swing.JLabel jLabel3;
    private javax.swing.JLabel jLabel4;
    private javax.swing.JLabel jLabel6;
    private javax.swing.JLabel jLabel7;
    private javax.swing.JLabel jLabel8;
    private javax.swing.JTextField jTextField1;
    private javax.swing.JTextField jTextField2;
    private javax.swing.JTextField jTextField3;
    private javax.swing.JTextField jTextField4;
    private javax.swing.JTextField jTextField5;
    private javax.swing.JTextField jTextField6;
    private javax.swing.JTextField jTextField7;
    // 变量声明结束//GEN-END:variables
    
}