Java tutorial
/* * To change this license header, choose License Headers in Project Properties. * To change this template file, choose Tools | Templates * and open the template in the editor. */ package buysell; import com.mongodb.BasicDBObject; import com.mongodb.DB; import com.mongodb.DBCollection; import com.mongodb.DBCursor; import com.mongodb.MongoClient; import javax.swing.JOptionPane; /** * * @author snehal */ public class login extends javax.swing.JFrame { /** * Creates new form login */ public login() { initComponents(); String username = jTextField1.getText().toString(); String upasswd = jPasswordField1.getText().toString(); } /** * This method is called from within the constructor to initialize the form. * WARNING: Do NOT modify this code. The content of this method is always * regenerated by the Form Editor. */ @SuppressWarnings("unchecked") // <editor-fold defaultstate="collapsed" desc="Generated Code">//GEN-BEGIN:initComponents private void initComponents() { jLabel1 = new javax.swing.JLabel(); jLabel2 = new javax.swing.JLabel(); jTextField1 = new javax.swing.JTextField(); loginS = new javax.swing.JButton(); jPasswordField1 = new javax.swing.JPasswordField(); setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE); jLabel1.setText("name"); jLabel2.setText("password"); loginS.setText("log in"); loginS.addActionListener(new java.awt.event.ActionListener() { public void actionPerformed(java.awt.event.ActionEvent evt) { loginSActionPerformed(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().addGap(47, 47, 47) .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.TRAILING) .addComponent(jLabel2).addComponent(jLabel1)) .addGap(94, 94, 94) .addGroup(layout .createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING, false) .addComponent(jTextField1).addComponent(jPasswordField1, javax.swing.GroupLayout.DEFAULT_SIZE, 165, Short.MAX_VALUE))) .addGroup(layout.createSequentialGroup().addGap(135, 135, 135).addComponent(loginS))) .addContainerGap(26, Short.MAX_VALUE))); layout.setVerticalGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING) .addGroup(layout.createSequentialGroup().addGap(73, 73, 73).addGroup(layout .createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE).addComponent(jLabel1) .addComponent(jTextField1, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)) .addGap(32, 32, 32) .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE) .addComponent(jLabel2).addComponent(jPasswordField1, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)) .addGap(47, 47, 47).addComponent(loginS).addContainerGap(65, Short.MAX_VALUE))); pack(); }// </editor-fold>//GEN-END:initComponents private void loginSActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_loginSActionPerformed // TODO add your handling code here: shopping sh1 = new shopping(); try { MongoClient mongoClient = new MongoClient("localhost", 27017); DB db = mongoClient.getDB("snehal"); System.out.println("Connect to database successfully"); DBCollection coll = db.getCollection("user"); System.out.println("Collection created successfully"); String name = jTextField1.getText().toString(); String passwd = jPasswordField1.getText().toString(); BasicDBObject searchQuery = new BasicDBObject(); searchQuery.put("name", name); searchQuery.put("passwd", passwd); DBCursor cursor = coll.find(searchQuery); int i = 0; while (cursor.hasNext()) { i = 1; System.out.println(cursor.next()); } if (i == 0) { JOptionPane.showMessageDialog(null, "user name or passwod is wrong"); } else { System.out.println("user get"); sh1.setVisible(true); dispose(); } System.out.println("Document inserted successfully"); } catch (NumberFormatException e) { System.out.println(); } }//GEN-LAST:event_loginSActionPerformed /** * @param args the command line arguments */ public static void main(String args[]) { /* Set the Nimbus look and feel */ //<editor-fold defaultstate="collapsed" desc=" Look and feel setting code (optional) "> /* If Nimbus (introduced in Java SE 6) is not available, stay with the default look and feel. * For details see http://download.oracle.com/javase/tutorial/uiswing/lookandfeel/plaf.html */ try { for (javax.swing.UIManager.LookAndFeelInfo info : javax.swing.UIManager.getInstalledLookAndFeels()) { if ("Nimbus".equals(info.getName())) { javax.swing.UIManager.setLookAndFeel(info.getClassName()); break; } } } catch (ClassNotFoundException ex) { java.util.logging.Logger.getLogger(login.class.getName()).log(java.util.logging.Level.SEVERE, null, ex); } catch (InstantiationException ex) { java.util.logging.Logger.getLogger(login.class.getName()).log(java.util.logging.Level.SEVERE, null, ex); } catch (IllegalAccessException ex) { java.util.logging.Logger.getLogger(login.class.getName()).log(java.util.logging.Level.SEVERE, null, ex); } catch (javax.swing.UnsupportedLookAndFeelException ex) { java.util.logging.Logger.getLogger(login.class.getName()).log(java.util.logging.Level.SEVERE, null, ex); } //</editor-fold> /* Create and display the form */ java.awt.EventQueue.invokeLater(new Runnable() { public void run() { new login().setVisible(true); } }); } // Variables declaration - do not modify//GEN-BEGIN:variables private javax.swing.JLabel jLabel1; private javax.swing.JLabel jLabel2; private javax.swing.JPasswordField jPasswordField1; private javax.swing.JTextField jTextField1; public static javax.swing.JButton loginS; // End of variables declaration//GEN-END:variables }