urlconnectframe.java

java 小型系统连接池参照适用于中小型网站

package ntis.com.util;

import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import javax.swing.border.*;
import java.net.*;
import java.io.*;
import java.util.Properties;

public class URLConnectFrame extends JFrame {
  JPanel contentPane;
  JTextField urlField = new JTextField();
  JPanel jPanel1 = new JPanel();
  JScrollPane jScrollPane1 = new JScrollPane();
  JTextArea messageArea = new JTextArea();
  JButton conButton = new JButton();
  GridBagLayout gridBagLayout1 = new GridBagLayout();
  TitledBorder titledBorder1;

  /**僼儗乕儉偺峔抸*/
  public URLConnectFrame() {
    enableEvents(AWTEvent.WINDOW_EVENT_MASK);
    try {
      jbInit();
    }
    catch(Exception e) {
      e.printStackTrace();
    }
  }
  /**僐儞億乕僱儞僩偺弶婜壔*/
  private void jbInit() throws Exception  {
    titledBorder1 = new TitledBorder("");
    //setIconImage(Toolkit.getDefaultToolkit().createImage(URLConnectFrame.class.getResource("[Your Icon]")));
    contentPane = (JPanel) this.getContentPane();
    contentPane.setLayout(gridBagLayout1);
    this.setSize(new Dimension(400, 300));
    this.setTitle("URL Connect");
    conButton.setText("愙懕");
    conButton.addMouseListener(new java.awt.event.MouseAdapter() {
      public void mouseClicked(MouseEvent e) {
        conButton_mouseClicked(e);
      }
    });
    jPanel1.setBorder(titledBorder1);
    contentPane.add(urlField, new GridBagConstraints(0, 0, 1, 1, 1.0, 0.0
            ,GridBagConstraints.CENTER, GridBagConstraints.HORIZONTAL, new Insets(0, 0, 0, 0), 0, 0));
    contentPane.add(jPanel1, new GridBagConstraints(1, 0, 1, 2, 0.0, 1.0
            ,GridBagConstraints.CENTER, GridBagConstraints.VERTICAL, new Insets(0, 0, 0, 0), 0, 0));
    jPanel1.add(conButton, null);
    contentPane.add(jScrollPane1, new GridBagConstraints(0, 1, 1, 1, 1.0, 1.0
            ,GridBagConstraints.CENTER, GridBagConstraints.BOTH, new Insets(0, 0, 0, 0), 0, 0));
    jScrollPane1.getViewport().add(messageArea, null);
  }
  /**僂傿儞僪僂偑暵偠傜傟偨偲偒偵廔椆偡傞傛偆偵僆乕僶乕儔僀僪*/
  protected void processWindowEvent(WindowEvent e) {
    super.processWindowEvent(e);
    if (e.getID() == WindowEvent.WINDOW_CLOSING) {
      System.exit(0);
    }
  }

  void conButton_mouseClicked(MouseEvent e) {
    HttpURLConnection _con = null;
    InputStream _in = null;
    int _len = 0;
    byte[] bBuff = new byte[1024];

    Properties p = System.getProperties();
    p.put("proxyHost", "cache.ntis.nec.co.jp");
    p.put("proxyPort", "8080");
    p.put("proxySet", "true");
    System.setProperties(p);

    try {
      _con = (HttpURLConnection)(new URL(urlField.getText())).openConnection();
      _in  = _con.getInputStream();

      while((_len = _in.read(bBuff)) != -1) {
        messageArea.append(new String(bBuff, 0, _len) + "\n");
      }
    }
    catch(Exception ex) {
      ex.printStackTrace();
    }
  }
}