BlogJava-谷文天空-文章分类-java

Eclipse+MyEclipse+Tomcat/JBoss配置手記

lcgxc — Mon, 27 Aug 2007 08:27:00 GMT

http://blog.csdn.net/success_dream/archive/2007/03/03/1519989.aspx

lcgxc 2007-08-27 16:27 发表评论

windows xp下jsp连接sql 2000 的问题

lcgxc — Mon, 16 Jul 2007 04:48:00 GMT

在winxp下需将sql 2000的补丁sp3 和sp4打上。需要注意：下载这两个补丁后。先解压缩，然后找到x86下的setup进行安装。

建立一个工程后，写一段代码：

<%@ page language="java" import="java.sql.*,java.lang.*" contentType="text/html;charset=gb2312"%>

    This is my JSP page.

   <% Class.forName("com.microsoft.jdbc.sqlserver.SQLServerDriver").newInstance();
String url="jdbc:microsoft:sqlserver://localhost:1433;DatabaseName=gxc";
String user="sa";
String password="sa";
Connection conn= DriverManager.getConnection(url,user,password);
System.out.println("lianjie ok");
Statement stmt=conn.createStatement(ResultSet.TYPE_SCROLL_SENSITIVE,ResultSet.CONCUR_UPDATABLE);
System.out.println("lianjiehou ok");
String sql="select * from b1";
ResultSet rs=stmt.executeQuery(sql);
while(rs.next()) {%>
您的第一个字段内容为：<%=rs.getString(1)%>
您的第二个字段内容为：<%=rs.getString(2)%>
<%}

%>

    要将三个sql包烤到tomcat下的lib中。

lcgxc 2007-07-16 12:48 发表评论

jfileChooser使用

lcgxc — Mon, 16 Jul 2007 04:46:00 GMT

import java.awt.BorderLayout;
import java.awt.Container;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.IOException;

import javax.swing.JButton;
import javax.swing.JFileChooser;
import javax.swing.JFrame;
import javax.swing.JScrollBar;
import javax.swing.JScrollPane;
import javax.swing.JTextPane;

public class jfileChooser extends JFrame implements ActionListener {
Container con;
JTextPane textpane;
JButton button;
JScrollPane scroll;
FileInputStream filestream;
JFileChooser choser=new JFileChooser();
public jfileChooser(){
  textpane=new JTextPane();
  button=new JButton("ok");
  scroll=new JScrollPane(textpane);
  con=this.getContentPane();
  con.add(scroll,BorderLayout.CENTER);
  con.add(button,BorderLayout.SOUTH);
  button.addActionListener(this);
  this.setExtendedState(JFrame.MAXIMIZED_BOTH);
  setVisible(true);
}

public void actionPerformed(ActionEvent e) {
  // TODO 自动生成方法存根
  if(e.getSource()==button){
   int state= choser.showOpenDialog(null);
   File file=choser.getSelectedFile();
   if(file!=null && state==JFileChooser.APPROVE_OPTION){
    try {
     filestream=new FileInputStream(file);
    } catch (FileNotFoundException e1) {
     // TODO 自动生成 catch 块
     e1.printStackTrace();
    }
    try {
     textpane.read(filestream,this);
    } catch (IOException e1) {
     // TODO 自动生成 catch 块
     e1.printStackTrace();
    }
   }
  }

}
public static void main(String para[]){
jfileChooser chosershili=new jfileChooser();
//chosershili.pack();
}

}

lcgxc 2007-07-16 12:46 发表评论

tabled的使用

lcgxc — Mon, 16 Jul 2007 04:46:00 GMT

import java.awt.*;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement;

import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JTable;

public class table extends JFrame implements ActionListener{
Object a[][];
Object b[]={"name","password"};
Container con;
JButton button;
String name,password;

public table(){
  a=new Object[30][2];

  JTable table=new JTable(a,b);
  table.setSize(300,300);
  button=new JButton("chaxun");
  button.addActionListener(this);
  con=getContentPane();
  con.add(table,BorderLayout.CENTER);
  con.add(button,BorderLayout.SOUTH);
  this.setExtendedState(JFrame.MAXIMIZED_BOTH);
  this.setVisible(true);
}

public void actionPerformed(ActionEvent e) {
  // TODO 自动生成方法存根
  if(e.getSource()==button){
  String driverName = "com.microsoft.jdbc.sqlserver.SQLServerDriver";
  String url="jdbc:microsoft:sqlserver://localhost:1433;DatabaseName=gxc";
  String user="sa";
  String password="sa";
  Statement stmt=null;
  ResultSet result=null;

  Connection dbConn =null;
  int i=0;

  try {

    Class.forName(driverName);

  } catch (ClassNotFoundException e1) {
   // TODO 自动生成 catch 块
   e1.printStackTrace();
  }
  try {
   dbConn = DriverManager.getConnection(url, user, password);

   stmt=dbConn.createStatement();
   String sql="select * from b1";

   result =stmt.executeQuery(sql);
   while(result.next())
         {
   name=result.getString(1);
   password=result.getString(2);
    a[i][0]=name;
    a[i][1]=password;
    i++;

   }
   repaint();
   dbConn.close();
  } catch (SQLException e1) {
   // TODO 自动生成 catch 块
   e1.printStackTrace();
  }


  }

}
public static void main(String para[]){
table table=new table();

}

}

lcgxc 2007-07-16 12:46 发表评论

JprogessBar的使用

lcgxc — Mon, 16 Jul 2007 04:45:00 GMT

import java.awt.Container;
import java.awt.Dimension;
import java.awt.GridLayout;
import java.awt.Toolkit;

import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JProgressBar;

public class JprogessBar extends JFrame implements Runnable{
JProgressBar bar;
static Thread thread;
public JprogessBar(){

  bar=new JProgressBar(0,1000);

  Container con=getContentPane();
  con.add(bar);
  Toolkit kit = Toolkit.getDefaultToolkit();
  Dimension screenSize = kit.getScreenSize();
  setLocation((screenSize.width - 250) / 2, (screenSize.height - 250) / 2);
  setVisible(true);

}
public static void main(String para[]){
  JprogessBar scrollbar=new JprogessBar();
   thread=new Thread(scrollbar);
   thread.start();
   scrollbar.pack();

}

public void run() {
  // TODO 自动生成方法存根
  int sum=0;
  int i=0;
  while(true){
   if(sum>1000)
    break;


   sum=sum+50;
   bar.setValue(sum);
   try {
    thread.sleep(1000);
   } catch (InterruptedException e) {
    // TODO 自动生成 catch 块
    e.printStackTrace();
   }
  }
}

}

lcgxc 2007-07-16 12:45 发表评论

Tree的使用

lcgxc — Mon, 16 Jul 2007 04:44:00 GMT

import java.awt.Container;

import javax.swing.JFrame;
import javax.swing.JScrollPane;
import javax.swing.JSplitPane;
import javax.swing.JTextArea;
import javax.swing.JTree;
import javax.swing.event.TreeSelectionEvent;
import javax.swing.event.TreeSelectionListener;
import javax.swing.tree.DefaultMutableTreeNode;

public class Tree extends JFrame implements TreeSelectionListener {
JTree tree=null;
JTextArea text;
Container con;
JScrollPane scrollpan;
JSplitPane splitpan;

public Tree(){
  con=this.getContentPane();
  DefaultMutableTreeNode root=new DefaultMutableTreeNode("classmate");
  DefaultMutableTreeNode t1=new DefaultMutableTreeNode("sd");
  DefaultMutableTreeNode t2=new DefaultMutableTreeNode("nm");
  DefaultMutableTreeNode t1_1=new DefaultMutableTreeNode("gxc");
  DefaultMutableTreeNode t1_2=new DefaultMutableTreeNode("jzl");
  DefaultMutableTreeNode t2_1=new DefaultMutableTreeNode("xmx");
  root.add(t1);
  root.add(t2);
  t1.add(t1_1);
  t1.add(t1_2);
  t2.add(t2_1);
  tree=new JTree(root);
  text=new JTextArea(20,20);
  scrollpan=new JScrollPane(text);
  splitpan=new JSplitPane(JSplitPane.HORIZONTAL_SPLIT,true,tree,scrollpan);
  tree.addTreeSelectionListener(this);
  con.add(splitpan);
  setVisible(true);
  this.setExtendedState(JFrame.MAXIMIZED_BOTH);


}

public void valueChanged(TreeSelectionEvent e) {
  // TODO 自动生成方法存根
  if(e.getSource()==tree){
   DefaultMutableTreeNode node =(DefaultMutableTreeNode)tree.getLastSelectedPathComponent();
   if(node.isLeaf()){
    String s=node.toString();
     if(s.equals("gxc")){
       text.setText("sd");
     }else if(s.equals("xmx")){
      text.setText("nm");
     }else{
      text.setText(node.getUserObject().toString());
     }
   }
  }
}
public static void main(String para[]){
  Tree tree=new Tree();
}

}

lcgxc 2007-07-16 12:44 发表评论

Clock_good-- 时钟创建

lcgxc — Mon, 16 Jul 2007 04:42:00 GMT

import java.applet.Applet;
import java.awt.Color;
import java.awt.Graphics;
import java.util.Date;

public class Clock_good extends Applet implements Runnable {
Thread hourg = null, muniteg = null, secondg = null;

int hour_a, hour_b, munite_a, munite_b, second_a, second_b;

int hour = 0, munite = 0, second = 0;

Graphics g_hour = null, g_munite = null, g_second = null;

double point_x[] = new double[61], point_y[] = new double[61];

double scaled_x[] = new double[61], scaled_y[] = new double[61];

int start_count = 0;

public void init() {
  g_hour = this.getGraphics();
  g_hour.setColor(Color.cyan);
  g_munite = this.getGraphics();
  g_munite.setColor(Color.blue);
  g_second = this.getGraphics();
  g_second.setColor(Color.red);
  g_hour.translate(100, 100);
  g_munite.translate(100, 100);
  g_second.translate(100, 100);
  point_x[0] = 0;
  point_y[0] = 60;
  scaled_x[0] = 0;
  scaled_y[0] = -70;
  double jiaodu = Math.PI / 30;
  for (int i = 0; i < 60; i++) {
   point_x[i+1] = point_x[i] * Math.cos(jiaodu) - Math.sin(jiaodu)
     * point_y[i];
   point_y[i+1] = point_y[i] * Math.cos(jiaodu) + Math.sin(jiaodu)
     * point_x[i];
  }
  point_x[60] = 0;
  point_y[60] = -60;
  for (int i = 0; i < 60; i++) {
   scaled_x[i+1] = scaled_x[i] * Math.cos(jiaodu) - Math.sin(jiaodu)
     * scaled_y[i];
   scaled_y[i+1] = scaled_y[i] * Math.cos(jiaodu) + Math.sin(jiaodu)
     * scaled_x[i];
  }
  scaled_x[60] = 0;
  scaled_y[60] =-70;
}

public void start() {
  if (start_count >= 1) {
   hourg.interrupt();muniteg.interrupt();secondg.interrupt();
  }
  secondg=new Thread(this);
  muniteg=new Thread(this);
  hourg=new Thread(this);


  secondg.start();
  muniteg.start();
  hourg.start();


  start_count++;
  if(start_count>=2)
   start_count=1;
}

public void run() {
  // TODO 自动生成方法存根
  Date date=new Date();
  String s=date.toString();

  hour=Integer.parseInt(s.substring(11,13));
  munite=Integer.parseInt(s.substring(14,16));
  second=Integer.parseInt(s.substring(17,19));
  if(Thread.currentThread()==secondg){
   second_a=(int)point_x[second];
   second_b=(int)point_y[second];
   g_second.drawLine(0,0,second_a, second_b);
   int i=second;
   while(true){
     try {
      secondg.sleep(1000);
      Color c=getBackground();
      g_second.setColor(c);
      g_second.drawLine(0,0, second_a, second_b);
      if((second_a==munite_a)&&(second_b==munite_b)){
       g_munite.drawLine(0, 0, munite_a, munite_b);

      }
      if((second_a==hour_a)&&(second_b==hour_b)){
       g_hour.drawLine(0, 0, hour_a,hour_b);
      }

     } catch (InterruptedException e) {
      // TODO 自动生成 catch 块
      Color c=getBackground();
      g_second.setColor(c);
      g_second.drawLine(0, 0, second_a, second_b);
      return;
     }
     second_a=(int)point_x[(i+1)%60];
     second_b=(int)point_y[(i+1)%60];
        g_second.setColor(Color.red);
        g_second.drawLine(0, 0, second_a, second_b);
        i++;
   }

  }

  if(Thread.currentThread()==muniteg){
   munite_a=(int)(point_x[munite]/1.5);
   munite_b=(int)(point_y[munite]/1.5);
   g_munite.drawLine(0,0,munite_a, munite_b);
   int i=munite;
   while(true){
    try {
     muniteg.sleep(1000*60-second*1000);
     second=0;
     Color c=getBackground();
     g_munite.setColor(c);
     g_munite.drawLine(0, 0,munite_a , munite_b);
     if((hour_a==munite_a)&&(hour_b==munite_b)){
      g_hour.drawLine(0, 0, hour_a,hour_b);
     }
    } catch (InterruptedException e) {
     // TODO 自动生成 catch 块
     return;
    }
    munite_a=(int)(point_x[(i+1)%60]/1.5);
    munite_b=(int)(point_y[(i+1)%60]/1.5);
       g_munite.setColor(Color.blue);
       g_munite.drawLine(0, 0, munite_a, munite_b);
       i++;
    second=0;
   }
  }
  if(Thread.currentThread()==hourg){
   int h=hour%12;
   hour_a=(int)point_x[h*5+munite/12]/2;
   hour_b=(int)point_y[h*5+munite/12]/2;
   int i=h*5+munite/12;
   g_hour.drawLine(0, 0, hour_a, hour_b);
   while(true){
    try {
     hourg.sleep(1000*60*12-1000*60*(munite%12)-second*1000);
     munite=0;
     Color c=getBackground();
     g_hour.setColor(c);
     g_hour.drawLine(0, 0,hour_a , hour_b);

    } catch (InterruptedException e) {
     // TODO 自动生成 catch 块
     return;
    }

    hour_a=(int)point_x[(i+1)%60]/2;
    hour_b=(int)point_y[(i+1)%60]/2;
       g_hour.setColor(Color.cyan);
       g_hour.drawLine(0, 0, hour_a, hour_b);
       i++;
    munite=0;
   }
  }

}
public void stop(){
  secondg.interrupt();muniteg.interrupt();hourg.interrupt();
}
public void paint(Graphics g){
  this.start();
  g.drawOval(25, 25, 150, 150);
  g.translate(100, 100);
  //g.drawOval(0, 0, 150, 150);
  for(int i=0;i<60;i++){
   if(i%5==0){
    g.setColor(Color.red);
    g.fillOval((int)scaled_x[i], (int)scaled_y[i], 4,4);
   }else{
    g.fillOval((int)scaled_x[i], (int)scaled_y[i], 2, 2);
   }
  }
}

}

lcgxc 2007-07-16 12:42 发表评论

socket的使用

lcgxc — Mon, 16 Jul 2007 04:41:00 GMT

客户端：

package com.gxc;

import java.io.DataInputStream;
import java.io.DataOutputStream;
import java.io.IOException;
import java.net.Socket;
import java.net.UnknownHostException;

public class socket {
public static void main(String para[]){
  Socket mysocket=null;
  String str=null;
  DataInputStream in=null;;
  DataOutputStream out=null;
  try {
   mysocket=new Socket("localhost",8000);
   in=new DataInputStream(mysocket.getInputStream());
   out=new DataOutputStream(mysocket.getOutputStream());
   out.writeUTF("nihao");
   while(true){
    str=in.readUTF();
    if(str!=null){
     System.out.println(str);
     break;
    }
   }
   mysocket.close();
  } catch (UnknownHostException e) {
   // TODO 自动生成 catch 块
   e.printStackTrace();
  } catch (IOException e) {
   // TODO 自动生成 catch 块
   e.printStackTrace();
  }

}

}
服务端：

package com.gxc;

import java.io.DataInputStream;
import java.io.DataOutputStream;
import java.io.IOException;
import java.net.ServerSocket;
import java.net.Socket;

public class server {
public static void main(String para[]){

ServerSocket server=null;
Socket socket=null;
DataInputStream in=null;;
DataOutputStream out=null;
String str=null;
try {
  server=new ServerSocket(8000);
} catch (IOException e) {
  // TODO 自动生成 catch 块
  e.printStackTrace();
}
try {
  socket=server.accept();
  in=new DataInputStream(socket.getInputStream());
  out=new DataOutputStream(socket.getOutputStream());
  while(true){
   str=in.readUTF();
   if(str!=null){
    System.out.println(str);
    break;
   }


  }
  out.writeUTF("213423");
  socket.close();
} catch (IOException e) {
  // TODO 自动生成 catch 块
  e.printStackTrace();
}

}

}

lcgxc 2007-07-16 12:41 发表评论