database.java

ajax实现动态曲线绘制

package whut;

import java.sql.*;
	  
public class DataBase {

      public Connection conn;
	  public Statement stmt;
	  public ResultSet rs=null;
	  public String sqlStr="";

	  public DataBase() {
	    this.connect();
	  }
	 public boolean connect(){
	      try{
	        Class.forName("com.mysql.jdbc.Driver").newInstance();
	        
	        conn=DriverManager.getConnection("jdbc:mysql://localhost:3306/curve?" +
	        		"useUnicode=true&characterEncoding=gb2312","root","a");
	        stmt = conn.createStatement ();
	       }catch(Exception ee){
	        System.out.println("connect db error:"+ee.getMessage());
	        return false;
	       }
	      return true;
	    }
	 public static void main(String[] args) {
	     try{
	            DataBase db = new DataBase();
	            db.connect();
	          }catch(Exception e){
	            e.printStackTrace();
	          }
	        }
	}