package com.hfuu.xl.db;

import java.*;

import org.apache.log4j.Logger;
public class Connect{
     private java.sql.Connection  con = null;
     private final String url = "jdbc:sqlserver://";
     private final String serverName= "localhost";
     private final String portNumber = "1433";
     private final String databaseName= "master";
     private final String userName = "sa";
     private final String password = "123456";
     private final String selectMethod = "cursor"; 
     private static  Logger logger=Logger.getLogger(JDBCTest.class);

     public Connect(){}
     
     private String getConnectionUrl(){
    	 // String url = "jdbc:sqlserver://localhost:1433;databaseName=" + dbName;
          return url+serverName+":"+portNumber+";databaseName="+databaseName;
     }
     
     private java.sql.Connection getConnection(){
    	 logger.info("--开始连接");
          try{
               Class.forName("com.microsoft.sqlserver.jdbc.SQLServerDriver"); 
               con = java.sql.DriverManager.getConnection(getConnectionUrl(),userName,password);
               if(con!=null)  logger.info("--加载成功");
          }catch(Exception e){
        	  logger.info("--加载异常");
               e.printStackTrace();
         }
          return con;
      }

     /*
          Display the driver properties, database details 
     */ 

     public void displayDbProperties(){
          java.sql.DatabaseMetaData dm = null;
          java.sql.ResultSet rs = null;
          try{
               con= this.getConnection();
               if(con!=null){
            	   logger.info("--已连接上，正在读取数据。。。");
                    dm = con.getMetaData();
                    System.out.println("Driver Information");
                    System.out.println("\tDriver Name: "+ dm.getDriverName());
                    System.out.println("\tDriver Version: "+ dm.getDriverVersion ());
                    System.out.println("\nDatabase Information ");
                    System.out.println("\tDatabase Name: "+ dm.getDatabaseProductName());
                    System.out.println("\tDatabase Version: "+ dm.getDatabaseProductVersion());
                    System.out.println("Avalilable Catalogs ");
                    rs = dm.getCatalogs();
                    while(rs.next()){
                         System.out.println("\tcatalog: "+ rs.getString(1));
                    } 
                    rs.close();
                    rs = null;
                    closeConnection();
               }else {
            	   logger.info("--获取连接失败");
               }          }catch(Exception e){
               e.printStackTrace();
          }
          dm=null;
     }     
     
     private void closeConnection(){
          try{
               if(con!=null)
                    con.close();
               con=null;
          }catch(Exception e){
               e.printStackTrace();
          }
     }
     public static void main(String[] args) throws Exception
       {
    	 logger.info("--开始执行");
          Connect myDbTest = new Connect();
          myDbTest.displayDbProperties();
          logger.info("--程序执行完毕");
       }
}