JAVA JDBC·ÃÎÊÊý¾Ý¿â±ê×¼´úÂë

 package edu.zzu.jdbc.Test;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.ResultSet;
import java.sql.Statement;
import com.ambow.jdbc.entity.Student;
public class TestDBConn{
 
 public static void main(String args[]){
  
  String url="jdbc:sqlserver://localhost:1433;databaseName=zzu";
  String username="sa";
  String password="123456";
  Connection conn =null;
  Statement stmt =null;
  ResultSet rs =null;
  
     try {
      //1¡¢¼ÓÔØÇý¶¯
   Class.forName("com.microsoft.sqlserver.jdbc.SQLServerDriver");
   //2¡¢Í¨¹ýDriverManagee»ñÈ¡Á¬½Ó°üÀ¨(Êý¾Ý¿âÁ¬½Ó×Ö·û´®,Óû§Ãû,ÃÜÂë)
   conn = DriverManager.getConnection(url, username, password);
   //3¡¢Í¨¹ý Connection ¶ÔÏóÀ´´´½¨ createStatement
   stmt = conn.createStatement();
   //4¡¢×Ô¶¨Òå SQL Óï¾ä
//   String sql = " select * from student "; 
   String sql = "insert into student values (?,?,?) "; 
   //5¡¢Í¨¹ý statement ¶ÔÏóÀ´Ö´ÐÐ SQL Óï¾ä£¬²¢ÇÒ·µ»Ø½á¹û¸ø ResultSet
   rs =stmt.executeQuery(sql);
   while(rs.next()){
    System.out.print(rs.getInt("id")+" ");
    System.out.print(rs.getString("name")+" ");
    System.out.println(rs.getString("password"));
   }
  } catch (Exception e) {
   e.printStackTrace();
  } finally{
   try{
    if(conn!=null){
     conn.close();
     conn=null;
    }
    if(stmt!=null){
     stmt.close();
     stmt=null;
   &n