package sqldstudent;
 import java.sql.Connection;
 import java.sql.DriverManager;
 import java.sql.ResultSet;
 import java.sql.SQLException;
 import java.sql.Statement;
 public class main {
     public static void main(String[] args) {
         //聲明Connection對(duì)象
         Connection con;
         //驅(qū)動(dòng)程序名
         String driver = "com.mysql.jdbc.Driver";
         //URL指向要訪問(wèn)的數(shù)據(jù)庫(kù)名mydata
         String url = "jdbc:mysql://localhost:3306/mysql";
         //MySQL配置時(shí)的用戶名
         String user = "root";
         //MySQL配置時(shí)的密碼
         String password = "****";
         //遍歷查詢結(jié)果集
         try {
             //加載驅(qū)動(dòng)程序
             Class.forName(driver);            
             //1.getConnection()方法，連接MySQL數(shù)據(jù)庫(kù)！！
             con = DriverManager.getConnection(url,user,password);
             if(!con.isClosed())
                 System.out.println("Succeeded connecting to the Database!");
             //2.創(chuàng)建statement類對(duì)象，用來(lái)執(zhí)行SQL語(yǔ)句??！
             Statement statement = con.createStatement();
             //要執(zhí)行的SQL語(yǔ)句
             String sql = "select * from student";
             //3.ResultSet類，用來(lái)存放獲取的結(jié)果集?。?
             ResultSet rs = statement.executeQuery(sql);
             System.out.println("--------------------------------------");
             System.out.println("執(zhí)行結(jié)果如下所示:");  
             System.out.println("------------------------");  
             System.out.println("學(xué)號(hào)" + "\t" + "姓名" + "\t" + "性別" + "\t" + "年齡");  
             System.out.println("--------------------------------------");  
             String name= null;
             String id = null;
             String sex = null;
             String age = null;
             while(rs.next()){
            	 //獲取sno這列數(shù)據(jù)
                 id = rs.getString("sno");
                 //獲取sname這列數(shù)據(jù)
                 name = rs.getString("sname");
                 //獲取sex這列數(shù)據(jù)
                 sex = rs.getString("sex");
                 //獲取age這列數(shù)據(jù)
                 age = rs.getString("age");
                 //輸出結(jié)果
                 System.out.println(id + "\t" + name + "\t" + sex + "\t" + age);
             }
             rs.close();
             con.close();
         } catch(ClassNotFoundException e) {   
             //數(shù)據(jù)庫(kù)驅(qū)動(dòng)類異常處理
             System.out.println("Sorry,can`t find the Driver!");   
             e.printStackTrace();   
             } catch(SQLException e) {
             //數(shù)據(jù)庫(kù)連接失敗異常處理
             e.printStackTrace();  
             }catch (Exception e) {
             // TODO: handle exception
             e.printStackTrace();
         }
         finally{
             System.out.println("數(shù)據(jù)庫(kù)數(shù)據(jù)成功獲?。?！");
         }
     }
 }