java输出MYSQL数据库里面的数据最简单的实例

import java.sql.*;
public class JDBCExample {
   static final String JDBC_DRIVER = "com.mysql.jdbc.Driver";
   static final String DB_URL = "jdbc:mysql://localhost:3306/gbooks";

   static final String USER = "root";
   static final String PASS = "";

   public static void main(String[] args) {
   Connection conn = null;
   Statement stmt = null;

   try{
      Class.forName("com.mysql.jdbc.Driver");
      System.out.println("Connecting to database...");
      conn = DriverManager.getConnection(DB_URL,USER,PASS);
      System.out.println("Creating statement...");
      stmt = conn.createStatement();
      String sql;
      sql = "select * from admin";
      ResultSet rs = stmt.executeQuery(sql);
      while(rs.next()){
         System.out.print("ID: " + rs.getInt("id"));
         System.out.print(", webtitle  : " + rs.getString("webtitle"));
         System.out.print(", adminhttp : " + rs.getString("adminhttp"));
         System.out.print(", adminname : " + rs.getString("adminname"));
         System.out.print(", adminpass : " + rs.getString("adminpass"));
         System.out.print(", adminmail : " + rs.getString("adminmail"));
         System.out.print(", webadvice : " + rs.getString("adminmail"));
         System.out.println(", webadvice : " + rs.getString("webadvice"));
      }
      rs.close();
      stmt.close();
      conn.close();
   }catch(SQLException se){
      se.printStackTrace();
   }catch(Exception e){
      e.printStackTrace();
   }finally{
      try{
         if(stmt!=null)
            stmt.close();
      }catch(SQLException se2){
      }// nothing we can do
      try{
         if(conn!=null)
            conn.close();
      }catch(SQLException se){
         se.printStackTrace();
      }//end finally try
   }//end try
}
}

　　

 

 

 

 

 

 

 

 

 

 

 

 

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