1 package MYSQK;   2 import java.sql.*;   3   4 /**   5  * PreparedStatement 对象可以对sql语句进行预编译，预编译的信息会存在存储该对象中，当相同的sql语句再次执行时，程序   6  *   会使用PrepareStatement对象中，而不需再次编译去查询数据库，大大提高了数据的访问效率   7  */   8   9 public class Insert {  10     public  static  void main(String[] args) throws SQLException{  11         Connection conn=null;  12         PreparedStatement pst =null;  13  14         try {  15             // 1 加载驱动类  16             Class.forName("com.mysql.jdbc.Driver");  17             // 2 通过DriverManager获取connection对象  18              String url="jdbc:mysql://192.168.64.128:3306/jdbc?" +  19                       "user=root&password=815qza&useUnicode=true&characterEncoding=UTF8";  20              conn = DriverManager.getConnection(url);  21              if (!conn.isClosed()){  22                  System.out.println("Succeeded connecting to the Database!");  23              }else{  24                  System.out.println("Sorry,failed  connecting to the Database");  25              }  26              // 3 获取pre对象  27               String sql = "INSERT  INTO  USERS(name,PASSWORD,email,birthday) VALUES (?,?,?,?)";  28                pst = conn.prepareStatement(sql);  29              //为sql参数赋值  30                pst.setString(1,"bowen5");  31                pst.setString(2,"815qza");  32                pst.setString(3,"[email protected]");  33                pst.setString(4,"1990-11-01");  34              //4  使用prepare对象执行sql语句  35                int count = pst.executeUpdate();  36                System.out.println("影响数据库的条数为："+count);  37              //5 操作result结果集  38         }catch (ClassNotFoundException e){  39             e.printStackTrace();  40         }finally {  41             // 6 关闭连接  42              pst.close();  43              conn.close();  44         }  45     }  46 }