Java(32)_ JDBC向数据库中插入数据

package MYSQK;
import java.sql.*;

/**
 * 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
 *   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
 */

public class Insert {
    public  static  void main(String[] args) throws SQLException{
        Connection conn=null;
        PreparedStatement pst =null;

        try {
            // 1 加载驱动类
            Class.forName("com.mysql.jdbc.Driver");
            // 2 通过DriverManager获取connection对象
             String url="jdbc:mysql://192.168.64.128:3306/jdbc?" +
                      "user=root&password=815qza&useUnicode=true&characterEncoding=UTF8";
             conn = DriverManager.getConnection(url);
             if (!conn.isClosed()){
                 System.out.println("Succeeded connecting to the Database!");
             }else{
                 System.out.println("Sorry,failed  connecting to the Database");
             }
             // 3 获取pre对象
              String sql = "INSERT  INTO  USERS(name,PASSWORD,email,birthday) VALUES (?,?,?,?)";
               pst = conn.prepareStatement(sql);
             //为sql参数赋值
               pst.setString(1,"bowen5");
               pst.setString(2,"815qza");
               pst.setString(3,"bowen815@126.com");
               pst.setString(4,"1990-11-01");
             //4  使用prepare对象执行sql语句
               int count = pst.executeUpdate();
               System.out.println("影响数据库的条数为:"+count);
             //5 操作result结果集
        }catch (ClassNotFoundException e){
            e.printStackTrace();
        }finally {
            // 6 关闭连接
             pst.close();
             conn.close();
        }
    }
}

 

原文地址:https://www.cnblogs.com/sunnybowen/p/9867276.html