jdbc 4.0

1.存储MySQL数据库的date、time、timestamp、datetime以及year类型数据

 package com.rong.jielong;

 import java.sql.Connection;
 import java.sql.Date;
 import java.sql.DriverManager;
 import java.sql.PreparedStatement;
 import java.sql.Time;
 import java.sql.Timestamp;
 import java.util.Calendar;
 import java.util.Properties;

 public class Test7 {

     /**
      * @author 容杰龙
      */
     public static void main(String[] args) {
         try {
             Class.forName("com.mysql.jdbc.Driver");
             String url="jdbc:mysql://localhost:3306/rjl";
             Properties info=new Properties();
             info.setProperty("user", "rjl");
             info.setProperty("password", "123");
             Connection conn = DriverManager.getConnection(url, info);
             String sql="insert into time values(?,?,?,?,?)";
             //java.util.Date包含的信息有    年-月-日   时：分：秒
             PreparedStatement ps = conn.prepareStatement(sql);
             //数据库的date类型   2017-11-04 =======java.sql包的Date
             ps.setDate(1, new Date(new java.util.Date().getTime()));

             //数据库的time类型   21:22:19=======java.sql包的Time
             ps.setTime(2, new Time(new java.util.Date().getTime()));

             //数据库的timestamp类型 2017-11-04 21:22:19======java.sql包的Timestamp
             ps.setTimestamp(3, new Timestamp(new java.util.Date().getTime()));

             //数据库的datatime类型  2017-11-04 21:22:19======java.sql包的Timestamp
             ps.setTimestamp(4, new Timestamp(new java.util.Date().getTime()));

             //数据库的year类型  2017========java的无符号整数
             ps.setInt(5, Calendar.getInstance().get(Calendar.YEAR));

             int count = ps.executeUpdate();
             if (count>0) {
                 System.out.println("添加成功！");
             }else{
                 System.out.println("添加失败！");
             }

             ps.close();
             conn.close();
         } catch (Exception e) {
             e.printStackTrace();
         }
     }

 }

2.读取数据库各种时间

 package com.rong.jielong;

 import java.sql.Connection;
 import java.sql.Date;
 import java.sql.DriverManager;
 import java.sql.PreparedStatement;
 import java.sql.ResultSet;
 import java.sql.Time;
 import java.sql.Timestamp;

 public class Test8 {

     /**
      * @author 容杰龙
      */
     public static void main(String[] args) {
         try {
             Class.forName("com.mysql.jdbc.Driver");
             String url = "jdbc:mysql://127.0.0.1:3306/rjl";
             String user = "rjl";
             String password = "123";
             Connection conn = DriverManager.getConnection(url, user, password);
             // 取第一条数据
             String sql = "select * from time limit 0,1";
             PreparedStatement ps = conn.prepareStatement(sql);
             ResultSet rs = ps.executeQuery();
             while (rs.next()) {
                 // 从查询的结果集中获取时间对象
                 Date date = rs.getDate("date");
                 Time time = rs.getTime("time");
                 Timestamp timestamp = rs.getTimestamp("timestamp");
                 Timestamp datetime = rs.getTimestamp("datetime");

                 int year = rs.getInt("year");

                 System.out.println(date + "###" + time + "###" + timestamp
                         + "###" + datetime + "###" + year);
                 // 输出2017-11-04###21:22:19###2017-11-04 21:22:19.0###2017-11-04
                 // 21:22:19.0###2017
             }
         } catch (Exception e) {
             e.printStackTrace();
         }

     }

 }