Java sql.Time valueOf() 方法示例
jdbcjava 8object oriented programmingprogramming更新于 2025/9/5 3:24:17
java.sql.Time 类的 valueOf() 方法接受一个表示 JDBC 转义格式时间的字符串值，并将给定的字符串值转换为 Time 对象。
Time time = Time.valueOf("time_string");
示例
让我们使用 CREATE 语句在 MySQL 数据库中创建一个名为 dispatches 的表，如下所示 −
CREATE TABLE dispatches( ProductName VARCHAR(255), CustomerName VARCHAR(255), DispatchDate date, DeliveryTime time, Price INT, Location VARCHAR(255));
现在，我们将使用 INSERT 语句向 dispatches 表中插入 5 条记录−
insert into dispatches values('Key-Board', 'Raja', DATE('2019-09-01'), TIME('11:00:00'), 7000, 'Hyderabad');
insert into dispatches values('Earphones', 'Roja', DATE('2019-05-01'), TIME('11:00:00'), 2000, 'Vishakhapatnam');
insert into dispatches values('Mouse', 'Puja', DATE('2019-03-01'), TIME('10:59:59'), 3000, 'Vijayawada');
insert into dispatches values('Mobile', 'Vanaja', DATE('2019-03-01'), TIME('10:10:52'), 9000, 'Chennai');
insert into dispatches values('Headset', 'Jalaja', DATE('2019-04-06'), TIME('11:08:59'), 6000, 'Goa');
以下 JDBC 程序与数据库建立连接，并向调度表中插入一条新记录。
import java.sql.Connection;
import java.sql.Date;
import java.sql.DriverManager;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement;
import java.sql.Time;
public class Time_valueOf {
public static void main(String args[]) throws SQLException {
//Registering the Driver
DriverManager.registerDriver(new com.mysql.jdbc.Driver());
//Getting the connection
String mysqlUrl = "jdbc:mysql://localhost/mydatabase";
Connection con = DriverManager.getConnection(mysqlUrl, "root", "password");
System.out.println("连接已建立......");
//Inserting values to a table
String query = "INSERT INTO dispatches VALUES (?, ?, ?, ?, ?, ?)";
PreparedStatement pstmt = con.prepareStatement(query);
pstmt.setString(1, "Watch");
pstmt.setString(2, "Rajan");
pstmt.setDate(3, new Date(1567315800000L));
Time time = Time.valueOf("10:59:59");
pstmt.setTime(4, time);
pstmt.setInt(5, 4000);
pstmt.setString(6, "Chennai");
pstmt.execute();
//Retrieving data
Statement stmt = con.createStatement();
ResultSet rs = stmt.executeQuery("select * from dispatches");
while(rs.next()) {
System.out.print("Name: "+rs.getString("ProductName")+", ");
System.out.print("Customer Name: "+rs.getString("CustomerName")+", ");
System.out.print("Dispatch Date: "+rs.getDate("DispatchDate")+", ");
System.out.print("Delivery Time: "+rs.getTime("DeliveryTime")+", ");
System.out.print("Price: "+rs.getInt("Price")+", ");
System.out.print("Location: "+rs.getString("Location"));
System.out.println();
}
}
}
Here, in this program we are taking the time value in String format and converting it into the java.util.Time object using the valueOf() method.
输出
连接已建立...... Name: Key-Board, Customer Name: Raja, Dispatch Date: 2019-09-01, Delivery Time: 11:00:00, Price: 7000, Location: Hyderabad, Name: Earphones, Customer Name: Roja, Dispatch Date: 2019-05-01, Delivery Time: 11:00:00, Price: 2000, Location: Vishakhapatnam, Name: Mouse, Customer Name: Puja, Dispatch Date: 2019-03-01, Delivery Time: 10:59:59, Price: 3000, Location: Vijayawada, Name: Mobile, Customer Name: Vanaja, Dispatch Date: 2019-03-01, Delivery Time: 10:10:52, Price: 9000, Location: Chennai, Name: Headset, Customer Name: Jalaja, Dispatch Date: 2019-04-06, Delivery Time: 11:08:59, Price: 6000, Location: Goa, Name: Watch, Customer Name: Rajan, Dispatch Date: 2019-09-01, Delivery Time: 10:59:59, Price: 4000, Location: Chennai
