Java中如何获得数据库支持的日期时间功能？
package org.nhooo.example.jdbc;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.DatabaseMetaData;
import java.sql.SQLException;
public class DateTimeFunction {
private static final String URL = "jdbc:mysql://localhost/nhooo";
private static final String USERNAME = "root";
private static final String PASSWORD = "";
public static void main(String[] args) {
try (Connection connection =
DriverManager.getConnection(URL, USERNAME, PASSWORD)) {
DatabaseMetaData meta = connection.getMetaData();
//获取数据库支持的日期和时间函数
String[] functions = meta.getTimeDateFunctions().split(",\\s*");
for (String function : functions) {
System.out.println("Function = " + function);
}
} catch (SQLException e) {
e.printStackTrace();
}
}
}MySQL数据库支持的日期和时间功能。
Function = DAYOFWEEK Function = WEEKDAY Function = DAYOFMONTH Function = DAYOFYEAR Function = MONTH Function = DAYNAME Function = MONTHNAME Function = QUARTER Function = WEEK Function = YEAR Function = HOUR Function = MINUTE Function = SECOND Function = PERIOD_ADD Function = PERIOD_DIFF Function = TO_DAYS Function = FROM_DAYS Function = DATE_FORMAT Function = TIME_FORMAT Function = CURDATE Function = CURRENT_DATE Function = CURTIME Function = CURRENT_TIME Function = NOW Function = SYSDATE Function = CURRENT_TIMESTAMP Function = UNIX_TIMESTAMP Function = FROM_UNIXTIME Function = SEC_TO_TIME Function = TIME_TO_SEC
Maven依赖
<!-- https://search.maven.org/remotecontent?filepath=mysql/mysql-connector-java/8.0.17/mysql-connector-java-8.0.17.jar -->
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>8.0.17</version>
</dependency>