Java中如何知道数据库是否支持可滚动结果集？
package org.nhooo.example.jdbc;
import java.sql.*;
public class SupportScrollableResultSet {
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();
boolean isForwardOnly = meta.supportsResultSetType(
ResultSet.TYPE_FORWARD_ONLY);
System.out.println("ForwardOnly = " + isForwardOnly);
boolean isScrollInsensitive = meta.supportsResultSetType(
ResultSet.TYPE_SCROLL_INSENSITIVE);
System.out.println("ScrollInsensitive = " + isScrollInsensitive);
boolean isScrollSensitive = meta.supportsResultSetType(
ResultSet.TYPE_SCROLL_SENSITIVE);
System.out.println("ScrollSensitive = " + isScrollSensitive);
} catch (SQLException e) {
e.printStackTrace();
}
}
}上面的代码片段的结果：
ForwardOnly = false ScrollInsensitive = true ScrollSensitive = false
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>