Java如何将光标移动到最后一条记录？
要将光标移到结果集的末尾（最后一条记录之后），可以调用afterLast()结果集的方法。
package org.nhooo.example.jdbc;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement;
public class ScrollableAfterLastExample {
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)) {
Statement statement = connection.createStatement(
ResultSet.TYPE_SCROLL_INSENSITIVE,
ResultSet.CONCUR_READ_ONLY);
String sql = "SELECT code, name, price FROM products";
ResultSet resultSet = statement.executeQuery(sql);
//让我们跳到最后的记录。afterLast()方法将
//将光标置于最后一条记录之后。
resultSet.afterLast();
while (resultSet.previous()) {
String code = resultSet.getString("code");
String name = resultSet.getString("name");
double price = resultSet.getDouble("price");
System.out.println(code + "\t" + name + "\t" + price);
}
} catch (SQLException e) {
e.printStackTrace();
}
}
}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>