Eclipse - SQL 结果视图 - 打印 SQLWarnings

使用Eclipse的SQL结果视图可以方便地查看和管理数据库中的数据。除了查询结果，SQLWarnings也是我们在进行数据库操作时需要注意的信息。本文将介绍如何在Eclipse中打印SQLWarnings，并提供一个案例代码来说明这一过程。

java
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement;
public class SQLWarningsExample {
    public static void main(String[] args) {
        String url = "jdbc:mysql://localhost:3306/mydatabase";
        String username = "root";
        String password = "password";
        try {
            // 建立数据库连接
            Connection connection = DriverManager.getConnection(url, username, password);
            // 创建Statement对象
            Statement statement = connection.createStatement();
            // 执行SQL语句
            String sql = "SELECT * FROM users";
            ResultSet resultSet = statement.executeQuery(sql);
            // 打印查询结果
            while (resultSet.next()) {
                System.out.println("ID: " + resultSet.getInt("id"));
                System.out.println("Name: " + resultSet.getString("name"));
                System.out.println("Email: " + resultSet.getString("email"));
                System.out.println();
            }
            // 打印SQLWarnings
            SQLWarning warning = statement.getWarnings();
            while (warning != null) {
                System.out.println("SQLWarning: " + warning.getMessage());
                warning = warning.getNextWarning();
            }
            // 关闭连接
            resultSet.close();
            statement.close();
            connection.close();
        } catch (SQLException e) {
            e.printStackTrace();
        }
    }
}