按名称从 ResultSet 获取值

Question

如何通过属性名称从 ResultSet 获取值？

DB-Table（表）：

name:TEXT | age:INT | gender:INT

SQL 查询：

SELECT * FROM table WHERE name='john'

输出位于java.sql.ResultSet

如何通过列名称（姓名、年龄、性别）获取变量？

Answer 1

您可以像这样迭代这些值：

Statement stmt = null;
    String query = "SELECT * FROM table WHERE name='john'";
    try {
        stmt = con.createStatement();
        ResultSet rs = stmt.executeQuery(query);
        while (rs.next()) {
            String name= rs.getString("name");
            int age= rs.getInt("age");
            int gender = rs.getInt("gender");
        }
    } catch (Exception e ) {
        e.printStackTrace();
    } finally {
        if (stmt != null) { stmt.close(); }
    }