如何使用 MySQL 在 Java 中获取 ResultSet 上的列名称？

要获得结果集中的列名，您需要使用getMetaData()方法。getMetadata()的原型如下 −

ResultSetMetaData getMetaData throws SQLException;登录后复制

mysql> create table javagetallcolumnnames -> ( -> Id int NOT NULL AUTO_INCREMENT, -> Name varchar(20), -> Age int, -> Salary float, -> Address varchar(100), -> PRIMARY KEY(Id) -> ); Query OK, 0 rows affected (1.34 sec)登录后复制

import java.sql.Connection; import java.sql.DriverManager; import java.sql.ResultSet; import java.sql.Statement; import com.mysql.jdbc.ResultSetMetaData; public class GetAllColumnNames { public static void main(String[] args) { String JdbcURL="jdbc:mysql://localhost:3306/test?useSSL=false"; String Username="root"; String password="123456"; Connection con=null; Statement stmt=null; ResultSet rs; try { con = DriverManager.getConnection(JdbcURL, Username, password); stmt=con.createStatement(); rs = stmt.executeQuery("SELECT *FROM javagetallcolumnnames"); ResultSetMetaData md = (ResultSetMetaData) rs.getMetaData(); int counter = md.getColumnCount(); String colName[] = new String[counter]; System.out.println("The column names are as follows:"); for (int loop = 1; loop