import java.sql.*;

public class JdbcGetColumnNames {

    public static void main(String args[]) {
        Connection con = null;
        Statement st = null;
        ResultSet rs = null;

        try {
            Class.forName("com.mysql.jdbc.Driver");
            con = DriverManager.getConnection(
                    "jdbc:mysql://localhost:3306/komal", "root", "root");

            st = con.createStatement();

            String sql = "select * from person";
            rs = st.executeQuery(sql);
            ResultSetMetaData metaData = rs.getMetaData();

            int rowCount = metaData.getColumnCount();

            System.out.println("Table Name : " + metaData.getTableName(2));
            System.out.println("Field  \tDataType");

            for (int i = 0; i < rowCount; i++) {
                System.out.print(metaData.getColumnName(i + 1) + "  \t");
                System.out.println(metaData.getColumnTypeName(i + 1));
            }
        } catch (Exception e) {
            System.out.println(e);
        }
    }
}

表名:人 字段数据类型 id VARCHAR cname VARCHAR 强加于人的日期

您可以从ResultSet元数据中获得此信息。看到ResultSetMetaData

e.g.

 ResultSet rs = stmt.executeQuery("SELECT a, b, c FROM TABLE2");
 ResultSetMetaData rsmd = rs.getMetaData();
 String name = rsmd.getColumnName(1);

你可以从那里得到列名。如果有的话

select x as y from table

那么rsmd.getColumnLabel()也会给你检索到的标签名。

这个问题很老了，以前的正确答案也很老了。但当我找到这个话题时，我想要的是类似这样的解。希望它能帮助到某些人。

// Loading required libraries    
import java.util.*;
import java.sql.*;

public class MySQLExample {
  public void run(String sql) {
    // JDBC driver name and database URL
    String JDBC_DRIVER = "com.mysql.jdbc.Driver";
    String DB_URL = "jdbc:mysql://localhost/demo";

    // Database credentials
    String USER = "someuser"; // Fake of course.
    String PASS = "somepass"; // This too!

    Statement stmt = null;
    ResultSet rs = null;
    Connection conn = null;
    Vector<String> columnNames = new Vector<String>();

    try {
      // Register JDBC driver
      Class.forName(JDBC_DRIVER);

      // Open a connection
      conn = DriverManager.getConnection(DB_URL, USER, PASS);

      // Execute SQL query
      stmt = conn.createStatement();
      rs = stmt.executeQuery(sql);
      if (rs != null) {
        ResultSetMetaData columns = rs.getMetaData();
        int i = 0;
        while (i < columns.getColumnCount()) {
          i++;
          System.out.print(columns.getColumnName(i) + "\t");
          columnNames.add(columns.getColumnName(i));
        }
        System.out.print("\n");

        while (rs.next()) {
          for (i = 0; i < columnNames.size(); i++) {
            System.out.print(rs.getString(columnNames.get(i))
                + "\t");

          }
          System.out.print("\n");
        }

      }
    } catch (Exception e) {
      System.out.println("Exception: " + e.toString());
    }

    finally {
      try {
        if (rs != null) {
          rs.close();
        }
        if (stmt != null) {
          stmt.close();
        }
        if (conn != null) {
          conn.close();
        }
      } catch (Exception mysqlEx) {
        System.out.println(mysqlEx.toString());
      }

    }
  }
}

U可以从resultSet.getMetaData()获取列名和值; 这段代码为我工作:

Connection conn = null;
PreparedStatement preparedStatement = null;
    try {
        Class.forName("com.mysql.cj.jdbc.Driver");
        conn = MySQLJDBCUtil.getConnection();
        preparedStatement = conn.prepareStatement(sql);
        if (params != null) {
            for (int i = 0; i < params.size(); i++) {
                preparedStatement.setObject(i + 1, params.get(i).getSqlValue());
            }
            ResultSet resultSet = preparedStatement.executeQuery();
            ResultSetMetaData md = resultSet.getMetaData();
            while (resultSet.next()) {
                int counter = md.getColumnCount();
                String colName[] = new String[counter];
                Map<String, Object> field = new HashMap<>();
                for (int loop = 1; loop <= counter; loop++) {
                    int index = loop - 1;
                    colName[index] = md.getColumnLabel(loop);
                    field.put(colName[index], resultSet.getObject(colName[index]));
                }
                rows.add(field);
            }
        }
    } catch (SQLException e) {
        e.printStackTrace();
    } finally {
        if (preparedStatement != null) {
            try {
                preparedStatement.close();
            }catch (Exception e1) {
                e1.printStackTrace();
            }
        }
        if (conn != null) {
            try {
                conn.close();
            } catch (SQLException e) {
                e.printStackTrace();
            }
        }
    }
    return rows;

while (rs.next()) {
   for (int j = 1; j < columncount; j++) {
       System.out.println( rsd.getColumnName(j) + "::" + rs.getString(j));      
   }
}

SQLite 3

教科书getMetaData ();

DatabaseMetaData md = conn.getMetaData();
ResultSet rset = md.getColumns(null, null, "your_table_name", null);

System.out.println("your_table_name");
while (rset.next())
{
    System.out.println("\t" + rset.getString(4));
}

编辑:这也适用于PostgreSQL