【Java/Oracle】利用user_tab_comments获取oracle表注释

代码：

package com.hy.lab.colcomment;

import java.sql.*;

public class Test2 {
    public static Connection getConnection() {
        Connection conn = null;
        try {
            Class.forName("oracle.jdbc.driver.OracleDriver");
            String url = "jdbc:oracle:thin:@127.0.0.1:1521:orcl";
            String user = "luna";
            String pass = "1234";
            conn = DriverManager.getConnection(url, user, pass);
        } catch (ClassNotFoundException e) {
            e.printStackTrace();
        } catch (SQLException e) {
            e.printStackTrace();
        }
        return conn;
    }

    public static void main(String[] args) {
        String sql = "select comments from user_tab_comments where table_name='EMP524'";

        try (Connection conn = getConnection();
             PreparedStatement stmt = conn.prepareStatement(sql)) {
            ResultSet rs = stmt.executeQuery(sql);
            while (rs.next()) {
                System.out.println("EMP524 表注释=" + rs.getString(1));
            }
            rs.close();
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
}

输出：

表注释=雇员表

建表语句：

create table emp524(
    id number(12),
    name nvarchar2(20),
    age number(3),
    primary key(id)
);


COMMENT ON TABLE emp524 IS '雇员表';
COMMENT ON COLUMN emp524.id IS 'ID';
COMMENT ON COLUMN emp524.name IS '姓名';
COMMENT ON COLUMN emp524.age IS '年龄';

END