java 连接 mysql TestJDBC {

来源：互联网发布：高考物理满分知乎编辑：程序博客网时间：2024/05/21 14:45

import java.sql.*;

public class TestJDBC {

    public static void main(String[] args) {
        ResultSet rs = null;
        Statement stmt = null;
        Connection conn = null;
        try {
            String URL = "jdbc:mysql://127.0.0.1:3306/multi";
            String user = "root";
            String password = "123";
            Class.forName("com.mysql.jdbc.Driver");
            conn = DriverManager.getConnection(URL, user, password);
            stmt = conn.createStatement();
            rs = stmt.executeQuery("SELECT Rbh,Rgly,Rlx,Rbz FROM RJBB");
            while (rs.next()) {
                System.out.print(rs.getString("Rbh"));
                System.out.print(rs.getString("Rgly") + "  ");
                System.out.print(rs.getString("Rlx") + "  ");
                System.out.print(rs.getString("Rbz") + "  ");
                System.out.print("\n");
            }
        } catch (ClassNotFoundException e) {
            e.printStackTrace();
        } catch (SQLException e) {
            e.printStackTrace();
        } finally {
            try {
                if (rs != null) {
                    rs.close();
                    rs = null;
                }
                if (stmt != null) {
                    stmt.close();
                    stmt = null;
                }
                if (conn != null) {
                    conn.close();
                    conn = null;
                }
            } catch (SQLException e) {
                e.printStackTrace();
            }
        }
    }

}