正式工作：PreparedStatement 参与的

2017-07-12   17:14:10

package com.zczr.j03.jdbc;


import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.PreparedStatement;
import java.sql.ResultSet;



public class JDBC_Test02 {

    static Connection conn = null;
    static PreparedStatement ps = null;
    static ResultSet rs = null;
    
    public static void main(String[] args) throws Exception {
//        InputStreamReader ir = new InputStreamReader(System.in);
//        BufferedReader bf = new BufferedReader(ir);
        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
        System.out.println("请输入年龄：");
        int inputAge = Integer.parseInt(br.readLine());
        
        Class.forName("com.mysql.jdbc.Driver");
        
        conn = DriverManager.getConnection("jdbc:mysql://localhost:3306/java03", "root", "1234");
        
        String sql = "select id, name from student where age > ?";
        ps = conn.prepareStatement(sql);
        ps.setInt(1, inputAge);
        
        rs = ps.executeQuery();
        while(rs.next()) {
            System.out.print(rs.getInt("id")+ " ");
            System.out.print(rs.getString("name") + " ");
            System.out.println();
        }
        rs.close();
        ps.close();
        conn.close();
    }

}