preparedStatement插入

package com.song.testjdbc.lesson2;

import com.song.testjdbc.lesson2.utils.JdbcUtils;

import java.sql.*;

public class zhuru {
    public static void main(String[] args) {
        Connection connection=null;
        PreparedStatement preparedStatement = null;
        ResultSet resultSet = null;
        try {
            connection = JdbcUtils.getConnection();
            //区别 使用问号占位符代替参数
            String sql = "INSERT into tb_user(userid,username,userPwd,userAge) VALUES (?,?,?,?)";

            preparedStatement = connection.prepareCall(sql);//预编译
            //手动赋值
            preparedStatement.setInt(1,4444);
            preparedStatement.setString(2,"陈欢");
            preparedStatement.setString(3,"13");
            preparedStatement.setString(4,"13");

            int i = preparedStatement.executeUpdate();
            if (i>0){
                System.out.println("执行成功");
            }
        } catch (SQLException e) {
            e.printStackTrace();
        }
    }
}

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