想把用户信息保存到数据库中，不知道为什么就错了，求解

package mysql;
import java.sql.*;
import java.util.Properties;

import org.omg.CORBA.StructMemberHelper;

import com.mysql.jdbc.JDBC4CallableStatement;

public class IncreasUser {
   
     private String PROP_FLIE="mysql.ini";
     private  String driver;
     private String  url;
     private String user;
     private String pass;
     
    public  void insertData (String userName,String userPass)throws Exception {
         //使用properties类来加载属性文件
         Properties props=new Properties();
         props.load(new FileInputStream(PROP_FLIE));
         driver=props.getProperty("driver");
         url=props.getProperty("url");
         user=props.getProperty("user");
         pass=props.getProperty("pass");
         
         Class.forName(driver);//加载数据库驱动
         try(
                 Connection conn=DriverManager.getConnection(url,user,pass);//获取数据库连接
                PreparedStatement pstmt=conn.prepareStatement("insert into imguser (user_name,user_pass) values(?,?)"))//插入用户信息
               {
                 pstmt.setObject(2, userName);
                 pstmt.setObject(3,userPass);
                 pstmt.executeUpdate();//更新数据库
                 pstmt.close();//关闭数据库的连接
                 }
         catch (Exception e) {
            // TODO: handle exception
             System.out.println(e.getMessage());
        }
               
     }
    public static void main(String[] args) throws Exception {
        IncreasUser iUser=new IncreasUser();
        String s1="yang";
        String s2="13143344";
        iUser.insertData(s1,s2);
        
    }
   
   
}