elbraulio

替换为:

"INSERT into user_info (username,password,email_id,mobile number) VALUES('"+user+"','"+pass+"','"+email+"','"+mb+"')";

通过:

"INSERT into user_info (username,password,email_id,mobile_number) VALUES(?, ?, ?, ?)";

以后按相应的顺序插入值时

myStat.setString(1, user); 
myStat.setString(2, pass); 
myStat.setString(3, email); 
myStat.setString(4, mb);