postgresql - Implementing a java bean into a jsp servlet -
i trying connect jsp servlets posgress database , using java bean class playing role of middle man. experiencing difficulties making registration form store user information database. appreciate if kindly me out.
thanks lot in advance.
jsp servlet:
<%@page contenttype="text/html" pageencoding="utf-8"%> <head> <meta http-equiv="content-type" content="text/html; charset=utf-8"> <title>register here</title> </head> <body> <form method="post" action="registration.jsp"> <center> <table border="1" width="30%" cellpadding="5"> <thead> <tr> <th colspan="2">enter information here</th> </tr> </thead> <tbody> <tr> <td>first name</td> <td><input type="text" name="fname" value="" /></td> </tr> <tr> <td>last name</td> <td><input type="text" name="lname" value="" /></td> </tr> <tr> <td>email</td> <td><input type="text" name="email" value="" /></td> </tr> <tr> <td>user name</td> <td><input type="text" name="uname" value="" /></td> </tr> <tr> <td>password</td> <td><input type="password" name="pass" value="" /></td> </tr> <tr> <td>current country</td> <td><input type="text" name="country" value="" /></td> </tr> <tr> <td>current city</td> <td><input type="text" name="city" value="" /></td> </tr> <tr> <td><input type="submit" value="submit" /></td> <td><input type="reset" value="reset" /></td> </tr> <tr> <td colspan="2">already have account? <a href="index.jsp">login here</a></td> </tr> </tbody> </table> </center> </form> </body> the java bean use :
public class userbean { private int id; private string username; private string password; private string email; private string firstname; private string lastname; private string enddate; private boolean validated; public userbean() { // empty constructor } public int getid() { return id; } public string getusername() { return username; } public string getpassword() { return password; } public string getemail() { return email; } public string getfirstname() { return firstname; } public string getlastname() { return lastname; } public string getenddate() { return enddate; } public boolean isvalidated() { return validated; } public void setid(int id) { this.id = id; } public void setusername(string username) { this.username = username; } public void setpassword(string password) { this.password = password; } public void setemail(string email) { this.email = email; } public void setfirstname(string firstname) { this.firstname = firstname; } public void setlastname(string lastname) { this.lastname = lastname; } public void setenddate(string enddate) { this.enddate = enddate; } public void setvalidated(boolean validated) { this.validated = validated; } }
your pojo javabean won't magically populated data. has no connection database , no way or save data.
you need controller fetches data db, creates model objects, , populates them data. controller responsible saving beans
you write it's better use existing orm frameworks jpa2, custom persistence provider api hibernate, or mybatis. if want, can hand-roll controller direct jdbc calls, injecting connection environment, tends produce lot of boilerplate code little benefit things spring jdbc smooth things over.
some ides, netbeans , eclipse, can auto-generate models , controllers you, though i've never been happy results (particularly failure use parent-class , generic methods , lack of sort of useful error handling).
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