I am using GWT 1.5.3. How do I use Serializable? Eclipse produces an
error when I try to implement Serializable. It says I need to either:
1. import java.io.Serializable
2. import sunw.io.Serializable;
3. Create a public interface Serializable
Which is the right one to use?
On Mar 5, 10:59 pm, Daniel Jue <teamp...@gmail.com> wrote:
> What version of GWT are you using? Have you tried
>
> public class User implements Serializable{...}
>
> instead?
>
> On Thu, Mar 5, 2009 at 5:01 PM, fatjack1...@googlemail.com
>
> <fatjack1...@googlemail.com> wrote:
>
> > Hi Everyone,
>
> > Im having some issues encrypting a password. So heres my problem:
>
> > Basically I have a simple user name and password dialog box. I need to
> > encrypt the password. It would be easy to implement if I just wanted
> > to send the password over to the Server, but I need to send both the
> > user name and password. So, to try and overcome this problem I have
> > created a User Class as follows:
>
> > package com.project.client;
>
> > import com.google.gwt.user.client.rpc.IsSerializable;
>
> > public class User implements IsSerializable{
>
> > private String username;
> > private String password;
>
> > public User(String username, String password){
> > this.username = username;
> > this.password = password;
> > }
>
> > public String getUserName(){
> > return username;
> > }
>
> > public String getPassword(){
> > return password;
> > }
> > }
>
> > Here is my code on the client side when the user clicks 'Login'
>
> > public void onClick(Widget sender)
> > {
> > User attemptedLogin = new
> > User(userNameTextBox.getText(),
> > passwordTextBox.getText());
>
> > ServerService rpc = new ServerService();
> > rpc.checkLogin(attemptedLogin, callback);
> > }
>
> > So, it should send over the userName and Password to the server via an
> > RPC call.
>
> > Here is my code on the server (Incomplete at moment):
>
> > public ServerSQLData checkLogin(User message)
> > {
> > try {
> > dc.openConnection();
>
> > String password = message.getPassword();
> > System.out.println("password: " + password);
>
> > String hash = BCrypt.hashpw(password, BCrypt.gensalt());
> > }
> > return result;
> > }
>
> > However, when I run GWT it produces the following error messages:
> > Analyzing 'com.project.client.ServerStatusSQLService' for serializable
> > types
> > Analyzing methods:
> > public abstract com.project.client.ServerSQLData checkLogin
> > (com.project.client.User message)
> > Parameter: com.project.client.User message
> > com.project.client.User
> > Type 'com.project.client.User' was not serializable and
> > has no concrete serializable subtypes
>
> > I'm guessing from the error messages I havent implemented the
> > Serializable type correctly for the User class. Can someone see where
> > I am going wrong?
>
> > Cheers for your help in advance.
> > Jack
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