Previously, I wrote a tutorial on integrating Spring Security and ExtJS login form. Now I am integrating the same Spring Security code with the Sencha Touch login form. Here I will cover the implementation of the form only and 2 use cases; login & logout. The sample code is based on Sencha Touch 1.1.0 and the foloder structure is following the Sencha Touch MVC.
First, lets see the login form and controller. The form has 2 fields, login id & password. When you click the login button, the form is submitted to http://<ownurl>/j_spring_security_check (the defLoginUrl in line 4 is defined in login.jsp).
Just a note, if you are using Sencha Touch 1.0 then you will need to implement a listener within the form to catch the “submit” and “exception” event. This is because there is a minor defect in the Ext.form.FormPanel submit function and it caused the form to ignore “success” & “failure” function in the submit.
test.views.LoginForm = Ext.extend(Ext.form.FormPanel, {
scroll: 'vertical',
fullscreen: true,
url: defLoginUrl,
items: [{
xtype: 'textfield',
label: 'Login',
name: 'j_username'
},{
xtype: 'passwordfield',
label: 'Password',
name: 'j_password'
}],
dockedItems: [{
xtype: 'toolbar',
dock: 'bottom',
items: [{
text: 'Reset',
handler: function() {
test.views.loginForm.reset();
}
},{
text: 'Login',
ui: 'confirm',
handler: function() {
Ext.dispatch({
controller: test.controllers.loginController,
action: 'submit',
data: test.views.loginForm
});
}
}]
}],
initComponent: function() {
test.views.LoginForm.superclass.initComponent.apply(this, arguments);
}
});
test.controllers.loginController = new Ext.Controller({
submit: function(options) {
var theForm = options.data;
test.views.loginForm.submit({
method: 'POST',
waitMsg: {
message: 'Processing',
cls : 'demos-loading'
},
scope: this,
success: function(form, response) {
window.location = '/';
},
failure: function(form, response) {
Ext.Msg.alert('Warning', response.errorMessage);
}
});
}
});
Depending on the result of the authentication the server side will return a JSON data. The format is
{"username":null,"errorMessage":"Login failed. Try again.","loggedIn":false,"success":false}
Once authenticated, you will see the main page with a logout button. The code is shown below.
test.views.Dashboard = Ext.extend(Ext.Panel, {
fullscreen: true,
dockedItems: [{
xtype: 'toolbar',
title: 'Dashboard',
dock: 'top',
items: [{
xtype: 'button',
text: 'Logout',
ui: 'confirm',
handler: function() {
Ext.dispatch({
controller: test.controllers.dashboardController,
action: 'logout'
});
},
scope: this
}]
}],
html: '<p>Welcome!</p>',
initComponent: function() {
test.views.Dashboard.superclass.initComponent.apply(this, arguments);
}
});
test.controllers.dashboardController = new Ext.Controller({
logout: function(options) {
window.location = '/j_spring_security_logout';
}
});
Hope that is useful. Happy coding!
References:
