Validatepassword Java

[Sueann]

Iwas going through LoginContext class but looks like it can only be used for SSO purpose.One other suggestion I received was to try and start a process which requires these credentials and see if it works or fails. But this does not look the proper approach.

There's a project called 'waffle' that wrapped this in a more usefull library, see e.g. the logonUser function in -jna/src/waffle/windows/auth/impl/WindowsAuthProviderImpl.java. This talks straight to the win32 advapi32.dll.

Hi All , I have a requirement where my client is using Java application and wants to validate Peoplesoft User Id and Password. I am able to connect to Peoplesoft database. The options in front of me are 1) Webservices : To validate User Id and password 2) LDAP: As per my knowledge this is used for Single Signon and how do i call the LDAP sign on peoplecode from JAVA applicaation Thanks in advance Regards, Durga.

Thanks Giovanni for your reply. I tried with PSJOA.JAR of JAVA1.6 version where I am facing the issue. It worked fine with PSJOA.JAR of JAVA 1.7. Looks like we have to ask client to update JAVA version to 1.7!!

Hmm, thinking about it, you may not need a CI at all. If you look in PeopleBooks for the Java CI template you will see an example of a java class connecting to PeopleSoft with a UserID and Password. I believe that you could leverage this function, but instead of actually instantiating a CI, just create the session and if it successfully creates, then the UserID and Password must be ok. If it does not create then the UserID and Password must be bad.

Forms are the traditional way for most web applications to gather significant information from the user. Whether it's a search form, a login screen or a multi-page registration wizard, Tapestry uses standard HTML forms, with HTTP POST actions by default. In addition, AJAX-based form submission is supported using Zones.

Tapestry provides support for creating and rendering forms, populating their fields, and validating user input. For simple cases, input validation is declarative, meaning you simply tell Tapestry what validations to apply to a given field, and it takes care of it on the server and (optionally) on the client as well. In addition, you can provide event handler methods in your page or component classes to handle more complex validation scenarios.

When rendering, the Form component emits two events: first, "prepareForRender", then "prepare". These allow the Form's container to set up any fields or properties that will be referenced in the form. For example, this is a good place to create a temporary entity object to be rendered, or to load an entity from a database to be edited.

For Tapestry 4 Users: Tapestry 5 does not use the fragile "form rewind" approach from Tapestry 4. Instead, a hidden field generated during the render stores the information needed to process the form submission.

Next, the Form determines if there have been any validation errors. If there have been, then the submission is considered a failure, and a "failure" event is emitted. If there have been no validation errors, then a "success" event is emitted.

You handle events by providing methods in your page or component class, either following the onEventFromComponent() naming convention or using the OnEvent annotation. For example:

Associated with the Form is a ValidationTracker that tracks all the provided user input and validation errors for every field in the form. The tracker can be provided to the Form via the Form's tracker parameter, but this is rarely necessary.

In your own logic, it is possible to record your own errors. Form includes two different versions of method recordError(), one of which specifies a Field (an interface implemented by all form element components), and one of which is for "global" errors, not associated with any particular field. If the error concerns only a single field, you should use the first version so that the field will be highlighted.

Starting in Tapestry 5.4, the default behavior for server-side validation failures is to re-render the page within the same request (rather than emitting a redirect). This removes the need to use a session-persistent field to store the validation tracker when validation failures occur.

As with other action requests, the result of a form submission (except when using Zones) is to send a redirect to the client, which results in a second request (to re-render the page). The ValidationTracker must be persisted (generally in the HttpSession) across these two requests in order to prevent the loss of validation information. Fortunately, the default ValidationTracker provided by the Form component is persistent, so you don't normally have to worry about it.

Note that the onValidateFromLoginForm() and onSuccess() methods are not public; event handler methods can have any visibility, even private. Package private (that is, no modifier) is the typical use, as it allows the component to be tested, from a test case class in the same package.

Because a form submission is really two requests: the submission itself (which results in a redirect response), then a second request for the page (which results in a re-rendering of the page), it is necessary to persist the userName field between the two requests, by using the @Persist annotation. This would be necessary for the password field as well, except that the PasswordField component never renders a value.

To avoid data loss, fields whose values are stored in the HttpSession (such as userName, above) must be serializable, particularly if you want to be able to cluster your application or preserve sessions across server restarts.

Finally, notice how business logic fits into validation. The UserAuthenticator service is responsible for ensuring that the userName and (plaintext) password are valid. When it returns false, we ask the Form component to record an error. We provide the PasswordField instance as the first parameter; this ensures that the password field, and its label, are decorated when the Form is re-rendered, to present the errors to the user.

The Login page template below contains a minimal amount of Tapestry instrumentation and references some of the Bootstrap CSS classes (Bootstrap is automatically integrated into each page by default, starting with Tapestry 5.4).

For the TextField, we provide a component id, userName. We could specify the value parameter, but the default is to match the TextField's id against a property of the container, the Login page, if such a property exists.

As a rule of thumb, you should always give your fields a specific id (this id will be used to generate the name and id attributes of the rendered tag). Being allowed to omit the value parameter helps to keep the template from getting too cluttered.

The above example is a very basic form which allows the fields to be empty. However, with a little more effort we can add client-side validation to prevent the user from submitting the form with either field empty.

The @Validate annotation can take the place of the validate parameter of TextField, PasswordField, TextArea and other components. When the validate parameter is not bound in the template file, the component will check for the @Validate annotation and use its value as the validation definition.

When the tapestry.enable-html5-support configuration symbol is set to true (it is false by default), the Tapestry's built-in validators will automatically enable the HTML5-specific "type" and validation attributes to the rendered HTML of Tapestry's form components, triggering the HTML5 client-side validation behavior built into most modern browsers. For example, if you use the "email" and "required" validators, like this:

Some validation can't, or shouldn't, be done on the client side. How do we know if the password is correct? Short of downloading all users and passwords to the client, we really need to do the validation on the server.

This is the validate event handler from the loginForm component. It is invoked once all the components have had a chance to read values out of the request, do their own validations, and update the properties they are bound to.

In versions of Tapestry prior to 5.4, a form with validation errors would result in a redirect response to the client; often, temporary server-side data (such as the userName field) would be lost. Starting in 5.4, submitting a form with validation errors results in the new page being rendered in the same request as the form submission.

The message can be customized by adding an entry to the page's message catalog (or the containing component's message catalog). As with any localized property, this can also go into the application's message catalog.

For example, if the form ID is "loginForm", the field ID is "userName", and the validator is "required" then Tapestry will first look for a "loginForm-userName-required-message" key in the message catalog, and then for a "userName-required-message" key.

The validation message in the message catalog may contain printf-style format strings (such as %s) to indicate where the validate parameter's value will be inserted. For example, if the validate parameter in the template is minLength=3 and the validation message is "User name must be at least %s characters" then the corresponding error message would be "User name must be at least 5 characters".

The BeanEditForm component also supports validation message customizing. The search for messages is similar; the formId is the component id of the BeanEditForm component (not the Form component it contains). The fieldId is the property name.

Lists of validators can be combined into validation macros. This mechanism is convenient for ensuring consistent validation rules across an application. To create a validation macro, just contribute to the ValidatorMacro Service in your module class (normally AppModule.java), by adding a new entry to the configuration object, as shown below. The first parameter is the name of your macro, the second is a comma-separated list of validators:

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