RE: Using the Validator outside of Struts

[Raible, Matt]

Ok, now that I've gotten past super.init(config), onto the validator not
working.  I get the following error:

     [java] 2003-05-30 14:12:43,734 ERROR [Ajp13Processor[8009][0]]
Validator.validateFieldForRule(4
61) | reflection: null
     [java] java.lang.reflect.InvocationTargetException
     [java]     at sun.reflect.NativeMethodAccessorImpl.invoke0(Native
Method)
     [java]     at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39
)
     [java]     at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl
.java
:25)
     [java]     at java.lang.reflect.Method.invoke(Method.java:324)
     [java]     at
org.apache.commons.validator.Validator.validateFieldForRule(Validator.java:4
54)
     [java]     at
org.apache.commons.validator.Validator.validateField(Validator.java:544)
     [java]     at
org.apache.commons.validator.Validator.validate(Validator.java:582)
     [java]     at
com.comcast.cable.dmc.itd.cct.webapp.action.RegistrationServlet.execute(Regi
strat
ionServlet.java:146)

>From the following code:

        ValidatorResources resources = new ValidatorResources();

        InputStream rules =
 
getServletContext().getResourceAsStream("/WEB-INF/validator-rules.xml");

        ValidatorResourcesInitializer.initialize(resources, rules);

                InputStream custom =
getServletContext().getResourceAsStream("/WEB-INF/validator-rules-custom.xml
");
                
                ValidatorResourcesInitializer.initialize(resources, custom);
                
        InputStream forms =
 
getServletContext().getResourceAsStream("/WEB-INF/validation.xml");

        ValidatorResourcesInitializer.initialize(resources, forms);

        // Create a validator with the userForm
        Validator validator = new Validator(resources, "userFormEx");

        // Tell the validator which bean to validate against.
        validator.addResource(Validator.BEAN_KEY, userForm);

        // Validate the checkoutForm object and store the validation results
        try {
            // Execute the validation rules
146:        ValidatorResults results = validator.validate(); <<-- Error
occurs here

            if (log.isDebugEnabled()) {
                log.debug(results.getResultValueMap());
            }
        } catch (ValidatorException ex) {
            // Log the validation exception
            log.warn("A validation exception occurred", ex);
        }

The validator is working fine in my Action classes, just not outside.  I'm
trying to use it in a servlet that's not an Action because all my actions
(/do/*) are protected by form-based authentication.  This servlet is used
for users to self-register.  If anyone has an elegant solutions to
self-register (not using a servlet), let me know.

Thanks,

Matt

-----Original Message-----
From: Raible, Matt 
Sent: Friday, May 30, 2003 7:13 AM
To: '[EMAIL PROTECTED]'
Subject: Using the Validator outside of Struts


I'm trying to use the Validator to validate that a user has entered their
information in a self-registration servlet.

However, I'm getting a NullPointerException at the following line when
running a test using Cactus:

        InputStream rules =
 
getServletContext().getResourceAsStream("/WEB-INF/validator-rules.xml");

Error:

    [junit] java.lang.NullPointerException
    [junit]     at
javax.servlet.GenericServlet.getServletContext()Ljavax.servlet.ServletContex
t;(Ge
nericServlet.java:204)
    [junit]     at
com.comcast.cable.dmc.itd.cct.webapp.action.RegistrationServlet.execute(Ljav
ax.se
rvlet.http.HttpServletRequest;Ljavax.servlet.http.HttpServletResponse;)V(Reg
istrationServlet.java:12
2)

Full code:

        ValidatorResources resources = new ValidatorResources();

        InputStream rules =
 
getServletContext().getResourceAsStream("/WEB-INF/validator-rules.xml");

        ValidatorResourcesInitializer.initialize(resources, rules);

        InputStream forms =
 
getServletContext().getResourceAsStream("/WEB-INF/validation.xml");

        ValidatorResourcesInitializer.initialize(resources, forms);

        // Create a validator with the userForm
        Validator validator = new Validator(resources, "userFormEx");

        // Tell the validator which bean to validate against.  
        validator.addResource(Validator.BEAN_KEY, userForm);

        // Validate the checkoutForm object and store the validation results
        try {
            // Execute the validation rules
            ValidatorResults results = validator.validate();

            if (log.isDebugEnabled()) {
                log.debug(results.getResultValueMap());
            }
        } catch (ValidatorException ex) {
            // Log the validation exception
            log.warn("A validation exception occurred", ex);
        }

Any help is appreciated.

Thanks,

Matt


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