Example usage for javax.servlet.jsp JspException JspException

Introduction

In this page you can find the example usage for javax.servlet.jsp JspException JspException.

Prototype

public JspException(Throwable cause) 

Source Link

Document

Constructs a new JspException with the specified cause.

Usage

From source file:org.apache.struts.taglib.tiles.InsertTag.java

/**
 * End of Process tag attribute "definition".
 * Overload definition with tag attributes "template" and "role".
 * Then, create appropriate tag handler.
 * @param definition Definition to process.
 * @return Appropriate TagHandler.//  w  w  w. j  av a2  s . co  m
 * @throws JspException InstantiationException Can't create requested controller
 */
protected TagHandler processDefinition(ComponentDefinition definition) throws JspException {
    // Declare local variable in order to not change Tag attribute values.
    String role = this.role;
    String page = this.page;
    Controller controller = null;

    try {
        controller = definition.getOrCreateController();

        // Overload definition with tag's template and role.
        if (role == null) {
            role = definition.getRole();
        }

        if (page == null) {
            page = definition.getTemplate();
        }

        if (controllerName != null) {
            controller = ComponentDefinition.createController(controllerName, controllerType);
        }

        // Can check if page is set
        return new InsertHandler(definition.getAttributes(), page, role, controller);

    } catch (InstantiationException ex) {
        throw new JspException(ex.getMessage());
    }
}

---

From source file:org.apache.struts.taglib.tiles.InsertTag.java

/**
 * Process a bean.// ww  w  .  ja v a  2s. com
 * Get bean value, eventually using property and scope. Found value is process by processObjectValue().
 * @param beanName Name of the bean
 * @param beanProperty Property in the bean, or null.
 * @param beanScope bean scope, or null.
 * @return Appropriate TagHandler.
 * @throws JspException - NoSuchDefinitionException No value associated to bean.
 * @throws JspException an error occur while reading bean, or no definition found.
 * @throws JspException - Throws by underlying nested call to processDefinitionName()
 */
protected TagHandler processBean(String beanName, String beanProperty, String beanScope) throws JspException {

    Object beanValue = TagUtils.getRealValueFromBean(beanName, beanProperty, beanScope, pageContext);

    if (beanValue == null) {
        throw new JspException("Error - Tag Insert : No value defined for bean '" + beanName
                + "' with property '" + beanProperty + "' in scope '" + beanScope + "'.");
    }

    return processObjectValue(beanValue);
}

---

From source file:org.apache.struts.taglib.tiles.InsertTag.java

/**
 * Process tag attribute "attribute".//w  w  w.  j  a v a 2  s. c  o m
 * Get value from component attribute.
 * Found value is process by processObjectValue().
 * @param name Name of the attribute.
 * @return Appropriate TagHandler.
 * @throws JspException - NoSuchDefinitionException No Definition  found for name.
 * @throws JspException - Throws by underlying nested call to processDefinitionName()
 */
public TagHandler processAttribute(String name) throws JspException {
    Object attrValue = getCurrentContext().getAttribute(name);

    if (attrValue == null) {
        throw new JspException("Error - Tag Insert : No value found for attribute '" + name + "'.");
    }

    return processObjectValue(attrValue);
}

---

From source file:org.apache.struts.taglib.tiles.PutTag.java

/**
 * Compute real value according to tag attributes.
 * @throws JspException If something goes wrong while getting value from bean.
 *//*  w w w  .  j a va  2s .  c o  m*/
protected void computeRealValue() throws JspException {
    // Compute real value from attributes set.
    realValue = value;

    // If realValue is not set, value must come from body
    if (value == null && beanName == null) {
        // Test body content in case of empty body.
        if (body != null) {
            realValue = body;
        } else {
            realValue = "";
        }
    }

    // Does value comes from a bean ?
    if (realValue == null && beanName != null) {
        getRealValueFromBean();
        return;
    }

    // Is there a type set ?
    // First check direct attribute, and translate it to a valueType.
    // Then, evaluate valueType, and create requested typed attribute.
    // If valueType is not set, use the value "as is".
    if (valueType == null && direct != null) {
        if (Boolean.valueOf(direct).booleanValue() == true) {
            valueType = "string";
        } else {
            valueType = "page";
        }
    }

    if (realValue != null && valueType != null && !(value instanceof AttributeDefinition)) {

        String strValue = realValue.toString();
        if (valueType.equalsIgnoreCase("string")) {
            realValue = new DirectStringAttribute(strValue);

        } else if (valueType.equalsIgnoreCase("page")) {
            realValue = new PathAttribute(strValue);

        } else if (valueType.equalsIgnoreCase("template")) {
            realValue = new PathAttribute(strValue);

        } else if (valueType.equalsIgnoreCase("instance")) {
            realValue = new DefinitionNameAttribute(strValue);

        } else if (valueType.equalsIgnoreCase("definition")) {
            realValue = new DefinitionNameAttribute(strValue);

        } else { // bad type
            throw new JspException("Warning - Tag put : Bad type '" + valueType + "'.");
        }
    }

}

---

From source file:org.apache.struts.taglib.tiles.PutTag.java

/**
 * Extract real value from specified bean.
 * @throws JspException If something goes wrong while getting value from bean.
 *///from   w ww  .ja v a  2s. com
protected void getRealValueFromBean() throws JspException {
    try {
        Object bean = TagUtils.retrieveBean(beanName, beanScope, pageContext);
        if (bean != null && beanProperty != null) {
            realValue = PropertyUtils.getProperty(bean, beanProperty);
        } else {
            realValue = bean; // value can be null
        }

    } catch (NoSuchMethodException ex) {
        throw new JspException("Error - component.PutAttributeTag : Error while retrieving value from bean '"
                + beanName + "' with property '" + beanProperty + "' in scope '" + beanScope
                + "'. (exception : " + ex.getMessage());

    } catch (InvocationTargetException ex) {
        throw new JspException("Error - component.PutAttributeTag : Error while retrieving value from bean '"
                + beanName + "' with property '" + beanProperty + "' in scope '" + beanScope
                + "'. (exception : " + ex.getMessage());

    } catch (IllegalAccessException ex) {
        throw new JspException("Error - component.PutAttributeTag : Error while retrieving value from bean '"
                + beanName + "' with property '" + beanProperty + "' in scope '" + beanScope
                + "'. (exception : " + ex.getMessage());
    }
}

---

From source file:org.apache.struts.taglib.tiles.PutTag.java

/**
 * Find parent tag which must implement AttributeContainer.
 * @throws JspException If we can't find an appropriate enclosing tag.
 *//*from w  w w .j av  a  2 s . com*/
protected PutTagParent findEnclosingPutTagParent() throws JspException {
    try {
        PutTagParent parent = (PutTagParent) findAncestorWithClass(this, PutTagParent.class);

        if (parent == null) {
            throw new JspException("Error - tag put : enclosing tag doesn't accept 'put' tag.");
        }

        return parent;

    } catch (ClassCastException ex) {
        throw new JspException("Error - tag put : enclosing tag doesn't accept 'put' tag.");
    }
}

---

From source file:org.apache.struts.taglib.tiles.util.TagUtils.java

/**
 * Locate and return the specified property of the specified bean, from
 * an optionally specified scope, in the specified page context.
 *
 * @param pageContext Page context to be searched.
 * @param beanName Name of the bean to be retrieved.
 * @param beanProperty Name of the property to be retrieved, or
 *  <code>null</code> to retrieve the bean itself.
 * @param beanScope Scope to be searched (page, request, session, application)
 *  or <code>null</code> to use <code>findAttribute()</code> instead.
 *
 * @exception JspException Scope name is not recognized as a valid scope
 * @exception JspException if the specified bean is not found
 * @exception JspException if accessing this property causes an
 *  IllegalAccessException, IllegalArgumentException,
 *  InvocationTargetException, or NoSuchMethodException
 *//*from ww  w . j a v  a 2s. c o  m*/
public static Object getRealValueFromBean(String beanName, String beanProperty, String beanScope,
        PageContext pageContext) throws JspException {

    try {
        Object realValue;
        Object bean = retrieveBean(beanName, beanScope, pageContext);
        if (bean != null && beanProperty != null) {
            realValue = PropertyUtils.getProperty(bean, beanProperty);
        } else {
            realValue = bean; // value can be null
        }
        return realValue;

    } catch (NoSuchMethodException ex) {
        throw new JspException("Error - component.PutAttributeTag : Error while retrieving value from bean '"
                + beanName + "' with property '" + beanProperty + "' in scope '" + beanScope
                + "'. (exception : " + ex.getMessage());

    } catch (InvocationTargetException ex) {
        throw new JspException("Error - component.PutAttributeTag : Error while retrieving value from bean '"
                + beanName + "' with property '" + beanProperty + "' in scope '" + beanScope
                + "'. (exception : " + ex.getMessage());

    } catch (IllegalAccessException ex) {
        throw new JspException("Error - component.PutAttributeTag : Error while retrieving value from bean '"
                + beanName + "' with property '" + beanProperty + "' in scope '" + beanScope
                + "'. (exception : " + ex.getMessage());
    }
}

---

From source file:org.apache.struts.taglib.tiles.util.TagUtils.java

/**
 * Store bean in requested context./*from w w w.  j  ava  2 s. co  m*/
 * If scope is <code>null</code>, save it in REQUEST_SCOPE context.
 *
 * @param pageContext Current pageContext.
 * @param name Name of the bean.
 * @param scope Scope under which bean is saved (page, request, session, application)
 *  or <code>null</code> to store in <code>request()</code> instead.
 * @param value Bean value to store.
 *
 * @exception JspException Scope name is not recognized as a valid scope
 */
public static void setAttribute(PageContext pageContext, String name, Object value, String scope)
        throws JspException {

    if (scope == null)
        pageContext.setAttribute(name, value, PageContext.REQUEST_SCOPE);
    else if (scope.equalsIgnoreCase("page"))
        pageContext.setAttribute(name, value, PageContext.PAGE_SCOPE);
    else if (scope.equalsIgnoreCase("request"))
        pageContext.setAttribute(name, value, PageContext.REQUEST_SCOPE);
    else if (scope.equalsIgnoreCase("session"))
        pageContext.setAttribute(name, value, PageContext.SESSION_SCOPE);
    else if (scope.equalsIgnoreCase("application"))
        pageContext.setAttribute(name, value, PageContext.APPLICATION_SCOPE);
    else {
        throw new JspException("Error - bad scope name '" + scope + "'");
    }
}

---

From source file:org.apache.struts.taglib.tiles.util.TagUtils.java

/**
 * Get component definition by its name.
 * @param name Definition name.//from w  w w  . j a v  a 2s. co m
 * @param pageContext The PageContext for the current page.
 * @throws JspException -
 */
public static ComponentDefinition getComponentDefinition(String name, PageContext pageContext)
        throws JspException {

    try {
        return TilesUtil.getDefinition(name, pageContext.getRequest(), pageContext.getServletContext());

    } catch (NoSuchDefinitionException ex) {
        throw new JspException("Error : Can't get component definition for '" + name
                + "'. Check if this name exist in component definitions.");
    } catch (FactoryNotFoundException ex) { // factory not found.
        throw new JspException(ex.getMessage());

    } catch (DefinitionsFactoryException ex) {
        if (debug)
            ex.printStackTrace();
        // Save exception to be able to show it later
        saveException(pageContext, ex);
        throw new JspException(ex.getMessage());
    }
}

---

From source file:org.apache.struts.tiles.taglib.InsertTag.java

/**
 * Get instantiated Controller.// w  ww . ja v a 2  s. c om
 * Return controller denoted by controllerType, or <code>null</code> if controllerType
 * is null.
 * @throws JspException If controller can't be created.
 */
private Controller getController() throws JspException {
    if (controllerType == null) {
        return null;
    }

    try {
        return ComponentDefinition.createController(controllerName, controllerType);

    } catch (InstantiationException ex) {
        throw new JspException(ex);
    }
}

---

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