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.html.SelectTag.java

/**
 * Calculate the match values we will actually be using.
 *
 * @throws JspException//from   w  w  w .ja v  a2 s  .c om
 */
private void calculateMatchValues() throws JspException {
    if (this.value != null) {
        this.match = new String[1];
        this.match[0] = this.value;
    } else {
        Object bean = TagUtils.getInstance().lookup(pageContext, name, null);

        if (bean == null) {
            JspException e = new JspException(messages.getMessage("getter.bean", name));

            TagUtils.getInstance().saveException(pageContext, e);
            throw e;
        }

        try {
            this.match = BeanUtils.getArrayProperty(bean, property);

            if (this.match == null) {
                this.match = new String[0];
            }
        } catch (IllegalAccessException e) {
            TagUtils.getInstance().saveException(pageContext, e);
            throw new JspException(messages.getMessage("getter.access", property, name));
        } catch (InvocationTargetException e) {
            Throwable t = e.getTargetException();

            TagUtils.getInstance().saveException(pageContext, t);
            throw new JspException(messages.getMessage("getter.result", property, t.toString()));
        } catch (NoSuchMethodException e) {
            TagUtils.getInstance().saveException(pageContext, e);
            throw new JspException(messages.getMessage("getter.method", property, name));
        }
    }
}

---

From source file:org.apache.struts.taglib.logic.CompareTagBase.java

/**
 * Evaluate the condition that is being tested by this particular tag, and
 * return <code>true</code> if the nested body content of this tag should
 * be evaluated, or <code>false</code> if it should be skipped. This
 * method must be implemented by concrete subclasses.
 *
 * @param desired1 First desired value for a true result (-1, 0, +1)
 * @param desired2 Second desired value for a true result (-1, 0, +1)
 * @throws JspException if a JSP exception occurs
 *///from  w  w  w .ja  v a 2  s. co m
protected boolean condition(int desired1, int desired2) throws JspException {
    // Acquire the value and determine the test type
    int type = -1;
    double doubleValue = 0.0;
    long longValue = 0;

    if ((type < 0) && (value.length() > 0)) {
        try {
            doubleValue = Double.parseDouble(value);
            type = DOUBLE_COMPARE;
        } catch (NumberFormatException e) {
            ;
        }
    }

    if ((type < 0) && (value.length() > 0)) {
        try {
            longValue = Long.parseLong(value);
            type = LONG_COMPARE;
        } catch (NumberFormatException e) {
            ;
        }
    }

    if (type < 0) {
        type = STRING_COMPARE;
    }

    // Acquire the unconverted variable value
    Object variable = null;

    if (cookie != null) {
        Cookie[] cookies = ((HttpServletRequest) pageContext.getRequest()).getCookies();

        if (cookies == null) {
            cookies = new Cookie[0];
        }

        for (int i = 0; i < cookies.length; i++) {
            if (cookie.equals(cookies[i].getName())) {
                variable = cookies[i].getValue();

                break;
            }
        }
    } else if (header != null) {
        variable = ((HttpServletRequest) pageContext.getRequest()).getHeader(header);
    } else if (name != null) {
        Object bean = TagUtils.getInstance().lookup(pageContext, name, scope);

        if (property != null) {
            if (bean == null) {
                JspException e = new JspException(messages.getMessage("logic.bean", name));

                TagUtils.getInstance().saveException(pageContext, e);
                throw e;
            }

            try {
                variable = PropertyUtils.getProperty(bean, property);
            } catch (InvocationTargetException e) {
                Throwable t = e.getTargetException();

                if (t == null) {
                    t = e;
                }

                TagUtils.getInstance().saveException(pageContext, t);
                throw new JspException(messages.getMessage("logic.property", name, property, t.toString()));
            } catch (Throwable t) {
                TagUtils.getInstance().saveException(pageContext, t);
                throw new JspException(messages.getMessage("logic.property", name, property, t.toString()));
            }
        } else {
            variable = bean;
        }
    } else if (parameter != null) {
        variable = pageContext.getRequest().getParameter(parameter);
    } else {
        JspException e = new JspException(messages.getMessage("logic.selector"));

        TagUtils.getInstance().saveException(pageContext, e);
        throw e;
    }

    if (variable == null) {
        variable = ""; // Coerce null to a zero-length String
    }

    // Perform the appropriate comparison
    int result = 0;

    if (type == DOUBLE_COMPARE) {
        try {
            double doubleVariable = Double.parseDouble(variable.toString());

            if (doubleVariable < doubleValue) {
                result = -1;
            } else if (doubleVariable > doubleValue) {
                result = +1;
            }
        } catch (NumberFormatException e) {
            result = variable.toString().compareTo(value);
        }
    } else if (type == LONG_COMPARE) {
        try {
            long longVariable = Long.parseLong(variable.toString());

            if (longVariable < longValue) {
                result = -1;
            } else if (longVariable > longValue) {
                result = +1;
            }
        } catch (NumberFormatException e) {
            result = variable.toString().compareTo(value);
        }
    } else {
        result = variable.toString().compareTo(value);
    }

    // Normalize the result
    if (result < 0) {
        result = -1;
    } else if (result > 0) {
        result = +1;
    }

    // Return true if the result matches either desired value
    return ((result == desired1) || (result == desired2));
}

---

From source file:org.apache.struts.taglib.logic.IterateTag.java

/**
 * Construct an iterator for the specified collection, and begin
 * looping through the body once per element.
 *
 * @exception JspException if a JSP exception has occurred
 *//*from w ww.  j a  v  a  2 s .co  m*/
public int doStartTag() throws JspException {

    // Acquire the collection we are going to iterate over
    Object collection = this.collection;
    if (collection == null) {
        collection = RequestUtils.lookup(pageContext, name, property, scope);
    }

    if (collection == null) {
        JspException e = new JspException(messages.getMessage("iterate.collection"));
        RequestUtils.saveException(pageContext, e);
        throw e;
    }

    // Construct an iterator for this collection
    if (collection.getClass().isArray()) {
        try {
            // If we're lucky, it is an array of objects
            // that we can iterate over with no copying
            iterator = Arrays.asList((Object[]) collection).iterator();
        } catch (ClassCastException e) {
            // Rats -- it is an array of primitives
            int length = Array.getLength(collection);
            ArrayList c = new ArrayList(length);
            for (int i = 0; i < length; i++) {
                c.add(Array.get(collection, i));
            }
            iterator = c.iterator();
        }
    } else if (collection instanceof Collection) {
        iterator = ((Collection) collection).iterator();
    } else if (collection instanceof Iterator) {
        iterator = (Iterator) collection;
    } else if (collection instanceof Map) {
        iterator = ((Map) collection).entrySet().iterator();
    } else if (collection instanceof Enumeration) {
        iterator = IteratorUtils.asIterator((Enumeration) collection);
    } else {
        JspException e = new JspException(messages.getMessage("iterate.iterator"));
        RequestUtils.saveException(pageContext, e);
        throw e;
    }

    // Calculate the starting offset
    if (offset == null) {
        offsetValue = 0;
    } else {
        try {
            offsetValue = Integer.parseInt(offset);
        } catch (NumberFormatException e) {
            Integer offsetObject = (Integer) RequestUtils.lookup(pageContext, offset, null);
            if (offsetObject == null) {
                offsetValue = 0;
            } else {
                offsetValue = offsetObject.intValue();
            }
        }
    }
    if (offsetValue < 0) {
        offsetValue = 0;
    }

    // Calculate the rendering length
    if (length == null) {
        lengthValue = 0;
    } else {
        try {
            lengthValue = Integer.parseInt(length);
        } catch (NumberFormatException e) {
            Integer lengthObject = (Integer) RequestUtils.lookup(pageContext, length, null);
            if (lengthObject == null) {
                lengthValue = 0;
            } else {
                lengthValue = lengthObject.intValue();
            }
        }
    }
    if (lengthValue < 0) {
        lengthValue = 0;
    }
    lengthCount = 0;

    // Skip the leading elements up to the starting offset
    for (int i = 0; i < offsetValue; i++) {
        if (iterator.hasNext()) {
            iterator.next();
        }
    }

    // Store the first value and evaluate, or skip the body if none
    if (iterator.hasNext()) {
        Object element = iterator.next();
        if (element == null) {
            pageContext.removeAttribute(id);
        } else {
            pageContext.setAttribute(id, element);
        }
        lengthCount++;
        started = true;
        if (indexId != null) {
            pageContext.setAttribute(indexId, new Integer(getIndex()));
        }
        return (EVAL_BODY_TAG);
    } else {
        return (SKIP_BODY);
    }

}

---

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

/**
 * Retrieves the value from request scope and if it isn't already an
 * <code>ActionMessages</code>, some classes are converted to one.
 *
 * @param pageContext The PageContext for the current page
 * @param paramName   Key for parameter value
 * @return ActionErrors in page context.
 * @throws JspException//w  w  w  .ja  va2  s.  c om
 */
public ActionMessages getActionMessages(PageContext pageContext, String paramName) throws JspException {
    ActionMessages am = new ActionMessages();

    Object value = pageContext.findAttribute(paramName);

    if (value != null) {
        try {
            if (value instanceof String) {
                am.add(ActionMessages.GLOBAL_MESSAGE, new ActionMessage((String) value));
            } else if (value instanceof String[]) {
                String[] keys = (String[]) value;

                for (int i = 0; i < keys.length; i++) {
                    am.add(ActionMessages.GLOBAL_MESSAGE, new ActionMessage(keys[i]));
                }
            } else if (value instanceof ActionErrors) {
                ActionMessages m = (ActionMessages) value;

                am.add(m);
            } else if (value instanceof ActionMessages) {
                am = (ActionMessages) value;
            } else {
                throw new JspException(
                        messages.getMessage("actionMessages.errors", value.getClass().getName()));
            }
        } catch (JspException e) {
            throw e;
        } catch (Exception e) {
            log.warn("Unable to retieve ActionMessage for paramName : " + paramName, e);
        }
    }

    return am;
}

---

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

/**
 * Locate and return the specified property of the specified bean, from an
 * optionally specified scope, in the specified page context.  If an
 * exception is thrown, it will have already been saved via a call to
 * <code>saveException()</code>.
 *
 * @param pageContext Page context to be searched
 * @param name        Name of the bean to be retrieved
 * @param property    Name of the property to be retrieved, or
 *                    <code>null</code> to retrieve the bean itself
 * @param scope       Scope to be searched (page, request, session,
 *                    application) or <code>null</code> to use
 *                    <code>findAttribute()</code> instead
 * @return property of specified JavaBean
 * @throws JspException if an invalid scope name is requested
 * @throws JspException if the specified bean is not found
 * @throws JspException if accessing this property causes an
 *                      IllegalAccessException, IllegalArgumentException,
 *                      InvocationTargetException, or NoSuchMethodException
 *//*w w w .  ja  va  2 s.  com*/
public Object lookup(PageContext pageContext, String name, String property, String scope) throws JspException {
    // Look up the requested bean, and return if requested
    Object bean = lookup(pageContext, name, scope);

    if (bean == null) {
        JspException e = null;

        if (scope == null) {
            e = new JspException(messages.getMessage("lookup.bean.any", name));
        } else {
            e = new JspException(messages.getMessage("lookup.bean", name, scope));
        }

        saveException(pageContext, e);
        throw e;
    }

    if (property == null) {
        return bean;
    }

    // Locate and return the specified property
    try {
        return PropertyUtils.getProperty(bean, property);
    } catch (IllegalAccessException e) {
        saveException(pageContext, e);
        throw new JspException(messages.getMessage("lookup.access", property, name));
    } catch (IllegalArgumentException e) {
        saveException(pageContext, e);
        throw new JspException(messages.getMessage("lookup.argument", property, name));
    } catch (InvocationTargetException e) {
        Throwable t = e.getTargetException();

        if (t == null) {
            t = e;
        }

        saveException(pageContext, t);
        throw new JspException(messages.getMessage("lookup.target", property, name));
    } catch (NoSuchMethodException e) {
        saveException(pageContext, e);

        String beanName = name;

        // Name defaults to Contants.BEAN_KEY if no name is specified by
        // an input tag. Thus lookup the bean under the key and use
        // its class name for the exception message.
        if (Constants.BEAN_KEY.equals(name)) {
            Object obj = pageContext.findAttribute(Constants.BEAN_KEY);

            if (obj != null) {
                beanName = obj.getClass().getName();
            }
        }

        throw new JspException(messages.getMessage("lookup.method", property, beanName));
    }
}

---

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

/**
 * Returns the appropriate MessageResources object for the current module
 * and the given bundle./*from w ww  . jav a 2 s .  c o  m*/
 *
 * @param pageContext    Search the context's scopes for the resources.
 * @param bundle         The bundle name to look for.  If this is
 *                       <code>null</code>, the default bundle name is
 *                       used.
 * @param checkPageScope Whether to check page scope
 * @return MessageResources The bundle's resources stored in some scope.
 * @throws JspException if the MessageResources object could not be
 *                      found.
 */
public MessageResources retrieveMessageResources(PageContext pageContext, String bundle, boolean checkPageScope)
        throws JspException {
    MessageResources resources = null;

    if (bundle == null) {
        bundle = Globals.MESSAGES_KEY;
    }

    if (checkPageScope) {
        resources = (MessageResources) pageContext.getAttribute(bundle, PageContext.PAGE_SCOPE);
    }

    if (resources == null) {
        resources = (MessageResources) pageContext.getAttribute(bundle, PageContext.REQUEST_SCOPE);
    }

    if (resources == null) {
        ModuleConfig moduleConfig = getModuleConfig(pageContext);

        resources = (MessageResources) pageContext.getAttribute(bundle + moduleConfig.getPrefix(),
                PageContext.APPLICATION_SCOPE);
    }

    if (resources == null) {
        resources = (MessageResources) pageContext.getAttribute(bundle, PageContext.APPLICATION_SCOPE);
    }

    if (resources == null) {
        JspException e = new JspException(messages.getMessage("message.bundle", bundle));

        saveException(pageContext, e);
        throw e;
    }

    return resources;
}

---

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

/**
 * Process nested ≶putList> tag.
 * Method calls by nested ≶putList> tags.
 * Nested list is added to sub-component attributes
 * If role is defined, it is checked immediately.
 *///from  ww  w  .  j a  va2  s  .co m
public void processNestedTag(PutListTag nestedTag) throws JspException {
    // Check role
    HttpServletRequest request = (HttpServletRequest) pageContext.getRequest();
    String role = nestedTag.getRole();
    if (role != null && !request.isUserInRole(role)) {
        // not allowed : skip attribute
        return;
    }

    // Check if a name is defined
    if (nestedTag.getName() == null) {
        throw new JspException(
                "Error - PutList : attribute name is not defined. It is mandatory as the list is added as attribute of 'insert'.");
    }

    // now add attribute to enclosing parent (i.e. : this object).
    putAttribute(nestedTag.getName(), nestedTag.getList());
}

---

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

/**
 * Get instantiated Controller.//  ww w . j a  va  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.getMessage());
    }
}

---

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

/**
 * Process tag attribute and create corresponding tag handler.
 */// ww  w.j a v a  2  s.c om
public TagHandler createTagHandler() throws JspException {
    // Check each tag attribute.
    // page Url attribute must be the last checked  because it can appears concurrently
    // with others attributes.
    if (definitionName != null) {
        return processDefinitionName(definitionName);
    } else if (attribute != null) {
        return processAttribute(attribute);
    } else if (beanName != null) {
        return processBean(beanName, beanProperty, beanScope);
    } else if (name != null) {
        return processName(name);
    } else if (page != null) {
        return processUrl(page);
    } else {
        throw new JspException(
                "Error - Tag Insert : At least one of the following attribute must be defined : template|page|attribute|definition|name|beanName. Check tag syntax");
    }
}

---

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

/**
 * Process tag attribute "definition"./* w w  w.j  ava 2  s . c o m*/
 * First, search definition in the factory, then create handler from this definition.
 * @param name Name of the definition.
 * @return Appropriate TagHandler.
 * @throws JspException- NoSuchDefinitionException No Definition  found for name.
 * @throws JspException- FactoryNotFoundException Can't find Definitions factory.
 * @throws JspException- DefinedComponentFactoryException General error in factory.
 * @throws JspException InstantiationException Can't create requested controller
 */
protected TagHandler processDefinitionName(String name) throws JspException {

    try {
        ComponentDefinition definition = TilesUtil.getDefinition(name,
                (HttpServletRequest) pageContext.getRequest(), pageContext.getServletContext());

        if (definition == null) { // is it possible ?
            throw new NoSuchDefinitionException();
        }

        return processDefinition(definition);

    } catch (NoSuchDefinitionException ex) {
        throw new JspException("Error -  Tag Insert : Can't get definition '" + definitionName
                + "'. Check if this name exist in definitions factory.");

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

    } catch (DefinitionsFactoryException ex) {
        if (log.isDebugEnabled()) {
            ex.printStackTrace();
        }

        // Save exception to be able to show it later
        pageContext.setAttribute(Globals.EXCEPTION_KEY, ex, PageContext.REQUEST_SCOPE);
        throw new JspException(ex.getMessage());
    }
}

---

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