📄 tagutils.java
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StringBuffer url = new StringBuffer();
HttpServletRequest request = (HttpServletRequest) pageContext.getRequest();
if (forward != null) {
ForwardConfig forwardConfig = moduleConfig.findForwardConfig(forward);
if (forwardConfig == null) {
throw new MalformedURLException(messages.getMessage("computeURL.forward", forward));
}
// **** removed - see bug 37817 ****
// if (forwardConfig.getRedirect()) {
// redirect = true;
// }
if (forwardConfig.getPath().startsWith("/")) {
url.append(request.getContextPath());
url.append(RequestUtils.forwardURL(request, forwardConfig, moduleConfig));
} else {
url.append(forwardConfig.getPath());
}
} else if (href != null) {
url.append(href);
} else if (action != null) {
url.append(instance.getActionMappingURL(action, module, pageContext, false));
} else /* if (page != null) */ {
url.append(request.getContextPath());
url.append(this.pageURL(request, page, moduleConfig));
}
// Add anchor if requested (replacing any existing anchor)
if (anchor != null) {
String temp = url.toString();
int hash = temp.indexOf('#');
if (hash >= 0) {
url.setLength(hash);
}
url.append('#');
url.append(this.encodeURL(anchor, charEncoding));
}
// Add dynamic parameters if requested
if ((params != null) && (params.size() > 0)) {
// Save any existing anchor
String temp = url.toString();
int hash = temp.indexOf('#');
if (hash >= 0) {
anchor = temp.substring(hash + 1);
url.setLength(hash);
temp = url.toString();
} else {
anchor = null;
}
// Define the parameter separator
String separator = null;
if (redirect) {
separator = "&";
} else if (encodeSeparator) {
separator = "&";
} else {
separator = "&";
}
// Add the required request parameters
boolean question = temp.indexOf('?') >= 0;
Iterator keys = params.keySet().iterator();
while (keys.hasNext()) {
String key = (String) keys.next();
Object value = params.get(key);
if (value == null) {
if (!question) {
url.append('?');
question = true;
} else {
url.append(separator);
}
url.append(this.encodeURL(key, charEncoding));
url.append('='); // Interpret null as "no value"
} else if (value instanceof String) {
if (!question) {
url.append('?');
question = true;
} else {
url.append(separator);
}
url.append(this.encodeURL(key, charEncoding));
url.append('=');
url.append(this.encodeURL((String) value, charEncoding));
} else if (value instanceof String[]) {
String values[] = (String[]) value;
for (int i = 0; i < values.length; i++) {
if (!question) {
url.append('?');
question = true;
} else {
url.append(separator);
}
url.append(this.encodeURL(key, charEncoding));
url.append('=');
url.append(this.encodeURL(values[i], charEncoding));
}
} else /* Convert other objects to a string */ {
if (!question) {
url.append('?');
question = true;
} else {
url.append(separator);
}
url.append(this.encodeURL(key, charEncoding));
url.append('=');
url.append(this.encodeURL(value.toString(), charEncoding));
}
}
// Re-add the saved anchor (if any)
if (anchor != null) {
url.append('#');
url.append(this.encodeURL(anchor, charEncoding));
}
}
// Perform URL rewriting to include our session ID (if any)
// but only if url is not an external URL
if (( href == null ) && ( pageContext.getSession() != null )) {
HttpServletResponse response = (HttpServletResponse) pageContext.getResponse();
if (redirect) {
return (response.encodeRedirectURL(url.toString()));
} else {
return (response.encodeURL(url.toString()));
}
} else {
return (url.toString());
}
}
/**
* URLencodes a string assuming the character encoding is UTF-8.
*
* @param url
* @return String The encoded url in UTF-8
*/
public String encodeURL(String url) {
return encodeURL(url, "UTF-8");
}
/**
* Use the new URLEncoder.encode() method from Java 1.4 if available, else
* use the old deprecated version. This method uses reflection to find the
* appropriate method; if the reflection operations throw exceptions, this
* will return the url encoded with the old URLEncoder.encode() method.
* @param enc The character encoding the urlencode is performed on.
* @return String The encoded url.
*/
public String encodeURL(String url, String enc) {
return ResponseUtils.encodeURL(url, enc);
}
/**
* Filter the specified string for characters that are sensitive to
* HTML interpreters, returning the string with these characters replaced
* by the corresponding character entities.
*
* @param value The string to be filtered and returned
*/
public String filter(String value) {
return ResponseUtils.filter(value);
}
/**
* Retrieves the value from request scope and if it isn't already an
* <code>ErrorMessages</code> some classes are converted to one.
*
* @param pageContext The PageContext for the current page
* @param paramName Key for parameter value
* @return ActionErrors from request scope
* @exception JspException
* @deprecated Use getActionMessages() instead. This will be removed
* after Struts 1.2.
*/
public ActionErrors getActionErrors(PageContext pageContext, String paramName)
throws JspException {
ActionErrors errors = new ActionErrors();
Object value = pageContext.findAttribute(paramName);
if (value != null) {
try {
if (value instanceof String) {
errors.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++) {
errors.add(
ActionMessages.GLOBAL_MESSAGE,
new ActionMessage(keys[i]));
}
} else if (value instanceof ActionErrors) {
errors = (ActionErrors) value;
} else {
throw new JspException(
messages.getMessage(
"actionErrors.errors",
value.getClass().getName()));
}
} catch (JspException e) {
throw e;
} catch (Exception e) {
log.debug(e, e);
}
}
return errors;
}
/**
* Return the form action converted into an action mapping path. The
* value of the <code>action</code> property is manipulated as follows in
* computing the name of the requested mapping:
* <ul>
* <li>Any filename extension is removed (on the theory that extension
* mapping is being used to select the controller servlet).</li>
* <li>If the resulting value does not start with a slash, then a
* slash is prepended.</li>
* </ul>
*/
public String getActionMappingName(String action) {
String value = action;
int question = action.indexOf("?");
if (question >= 0) {
value = value.substring(0, question);
}
int slash = value.lastIndexOf("/");
int period = value.lastIndexOf(".");
if ((period >= 0) && (period > slash)) {
value = value.substring(0, period);
}
return value.startsWith("/") ? value : ("/" + value);
}
/**
* Return the form action converted into a server-relative URL.
*/
public String getActionMappingURL(String action, PageContext pageContext) {
return getActionMappingURL(action,null,pageContext,false);
}
/**
* Return the form action converted into a server-relative URL.
*/
public String getActionMappingURL(String action, String module, PageContext pageContext, boolean contextRelative) {
HttpServletRequest request = (HttpServletRequest) pageContext.getRequest();
String contextPath = request.getContextPath();
StringBuffer value = new StringBuffer();
// Avoid setting two slashes at the beginning of an action:
// the length of contextPath should be more than 1
// in case of non-root context, otherwise length==1 (the slash)
if (contextPath.length() > 1) value.append(contextPath);
ModuleConfig moduleConfig = ModuleUtils.getInstance().getModuleConfig(module, request, pageContext.getServletContext());
if ((moduleConfig != null) && (!contextRelative)) {
value.append(moduleConfig.getPrefix());
}
// Use our servlet mapping, if one is specified
String servletMapping =
(String) pageContext.getAttribute(
Globals.SERVLET_KEY,
PageContext.APPLICATION_SCOPE);
if (servletMapping != null) {
String queryString = null;
int question = action.indexOf("?");
if (question >= 0) {
queryString = action.substring(question);
}
String actionMapping = getActionMappingName(action);
if (servletMapping.startsWith("*.")) {
value.append(actionMapping);
value.append(servletMapping.substring(1));
} else if (servletMapping.endsWith("/*")) {
value.append(
servletMapping.substring(0, servletMapping.length() - 2));
value.append(actionMapping);
} else if (servletMapping.equals("/")) {
value.append(actionMapping);
}
if (queryString != null) {
value.append(queryString);
}
}
// Otherwise, assume extension mapping is in use and extension is
// already included in the action property
else {
if (!action.startsWith("/")) {
value.append("/");
}
value.append(action);
}
return value.toString();
}
/**
* 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
*/
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;
}
/**
* Return the ModuleConfig object if it exists, null if otherwise.
* @param pageContext The page context.
* @return the ModuleConfig object
*/
public ModuleConfig getModuleConfig(PageContext pageContext) {
return getModuleConfig(
null,
pageContext);
}
/**
* Return the ModuleConfig object for the given prefix if it exists, null if otherwise.
* @param module The module prefix
* @param pageContext The page context.
* @return the ModuleConfig object
*/
public ModuleConfig getModuleConfig(String module, PageContext pageContext) {
return ModuleUtils.getInstance().getModuleConfig(
module,
(HttpServletRequest) pageContext.getRequest(),
pageContext.getServletContext());
}
/**
* Converts the scope name into its corresponding PageContext constant value.
* @param scopeName Can be "page", "request", "session", or "application" in any
* case.
* @return The constant representing the scope (ie. PageContext.REQUEST_SCOPE).
* @throws JspException if the scopeName is not a valid name.
*/
public int getScope(String scopeName) throws JspException {
Integer scope = (Integer) scopes.get(scopeName.toLowerCase());
if (scope == null) {
throw new JspException(messages.getMessage("lookup.scope", scope));
}
return scope.intValue();
}
/**
* Look up and return current user locale, based on the specified parameters.
*
* @param pageContext The PageContext associated with this request
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