org.apache.struts2.dispatcher: public class: StrutsRequestWrapper

org.apache.struts2.dispatcher
public class: StrutsRequestWrapper [javadoc | source]

java.lang.Object
   javax.servlet.ServletRequestWrapper
      javax.servlet.http.HttpServletRequestWrapper
         org.apache.struts2.dispatcher.StrutsRequestWrapper

All Implemented Interfaces:
HttpServletRequest, ServletRequest

Direct Known Subclasses:
MultiPartRequestWrapper

All Struts requests are wrapped with this class, which provides simple JSTL accessibility. This is because JSTL works with request attributes, so this class delegates to the value stack except for a few cases where required to prevent infinite loops. Namely, we don't let any attribute name with "#" in it delegate out to the value stack, as it could potentially cause an infinite loop. For example, an infinite loop would take place if you called: request.getAttribute("#attr.foo").

Constructor:

Constructor:
public StrutsRequestWrapper(HttpServletRequest req) { super(req); } The constructor Parameters: `req` - The request

 public StrutsRequestWrapper(HttpServletRequest req) {
        super(req);
}

The constructor

Parameters:

req - The request

Method from org.apache.struts2.dispatcher.StrutsRequestWrapper Summary:
getAttribute

Methods from javax.servlet.http.HttpServletRequestWrapper:
getAuthType, getContextPath, getCookies, getDateHeader, getHeader, getHeaderNames, getHeaders, getIntHeader, getMethod, getPathInfo, getPathTranslated, getQueryString, getRemoteUser, getRequestURI, getRequestURL, getRequestedSessionId, getServletPath, getSession, getSession, getUserPrincipal, isRequestedSessionIdFromCookie, isRequestedSessionIdFromURL, isRequestedSessionIdFromUrl, isRequestedSessionIdValid, isUserInRole

Methods from javax.servlet.http.HttpServletRequestWrapper:

getAuthType, getContextPath, getCookies, getDateHeader, getHeader, getHeaderNames, getHeaders, getIntHeader, getMethod, getPathInfo, getPathTranslated, getQueryString, getRemoteUser, getRequestURI, getRequestURL, getRequestedSessionId, getServletPath, getSession, getSession, getUserPrincipal, isRequestedSessionIdFromCookie, isRequestedSessionIdFromURL, isRequestedSessionIdFromUrl, isRequestedSessionIdValid, isUserInRole

Methods from javax.servlet.ServletRequestWrapper:
getAttribute, getAttributeNames, getCharacterEncoding, getContentLength, getContentType, getInputStream, getLocalAddr, getLocalName, getLocalPort, getLocale, getLocales, getParameter, getParameterMap, getParameterNames, getParameterValues, getProtocol, getReader, getRealPath, getRemoteAddr, getRemoteHost, getRemotePort, getRequest, getRequestDispatcher, getScheme, getServerName, getServerPort, isSecure, removeAttribute, setAttribute, setCharacterEncoding, setRequest

Methods from javax.servlet.ServletRequestWrapper:

getAttribute, getAttributeNames, getCharacterEncoding, getContentLength, getContentType, getInputStream, getLocalAddr, getLocalName, getLocalPort, getLocale, getLocales, getParameter, getParameterMap, getParameterNames, getParameterValues, getProtocol, getReader, getRealPath, getRemoteAddr, getRemoteHost, getRemotePort, getRequest, getRequestDispatcher, getScheme, getServerName, getServerPort, isSecure, removeAttribute, setAttribute, setCharacterEncoding, setRequest

Methods from java.lang.Object:
equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Method from org.apache.struts2.dispatcher.StrutsRequestWrapper Detail:
public Object getAttribute(String s) { if (s != null && s.startsWith("javax.servlet")) { // don't bother with the standard javax.servlet attributes, we can short-circuit this // see WW-953 and the forums post linked in that issue for more info return super.getAttribute(s); } ActionContext ctx = ActionContext.getContext(); Object attribute = super.getAttribute(s); boolean alreadyIn = false; Boolean b = (Boolean) ctx.get("__requestWrapper.getAttribute"); if (b != null) { alreadyIn = b.booleanValue(); } // note: we don't let # come through or else a request for // #attr.foo or #request.foo could cause an endless loop if (!alreadyIn && attribute == null && s.indexOf("#") == -1) { try { // If not found, then try the ValueStack ctx.put("__requestWrapper.getAttribute", Boolean.TRUE); ValueStack stack = ctx.getValueStack(); if (stack != null) { attribute = stack.findValue(s); } } finally { ctx.put("__requestWrapper.getAttribute", Boolean.FALSE); } } return attribute; } Gets the object, looking in the value stack if not found

Method from org.apache.struts2.dispatcher.StrutsRequestWrapper Detail:

 public Object getAttribute(String s) {
        if (s != null && s.startsWith("javax.servlet")) {
            // don't bother with the standard javax.servlet attributes, we can short-circuit this
            // see WW-953 and the forums post linked in that issue for more info
            return super.getAttribute(s);
        }
        ActionContext ctx = ActionContext.getContext();
        Object attribute = super.getAttribute(s);
        boolean alreadyIn = false;
        Boolean b = (Boolean) ctx.get("__requestWrapper.getAttribute");
        if (b != null) {
            alreadyIn = b.booleanValue();
        }
        // note: we don't let # come through or else a request for
        // #attr.foo or #request.foo could cause an endless loop
        if (!alreadyIn && attribute == null && s.indexOf("#") == -1) {
            try {
                // If not found, then try the ValueStack
                ctx.put("__requestWrapper.getAttribute", Boolean.TRUE);
                ValueStack stack = ctx.getValueStack();
                if (stack != null) {
                    attribute = stack.findValue(s);
                }
            } finally {
                ctx.put("__requestWrapper.getAttribute", Boolean.FALSE);
            }
        }
        return attribute;
}

Gets the object, looking in the value stack if not found