详解Spring Controller autowired Request变量

public final object invokeforrequest(nativewebrequest request, modelandviewcontainer mavcontainer,
   object... providedargs) throws exception {
 
  object[] args = getmethodargumentvalues(request, mavcontainer, providedargs);
  if (logger.istraceenabled()) {
   stringbuilder sb = new stringbuilder("invoking [");
   sb.append(getbeantype().getsimplename()).append(".");
   sb.append(getmethod().getname()).append("] method with arguments ");
   sb.append(arrays.aslist(args));
   logger.trace(sb.tostring());
  }
  object returnvalue = invoke(args);
  if (logger.istraceenabled()) {
   logger.trace("method [" + getmethod().getname() + "] returned [" + returnvalue + "]");
  }
  return returnvalue;
}

/**
 * register web-specific scopes ("request", "session", "globalsession", "application")
 * with the given beanfactory, as used by the webapplicationcontext.
 * @param beanfactory the beanfactory to configure
 * @param sc the servletcontext that we're running within
 */
public static void registerwebapplicationscopes(configurablelistablebeanfactory beanfactory, servletcontext sc) {
  beanfactory.registerscope(webapplicationcontext.scope_request, new requestscope());
  beanfactory.registerscope(webapplicationcontext.scope_session, new sessionscope(false));
  beanfactory.registerscope(webapplicationcontext.scope_global_session, new sessionscope(true));
  if (sc != null) {
   servletcontextscope appscope = new servletcontextscope(sc);
   beanfactory.registerscope(webapplicationcontext.scope_application, appscope);
   // register as servletcontext attribute, for contextcleanuplistener to detect it.
   sc.setattribute(servletcontextscope.class.getname(), appscope);
  }
 
  beanfactory.registerresolvabledependency(servletrequest.class, new requestobjectfactory());
  beanfactory.registerresolvabledependency(httpsession.class, new sessionobjectfactory());
  beanfactory.registerresolvabledependency(webrequest.class, new webrequestobjectfactory());
  if (jsfpresent) {
   facesdependencyregistrar.registerfacesdependencies(beanfactory);
  }
}


 

 

 /**
 * factory that exposes the current request object on demand.
 */
 @suppresswarnings("serial")
 private static class requestobjectfactory implements objectfactory<servletrequest>, serializable {

 public servletrequest getobject() {
  return currentrequestattributes().getrequest();
 }

 @override
 public string tostring() {
  return "current httpservletrequest";
 }
 }