ImplicitObjectELResolver.java 文件源码

/**
 *
 * Creates the Map that maps header name to single header
 * value.
 **/
public static Map<String, String> createHeaderMap (PageContext pContext)
{
  final HttpServletRequest request =
    (HttpServletRequest) pContext.getRequest ();
  return new EnumeratedMap<String, String> ()
    {
      public Enumeration<String> enumerateKeys () 
      {
        return request.getHeaderNames ();
      }

      public String getValue (Object pKey) 
      {
        if (pKey instanceof String) {
          return request.getHeader ((String) pKey);
        }
        else {
          return null;
        }
      }

      public boolean isMutable ()
      {
        return false;
      }
    };
}