Package io.netty.handler.codec

Class HeadersUtils

  • public final class HeadersUtils
extends java.lang.Object
    Provides utility methods related to Headers.

    • Method Summary

      All Methods Static Methods Concrete Methods 
      Modifier and Type Method Description
      static <K,​V>
      java.util.List<java.lang.String>      		 getAllAsString​(Headers<K,​V,​?> headers, K name)
      Headers.get(Object) and convert each element of List to a String.
      static <K,​V>
      java.lang.String      		 getAsString​(Headers<K,​V,​?> headers, K name)
      Headers.get(Object) and convert the result to a String.
      static java.util.Iterator<java.util.Map.Entry<java.lang.String,​java.lang.String>> iteratorAsString​(java.lang.Iterable<java.util.Map.Entry<java.lang.CharSequence,​java.lang.CharSequence>> headers)
      Headers.iterator() which converts each Map.Entry's key and value to a String.
      static java.util.Set<java.lang.String> namesAsString​(Headers<java.lang.CharSequence,​java.lang.CharSequence,​?> headers)
      Headers.names() and convert each element of Set to a String.
      static <K,​V>
      java.lang.String      		 toString​(java.lang.Class<?> headersClass, java.util.Iterator<java.util.Map.Entry<K,​V>> headersIt, int size)
      Helper for implementing toString for DefaultHeaders and wrappers such as DefaultHttpHeaders.

      • Methods inherited from class java.lang.Object

        clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

    • Method Detail

      • getAllAsString

        public static <K,​V> java.util.List<java.lang.String> getAllAsString​(Headers<K,​V,​?> headers,
                                                                          K name)
        Headers.get(Object) and convert each element of List to a String.
        Parameters:
        name - the name of the header to retrieve
        Returns:
        a List of header values or an empty List if no values are found.

      • getAsString

        public static <K,​V> java.lang.String getAsString​(Headers<K,​V,​?> headers,
                                                       K name)
        Headers.get(Object) and convert the result to a String.
        Parameters:
        headers - the headers to get the name from
        name - the name of the header to retrieve
        Returns:
        the first header value if the header is found. null if there's no such entry.

      • iteratorAsString

        public static java.util.Iterator<java.util.Map.Entry<java.lang.String,​java.lang.String>> iteratorAsString​(java.lang.Iterable<java.util.Map.Entry<java.lang.CharSequence,​java.lang.CharSequence>> headers)
        Headers.iterator() which converts each Map.Entry's key and value to a String.

      • toString

        public static <K,​V> java.lang.String toString​(java.lang.Class<?> headersClass,
                                                    java.util.Iterator<java.util.Map.Entry<K,​V>> headersIt,
                                                    int size)
        Helper for implementing toString for DefaultHeaders and wrappers such as DefaultHttpHeaders.
        Parameters:
        headersClass - the class of headers
        headersIt - the iterator on the actual headers
        size - the size of the iterator
        Returns:
        a String representation of the headers

      • namesAsString

        public static java.util.Set<java.lang.String> namesAsString​(Headers<java.lang.CharSequence,​java.lang.CharSequence,​?> headers)
        Headers.names() and convert each element of Set to a String.
        Parameters:
        headers - the headers to get the names from
        Returns:
        a Set of header values or an empty Set if no values are found.