## org.apache.http.message
Class AbstractHttpMessage

    java.lang.Object
      org.apache.http.message.AbstractHttpMessage

All Implemented Interfaces:
  HttpMessage

Direct Known Subclasses:
  BasicHttpRequest, BasicHttpResponse

    @NotThreadSafe
    public abstract class AbstractHttpMessage

extends Object
implements HttpMessage

Basic implementation of `HttpMessage`.

Since:
  4.0

Field Summary
`protected HeaderGroup` `headergroup`
`protected HttpParams` `params`

Constructor Summary
`protected` `AbstractHttpMessage()`
`protected` `AbstractHttpMessage(HttpParams params)`

Method Summary
`void` `addHeader(Header header)` Adds a header to this message.
`void` `addHeader(String name, String value)` Adds a header to this message.
`boolean` `containsHeader(String name)` Checks if a certain header is present in this message.
`Header[]` `getAllHeaders()` Returns all the headers of this message.
`Header` `getFirstHeader(String name)` Returns the first header with a specified name of this message.
`Header[]` `getHeaders(String name)` Returns all the headers with a specified name of this message.
`Header` `getLastHeader(String name)` Returns the last header with a specified name of this message.
`HttpParams` `getParams()` Returns the parameters effective for this message as set by `HttpMessage.setParams(HttpParams)`.
`HeaderIterator` `headerIterator()` Returns an iterator of all the headers.
`HeaderIterator` `headerIterator(String name)` Returns an iterator of the headers with a given name.
`void` `removeHeader(Header header)` Removes a header from this message.
`void` `removeHeaders(String name)` Removes all headers with a certain name from this message.
`void` `setHeader(Header header)` Overwrites the first header with the same name.
`void` `setHeader(String name, String value)` Overwrites the first header with the same name.
`void` `setHeaders(Header[] headers)` Overwrites all the headers in the message.
`void` `setParams(HttpParams params)` Provides parameters to be used for the processing of this message.

Methods inherited from class java.lang.Object
`clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait`

Methods inherited from interface org.apache.http.HttpMessage
`getProtocolVersion`

Field Detail

### headergroup

    protected HeaderGroup headergroup

### params

    protected HttpParams params

Constructor Detail

### AbstractHttpMessage

    protected AbstractHttpMessage(HttpParams params)

### AbstractHttpMessage

    protected AbstractHttpMessage()

Method Detail

### containsHeader

    public boolean containsHeader(String name)

  Description copied from interface: `HttpMessage`
  Checks if a certain header is present in this message. Header values are ignored.

  Specified by:
    `containsHeader` in interface `HttpMessage`
  Parameters:
    `name` - the header name to check for.
  Returns:
    true if at least one header with this name is present.

### getHeaders

    public Header[] getHeaders(String name)

  Description copied from interface: `HttpMessage`
  Returns all the headers with a specified name of this message. Header values are ignored. Headers are orderd in the sequence they will be sent over a connection.

  Specified by:
    `getHeaders` in interface `HttpMessage`
  Parameters:
    `name` - the name of the headers to return.
  Returns:
    the headers whose name property equals `name`.

### getFirstHeader

    public Header getFirstHeader(String name)

  Description copied from interface: `HttpMessage`
  Returns the first header with a specified name of this message. Header values are ignored. If there is more than one matching header in the message the first element of `HttpMessage.getHeaders(String)` is returned. If there is no matching header in the message `null` is returned.

  Specified by:
    `getFirstHeader` in interface `HttpMessage`
  Parameters:
    `name` - the name of the header to return.
  Returns:
    the first header whose name property equals `name` or `null` if no such header could be found.

### getLastHeader

    public Header getLastHeader(String name)

  Description copied from interface: `HttpMessage`
  Returns the last header with a specified name of this message. Header values are ignored. If there is more than one matching header in the message the last element of `HttpMessage.getHeaders(String)` is returned. If there is no matching header in the message `null` is returned.

  Specified by:
    `getLastHeader` in interface `HttpMessage`
  Parameters:
    `name` - the name of the header to return.
  Returns:
    the last header whose name property equals `name`. or `null` if no such header could be found.

### getAllHeaders

    public Header[] getAllHeaders()

  Description copied from interface: `HttpMessage`
  Returns all the headers of this message. Headers are orderd in the sequence they will be sent over a connection.

  Specified by:
    `getAllHeaders` in interface `HttpMessage`
  Returns:
    all the headers of this message

### addHeader

    public void addHeader(Header header)

  Description copied from interface: `HttpMessage`
  Adds a header to this message. The header will be appended to the end of the list.

  Specified by:
    `addHeader` in interface `HttpMessage`
  Parameters:
    `header` - the header to append.

### addHeader

    public void addHeader(String name,
                          String value)

  Description copied from interface: `HttpMessage`
  Adds a header to this message. The header will be appended to the end of the list.

  Specified by:
    `addHeader` in interface `HttpMessage`
  Parameters:
    `name` - the name of the header.
    `value` - the value of the header.

### setHeader

    public void setHeader(Header header)

  Description copied from interface: `HttpMessage`
  Overwrites the first header with the same name. The new header will be appended to the end of the list, if no header with the given name can be found.

  Specified by:
    `setHeader` in interface `HttpMessage`
  Parameters:
    `header` - the header to set.

### setHeader

    public void setHeader(String name,
                          String value)

  Description copied from interface: `HttpMessage`
  Overwrites the first header with the same name. The new header will be appended to the end of the list, if no header with the given name can be found.

  Specified by:
    `setHeader` in interface `HttpMessage`
  Parameters:
    `name` - the name of the header.
    `value` - the value of the header.

### setHeaders

    public void setHeaders(Header[] headers)

  Description copied from interface: `HttpMessage`
  Overwrites all the headers in the message.

  Specified by:
    `setHeaders` in interface `HttpMessage`
  Parameters:
    `headers` - the array of headers to set.

### removeHeader

    public void removeHeader(Header header)

  Description copied from interface: `HttpMessage`
  Removes a header from this message.

  Specified by:
    `removeHeader` in interface `HttpMessage`
  Parameters:
    `header` - the header to remove.

### removeHeaders

    public void removeHeaders(String name)

  Description copied from interface: `HttpMessage`
  Removes all headers with a certain name from this message.

  Specified by:
    `removeHeaders` in interface `HttpMessage`
  Parameters:
    `name` - The name of the headers to remove.

### headerIterator

    public HeaderIterator headerIterator()

  Description copied from interface: `HttpMessage`
  Returns an iterator of all the headers.

  Specified by:
    `headerIterator` in interface `HttpMessage`
  Returns:
    Iterator that returns Header objects in the sequence they are sent over a connection.

### headerIterator

    public HeaderIterator headerIterator(String name)

  Description copied from interface: `HttpMessage`
  Returns an iterator of the headers with a given name.

  Specified by:
    `headerIterator` in interface `HttpMessage`
  Parameters:
    `name` - the name of the headers over which to iterate, or `null` for all headers
  Returns:
    Iterator that returns Header objects with the argument name in the sequence they are sent over a connection.

### getParams

    public HttpParams getParams()

  Description copied from interface: `HttpMessage`
  Returns the parameters effective for this message as set by `HttpMessage.setParams(HttpParams)`.

  Specified by:
    `getParams` in interface `HttpMessage`

### setParams

    public void setParams(HttpParams params)

  Description copied from interface: `HttpMessage`
  Provides parameters to be used for the processing of this message.

  Specified by:
    `setParams` in interface `HttpMessage`
  Parameters:
    `params` - the parameters

Copyright © 2005-2013 The Apache Software Foundation. All Rights Reserved.