HeaderGroup (aliyun-http-apache 0.2.0-beta API)

java.lang.Object
- org.apache.hc.core5.http.message.HeaderGroup

所有已实现的接口:

Serializable, MessageHeaders

直接已知子类:

BasicHttpRequest, BasicHttpResponse
```
public class HeaderGroup
extends Object
implements MessageHeaders, Serializable
```
A class for combining a set of headers. This class allows for multiple headers with the same name and keeps track of the order in which headers were added.

从以下版本开始:

4.0

另请参阅:

序列化表格

构造器概要

构造器
构造器和说明

HeaderGroup()
Constructor for HeaderGroup.

构造器
构造器和说明
`HeaderGroup()` Constructor for HeaderGroup.

方法概要

所有方法实例方法具体方法
限定符和类型	方法和说明
`void`	`addHeader(Header header)` Adds the given header to the group.
`void`	`clear()` Removes all headers.
`boolean`	`containsHeader(String name)` Tests if headers with the given name are contained within this group.
`int`	`countHeaders(String name)` Checks if a certain header is present in this message and how many times.
`Header`	`getCondensedHeader(String name)` Gets a header representing all of the header values with the given name.
`Header`	`getFirstHeader(String name)` Gets the first header with the given name.
`Header`	`getHeader(String name)` Gets single first header with the given name.
`Header[]`	`getHeaders()` Gets all of the headers contained within this group.
`Header[]`	`getHeaders(String name)` Gets all of the headers with the given name.
`Header`	`getLastHeader(String name)` Gets the last header with the given name.
`Iterator<Header>`	`headerIterator()` Returns an iterator over this group of headers.
`Iterator<Header>`	`headerIterator(String name)` Returns an iterator over the headers with a given name in this group.
`boolean`	`removeHeader(Header header)` Removes the first given header.
`boolean`	`removeHeaders(Header header)` Removes all headers that match the given header.
`boolean`	`removeHeaders(String name)` Removes all headers with a given name in this group.
`void`	`setHeader(Header header)` Replaces the first occurrence of the header with the same name.
`void`	`setHeaders(Header... headers)` Sets all of the headers contained within this group overriding any existing headers.
`String`	`toString()`

从类继承的方法 java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

- 构造器详细资料
  - HeaderGroup
```
public HeaderGroup()
```
    Constructor for HeaderGroup.
- 方法详细资料
  - clear
```
public void clear()
```
    Removes all headers.
  - addHeader
```
public void addHeader(Header header)
```
    Adds the given header to the group. The order in which this header was added is preserved.
    
    参数:
    
    header - the header to add
  - removeHeader
```
public boolean removeHeader(Header header)
```
    Removes the first given header.
    
    参数:
    
    header - the header to remove
    
    返回:
    
    true if a header was removed as a result of this call.
  - removeHeaders
```
public boolean removeHeaders(Header header)
```
    Removes all headers that match the given header.
    
    参数:
    
    header - the header to remove
    
    返回:
    
    true if any header was removed as a result of this call.
    
    从以下版本开始:
    
    5.0
  - setHeader
```
public void setHeader(Header header)
```
    Replaces the first occurrence of the header with the same name. If no header with the same name is found the given header is added to the end of the list.
    
    参数:
    
    header - the new header that should replace the first header with the same name if present in the list.
    
    从以下版本开始:
    
    5.0
  - setHeaders
```
public void setHeaders(Header... headers)
```
    Sets all of the headers contained within this group overriding any existing headers. The headers are added in the order in which they appear in the array.
    
    参数:
    
    headers - the headers to set
  - getCondensedHeader
```
public Header getCondensedHeader(String name)
```
    Gets a header representing all of the header values with the given name. If more that one header with the given name exists the values will be combined with a ",".
    Header name comparison is case insensitive.
    
    参数:
    
    name - the name of the header(s) to get
    
    返回:
    
    a header with a condensed value or null if no headers by the given name are present
  - getHeaders
```
public Header[] getHeaders(String name)
```
    Gets all of the headers with the given name. The returned array maintains the relative order in which the headers were added.
    Header name comparison is case insensitive.
    
    指定者:
    
    getHeaders 在接口中 MessageHeaders
    
    参数:
    
    name - the name of the header(s) to get
    
    返回:
    
    an array of length ≥ 0
  - getFirstHeader
```
public Header getFirstHeader(String name)
```
    Gets the first header with the given name.
    Header name comparison is case insensitive.
    
    指定者:
    
    getFirstHeader 在接口中 MessageHeaders
    
    参数:
    
    name - the name of the header to get
    
    返回:
    
    the first header or null
  - getHeader
```
public Header getHeader(String name)
                 throws ProtocolException
```
    Gets single first header with the given name.
    Header name comparison is case insensitive.
    
    指定者:
    
    getHeader 在接口中 MessageHeaders
    
    参数:
    
    name - the name of the header to get
    
    返回:
    
    the first header or null
    
    抛出:
    
    ProtocolException - in case multiple headers with the given name are found.
  - getLastHeader
```
public Header getLastHeader(String name)
```
    Gets the last header with the given name.
    Header name comparison is case insensitive.
    
    指定者:
    
    getLastHeader 在接口中 MessageHeaders
    
    参数:
    
    name - the name of the header to get
    
    返回:
    
    the last header or null
  - getHeaders
```
public Header[] getHeaders()
```
    Gets all of the headers contained within this group.
    
    指定者:
    
    getHeaders 在接口中 MessageHeaders
    
    返回:
    
    an array of length ≥ 0
  - containsHeader
```
public boolean containsHeader(String name)
```
    Tests if headers with the given name are contained within this group.
    Header name comparison is case insensitive.
    
    指定者:
    
    containsHeader 在接口中 MessageHeaders
    
    参数:
    
    name - the header name to test for
    
    返回:
    
    true if at least one header with the name is contained, false otherwise
  - countHeaders
```
public int countHeaders(String name)
```
    Checks if a certain header is present in this message and how many times.
    Header name comparison is case insensitive.
    
    指定者:
    
    countHeaders 在接口中 MessageHeaders
    
    参数:
    
    name - the header name to check for.
    
    返回:
    
    number of occurrences of the header in the message.
  - headerIterator
```
public Iterator<Header> headerIterator()
```
    Returns an iterator over this group of headers.
    
    指定者:
    
    headerIterator 在接口中 MessageHeaders
    
    返回:
    
    iterator over this group of headers.
    
    从以下版本开始:
    
    5.0
  - headerIterator
```
public Iterator<Header> headerIterator(String name)
```
    Returns an iterator over the headers with a given name in this group.
    
    指定者:
    
    headerIterator 在接口中 MessageHeaders
    
    参数:
    
    name - the name of the headers over which to iterate, or null for all headers
    
    返回:
    
    iterator over some headers in this group.
    
    从以下版本开始:
    
    5.0
  - removeHeaders
```
public boolean removeHeaders(String name)
```
    Removes all headers with a given name in this group.
    
    参数:
    
    name - the name of the headers to be removed.
    
    返回:
    
    true if any header was removed as a result of this call.
    
    从以下版本开始:
    
    5.0
  - toString
```
public String toString()
```
    覆盖:
    
    toString 在类中 Object

类 HeaderGroup

构造器概要

方法概要

从类继承的方法 java.lang.Object

构造器详细资料

HeaderGroup

方法详细资料

clear

addHeader

removeHeader

removeHeaders

setHeader

setHeaders

getCondensedHeader

getHeaders

getFirstHeader

getHeader

getLastHeader

getHeaders

containsHeader

countHeaders

headerIterator

headerIterator

removeHeaders

toString