java.lang.Object
- org.springframework.messaging.support.MessageHeaderAccessor
- - org.springframework.messaging.support.NativeMessageHeaderAccessor

直接已知子类:
JmsMessageHeaderAccessor, SimpMessageHeaderAccessor
```
public class NativeMessageHeaderAccessor
extends MessageHeaderAccessor
```
An extension of MessageHeaderAccessor that also stores and provides read/write access to message headers from an external source -- e.g. a Spring Message created to represent a STOMP message received from a STOMP client or message broker. Native message headers are kept in a Map<String, List<String>> under the key NATIVE_HEADERS.
This class is not intended for direct use but is rather expected to be used indirectly through protocol-specific sub-classes such as StompHeaderAccessor. Such sub-classes may provide factory methods to translate message headers from an external messaging source (e.g. STOMP) to Spring Message headers and reversely to translate Spring Message headers to a message to send to an external source.
从以下版本开始:
4.0
作者:
Rossen Stoyanchev

字段概要
字段
修饰符和类型字段说明
static String NATIVE_HEADERS
- 从类继承的字段 org.springframework.messaging.support.MessageHeaderAccessor
  DEFAULT_CHARSET

构造器概要

构造器
限定符	构造器	说明
`protected`	`NativeMessageHeaderAccessor()`	Protected constructor to create a new instance.
`protected`	`NativeMessageHeaderAccessor(Map<String,List<String>> nativeHeaders)`	Protected constructor to create an instance with the given native headers.
`protected`	`NativeMessageHeaderAccessor(Message<?> message)`	Protected constructor that copies headers from another message.

方法概要

所有方法静态方法实例方法具体方法
修饰符和类型	方法	说明
`void`	`addNativeHeader(String name, String value)`	Add the specified native header value to existing values.
`void`	`addNativeHeaders(MultiValueMap<String,String> headers)`	Add the specified native headers to existing values.
`boolean`	`containsNativeHeader(String headerName)`	Whether the native header map contains the give header name.
`String`	`getFirstNativeHeader(String headerName)`	Return the first value for the specified native header, if present.
`static String`	`getFirstNativeHeader(String headerName, Map<String,Object> headers)`	Return the first value for the specified native header, or `null` if none.
`List<String>`	`getNativeHeader(String headerName)`	Return all values for the specified native header, if present.
`List<String>`	`removeNativeHeader(String headerName)`	Remove the specified native header value replacing existing values.
`void`	`setImmutable()`	By default when `MessageHeaderAccessor.getMessageHeaders()` is called, `"this"MessageHeaderAccessor` instance can no longer be used to modify the underlying message headers.
`void`	`setNativeHeader(String name, String value)`	Set the specified native header value replacing existing values.
`Map<String,List<String>>`	`toNativeHeaderMap()`	Return a copy of the native headers sub-map, or an empty map.

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

- 字段详细资料
  - NATIVE_HEADERS
```
public static final String NATIVE_HEADERS
```
    另请参阅:
    常量字段值
- 构造器详细资料
  - NativeMessageHeaderAccessor
```
protected NativeMessageHeaderAccessor()
```
    Protected constructor to create a new instance.
  - NativeMessageHeaderAccessor
```
protected NativeMessageHeaderAccessor(Map<String,List<String>> nativeHeaders)
```
    Protected constructor to create an instance with the given native headers.
    参数:
    nativeHeaders - native headers to create the message with (may be null)
  - NativeMessageHeaderAccessor
```
protected NativeMessageHeaderAccessor(Message<?> message)
```
    Protected constructor that copies headers from another message.
- 方法详细资料
  - toNativeHeaderMap
```
public Map<String,List<String>> toNativeHeaderMap()
```
    Return a copy of the native headers sub-map, or an empty map.
  - setImmutable
```
public void setImmutable()
```
    从类复制的说明: MessageHeaderAccessor
    By default when MessageHeaderAccessor.getMessageHeaders() is called, "this"MessageHeaderAccessor instance can no longer be used to modify the underlying message headers. However if MessageHeaderAccessor.setLeaveMutable(boolean) is used, this method is necessary to indicate explicitly when the MessageHeaders instance should no longer be modified.
    覆盖:
    setImmutable 在类中 MessageHeaderAccessor
  - containsNativeHeader
```
public boolean containsNativeHeader(String headerName)
```
    Whether the native header map contains the give header name.
    参数:
    headerName - the name of the header
  - getNativeHeader
```
public List<String> getNativeHeader(String headerName)
```
    Return all values for the specified native header, if present.
    参数:
    headerName - the name of the header
    返回:
    the associated values, or null if none
  - getFirstNativeHeader
```
public String getFirstNativeHeader(String headerName)
```
    Return the first value for the specified native header, if present.
    参数:
    headerName - the name of the header
    返回:
    the associated value, or null if none
  - setNativeHeader
```
public void setNativeHeader(String name,
                            String value)
```
    Set the specified native header value replacing existing values.
    In order for this to work, the accessor must be mutable. See MessageHeaderAccessor for details.
  - addNativeHeader
```
public void addNativeHeader(String name,
                            String value)
```
    Add the specified native header value to existing values.
    In order for this to work, the accessor must be mutable. See MessageHeaderAccessor for details.
    参数:
    name - the name of the header
    value - the header value to set
  - addNativeHeaders
```
public void addNativeHeaders(MultiValueMap<String,String> headers)
```
    Add the specified native headers to existing values.
    参数:
    headers - the headers to set
  - removeNativeHeader
```
public List<String> removeNativeHeader(String headerName)
```
    Remove the specified native header value replacing existing values.
    In order for this to work, the accessor must be mutable. See MessageHeaderAccessor for details.
    参数:
    headerName - the name of the header
    返回:
    the associated values, or null if the header was not present
  - getFirstNativeHeader
```
public static String getFirstNativeHeader(String headerName,
                                          Map<String,Object> headers)
```
    Return the first value for the specified native header, or null if none.
    参数:
    headerName - the name of the header
    headers - the headers map to introspect
    返回:
    the associated value, or null if none

类 NativeMessageHeaderAccessor

字段概要

从类继承的字段 org.springframework.messaging.support.MessageHeaderAccessor

构造器概要

方法概要

从类继承的方法 org.springframework.messaging.support.MessageHeaderAccessor

从类继承的方法 java.lang.Object

字段详细资料

NATIVE_HEADERS

构造器详细资料

NativeMessageHeaderAccessor

NativeMessageHeaderAccessor

NativeMessageHeaderAccessor

方法详细资料

toNativeHeaderMap

setImmutable

containsNativeHeader

getNativeHeader

getFirstNativeHeader

setNativeHeader

addNativeHeader

addNativeHeaders

removeNativeHeader

getFirstNativeHeader