程序包 cn.taketoday.web.handler.condition

类 HeadersRequestCondition

java.lang.Object

cn.taketoday.web.handler.condition.AbstractRequestCondition<HeadersRequestCondition>

cn.taketoday.web.handler.condition.HeadersRequestCondition

所有已实现的接口:

RequestCondition<HeadersRequestCondition>

public final class HeadersRequestCondition
extends AbstractRequestCondition<HeadersRequestCondition>

A logical conjunction (' && ') request condition that matches a request against a set of header expressions with syntax defined in RequestMapping.headers().

Expressions passed to the constructor with header names 'Accept' or 'Content-Type' are ignored. See ConsumesRequestCondition and ProducesRequestCondition for those.

从以下版本开始:

4.0

作者:

Arjen Poutsma, Rossen Stoyanchev

嵌套类概要

嵌套类

修饰符和类型	类	说明
(专用程序包) static class	HeadersRequestCondition.HeaderExpression	Parses and matches a single header expression to a request.

字段概要

字段

修饰符和类型	字段	说明
private final Set<HeadersRequestCondition.HeaderExpression>	expressions
private static final HeadersRequestCondition	PRE_FLIGHT_MATCH

构造器概要

构造器

限定符	构造器	说明
	HeadersRequestCondition(String... headers)	Create a new instance from the given header expressions.
private	HeadersRequestCondition(Set<HeadersRequestCondition.HeaderExpression> conditions)

方法概要

修饰符和类型	方法	说明
HeadersRequestCondition	combine(HeadersRequestCondition other)	Returns a new instance with the union of the header expressions from "this" and the "other" instance.
int	compareTo(HeadersRequestCondition other, RequestContext request)	Compare to another condition based on header expressions.
protected Collection<HeadersRequestCondition.HeaderExpression>	getContent()	Return the discrete items a request condition is composed of.
Set<NameValueExpression<String>>	getExpressions()	Return the contained request header expressions.
HeadersRequestCondition	getMatchingCondition(RequestContext request)	Returns "this" instance if the request matches all expressions; or null otherwise.
protected String	getToStringInfix()	The notation to use when printing discrete items of content.
private long	getValueMatchCount(Set<HeadersRequestCondition.HeaderExpression> expressions)
private static Set<HeadersRequestCondition.HeaderExpression>	parseExpressions(String... headers)

从类继承的方法 cn.taketoday.web.handler.condition.AbstractRequestCondition

equals, hashCode, isEmpty, toString

从类继承的方法 java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

字段详细资料

PRE_FLIGHT_MATCH

private static final HeadersRequestCondition PRE_FLIGHT_MATCH

expressions

private final Set<HeadersRequestCondition.HeaderExpression> expressions

构造器详细资料

HeadersRequestCondition

public HeadersRequestCondition(String... headers)

Create a new instance from the given header expressions. Expressions with header names 'Accept' or 'Content-Type' are ignored. See ConsumesRequestCondition and ProducesRequestCondition for those.

参数:

headers - media type expressions with syntax defined in RequestMapping.headers(); if 0, the condition will match to every request

HeadersRequestCondition

private HeadersRequestCondition(Set<HeadersRequestCondition.HeaderExpression> conditions)

方法详细资料

parseExpressions

private static Set<HeadersRequestCondition.HeaderExpression> parseExpressions(String... headers)

getExpressions

public Set<NameValueExpression<String>> getExpressions()

Return the contained request header expressions.

getContent

protected Collection<HeadersRequestCondition.HeaderExpression> getContent()

从类复制的说明: AbstractRequestCondition

Return the discrete items a request condition is composed of.

For example URL patterns, HTTP request methods, param expressions, etc.

指定者:

getContent 在类中 AbstractRequestCondition<HeadersRequestCondition>

返回:

a collection of objects (never null)

getToStringInfix

protected String getToStringInfix()

从类复制的说明: AbstractRequestCondition

The notation to use when printing discrete items of content.

For example " || " for URL patterns or " && " for param expressions.

指定者:

getToStringInfix 在类中 AbstractRequestCondition<HeadersRequestCondition>

combine

public HeadersRequestCondition combine(HeadersRequestCondition other)

Returns a new instance with the union of the header expressions from "this" and the "other" instance.

参数:

other - the condition to combine with.

返回:

a request condition instance that is the result of combining the two condition instances.

getMatchingCondition

@Nullable
public HeadersRequestCondition getMatchingCondition(RequestContext request)

Returns "this" instance if the request matches all expressions; or null otherwise.

参数:

request - the current request context

返回:

a condition instance in case of a match or null otherwise.

compareTo

public int compareTo(HeadersRequestCondition other,
 RequestContext request)

Compare to another condition based on header expressions. A condition is considered to be a more specific match, if it has:

1. A greater number of expressions.
2. A greater number of non-negated expressions with a concrete value.

It is assumed that both instances have been obtained via getMatchingCondition(RequestContext) and each instance contains the matching header expression only or is otherwise empty.

request - the current request context

getValueMatchCount

private long getValueMatchCount(Set<HeadersRequestCondition.HeaderExpression> expressions)