类 ProducesRequestCondition

构造器详细资料

• ProducesRequestCondition

  public ProducesRequestCondition​(String... produces)

  Creates a new instance from "produces" expressions. If 0 expressions are provided in total, this condition will match to any request.

  参数:

  produces - expressions with syntax defined by RequestMapping.produces()

• ProducesRequestCondition

  public ProducesRequestCondition​(String[] produces,
                                  String[] headers)

  Creates a new instance with "produces" and "header" expressions. "Header" expressions where the header name is not 'Accept' or have no header value defined are ignored. If 0 expressions are provided in total, this condition will match to any request.

  参数:

  produces - expressions with syntax defined by RequestMapping.produces()

  headers - expressions with syntax defined by RequestMapping.headers()

• ProducesRequestCondition

  public ProducesRequestCondition​(String[] produces,
                                  String[] headers,
                                  ContentNegotiationManager manager)

  Same as ProducesRequestCondition(String[], String[]) but also accepting a ContentNegotiationManager.

  参数:

  produces - expressions with syntax defined by RequestMapping.produces()

  headers - expressions with syntax defined by RequestMapping.headers()

  manager - used to determine requested media types

方法详细资料

• getExpressions

  public Set<MediaTypeExpression> getExpressions()

  Return the contained "produces" expressions.

• getProducibleMediaTypes

  public Set<MediaType> getProducibleMediaTypes()

  Return the contained producible media types excluding negated expressions.

• isEmpty

  public boolean isEmpty()

  Whether the condition has any media type expressions.

  覆盖:

  isEmpty 在类中 AbstractRequestCondition<ProducesRequestCondition>

  返回:

  true if empty; false otherwise

• getContent

  protected List<org.springframework.web.servlet.mvc.condition.ProducesRequestCondition.ProduceMediaTypeExpression> 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<ProducesRequestCondition>

  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<ProducesRequestCondition>

• combine

  public ProducesRequestCondition combine​(ProducesRequestCondition other)

  Returns the "other" instance if it has any expressions; returns "this" instance otherwise. Practically that means a method-level "produces" overrides a type-level "produces" condition.

  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

  public ProducesRequestCondition getMatchingCondition​(HttpServletRequest request)

  Checks if any of the contained media type expressions match the given request 'Content-Type' header and returns an instance that is guaranteed to contain matching expressions only. The match is performed via MediaType.isCompatibleWith(MediaType).

  参数:

  request - the current request

  返回:

  the same instance if there are no expressions; or a new condition with matching expressions; or null if no expressions match.

• compareTo

  public int compareTo​(ProducesRequestCondition other,
                       HttpServletRequest request)

  Compares this and another "produces" condition as follows:

  1. Sort 'Accept' header media types by quality value via MediaType.sortByQualityValue(List) and iterate the list.
  2. Get the first index of matching media types in each "produces" condition first matching with MimeType.equals(Object) and then with MediaType.includes(MediaType).
  3. If a lower index is found, the condition at that index wins.
  4. If both indexes are equal, the media types at the index are compared further with MediaType.SPECIFICITY_COMPARATOR.

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