Package org.springframework.web.bind.annotation

Annotation Interface MatrixVariable

@Target(PARAMETER) @Retention(RUNTIME) @Documented public @interface MatrixVariable
Annotation which indicates that a method parameter should be bound to a name-value pair within a path segment. Supported for RequestMapping annotated handler methods.

If the method parameter type is Map and a matrix variable name is specified, then the matrix variable value is converted to a Map assuming an appropriate conversion strategy is available.

If the method parameter is Map<String, String> or MultiValueMap<String, String> and a variable name is not specified, then the map is populated with all matrix variable names and values.

Since:
3.2
Author:
Rossen Stoyanchev, Sam Brannen

  • Optional Element Summary

    Optional Elements
    Modifier and Type
    Optional Element
    Description
    String
    defaultValue
    The default value to use as a fallback.
    String
    name
    The name of the matrix variable.
    String
    pathVar
    The name of the URI path variable where the matrix variable is located, if necessary for disambiguation (e.g.
    boolean
    required
    Whether the matrix variable is required.
    String
    value
    Alias for name().

  • Element Details

    • value

      @AliasFor("name") String value
      Alias for name().
      Default:
      ""

    • name

      @AliasFor("value") String name
      The name of the matrix variable.
      Since:
      4.2
      See Also:
      Default:
      ""

    • pathVar

      String pathVar
      The name of the URI path variable where the matrix variable is located, if necessary for disambiguation (e.g. a matrix variable with the same name present in more than one path segment).
      Default:
      "\n\t\t\n\t\t\n\ue000\ue001\ue002\n\t\t\t\t\n"

    • required

      boolean required
      Whether the matrix variable is required.

      Default is true, leading to an exception being thrown in case the variable is missing in the request. Switch this to false if you prefer a null if the variable is missing.

      Alternatively, provide a defaultValue(), which implicitly sets this flag to false.

      Default:
      true

    • defaultValue

      String defaultValue
      The default value to use as a fallback.

      Supplying a default value implicitly sets required() to false.

      Default:
      "\n\t\t\n\t\t\n\ue000\ue001\ue002\n\t\t\t\t\n"