类 ModelMap

构造器详细资料

• ModelMap

  public ModelMap()

  Construct a new, empty ModelMap.

• ModelMap

  public ModelMap​(String attributeName,
                  @Nullable
                  Object attributeValue)

  Construct a new ModelMap containing the supplied attribute under the supplied name.

  另请参阅:

  addAttribute(String, Object)

• ModelMap

  public ModelMap​(Object attributeValue)

  Construct a new ModelMap containing the supplied attribute. Uses attribute name generation to generate the key for the supplied model object.

  另请参阅:

  addAttribute(Object)

方法详细资料

• addAttribute

  public ModelMap addAttribute​(String attributeName,
                               @Nullable
                               Object attributeValue)

  Add the supplied attribute under the supplied name.

  参数:

  attributeName - the name of the model attribute (never null)

  attributeValue - the model attribute value (can be null)

• addAttribute

  public ModelMap addAttribute​(Object attributeValue)

  Add the supplied attribute to this Map using a generated name.

  Note: Empty Collections are not added to the model when using this method because we cannot correctly determine the true convention name. View code should check for null rather than for empty collections as is already done by JSTL tags.

  参数:

  attributeValue - the model attribute value (never null)

• addAllAttributes

  public ModelMap addAllAttributes​(@Nullable
                                   Collection<?> attributeValues)

  Copy all attributes in the supplied Collection into this Map, using attribute name generation for each element.

  另请参阅:

  addAttribute(Object)

• addAllAttributes

  public ModelMap addAllAttributes​(@Nullable
                                   Map<String,​?> attributes)

  Copy all attributes in the supplied Map into this Map.

  另请参阅:

  addAttribute(String, Object)

• mergeAttributes

  public ModelMap mergeAttributes​(@Nullable
                                  Map<String,​?> attributes)

  Copy all attributes in the supplied Map into this Map, with existing objects of the same name taking precedence (i.e. not getting replaced).

• containsAttribute

  public boolean containsAttribute​(String attributeName)

  Does this model contain an attribute of the given name?

  参数:

  attributeName - the name of the model attribute (never null)

  返回:

  whether this model contains a corresponding attribute

• getAttribute

  @Nullable
  public Object getAttribute​(String attributeName)

  Return the attribute value for the given name, if any.

  参数:

  attributeName - the name of the model attribute (never null)

  返回:

  the corresponding attribute value, or null if none

  从以下版本开始:

  5.2