JSONFragmenter

为每个新创建的特性,the attribute identified by the输出属性参数将包含JSON查询所引用的JSON文本。

json_type属性将包含文本的json类型（对象，数组，字符串，etc) and the json_index parameter will contain the object key or array index of the JSON value.

If the JSON query cannot be fully evaluated,将记录一条消息，and the translation will continue.

The source JSON document.The JSON document can come from any string expression,包括属性值和工作区参数。

The JSON Query parameter is the JSON query referring to the JSON values which will become new FME features.

A JSON query is a mechanism to refer to values inside JSON text.最外层的json值，which must be an object or an array,is always referred to by the term "json".所包含的值可以使用类似于javascript的方括号索引运算符来引用。数组中的值可以使用其在数组中基于零的位置来引用（例如，json[2]用于第三个元素）。

对象中的值可以使用其对象键名称来引用。例如：

json["key"]

All of the values in an array or object can be referred to collectively using a wildcard index.For example:

json[*]

The query used by this transformer can have multiple expressions,separated by a '+' operator.This allows the transformer to refer to values in different areas of the JSON text.For example:

json["resultSet_1"][*] + json["resultSet_2"][*]

有关JSON查询的更多信息，请参见下面的内容。

Name of the attribute that contains the JSON fragment.

如果json查询生成一个json对象，通过将设置为，键可用于为新功能生成其他属性。Yes.If the JSON query produces a JSON array,并向Prefix New Attributes Withparameter,a list attribute will be created,using the prefix as the list name,以及作为列表元素的JSON数组值。

Note:List attributesare not accessible from the output schema in Workbench unless they are first processed using a transformer that operates on them,such asListExploderorListConcatenator.All list attribute transformers are displayed in the Contents pane of the Transformer Help underLists.或者，AttributeExposercan be used.

When the ‘Load Keys as Attributes' parameter is set to ‘Yes',此参数控制创建的属性。If it is set to ‘No',each JSON object key will become an attribute and the corresponding JSON value will become the attribute value.If this parameter is set to ‘Yes',only object values which are simple types (integers,串，etc) will become attribute values,而嵌套的对象和数组将被递归地展平。

If the ‘Load Keys as Attributes' parameter is set to ‘Yes',the ‘Prefix New Attributes With' parameter may be used to provide a string with which to prefix the newly-created attributes.If the selected format is GeoJSON or ESRIJSON,特定于格式的键不会作为属性添加，but will instead be handled by the appropriate format parser.

Exposes any attributes so they can be used by other transformers.直接在文本框中键入或单击“浏览”按钮以显示编辑器并在其中添加属性。