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JavaScript Object Notation (JSON) support is included in the default distribution. JSON is another data exchangeable format like XML, but it is more lightweight and easily readable. It is based on a subset of Javascript language. Therefore, Javascript can understand JSON, and it can make Javascript objects by using JSON strings. JSON is based on key-value pairs and it uses colons to separate keys and values. JSON doesn't use end tags, and it uses braces (curly brackets) to enclose JSON Objects.

For example,

<root><test>json object</test></root> == {“root”:{“test”:”json object”}}

When it comes to converting XML to JSON and vice versa, there are two major conventions, one named "Badgerfish" and the other, “Mapped.” The main difference between these two conventions exists in the way they map XML namespaces into JSON.

<xsl:root xmlns:xsl="http://foo.com"><data>my json string</data></xsl:root>

This XML string can be converted into JSON as follows.

  • Using “Badgerfish”
{"xsl:root":{"@xmlns":{"xsl":"http://foo.com"},"data":{"$":"my json string"}}}
  • Using “Mapped”

If we use the namespace mapping as http://foo.com -> foo

{"foo.root":{"data":"my json string"}}

Learn more information about JSON here.

 

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