19. [TD] Cross-Origin Resource Sharing (CORS)

Keywords: CORS (Cross-Origin Resource Sharing).

Here, we will create a new project so that the secure election web service accepts cross-domain requests.

The Eclipse project is as follows:

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Task: Follow the process described in Section 18.9 to build this project.

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Once this project is built, here is what you can do with the HTML client described in Section 18.2. At the start of the requests, the [dbelections] database is as follows:

In [1], the posted JSON value is as follows:

[{"id":1,"version":8,"name":"A","votes":32000,"seats":0,"eliminated":false},{"id":2,"version":12,"name":"B","votes":25000,"seats":0,"eliminated":false},{"id":3,"version":13,"name":"C","votes":16000,"seats":0,"eliminated":false},{"id":4,"version":12,"name":"D","votes":12000,"seats":0,"eliminated":false},{"id":5,"version":13,"name":"E","votes":8000,"seats":0,"eliminated":false},{"id":6,"version":12,"name":"F","votes":4500,"seats":0,"eliminated":false},{"id":7,"version":12,"name":"G","votes":2500,"seats":0,"eliminated":false}]

In [2], the [seats] and [eliminated] fields have been calculated. We copy the [body] field from [2] to [3] below:

The [dbelections] database is then as follows: