jmeter request for a multipart / form-data type

Reference to learn original: https: //cloud.tencent.com/developer/news/367695

http request three content-type: application / json, x-www-form-urlencoded, multipart / form-data, the first two of the more common, says this is mainly to use multipart / form-data of.

multipart / form-data main body for the scene parameter post request with a file, such as when new users, a user can upload avatar like; for optional parameters avatar, a capture start below, Note that the request FIG parameters of only one parameter: accountRegistervo