feat: ✨ Add support for Map with enum type keys

[linwumingshi]

#387

Examle Demo

/**
 * @author yu 2021/7/11.
 */
public enum Sex {

    /**
     * male
     */
    MALE,
    /**
     * female
     */
    FEMALE
}

@RestController
@RequestMapping("map/")
public class MapController {

    /**
     * Test Map with enum type keys
     *
     * @param param map
     * @return Map
     */
    @PostMapping("/some/path")
    public Map<Sex, Name> query(@RequestBody Map<Sex, Name> param) {
        return param;
    }
    /**
     * Test Map Value
     */
    @Data
    public static class Name {
        /**
         * name
         */
        private String name;
    }
}

Before the PR:

Body-parameters:

Parameter	Type	Required	Description	Since
name	string	false	name	-

Request-example:

curl -X POST -H "Content-Type: application/json" -H "token:kk" -i 'http://127.0.0.1:8080/map/some/path' --data '{
  "mapKey": {
    "name": ""
  }
}'

Response-fields:

Field	Type	Description	Since
└─name	string	name	-

Response-example:

{
  "mapKey": {
    "name": ""
  }
}

After the PR:

Body-parameters:

Parameter	Type	Required	Description	Since
MALE	object	false	Test Map Value	-
└─name	string	false	name	-
FEMALE	object	false	Test Map Value	-
└─name	string	false	name	-

Request-example:

curl -X POST -H "Content-Type: application/json" -H "token:kk" -i 'http://127.0.0.1:8080/map/some/path' --data '{
  "MALE": {
    "name": ""
  },
  "FEMALE": {
    "name": ""
  }
}'

Response-fields:

Field	Type	Description	Since
MALE	object	Test Map Value	-
└─name	string	name	-
FEMALE	object	Test Map Value	-
└─name	string	name	-

Response-example:

{
  "MALE": {
    "name": ""
  },
  "FEMALE": {
    "name": ""
  }
}