Error sending request with httpc, with array form

[Dongss]

Describe the bug

Sending request with httpc, with array form ?status=["Processing", "Cancelled"]

Server got error:

fullName: `status`, error: `string: `[Processing Cancelled]`, error: `invalid character 'P' looking for beginning of value``

To Reproduce

1. The code is API defination:

   type MyRequest struct {
    Status   []string `form:"status,optional"` 
   }

code:

    req := types.MyRequest{
        Status: []string{"Processing",  "Cancelled"}
    }

    httpc.Do(ctx, "GET", "localhost:80", req)

3. The error is server side got error:

   fullName: `status`, error: `string: `[Processing Cancelled]`, error: `invalid character 'P' looking for beginning of value``
   

Expected behavior A clear and concise description of what you expected to happen.

Screenshots If applicable, add screenshots to help explain your problem.

Environments (please complete the following information):

• OS: [Linux]
• go-zero version [1.6.3]
• goctl version [1.5.6]

More description

The problem seems like happening here: fmt.Sprint(v)

https://github.com/zeromicro/go-zero/blob/d5302f2dbe1ea23812c4775bedcbe6626f7641fb/rest/httpc/requests.go#L60

[kesonan]

Use json tag and post json instead.

 type MyRequest struct {
    Status   []string `json:"status,optional"` 
   }