douyang2530 2018-07-11 10:16
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将通用结构/接口传递给函数并返回

Can I pass a generic struct or interface into a function, and then return it? I've tried using pointers in the example below, and I've also tried using struct as a return type but I can't seem to do it.

If I use interface{} instead, I seem to be able to pass postData in but getting it back seems to be impossible by returning or updating a pointer. Can anyone tell me where I'm going wrong?

func EmailHandler(writer http.ResponseWriter, request *http.Request) {
    var postData = EmailPostData{}
    ConvertRequestJsonToJson(request, &postData)
}

func ConvertRequestJsonToJson(request *http.Request, model *struct{}) {
    postContent, _ := ioutil.ReadAll(request.Body)
    json.Unmarshal([]byte(postContent), &model)
}
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  • douping1581 2018-07-11 11:03
    关注
    func EmailHandler(writer http.ResponseWriter, request *http.Request) {
        var postData = EmailPostData{}
        ConvertRequestJsonToJson(request, &postData)
        //Use postData, it should be filled
    }
    func ConvertRequestJsonToJson(request *http.Request, model interface{}) {
        postContent, _ := ioutil.ReadAll(request.Body)
        json.Unmarshal([]byte(postContent), model)//json.Unmarshal stores the result in the value pointed to by model
    }
    
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