英文:
Creating a simple Json response GO
问题
我正在查看一个使用GO创建REST API的教程。我正在尝试构建一个Web服务器并提供一个简单的JSON响应：
package mainimport ("encoding/json""fmt""net/http")type Payload struct {Stuff Data}type Data struct {Fruit FruitsVeggies Vegetables}type Fruits map[string]inttype Vegetables map[string]intfunc serveRest(w http.ResponseWriter, r *http.Request) {response, err := getJsonResponse()if err != nil {panic(err)}fmt.Fprintf(w, string(response))}func main() {http.HandleFunc("/", serveRest)http.ListenAndServe("localhost:7200", nil)}func getJsonResponse() ([]byte, error) {fruits := make(map[string]int)fruits["Apples"] = 25fruits["Oranges"] = 11vegetables := make(map[string]int)vegetables["Carrots"] = 21vegetables["Peppers"] = 0d := Data{fruits, vegetables}p := Payload{d}return json.MarshalIndent(p, "", " ")}
当我运行这段代码时，我得到以下错误：
too many arguments to conversion to Data: Data(fruits, vegetables)
我不明白为什么会出现这个错误，因为它期望有2个参数，而我正好传入了2个参数。这是我第一天尝试GO，所以可能我漏掉了一些概念或其他东西。
英文:
I'm looking at a tutorial for creating REST API's with GO. I'm trying to build a web server and serve up a simple json response:
package mainimport("encoding/json""fmt""net/http")type Payload struct {Stuff Data}type Data struct {Fruit FruitsVeggies Vegetables}type Fruits map[string]inttype Vegetables map[string]intfunc serveRest(w http.ResponseWriter, r *http.Request) {response, err := getJsonResponse()if err != nil {panic(err)}fmt.Fprintf(w, string(response))}func main() {http.HandleFunc("/", serveRest)http.ListenAndServe("localhost:7200", nil)}func getJsonResponse() ([]byte, error){fruits := make(map[string]int)fruits["Apples"] = 25fruits["Oranges"] = 11vegetables := make(map[string]int)vegetables["Carrots"] = 21vegetables["Peppers"] = 0d := Data(fruits, vegetables)p := Payload(d)return json.MarshalIndent(p, "", " ")}
When I run this code I get the error:
too many arguments to conversion to Data: Data(fruits, vegetables)
I don't understand why its throwing that error since its expecting 2 arguments and I'm passing in 2 arguments. This is my first day trying GO so maybe I'm missing some concept or something.
答案1
得分: 3
我发现了我的错误，我传递了一个函数而不是一个对象给我创建的类型：
d := Data(fruits, vegetables)p := Payload(d)
应该改为：
d := Data{fruits, vegetables}p := Payload{d}
英文:
I found my error I passed in a function instead of an object to the types I created:
d := Data(fruits, vegetables)p := Payload(d)
should be:
d := Data{fruits, vegetables}p := Payload{d}
通过集体智慧和协作来改善编程学习和解决问题的方式。致力于成为全球开发者共同参与的知识库，让每个人都能够通过互相帮助和分享经验来进步。
评论