Question

有人要求我使用Go做一个简单的RESTful服务，该服务必须使用其ID值检索有关特定书籍的所有数据。

public function index()
{
    $users = User::all();
    return view('users.profile')->with('users',$users);
}

public function show($id)
{
    $users = User::find($id);
    return view('users.profile')->with('users',$users);
}

预期输出如果我输入-> http://localhost:8080/api/books/1 这一定要回报我

<h3>{{$users->name}}</h3>

相反，我的浏览器什么也没得到

Answer 1

我只需按如下所示格式化代码，即可正常工作（请注意package main import ( "encoding/json" "fmt" "log" "net/http" "github.com/gorilla/mux" ) type Book struct { ID string `json:"id"` Isbn string `json:"isbn"` Title string `json:"title"` Author *Author `json:"author"` } //Author struct type Author struct { Firstname string `json:"firstname"` Lastname string `json:"lastname"` } //variables //slice-> variable link to array var books []Book // Get single book func getBook(w http.ResponseWriter, r *http.Request) { w.Header().Set("Content-Type", "application/json") params := mux.Vars(r) // Gets params // Loop through books and find one with the id from the params for _, item := range books { if item.ID == params["id"] { w.WriteHeader(http.StatusOK) json.NewEncoder(w).Encode(item) return } } w.WriteHeader(http.StatusNotFound) json.NewEncoder(w).Encode(&Book{}) } func main() { fmt.Println("Listening on :8080") // initialize mux router r := mux.NewRouter() // mock data books = append(books, Book{ID: "1", Isbn: "32123", Title: "Book one", Author: &Author{Firstname: "J.K.", Lastname: "Rowling"}}) books = append(books, Book{ID: "2", Isbn: "45434", Title: "Book two", Author: &Author{Firstname: "P.K.", Lastname: "Rowling"}}) // router handler r.HandleFunc("/api/books/{id}", getBook).Methods("GET") log.Fatal(http.ListenAndServe(":8080", r)) }函数）。

curl 127.0.0.1:8080/api/books/1

运行上述程序后。控制台上的以下命令：

{"id":"1","isbn":"32123","title":"Book one","author":{"firstname":"J.K.","lastname":"Rowling"}}

返回：

{{1}}

最后，作为使用Golang实现ReST API的建议，您可以选中here。

如何使用可用属性从json检索特定数据

1 个答案: