rest - Golang gorilla mux REST api 在使用 PUT 和 DELETE 方法时出现 405 错误

Question

Golang gorilla mux REST api 在使用 PUT 和 DELETE 方法时出现 405 错误。但是 GET 和 POST 方法工作正常。

我使用 postman 测试我的 REST api 服务器，GET 和 POST 请求工作正常，但 PUT 和 DELETE 方法不起作用并给出 错误 405

...
...
func updateBook(w http.ResponseWriter, r *http.Request){
    w.Header().Set("Content-Type", "application/json")
    params := mux.Vars(r)
    for index, item := range books {
        if item.ID == params["id"]{
            books = append(books[:index], books[index+1:]...)
            var book Book
            _ = json.NewDecoder(r.Body).Decode(&book)
            book.ID = params["id"]
            books = append(books, book)
            json.NewEncoder(w).Encode(books)
            return
        }
    }
}

func deleteBook(w http.ResponseWriter, r *http.Request){
    w.Header().Set("Content-Type", "application/json")
    params := mux.Vars(r)
    for index, item := range books {
        if item.ID == params["id"]{
            books = append(books[:index], books[index+1:]...)
            break
        }
    }
    json.NewEncoder(w).Encode(books)
}



func main() {
    // INIT router
    r := mux.NewRouter()

    // Mock data
    books = append(books, Book{
    ID: "1",
    Isbn: "43432",
    Title: "Book first",
    Author: &Author{
        FirstName: "Vishal",
        LastName: "Sharma",
    },
    })

    // Route handlers / Endpoints
    r.HandleFunc("/api/books", getbooks).Methods("GET")
    r.HandleFunc("/api/books/{id}", getBook).Methods("GET")
    r.HandleFunc("/api/books", createBook).Methods("POST")
    r.HandleFunc("api/books/{id}", updateBook).Methods("PUT")
    r.HandleFunc("api/books/{id}", deleteBook).Methods("DELETE")

    log.Fatal(http.ListenAndServe(":3000", r))
}

Answer 1

正如评论中指出的那样，这是一个错字。

r.HandleFunc("api/books/{1}", deleteBook).Methods("DELETE")

我在 api/books/{1} 之前缺少/正斜杠

正确的语法是

r.HandleFunc("/api/books/{1}", deleteBook).Methods("DELETE")