go - 如何使用 go 修复 POST 404 错误？不是源代码错误

Question

我用 golang book 输入我的源代码。我的源码和我的golang书的源码是一样的

查看源码

--------golang--------

package main

import (
    "fmt"
    "net/http"
)

func main() {
   r := &router{make(map[string]map[string]HandlerFunc)}

   r.HandleFunc("GET", "/", func(c *Context) {
       fmt.Fprintln(c.ResponseWriter, "welcome!")
   })

   r.HandleFunc("GET", "/about", func(c *Context) {
       fmt.Fprintln(c.ResponseWriter, "about")
   })

   r.HandleFunc("GET", "/users/:id", func(c *Context) {
       fmt.Fprintf(c.ResponseWriter, "retrieve user %v\n",
       c.Params["id"])
   })

   r.HandleFunc("GET", "/users/:user_id/addresses/:address_id", func(c *Context) {
       fmt.Fprintf(c.ResponseWriter, "retrieve user %v's address %v\n",
       c.Params["user_id"], c.Params["address_id"])
   })

   r.HandleFunc("POST", "/users", func(c *Context) {
       fmt.Fprintf(c.ResponseWriter, "create user\n")
   })

   r.HandleFunc("POST", "/users/:user_id/addresses", func(c *Context) {
       fmt.Fprintf(c.ResponseWriter, "create user %v's address\n", c.Params["user_id"])
   })

   http.ListenAndServe(":8080", r)
}

PS C:\Users\user\go> curl http://localhost:8080/users/1 curl :404 页面未找到在行:1 字符:1+ curl http://localhost:8080/users/1+ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ + CategoryInfo:InvalidOperation:(System.Net.HttpWebRequest:HttpWebRequest)[Invoke-WebRequest]，WebException + FullyQualifiedErrorId : WebCmdletWebResponseException,Microsoft.PowerShell.Commands.InvokeWebRequestCommand

Answer 1

当您为 HandlerFunc 定义 uri 时，参数必须介于 {}

/users/{id} 而不是/users/:id