golang请求参数格式

package main

import (
    "log"
    "net/http"
)

func main() {
    http.HandleFunc("/login", func(w http.ResponseWriter, r *http.Request) {
        username := r.PostFORMValue("username")
        passWord := r.PostFormValue("password")
        log.Printf("username: %s, password: %s", username, password)
    })

    log.Fatal(http.ListenAndServe(":8080", nil))
}

package main

import (
    "encoding/json"
    "log"
    "net/http"
)

type User struct {
    Username string `json:"username"`
    Password string `json:"password"`
}

func main() {
    http.HandleFunc("/login", func(w http.ResponseWriter, r *http.Request) {
        var user User
        err := json.NewDecoder(r.Body).Decode(&user)
        if err != nil {
            http.Error(w, err.Error(), http.StatusBadRequest)
            return
        }
        log.Printf("username: %s, password: %s", user.Username, user.Password)
    })

    log.Fatal(http.ListenAndServe(":8080", nil))
}

package main

import (
    "log"
    "net/http"
    "net/url"
)

func main() {
    http.HandleFunc("/search", func(w http.ResponseWriter, r *http.Request) {
        query := r.URL.Query()
        name := query.Get("name")
        minPrice := query.Get("minPrice")
        maxPrice := query.Get("maxPrice")

        log.Printf("name: %s, minPrice: %s, maxPrice: %s", name, minPrice, maxPrice)
    })

    log.Fatal(http.ListenAndServe(":8080", nil))
}

package main

import (
    "log"
    "net/http"
    "regexp"
)

func main() {
    http.HandleFunc("/users/", func(w http.ResponseWriter, r *http.Request) {
        re := regexp.MustCompile(`/users/(d+)`)
        match := re.FindStringSubmatch(r.URL.Path)
        if match == nil {
            http.NotFound(w, r)
            return
        }

        id := match[1]
        log.Printf("user id: %s", id)
    })

    log.Fatal(http.ListenAndServe(":8080", nil))
}