golang入门案例之http client请求

发请求，接收接送，并解析

package main

import (
	"fmt"

	"net/http"
	"io/ioutil"
	"net/url"
	"encoding/json"
	"os"

)

type Student struct {
	Name    string
	Age     int
	Guake   bool
	Classes []string
	Price   float32
}

func (s *Student) ShowStu() {
	fmt.Println("show Student :")
	fmt.Println("\tName\t:", s.Name)
	fmt.Println("\tAge\t:", s.Age)
	fmt.Println("\tGuake\t:", s.Guake)
	fmt.Println("\tPrice\t:", s.Price)
	fmt.Printf("\tClasses\t: ")
	for _, a := range s.Classes {
		fmt.Printf("%s ", a)
	}
	fmt.Println("")
}

type multitypeTest struct {
	One string `json:"one"`
	Two string `json:"two"`
}
func (s *multitypeTest) Showmul() {
	fmt.Println("show Student :")
	fmt.Println("\tName\t:", s.One)
	fmt.Println("\tAge\t:", s.Two)

}
func IndexHandler(w http.ResponseWriter, r *http.Request) {
	fmt.Fprintln(w, "hello world")
}
func main() {
	//jsonTest()
	httpGet()

}
func httpPostForm() {

	resp, err := http.PostForm("",
		url.Values{"key": {"Value"}, "id": {"123"}})

	if err != nil {
		// handle error
	}

	defer resp.Body.Close()
	body, err := ioutil.ReadAll(resp.Body)
	if err != nil {
		// handle error
	}

	fmt.Println(string(body))

}
func httpGet() {
	resp, err := http.Get("https://X.rong360.com/XXX/XXX")
	CheckError(err)
	defer resp.Body.Close()
	body, err := ioutil.ReadAll(resp.Body)
	CheckError(err)
	fmt.Println(string(body))
	//f1 := &multitypeTest{
	//	One:"a",
	//	Two:"b",
	//	}
	//f1.Showmul()
	//fjson1, err := json.Marshal(f1)
	//fmt.Println(string(fjson1))
	CheckError(err)
	f2 := &multitypeTest{}
	err = json.Unmarshal([]byte(body), &f2)
	CheckError(err)
	f2.Showmul()

}

func jsonTest() {
	//解析固定结构的json
	st := &Student{
		"Xiao Ming",
		16,
		true,
		[]string{"Math", "English", "Chinese"},
		9.99,
	}
	st1, err := json.Marshal(st)
	fmt.Println(string(st1))
	CheckError(err)
	stb := &Student{}
	err = json.Unmarshal([]byte(st1), &stb)
	stb.ShowStu()
	//
	//b := []byte(`{1:"Wednesday",2:6,3:["Gomez","Morticia"]}`)

	////解析未知结构的json
	//var f interface{}
	//err = json.Unmarshal(b, &f)
	//CheckError(err)
	//这是f里面存储的是一个键值对的map
	//f = map[string]interface{}{
	//	"Name": "Wednesday",
	//	"Age":  6,
	//	"Parents": []interface{}{
	//		"Gomez",
	//		"Morticia",
	//	},
	//}
	//m := f.(map[interface{}]interface{})
	//for k, v := range m {
	//	switch vv := v.(type) {
	//	case string:
	//		fmt.Println(k, "is string", vv)
	//	case int:
	//		fmt.Println(k, "is int", vv)
	//	case float64:
	//		fmt.Println(k, "is float64", vv)
	//	case []interface{}:
	//		fmt.Println(k, "is an array:")
	//		for i, u := range vv {
	//			fmt.Println(i, u)
	//		}
	//	default:
	//		fmt.Println(k, "is of a type I don't know how to handle")
	//	}
	//}
}
func CheckError(err error) {
	if err != nil {
		fmt.Fprintf(os.Stderr, "Fatal error: %s", err.Error())
		os.Exit(1)
	}
}