golang最简单的server和client_newalgoservingclient

client端

package main
import (
	"bytes"
	"fmt"
	"io/ioutil"
	"net/http"
	"net/url"
)
func main() {
	request_url := "http://localhost:8080/"
	// 要 POST的 参数
	form := url.Values{
		"name": {"xiaoming"},
		"address":  {"beijing"},
		"subject":  {"Hello"},
		"from":     {"china"},
	}
	// func Post(url string, bodyType string, body io.Reader) (resp *Response, err error) {
	//对form进行编码
	body := bytes.NewBufferString(form.Encode())
	rsp, err := http.Post(request_url, "application/x-www-form-urlencoded", body)
	if err != nil {
		panic(err)
	}
	defer rsp.Body.Close()
	body_byte, err := ioutil.ReadAll(rsp.Body)
	if err != nil {
		panic(err)
	}
	fmt.Println(string(body_byte))
}

server端

package main
 
import (
    "fmt"
    "log"
    "net/http"
)
 
func main() {
    http.HandleFunc("/", ExampleHandler)
    if err := http.ListenAndServe(":8080", nil); err != nil {
        log.Fatal(err)
    }
}
 
func ExampleHandler(w http.ResponseWriter, r *http.Request) {
 
    // Double check it's a post request being made
    if r.Method != http.MethodPost {
        w.WriteHeader(http.StatusMethodNotAllowed)
        fmt.Fprintf(w, "invalid_http_method")
        return
    }
 
    // Must call ParseForm() before working with data
    r.ParseForm()
 
    // Log all data. Form is a map[]
    log.Println(r.Form)
 
    // Print the data back. We can use Form.Get() or Form["name"][0]
    fmt.Fprintf(w, "Hello "+r.Form.Get("name"))
}
 
 
//可以直接命令行请求
 
//curl -X POST http://localhost:8080 -d "name=zhangsan"