golang server示例
一个简单的web服务器
package main
import (
"fmt"
"log"
"net/http"
)
func main() {
http.HandleFunc("/", handler)
log.Fatal(http.ListenAndServe("localhost:8888", nil))
}
func handler(w http.ResponseWriter, r *http.Request) {
fmt.Println("url.path is ", r.URL.Path)
}
简单看下Request结构体中几个重要成员
type Request struct {
// Form contains the parsed form data, including both the URL
// field's query parameters and the POST or PUT form data.
// This field is only available after ParseForm is called.
// The HTTP client ignores Form and uses Body instead.
Form url.Values
// PostForm contains the parsed form data from POST, PATCH,
// or PUT body parameters.
//
// This field is only available after ParseForm is called.
// The HTTP client ignores PostForm and uses Body instead.
PostForm url.Values
// MultipartForm is the parsed multipart form, including file uploads.
// This field is only available after ParseMultipartForm is called.
// The HTTP client ignores MultipartForm and uses Body instead.
MultipartForm *multipart.Form
}
获取get参数
func handler(w http.ResponseWriter, r *http.Request) {
r.ParseForm()
fmt.Println("value of param key is:", r.Form.Get("key"))
}
获取post参数
提交方式: application/x-www-form-urlencoded
func handler(w http.ResponseWriter, r *http.Request) {
r.ParseForm()
fmt.Println("value of param key is:", r.PostFormValue("key"))
}
提交方式: json
type RequestParm struct {
Name string `json:"name"`
Age int `json:"age"`
ScoreList []int `json:"score_list"`
}
// NewDecoder
func handler(w http.ResponseWriter, r *http.Request) {
req := &RequestParm{}
err := json.NewDecoder(r.Body).Decode(req)
if err != nil {
fmt.Println("json decode error")
return
}
fmt.Println(req)
}
// Unmarshal
func handler(w http.ResponseWriter, r *http.Request) {
req := &RequestParm{}
body, err := ioutil.ReadAll(r.Body)
if err != nil {
panic(err)
}
err = json.Unmarshal(body, req)
if err != nil {
panic(err)
}
fmt.Println(req)
}
参考资料
