go 1.17
http
easyjson #github上的一个rest_decode项目
http_router
restful01
go_http
package main
import (
"fmt"
"net/http"
"time"
)
func main() {
http.HandleFunc("/", func(w http.ResponseWriter, r *http.Request) {
fmt.Fprintf(w, "Hello World!")
})
http.HandleFunc("/time/", func(w http.ResponseWriter, r *http.Request) {
t := time.Now()
timeStr := fmt.Sprintf("{\"time\": \"%s\"}", t)
w.Write([]byte(timeStr))
})
http.ListenAndServe(":8080", nil)
}
简要：
http.ListenAndServe 函数负责监听8080端口，建立连接
http.HandleFunc 处理请求，它拥有w，r两个参数，w负责客户端应答，r负责接收客户端请求
http_router
https://github.com/joshbuddy/http_router
go get -u github.com/julienschmidt/httprouter
package main
import (
"fmt"
"log"
"net/http"
"github.com/julienschmidt/httprouter"
)
func Index(w http.ResponseWriter, r *http.Request, _ httprouter.Params) {
fmt.Fprint(w, "Welcome!\n")
}
func Hello(w http.ResponseWriter, r *http.Request, ps httprouter.Params) {
fmt.Fprintf(w, "hello, %s!\n", ps.ByName("name"))
}
func main() {
router := httprouter.New()
router.GET("/", Index)
router.GET("/hello/:name", Hello)
log.Fatal(http.ListenAndServe(":8080", router))
}
go_restful
https://github.com/joshbuddy/http_router
go get -u github.com/julienschmidt/httprouter
package main
import (
"encoding/json"
"fmt"
"log"
"net/http"
"github.com/julienschmidt/httprouter"
)
type Employee struct {
ID string `json:"id"`
Name string `json:"name"`
Age int `json:"age"`
}
var employeeDB map[string]*Employee
func init() {
employeeDB = map[string]*Employee{}
employeeDB["Mike"] = &Employee{"e-1", "Mike", 35}
employeeDB["Rose"] = &Employee{"e-2", "Rose", 45}
employeeDB["Igo"] = &Employee{"e-3", "Igo", 25}
}
func Index(w http.ResponseWriter, r *http.Request, _ httprouter.Params) {
fmt.Fprint(w, "Welcome!\n")
}
func GetEmployeeByName(w http.ResponseWriter, r *http.Request, ps httprouter.Params) {
qName := ps.ByName("name")
var (
ok bool
info *Employee
infoJson []byte
err error
)
if info, ok = employeeDB[qName]; !ok {
w.Write([]byte("{\"error\":\"Not Found\"}"))
return
}
if infoJson, err = json.Marshal(info); err != nil {
w.Write([]byte(fmt.Sprintf("{\"error\":,\"%s\"}", err)))
return
}
w.Write(infoJson)
}
func main() {
router := httprouter.New()
router.GET("/", Index)
router.GET("/employee/:name", GetEmployeeByName)
log.Fatal(http.ListenAndServe(":8080", router))
}
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