地址栏输入

package mainimport (    //"database/sql"    //_ "github.com/mattn/go-sqlite3"    "fmt"    "log"    "net/http"    //"strconv")func addUser(w http.ResponseWriter, req *http.Request) {     userId := req.FormValue("Id")    name := req.FormValue("name")    out := userId + "-" + name        log.Println(out)    fmt.Fprintf(w, out)}func sayHello(w http.ResponseWriter, r *http.Request) {     fmt.Fprintf(w, "hello world!")}func main() {     http.HandleFunc("/", sayHello)    http.HandleFunc("/user", addUser)    err := http.ListenAndServe(":8880", nil)    if err != nil {         log.Fatal("ListenAndServe: ", err.Error())    }}