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| package main | |
| import ( | |
| "fmt" | |
| "net/http" | |
| "strconv" | |
| "strings" | |
| ) | |
| func main() { | |
| http.HandleFunc("/", func(w http.ResponseWriter, r *http.Request) { | |
| pathArray := strings.Split(r.URL.Path, "/")[1:] | |
| pathHead := pathArray[0] | |
| if pathHead == "echo" { | |
| var echoString string | |
| if len(pathArray) <= 1 { | |
| echoString = "" | |
| } else { | |
| echoString = pathArray[1] | |
| } | |
| fmt.Fprint(w, echoString) | |
| } else if pathHead == "add" && len(pathArray) >= 3 { | |
| l, lErr := strconv.ParseInt(pathArray[1], 10, 64) | |
| r, rErr := strconv.ParseInt(pathArray[2], 10, 64) | |
| if lErr != nil || rErr != nil { | |
| w.WriteHeader(400) | |
| fmt.Fprint(w, "Parameter is not a integer.") | |
| } else { | |
| fmt.Fprint(w, l+r) | |
| } | |
| } else { | |
| w.WriteHeader(404) | |
| fmt.Fprint(w, "Not Found") | |
| } | |
| }) | |
| http.ListenAndServe(":8080", nil) | |
| } |
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