rename ngin to rest

rest/httpx/responses.go

@@ -0,0 +1,29 @@
+package httpx
+
+import (
+	"encoding/json"
+	"net/http"
+
+	"zero/core/logx"
+)
+
+func OkJson(w http.ResponseWriter, v interface{}) {
+	WriteJson(w, http.StatusOK, v)
+}
+
+func WriteJson(w http.ResponseWriter, code int, v interface{}) {
+	w.Header().Set(ContentType, ApplicationJson)
+	w.WriteHeader(code)
+
+	if bs, err := json.Marshal(v); err != nil {
+		http.Error(w, err.Error(), http.StatusInternalServerError)
+	} else if n, err := w.Write(bs); err != nil {
+		// http.ErrHandlerTimeout has been handled by http.TimeoutHandler,
+		// so it's ignored here.
+		if err != http.ErrHandlerTimeout {
+			logx.Errorf("write response failed, error: %s", err)
+		}
+	} else if n < len(bs) {
+		logx.Errorf("actual bytes: %d, written bytes: %d", len(bs), n)
+	}
+}