- FilterMb4 added.

utils/utils.go

@@ -7,6 +7,7 @@ import (
 	"reflect"
 	"strings"
 	"time"
+	"unicode/utf8"
 
 	"git.rosy.net.cn/baseapi"
 	"github.com/satori/go.uuid"
@@ -147,3 +148,15 @@ func SendFakeRequest(method, url, body, contentType string) (*http.Response, err
 	client := &http.Client{}
 	return client.Do(request)
 }
+
+// 过滤 utf8mb4（比如emoji表情）
+func FilterMb4(content string) string {
+	newContent := &strings.Builder{}
+	for _, value := range content {
+		size := utf8.RuneLen(value)
+		if size >= 1 && size <= 3 {
+			newContent.WriteRune(value)
+		}
+	}
+	return newContent.String()
+}