public static FormBody buildFormBody(final Map<String, ?> form) {
        FormBody.Builder paramBuilder = new FormBody.Builder(StandardCharsets.UTF_8);
        for (Map.Entry<String, ?> entry : form.entrySet()) {
            paramBuilder.add(entry.getKey(), String.valueOf(entry.getValue()));
        }
        return paramBuilder.build();
    }
buildFormBody.

@param form form
@return FormBody
shenyu-admin/src/main/java/org/apache/shenyu/admin/utils/HttpUtils.java