private static String convertBodyFormData(final String aiResponse) {
        Map<String, Object> formDataMap = GsonUtils.getInstance().toObjectMap(extractJsonBodyFromHttpResponse(aiResponse));
        return mapToFormUrlEncoded(formDataMap);
    }
this is ai request transformer plugin.
shenyu-plugin/shenyu-plugin-ai/shenyu-plugin-ai-request-transformer/src/main/java/org/apache/shenyu/plugin/ai/transformer/request/AiRequestTransformerPlugin.java