🐛 binarywang#3196 【公众号】修复materialImageOrVoiceDownload接口无法正常刷新AccessTo…

…ken的问题

weixin-java-mp/src/main/java/me/chanjar/weixin/mp/util/requestexecuter/material/MaterialVoiceAndImageDownloadOkhttpRequestExecutor.java

@@ -35,7 +35,7 @@ public InputStream execute(String uri, String materialId, WxType wxType) throws
     Request request = new Request.Builder().url(uri).get().post(requestBody).build();
     Response response = client.newCall(request).execute();
     String contentTypeHeader = response.header("Content-Type");
-    if ("text/plain".equals(contentTypeHeader)) {
+    if ("text/plain".equals(contentTypeHeader) || "application/json; charset=utf-8".equals(contentTypeHeader)) {
       String responseContent = response.body().string();
       throw new WxErrorException(WxError.fromJson(responseContent, WxType.MP));
     }