Question

Volley不断发送If-Modified-Since标题。

我需要阻止凌空发送此标头，因为它一直在弄乱第三方服务器的响应。如何阻止凌空发送缓存标头？

Answer 1

<强>更新

在>data<-as(rules2.sorted, "data.frame") >test_predict$prob<-predict(spec_q2, newdata=data,type="response") Error in `$<-.data.frame`(`*tmp*`, "prob", value = c(0.972014164301877, : replacement has 2800 rows, data has 1 In addition: Warning message: 'newdata' had 26 rows but variables found have 2800 rows中，您会找到

BasicNetwork.java

所以我认为您可以尝试以下方法之一：

致电private void addCacheHeaders(Map<String, String> headers, Cache.Entry entry) { // If there's no cache entry, we're done. if (entry == null) { return; } if (entry.etag != null) { headers.put("If-None-Match", entry.etag); } if (entry.lastModified > 0) { Date refTime = new Date(entry.lastModified); headers.put("If-Modified-Since", DateUtils.formatDate(refTime)); } }，例如：setShouldCache(false);
创建自定义jsonObjectRequest.setShouldCache(false);变量，您将覆盖BasicNetwork并设置performRequest变量null或Cache.Entry，可以尝试以下操作：
```
entry.lastModified <= 0
```

END OF UPDATE

IMO您需要覆盖BasicNetwork basicNetwork = new BasicNetwork(hurlStack) { @Override public NetworkResponse performRequest(Request<?> request) throws VolleyError { request.setCacheEntry(null); // request.setShouldCache(false); return super.performRequest(request); } };方法，您可以尝试以下两种方法之一：

getHeaders

或

        @Override
        public Map<String, String> getHeaders() throws AuthFailureError {
            Map<String, String> headerMap = super.getHeaders();
            if (headerMap.containsKey("If-Modified-Since")) {
                headerMap.remove("If-Modified-Since");
            }
            return headerMap;
        }

希望这有帮助！

阻止Volley发送缓存标头

1 个答案: