I already have a sub class of Request that is used for http post to the server. The problem is, I have no idea on how can I add a parameter for a file. Posting string to the server is easy. but I need to add file as a different parameter. How can I do it?
我已经有一个Request子类用于http发送到服务器。问题是,我不知道如何为文件添加参数。将字符串发布到服务器很容易。但我需要将文件添加为不同的参数。我该怎么做?
public class AddNewPetRequest extends Request<JSONObject> {
private Response.Listener<JSONObject> listener;
public AddNewPetRequest(String url, Map<String, String> params,
Response.Listener<JSONObject> reponseListener, Response.ErrorListener errorListener) {
super(Request.Method.GET, url, errorListener);
this.listener = reponseListener;
this.params = params;
}
public AddNewPetRequest(int method, String url, Map<String, String> params,
Response.Listener<JSONObject> reponseListener, Response.ErrorListener errorListener) {
super(method, url, errorListener);
this.listener = reponseListener;
this.params = params;
}
protected Map<String, String> getParams()
throws com.android.volley.AuthFailureError {
return params;
};
@Override
protected Response<JSONObject> parseNetworkResponse(NetworkResponse response) {
try {
String jsonString = new String(response.data,
HttpHeaderParser.parseCharset(response.headers));
return Response.success(new JSONObject(jsonString),
HttpHeaderParser.parseCacheHeaders(response));
} catch (UnsupportedEncodingException e) {
return Response.error(new ParseError(e));
} catch (JSONException je) {
return Response.error(new ParseError(je));
}
}
@Override
protected void deliverResponse(JSONObject response) {
// TODO Auto-generated method stub
listener.onResponse(response);
}
}
UPDATE QUESTION: I follow the pattern of one of the answers here in * and I came up with this implementation:
更新问题:我在*中遵循其中一个答案的模式,我想出了这个实现:
public class MultipartRequest extends Request<String> {
private MultipartEntity entity = new MultipartEntity();
private final Response.Listener<String> mListener;
private HashMap<String, String> mParams;
public MultipartRequest(String url, Response.ErrorListener errorListener, Response.Listener<String> listener)
{
super(Method.POST, url, errorListener);
mListener = listener;
buildMultipartEntity();
}
private void buildMultipartEntity()
{
entity.addPart("profile_picture", new FileBody(new File("/storage/emulated/0/Pictures/VSCOCam/2015-07-31 11.55.14 1.jpg")));
try
{
entity.addPart("user_id", new StringBody("15"));
entity.addPart("name", new StringBody("Bogs"));
entity.addPart("gender", new StringBody("Male"));
entity.addPart("date_birth", new StringBody("1999-12-5"));
entity.addPart("breed", new StringBody("monkey"));
}
catch (UnsupportedEncodingException e)
{
VolleyLog.e("UnsupportedEncodingException");
}
}
@Override
public String getBodyContentType()
{
return entity.getContentType().getValue();
}
@Override
public byte[] getBody() throws AuthFailureError
{
ByteArrayOutputStream bos = new ByteArrayOutputStream();
try
{
entity.writeTo(bos);
}
catch (IOException e)
{
VolleyLog.e("IOException writing to ByteArrayOutputStream");
}
return bos.toByteArray();
}
@Override
protected Response<String> parseNetworkResponse(NetworkResponse response)
{
return Response.success("Uploaded", getCacheEntry());
}
@Override
protected void deliverResponse(String response)
{
mListener.onResponse(response);
}
When I add this request to my request queue, it respond a com.android.volley.TimeoutError but if a check the data base, the request executes and add items to the table but the profile picture upload has only 1 byte of size. another problem, my database item added twice.
当我将此请求添加到我的请求队列时,它会响应com.android.volley.TimeoutError但是如果检查数据库,请求会执行并向表中添加项目,但是配置文件图片上载只有1个字节的大小。另一个问题,我的数据库项添加了两次。
PROBLEM SOLVED I already fixed this by setting its request time. what was happened is I am not able to get the response from my server after the default timeout of volley library so set my timeout by calling and setting this method to my Request Queue:
问题已解决我已经通过设置其请求时间来解决这个问题。发生的事情是我无法在凌空库的默认超时后从我的服务器获得响应,因此通过调用并将此方法设置为我的请求队列来设置我的超时:
multipartRequest.setRetryPolicy(new DefaultRetryPolicy(1000 * 60, DefaultRetryPolicy.DEFAULT_MAX_RETRIES,
DefaultRetryPolicy.DEFAULT_BACKOFF_MULT));
1 个解决方案
#1
8
I have commented but perhaps you haven't read yet. So here is my answer.
我评论过,但也许你还没有读过。所以这是我的答案。
If you want to use Volley, you can refer to some following links:
如果您想使用Volley,可以参考以下链接:
- Working POST Multipart Request with Volley and without HttpEntity
- 使用Volley和没有HttpEntity工作POST多部分请求
- How to send a “multipart/form-data” POST in Android with Volley
- 如何使用Volley在Android中发送“multipart / form-data”POST
- Trouble Sending Multipart File with Boundary via Volley
- 无法通过Volley发送带有边界的多部分文件
Hope this helps
希望这可以帮助
#1
8
I have commented but perhaps you haven't read yet. So here is my answer.
我评论过,但也许你还没有读过。所以这是我的答案。
If you want to use Volley, you can refer to some following links:
如果您想使用Volley,可以参考以下链接:
- Working POST Multipart Request with Volley and without HttpEntity
- 使用Volley和没有HttpEntity工作POST多部分请求
- How to send a “multipart/form-data” POST in Android with Volley
- 如何使用Volley在Android中发送“multipart / form-data”POST
- Trouble Sending Multipart File with Boundary via Volley
- 无法通过Volley发送带有边界的多部分文件
Hope this helps
希望这可以帮助