멀티파트

volley_mulitypart

package com.startuphouse.wallposter.network;

import com.android.volley.AuthFailureError;
import com.android.volley.NetworkResponse;
import com.android.volley.Request;
import com.android.volley.Response;
import com.android.volley.VolleyLog;
import com.startuphouse.wallposter.network.listener.UploadListener;

import org.apache.http.HttpEntity;
import org.apache.http.entity.ContentType;
import org.apache.http.entity.mime.MultipartEntityBuilder;
import org.apache.http.entity.mime.content.FileBody;

import java.io.ByteArrayOutputStream;
import java.io.File;
import java.io.IOException;
import java.util.ArrayList;

/**
 * Created by moltak on 12/28/13.
 */
public class MultipartRequest extends Request<String> {
    private final String PARAM_TITLE = "title", PARAM_CONTENT = "content";
    private final String PARAM_UPFILE[] = {"upfile", "upfile2", "upfile3", "upfile4"};

    private HttpEntity httpEntity;
    private String title, contents;
    private ArrayList<String> images;
    private Response.Listener<String> listener;

    public MultipartRequest(String title, String contents, ArrayList<String> images, String url, UploadListener listener) {
        super(Method.POST, url, listener);

        this.title = title;
        this.contents = contents;
        this.images = images;
        this.listener = listener;

        buildMultipartEntity();
    }

    private void buildMultipartEntity() {
        MultipartEntityBuilder entityBuilder = MultipartEntityBuilder.create();
        entityBuilder.addTextBody(PARAM_TITLE, title,
                ContentType.create(ContentType.TEXT_PLAIN.getMimeType(), "utf-8"));
        entityBuilder.addTextBody(PARAM_CONTENT, contents,
                ContentType.create(ContentType.TEXT_PLAIN.getMimeType(), "utf-8"));

        for(int i = 0; i < images.size(); i ++) {
            entityBuilder.addPart(PARAM_UPFILE[i], new FileBody(new File(images.get(i))));
        }

        httpEntity = entityBuilder.build();
    }


    @Override
    protected Response<String> parseNetworkResponse(NetworkResponse response) {
        return Response.success(new String(response.data), getCacheEntry());
    }

    @Override
    protected void deliverResponse(String response) {
        listener.onResponse(response);
    }

    @Override
    public byte[] getBody() throws AuthFailureError {
        ByteArrayOutputStream bos = new ByteArrayOutputStream();
        try {
            httpEntity.writeTo(bos);
        }
        catch (IOException e) {
            VolleyLog.e("IOException writing to ByteArrayOutputStream");
        }
        return bos.toByteArray();
    }

    @Override
    public String getBodyContentType() {
        String contentType = httpEntity.getContentType().getValue();
        return contentType;
    }
}