Android 使用volley上传图片、多张图片

     使用volley请求数据很简便，但遇到上传文件就麻烦那可不好，同时使用多个网络请求类库也是不太建议的。所以这里就给出了一种解决方法，也要借助一个jar包，这里用到的是httpmime(点击下载)，主要用到的是MultipartEntity类，可以对请求参数进行封装。

主要是继承volley的Request类，然后通过使用httpmim的MultipartEntity类对文件参数进行封装，这里实现了一个参数名对应一个文件，

一个参数名对应多个文件，如果还要多个参数名对应多个文件可以自己试着实现一下哈

package com.hrtac.testupload;

import android.util.Log;

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.android.volley.toolbox.HttpHeaderParser;

import org.apache.http.entity.mime.MultipartEntity;
import org.apache.http.entity.mime.content.FileBody;
import org.apache.http.entity.mime.content.StringBody;

import java.io.ByteArrayOutputStream;
import java.io.File;
import java.io.IOException;
import java.io.UnsupportedEncodingException;
import java.nio.charset.Charset;
import java.util.ArrayList;
import java.util.Collections;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

/**
 * 功能：
 *
 * @author yanzi E-mail: [email protected]
 * @version 创建时间: 2015-08-09 下午4:32
 */
public class MultipartRequest extends Request{

    private MultipartEntity entity = new MultipartEntity();

    private  Response.Listener mListener;

    private List mFileParts;
    private String mFilePartName;
    private Map, String> mParams;

    /**
     * 单个文件＋参数 上传
     * @param url
     * @param listener
     * @param errorListener
     * @param filePartName
     * @param file
     * @param params
     */
    public MultipartRequest(String url, Response.Listener listener, Response.ErrorListener errorListener,
                            String filePartName, File file, Map, String> params){
        super(Method.POST, url, errorListener);
        mFileParts = new ArrayList();
        if(file != null && file.exists()){
            mFileParts.add(file);
        }else{
            VolleyLog.e("MultipartRequest---file not found");
        }
        mFilePartName = filePartName;
        mListener = listener;
        mParams = params;
        buildMultipartEntity();

    }

    /**
     * 多个文件＋参数上传
     * @param url
     * @param listener
     * @param errorListener
     * @param filePartName
     * @param files
     * @param params
     */
    public MultipartRequest(String url,Response.Listener listener,Response.ErrorListener errorListener
                            , String filePartName,List files, Map, String> params) {
        super(Method.POST, url, errorListener);
        mFilePartName = filePartName;
        mListener = listener;
        mFileParts = files;
        mParams = params;
        buildMultipartEntity();
    }

    @Override
    protected Response parseNetworkResponse(NetworkResponse response) {
        String parsed;
        try {
            parsed = new String(response.data,
                    HttpHeaderParser.parseCharset(response.headers));
        } catch (UnsupportedEncodingException e) {
            parsed = new String(response.data);
        }
        return Response.success(parsed,
                HttpHeaderParser.parseCacheHeaders(response));
    }

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

    @Override
    public Map, String> getHeaders() throws AuthFailureError {
        Map, String> headers = super.getHeaders();

        if (headers == null || headers.equals(Collections.emptyMap())) {
            headers = new HashMap, String>();
        }
        return headers;
    }

    @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();
    }

    private void buildMultipartEntity() {
        if (mFileParts != null && mFileParts.size() > 0) {
            for (File file : mFileParts) {
                entity.addPart(mFilePartName, new FileBody(file));
            }
            long l = entity.getContentLength();
            Log.i("YanZi-volley", mFileParts.size() + "个，长度：" + l);
        }

        try {
            if (mParams != null && mParams.size() > 0) {
                for (Map.Entry, String> entry : mParams.entrySet()) {
                    entity.addPart(
                            entry.getKey(),
                            new StringBody(entry.getValue(), Charset
                                    .forName("UTF-8")));
                }
            }
        } catch (UnsupportedEncodingException e) {
            VolleyLog.e("UnsupportedEncodingException");
        }
    }
}


 

compile files('libs/volley.jar')
compile files('libs/httpcore-4.3.2.jar')
compile files('libs/httpclient-4.3.5.jar')
compile files('libs/httpmime-4.3.5.jar')

private void doUploadTest(){

      mSingleQueue = Volley.newRequestQueue(getApplicationContext());
      String path = picPath;
      Log.e("zb","picPath="+picPath);
      String url = "http://app.sod90.com/xxx/upload/app_upload"; //换成自己的测试url地址
      Map, String> params = new HashMap, String>();
      params.put("id", "19");
      params.put("type", "shop");
      Log.e("zb","params="+params);
      File f1 = new File(path);
      Log.e("zb","f1="+f1.toString());
//    File f2 = new File(path);
//    Log.e("zb","f2="+f2.toString());
      
      if(!f1.exists()){
         Toast.makeText(getApplicationContext(), "图片不存在，测试无效", Toast.LENGTH_SHORT).show();
         return;
      }
      List f = new ArrayList();
      f.add(f1);
//    f.add(f2);
      MultipartRequest request = new MultipartRequest(url, new Response.Listener() {

         @Override
         public void onResponse(String response) {
            Toast.makeText(getApplicationContext(), "uploadSuccess,response = " + response, Toast.LENGTH_SHORT).show();
            Log.e("zb", "success,response = " + response);
         }
      }, new ErrorListener() {

         @Override
         public void onErrorResponse(VolleyError error) {
            Toast.makeText(getApplicationContext(), "uploadError,response = " + error.getMessage(), Toast.LENGTH_SHORT).show();
            Log.e("zb", "error,response = " + error.getMessage());
         }
      }, "f_file[]", f, params); //注意这个key必须是f_file[],后面的[]不能少
      mSingleQueue.add(request);
   }

通过这个请求就可以上传多文件了，也不做多解释，代码也比较简单。我也对这种方法测试过了，但是由于是和服务器进行打交道，这里确实没有什么可以展示出来，不过我还是喜欢有说服力的描述，所谓有图有真相哈哈，上两个图在做解释