Android 使用volley上传图片、多张图片

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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: yanzi1225627@163.com * @version 创建时间: 2015-08-09 下午4:32 */public class MultipartRequest extends Request<String>{    private MultipartEntity entity = new MultipartEntity();    private  Response.Listener<String> mListener;    private List<File> mFileParts;    private String mFilePartName;    private Map<String, 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<String> listener, Response.ErrorListener errorListener,                            String filePartName, File file, Map<String, String> params){        super(Method.POST, url, errorListener);        mFileParts = new ArrayList<File>();        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<String> listener,Response.ErrorListener errorListener                            , String filePartName,List<File> files, Map<String, String> params) {        super(Method.POST, url, errorListener);        mFilePartName = filePartName;        mListener = listener;        mFileParts = files;        mParams = params;        buildMultipartEntity();    }    @Override    protected Response<String> 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, String> getHeaders() throws AuthFailureError {        Map<String, String> headers = super.getHeaders();        if (headers == null || headers.equals(Collections.emptyMap())) {            headers = new HashMap<String, 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, 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, String> params = new HashMap<String, 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<File> f = new ArrayList<File>();      f.add(f1);//    f.add(f2);      MultipartRequest request = new MultipartRequest(url, new Response.Listener<String>() {         @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

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