最近项目中要用优化文件上传操作,因此对Android端文件上传做下总结。测试服务器端就用PHP写了,比较简单,代码如下:
- <?php
- $base_path = "./uploads/";
- $target_path = $base_path . basename ( $_FILES ['uploadfile'] ['name'] );
- if (move_uploaded_file ( $_FILES ['uploadfile'] ['tmp_name'], $target_path )) {
- $array = array ("code" => "1", "message" => $_FILES ['uploadfile'] ['name'] );
- echo json_encode ( $array );
- } else {
- $array = array ("code" => "0", "message" => "There was an error uploading the file, please try again!" . $_FILES ['uploadfile'] ['error'] );
- echo json_encode ( $array );
- }
- ?>
我主要写了三种上传:人造POST请求、httpclient4(需要httpmime-4.1.3.jar)、AsyncHttpClient(对appache的HttpClient进行了进一步封装,了解更多...),当然为了并列起来看比较方便,前两种上传我直接写在主线程了,不知道对速度测试有没有影响,老鸟看到请给予批评指正,嘿嘿,下面上代码:
- package com.example.fileupload;
-
- import java.io.BufferedReader;
- import java.io.DataOutputStream;
- import java.io.File;
- import java.io.FileInputStream;
- import java.io.FileNotFoundException;
- import java.io.IOException;
- import java.io.InputStream;
- import java.io.InputStreamReader;
- import java.net.HttpURLConnection;
- import java.net.URL;
-
- import org.apache.http.HttpEntity;
- import org.apache.http.HttpResponse;
- import org.apache.http.HttpVersion;
- import org.apache.http.client.ClientProtocolException;
- import org.apache.http.client.HttpClient;
- import org.apache.http.client.methods.HttpPost;
- import org.apache.http.entity.mime.MultipartEntity;
- import org.apache.http.entity.mime.content.FileBody;
- import org.apache.http.impl.client.DefaultHttpClient;
- import org.apache.http.params.CoreProtocolPNames;
- import org.apache.http.util.EntityUtils;
-
- import android.app.Activity;
- import android.os.Bundle;
- import android.util.Log;
- import android.view.View;
- import android.view.View.OnClickListener;
- import android.widget.Button;
-
- import com.loopj.android.http.AsyncHttpClient;
- import com.loopj.android.http.AsyncHttpResponseHandler;
- import com.loopj.android.http.RequestParams;
-
- public class UploadActivity extends Activity implements OnClickListener {
- private final String TAG = "UploadActivity";
-
- private static final String path = "/mnt/sdcard/Desert.jpg";
- private String uploadUrl = "http://192.168.1.102:8080/Android/testupload.php";
- private Button btnAsync, btnHttpClient, btnCommonPost;
- private AsyncHttpClient client;
-
- @Override
- protected void onCreate(Bundle savedInstanceState) {
- super.onCreate(savedInstanceState);
- setContentView(R.layout.activity_upload);
- initView();
- client = new AsyncHttpClient();
- }
-
- private void initView() {
- btnCommonPost = (Button) findViewById(R.id.button1);
- btnHttpClient = (Button) findViewById(R.id.button2);
- btnAsync = (Button) findViewById(R.id.button3);
- btnCommonPost.setOnClickListener(this);
- btnHttpClient.setOnClickListener(this);
- btnAsync.setOnClickListener(this);
- }
-
- @Override
- public void onClick(View v) {
- long startTime = System.currentTimeMillis();
- String tag = null;
- try {
- switch (v.getId()) {
- case R.id.button1:
- upLoadByCommonPost();
- tag = "CommonPost====>";
- break;
- case R.id.button2:
- upLoadByHttpClient4();
- tag = "HttpClient====>";
- break;
- case R.id.button3:
- upLoadByAsyncHttpClient();
- tag = "AsyncHttpClient====>";
- break;
- default:
- break;
- }
- } catch (Exception e) {
- e.printStackTrace();
-
- }
- Log.i(TAG, tag + "wasteTime = "
- + (System.currentTimeMillis() - startTime));
- }
-
-
- private void upLoadByCommonPost() throws IOException {
- String end = "\r\n";
- String twoHyphens = "--";
- String boundary = "******";
- URL url = new URL(uploadUrl);
- HttpURLConnection httpURLConnection = (HttpURLConnection) url
- .openConnection();
- httpURLConnection.setChunkedStreamingMode(128 * 1024);
-
- httpURLConnection.setDoInput(true);
- httpURLConnection.setDoOutput(true);
- httpURLConnection.setUseCaches(false);
-
- httpURLConnection.setRequestMethod("POST");
- httpURLConnection.setRequestProperty("Connection", "Keep-Alive");
- httpURLConnection.setRequestProperty("Charset", "UTF-8");
- httpURLConnection.setRequestProperty("Content-Type",
- "multipart/form-data;boundary=" + boundary);
-
- DataOutputStream dos = new DataOutputStream(
- httpURLConnection.getOutputStream());
- dos.writeBytes(twoHyphens + boundary + end);
- dos.writeBytes("Content-Disposition: form-data; name=\"uploadfile\"; filename=\""
- + path.substring(path.lastIndexOf("/") + 1) + "\"" + end);
- dos.writeBytes(end);
-
- FileInputStream fis = new FileInputStream(path);
- byte[] buffer = new byte[8192];
- int count = 0;
-
- while ((count = fis.read(buffer)) != -1) {
- dos.write(buffer, 0, count);
- }
- fis.close();
- dos.writeBytes(end);
- dos.writeBytes(twoHyphens + boundary + twoHyphens + end);
- dos.flush();
- InputStream is = httpURLConnection.getInputStream();
- InputStreamReader isr = new InputStreamReader(is, "utf-8");
- BufferedReader br = new BufferedReader(isr);
- String result = br.readLine();
- Log.i(TAG, result);
- dos.close();
- is.close();
- }
-
-
- private void upLoadByHttpClient4() throws ClientProtocolException,
- IOException {
- HttpClient httpclient = new DefaultHttpClient();
- httpclient.getParams().setParameter(
- CoreProtocolPNames.PROTOCOL_VERSION, HttpVersion.HTTP_1_1);
- HttpPost httppost = new HttpPost(uploadUrl);
- File file = new File(path);
- MultipartEntity entity = new MultipartEntity();
- FileBody fileBody = new FileBody(file);
- entity.addPart("uploadfile", fileBody);
- httppost.setEntity(entity);
- HttpResponse response = httpclient.execute(httppost);
- HttpEntity resEntity = response.getEntity();
- if (resEntity != null) {
- Log.i(TAG, EntityUtils.toString(resEntity));
- }
- if (resEntity != null) {
- resEntity.consumeContent();
- }
- httpclient.getConnectionManager().shutdown();
- }
-
-
- private void upLoadByAsyncHttpClient() throws FileNotFoundException {
- RequestParams params = new RequestParams();
- params.put("uploadfile", new File(path));
- client.post(uploadUrl, params, new AsyncHttpResponseHandler() {
- @Override
- public void onSuccess(int arg0, String arg1) {
- super.onSuccess(arg0, arg1);
- Log.i(TAG, arg1);
- }
- });
- }
-
- }
Andriod被我们熟知的上传就是由appache提供给的httpclient4了,毕竟比较简单,腾讯微博什么的sdk也都是这么做的,大家可以参考:
- public String httpPostWithFile(String url, String queryString, List<NameValuePair> files) throws Exception {
-
- String responseData = null;
-
- URI tmpUri=new URI(url);
- URI uri = URIUtils.createURI(tmpUri.getScheme(), tmpUri.getHost(), tmpUri.getPort(), tmpUri.getPath(),
- queryString, null);
- Log.i(TAG, "QHttpClient httpPostWithFile [1] uri = "+uri.toURL());
-
-
- MultipartEntity mpEntity = new MultipartEntity();
- HttpPost httpPost = new HttpPost(uri);
- StringBody stringBody;
- FileBody fileBody;
- File targetFile;
- String filePath;
- FormBodyPart fbp;
-
- List<NameValuePair> queryParamList=QStrOperate.getQueryParamsList(queryString);
- for(NameValuePair queryParam:queryParamList){
- stringBody=new StringBody(queryParam.getValue(),Charset.forName("UTF-8"));
- fbp= new FormBodyPart(queryParam.getName(), stringBody);
- mpEntity.addPart(fbp);
- }
-
- for (NameValuePair param : files) {
- filePath = param.getValue();
- targetFile= new File(filePath);
- fileBody = new FileBody(targetFile,"application/octet-stream");
- fbp= new FormBodyPart(param.getName(), fileBody);
- mpEntity.addPart(fbp);
-
- }
-
-
- httpPost.setEntity(mpEntity);
-
- try {
- HttpResponse response=httpClient.execute(httpPost);
- Log.i(TAG, "QHttpClient httpPostWithFile [2] StatusLine = "+response.getStatusLine());
- responseData =EntityUtils.toString(response.getEntity());
- } catch (Exception e) {
- e.printStackTrace();
- }finally{
- httpPost.abort();
- }
- Log.i(TAG, "QHttpClient httpPostWithFile [3] responseData = "+responseData);
- return responseData;
- }
很明显,开源框架的写法最简单有效,而且为异步的,提供出Handler进行结果返回,普通人造post代码量最大,上传速度大家也可以测一下,我附一张图,我上传的图片850kb左右
总体看来,代码量最多的写法可能上传速度好点儿,asyncHttpClient的上传方式速度也很理想,主要是用起来简单。
有时可能还会有上传进度返回的需求,第一种流的读写方式应该很简单解决,后两种可能还得下点儿功夫研究研究,有兴趣的朋友可以一块儿交流研究。
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