安卓之上传文件，即HTTP提交表单

获取文件：

    public void Init()

    {

        noScrollgridview = (GridView) findViewById(R.id.noScrollgridview);

        noScrollgridview.setSelector(new ColorDrawable(Color.TRANSPARENT));

        adapter = new GridAdapter(this);

        adapter.update1();

        noScrollgridview.setAdapter(adapter);

        noScrollgridview.setOnItemClickListener(new OnItemClickListener()

        {

            public void onItemClick(AdapterView<?> arg0, View arg1, int arg2,

                    long arg3)

            {

                InputMethodManager imm = ( InputMethodManager ) arg1.getContext( ).getSystemService( Context.INPUT_METHOD_SERVICE );   

                 imm.hideSoftInputFromWindow( arg1.getApplicationWindowToken( ) , 0 );   

                if (arg2 == Bimp.bmp.size())

                {

                    new PopupWindows(PublishedActivity.this, noScrollgridview);

                } 

                else

                    Intent intent = new Intent(PublishedActivity.this,

                            PhotoActivity.class);

                    intent.putExtra("ID", arg2);

                    startActivity(intent);

                }

            }

        });

        activity_selectimg_send = (Button) findViewById(R.id.activity_selectimg_send);

        activity_selectimg_send.setOnClickListener(new OnClickListener() {

            public void onClick(View v) {

        //showDialog("ddd");

        StrictMode.setThreadPolicy(new StrictMode.ThreadPolicy.Builder()

        .permitNetwork().build());

        List<String> list = new ArrayList<String>();

        for (int i = 0; i < Bimp.drr.size(); i++)

            String Str = Bimp.drr.get(i).substring(

                    Bimp.drr.get(i).lastIndexOf("/") + 1,

                    Bimp.drr.get(i).lastIndexOf("."));

            list.add(FileUtils.SDPATH + Str + ".JPEG");

            String path = Bimp.drr.get(i);

//            showDialog(path);

//            showDialog(getDataValue("_member_id"));

//            showDialog(((TextView) findViewById(R.id.activity_selectxxx_send)).getText().toString());

            String fileKey = "imgFile";  

                   UploadUtil uploadUtil = UploadUtil.getInstance();;  

                  uploadUtil.setOnUploadProcessListener(PublishedActivity.this);  //设置监听器监听上传状态  

                   Map<String, String> params = new HashMap<String, String>();  

                   params.put("userid", getDataValue("_member_id"));  

                   params.put("content", ((TextView) findViewById(R.id.activity_selectxxx_send)).getText().toString());  

            //String x = ((TextView)v.findViewById(R.id.activity_selectxxx_send)).getText().toString();

            //uploadFile(path);

        }

        // 高清的压缩图片全部就在 list 路径里面了

        // 高清的压缩过的 bmp 对象 都在 Bimp.bmp里面

        // 完成上传服务器后 .........

        showDialog("发布成功^_^");

        FileUtils.deleteDir();

//        Intent intent = new Intent(PublishedActivity.this, MainActivity.class);

//        Bundle bundle = new Bundle();  

//        /*字符、字符串、布尔、字节数组、浮点数等等，都可以传*/  

//        bundle.putString("Name", "feng88724");  

//        /*把bundle对象assign给Intent*/  

//        

//        intent.setClass(PublishedActivity.this, MainActivity.class);

//        intent.putExtras(bundle);  

//        startActivity(intent);

        Intent intentx = new Intent(PublishedActivity.this, MainActivity.class);  

        /* 通过Bundle对象存储需要传递的数据 */  

        Bundle bundle = new Bundle();  

        /*字符、字符串、布尔、字节数组、浮点数等等，都可以传*/  

        bundle.putString("Name", "feng88724");  

        /*把bundle对象assign给Intent*/  

        intentx.putExtras(bundle);  

        startActivity(intentx);  

        }});

    }

上传文件

private void toUploadFile(File file, String fileKey, String RequestURL,

        Map<String, String> param) {

    String result = null;

    requestTime= 0;

    long requestTime = System.currentTimeMillis();

    long responseTime = 0;

    try {

        URL url = new URL(RequestURL);

        HttpURLConnection conn = (HttpURLConnection) url.openConnection();

        conn.setReadTimeout(readTimeOut);

        conn.setConnectTimeout(connectTimeout);

        conn.setDoInput(true); // 允许输入流

        conn.setDoOutput(true); // 允许输出流

        conn.setUseCaches(false); // 不允许使用缓存

        conn.setRequestMethod("POST"); // 请求方式

        conn.setRequestProperty("Charset", CHARSET); // 设置编码

        conn.setRequestProperty("connection", "keep-alive");

        conn.setRequestProperty("user-agent", "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1)");

        conn.setRequestProperty("Content-Type", CONTENT_TYPE + ";boundary=" + BOUNDARY);

        //conn.setRequestProperty("Content-Type", "application/x-www-form-urlencoded");

        /**

         * 当文件不为空，把文件包装并且上传

         */

        DataOutputStream dos = new DataOutputStream(conn.getOutputStream());

        StringBuffer sb = null;

        String params = "";

        /***

         * 以下是用于上传参数

        if (param != null && param.size() > 0) {

            Iterator<String> it = param.keySet().iterator();

            while (it.hasNext()) {

                sb = null;

                sb = new StringBuffer();

                String key = it.next();

                String value = param.get(key);

                sb.append(PREFIX).append(BOUNDARY).append(LINE_END);

                sb.append("Content-Disposition: form-data; name=\"").append(key).append("\"").append(LINE_END).append(LINE_END);

                sb.append(value).append(LINE_END);

                params = sb.toString();

                Log.i(TAG, key+"="+params+"##");

                dos.write(params.getBytes());

                //dos.flush();

        sb = null;

        params = null;

        sb = new StringBuffer();

         * 这里重点注意： name里面的值为服务器端需要key 只有这个key 才可以得到对应的文件

         * filename是文件的名字，包含后缀名的 比如:abc.png

        sb.append(PREFIX).append(BOUNDARY).append(LINE_END);

        sb.append("Content-Disposition:form-data; name=\"" + fileKey

                + "\"; filename=\"" + file.getName() + "\"" + LINE_END);

        sb.append("Content-Type:image/pjpeg" + LINE_END); // 这里配置的Content-type很重要的 ，用于服务器端辨别文件的类型的

        sb.append(LINE_END);

        params = sb.toString();

        Log.i(TAG, file.getName()+"=" + params+"##");

        dos.write(params.getBytes());

        /**上传文件*/

        InputStream is = new FileInputStream(file);

        onUploadProcessListener.initUpload((int)file.length());

        byte[] bytes = new byte[1024];

        int len = 0;

        int curLen = 0;

        while ((len = is.read(bytes)) != -1) {

            curLen += len;

            dos.write(bytes, 0, len);

            onUploadProcessListener.onUploadProcess(curLen);

        is.close();

        dos.write(LINE_END.getBytes());

        byte[] end_data = (PREFIX + BOUNDARY + PREFIX + LINE_END).getBytes();

        dos.write(end_data);

        dos.flush();

        //dos.write(tempOutputStream.toByteArray());

         * 获取响应码 200=成功 当响应成功，获取响应的流

        int res = conn.getResponseCode();

        responseTime = System.currentTimeMillis();

        this.requestTime = (int) ((responseTime-requestTime)/1000);

        Log.e(TAG, "response code:" + res);

        if (res == 200) {

            Log.e(TAG, "request success");

            InputStream input = conn.getInputStream();

            StringBuffer sb1 = new StringBuffer();

            int ss;

            while ((ss = input.read()) != -1) {

                sb1.append((char) ss);

            result = sb1.toString();

            Log.e(TAG, "result : " + result);

            sendMessage(UPLOAD_SUCCESS_CODE, "上传结果："

                    + result);

            return;

        } else {

            Log.e(TAG, "request error");

            sendMessage(UPLOAD_SERVER_ERROR_CODE,"上传失败：code=" + res);

    } catch (MalformedURLException e) {

        sendMessage(UPLOAD_SERVER_ERROR_CODE,"上传失败：error=" + e.getMessage());

        e.printStackTrace();

        return;

    } catch (IOException e) {

}

本文转自最课程陆敏技博客园博客，原文链接：http://www.cnblogs.com/luminji/p/4603630.html，如需转载请自行联系原作者