J2ME post方式上传文件

public void upload() {
　　String name = po.getName(); // file name

　　String str = po.getStr()+"/plugins/j2me"; // url

　　byte[] raw = snap.getData(); // file data

　　String cmd = "uploadpic";

　　String auth = po.getUserId();

　　String albumId = po.getUserId();

　　String type = po.getType();

　　String remarks = po.getDemo();

　　String[] props = { "cmd","auth","albumId", "public", "remarks" }; //property name

　　String[] values = { cmd, auth, albumId, type, remarks }; // property value

　　try {

　　String BOUNDARY = "---------7d4a6d158c9"; // separate line

　　String MULTIPART_FORM_DATA = "multipart/form-data";

　　StringBuffer sb = new StringBuffer();

　　for (int i = 0; i < props.length; i++) { // send each property

　　sb = sb.append("--");

　　sb = sb.append(BOUNDARY);

　　sb = sb.append("\r\n");

　　sb = sb.append("Content-Disposition: form-data; name=\""+ props[i] + "\"\r\n\r\n");

　　sb = sb.append(URLEncoder.encode(values[i],"UTF-8"));

　　sb = sb.append("\r\n");

　　}

　　sb = sb.append("--");

　　sb = sb.append(BOUNDARY);

　　sb = sb.append("\r\n");

　　sb = sb.append("Content-Disposition: form-data;name=\"file\";filename=\""+ name + ".jpg\"\r\n");

　　sb = sb.append("Content-Type: application/octet-stream\r\n\r\n");

　　byte[] data = sb.toString().getBytes();

　　byte[] end_data = ("\r\n--" + BOUNDARY + "--\r\n").getBytes();

　　HttpConnection hc = (HttpConnection) Connector.open(str,Connector.READ_WRITE); // set HTTP head:

　　hc.setRequestProperty("Content-Type", MULTIPART_FORM_DATA + "; boundary=" + BOUNDARY);

　　hc.setRequestProperty("Content-Length", String.valueOf(data.length+ raw.length + end_data.length)); //

　　//        hc.setRequestProperty("Connection", "keep-alive");

　　hc.setRequestMethod(HttpConnection.POST); // out: OutputStream                                            //

　　output =hc.openOutputStream();

　　output.write(data);

　　output.write(raw, 0, raw.length);

　　output.write(end_data);

　　int cah = hc.getResponseCode();

　　if (cah != HttpConnection.HTTP_OK) {

　　System.out.println(cah);

　　return;

　　}

　　output.close();

　　//receive(hc);

　　hc.close();

　　} catch (IOException e) {

　　} catch (SecurityException e) {

　　} catch (NullPointerException e) {

　　}

　　}