在J2ME程序裡用WMA發送和接收MMS(源碼)

Wireless Messaging API (JSR-120 or WMA) 允許訪問J2ME設備上的無線通訊資源來發送文本、二進制和MultiPart消息，MMS 屬於MultiPart消息.

下邊的例子代碼說明了如何在J2ME程序裡發送和接收MMS

public void sendMMS()
{
String appID = getAppProperty("MMS-ApplicationID");
String address = "mms://+5550000:" + appID;

MessageConnection mmsconn = null;

try
{
    /** 打開連接 */
    mmsconn = (MessageConnection) Connector.open(address);

    MultipartMessage mmmessage =(MultipartMessage) mmsconn.newMessage(
      MessageConnection.MULTIPART_MESSAGE);
    mmmessage.setAddress(address);

    MessagePart[] parts = getParts();

    for (int i = 0; i < parts.length; i++)
    {
      mmmessage.addMessagePart(parts[i]);
    }

    mmmessage.setSubject("MMS Text");
    mmsconn.send(mmmessage);
}
catch (Exception e) {
}

if (mmsconn != null)
{
    try
    {
      mmsconn.close();
    }
    catch (IOException ioe) {
    }
}
}

public MessagePart[] getParts()
{
// parts 是一個Vector對象，它包括Mulitpart 消息
MessagePart[] partsArray = new MessagePart[parts.size()];
parts.copyInto(partsArray);
return partsArray;
}

public void addPart()
{
Vector parts = new Vector();
int counter = 0;
MessagePart mpart;

/*這裡添加文本*/
String mimeType = "text/plain";
String encoding = "UTF-8";
String text = "Hello";
byte[] contents = text.getBytes(encoding);
mpart = new MessagePart(contents, 0, contents.length, mimeType, "id" +
    counter, "contentLocation", encoding);

counter ++;

/*這裡添加圖像*/
String mimeType = "image/png";
String image = "/hello.png";
InputStream is = getClass().getResourceAsStream(image);
byte[] contents = new byte[is.available()];
is.read(contents);
mpart = new MessagePart(contents, 0, contents.length,mimeType, "id" +
    counter,"contentLocation", null);
parts.addElement(mpart);
counter ++;
}

public void run()
{
String mmsConnection = "mms://:" + appID;
try
{
    mmsconn = (MessageConnection) Connector.open(mmsConnection);
    mmsconn.setMessageListener(this);
}
catch (IOException ioe) {
}
try
{
    Message msg = mmsconn.receive();
    if (msg != null)
    {
      String senderAddress = msg.getAddress();
      String title = senderAddress.substring(6);
      if (msg instanceof MultipartMessage)
      {
        MultipartMessage mpm = (MultipartMessage)msg;
        String subject = mpm.getSubject();
        String date = mpm.getTimestamp().toString();
        MessagePart[] parts = mpm.getMessageParts();
        if (parts != null)
        {
          for (int i = 0; i < parts.length; i++)
          {
            MessagePart mp = parts[i];
            String mimeType = mp.getMIMEType();
            String contentLocation = mp.getContentLocation();
            byte[] ba = mp.getContent();
            try
            {
Image image = Image.createImage(ba, 0, ba.length);
            }
            catch (IllegalArgumentException iae)
            {}
          }
        }
      }
    }
}
catch (IOException e) {
}
}