用J2ME的通用联网框架开发联网应用程序

void postViaHttpConnection(String url) throws IOException {

　HttpConnection c = null;

　InputStream is = null;

　OutputStream os = null;

　int rc;
　try {

c = (HttpConnection)Connector.open(url);
// Set the request method and headers

c.setRequestMethod(HttpConnection.POST);

c.setRequestProperty("If-Modified-Since","29 Oct 1999 19:43:31 GMT");

c.setRequestProperty("User-Agent","Profile/MIDP-2.0 Configuration/CLDC-1.0");

c.setRequestProperty("Content-Language", "en-US");
// Getting the output stream may flush the headers

os = c.openOutputStream();

os.write("LIST games\n".getBytes());

os.flush(); // Optional, getResponseCode will flush
// Getting the response code will open the connection,

// send the request, and read the HTTP response headers.

// The headers are stored until requested.

rc = c.getResponseCode();

if (rc != HttpConnection.HTTP_OK) {

　throw new IOException("HTTP response code: " + rc);

}
is = c.openInputStream();
// Get the ContentType

String type = c.getType();

processType(type);
// Get the length and process the data

int len = (int)c.getLength();

if (len > 0) {

　int actual = 0;

　int bytesread = 0 ;

　byte[] data = new byte[len];

　while ((bytesread != len) && (actual != -1)) {

actual = is.read(data, bytesread, len - bytesread);

bytesread += actual;

　}

　process(data);

　} else {

int ch;

while ((ch = is.read()) != -1) {

　process((byte)ch);

}

　}

} catch (ClassCastException e) {

　throw new IllegalArgumentException("Not an HTTP URL");

} finally {

　if (is != null)

is.close();

　if (os != null)

os.close();

　if (c != null)

c.close();

}

}