Networking ME is a networking library for Java ME platform. It's built on top of Generic Connection Framework and other foundation technologies. It has a modular architecture with well-designed, feature-rich APIs that are easy to use.
- Download latest version package.
- Add the library jar file (networkingme-vX.jar) to your project's libraries.
- Read this Wiki page, Javadoc, study the example usages below and samples.
- Any doubt, post a message in the Forum.
- MIDP 2.0 / CLDC 1.0
Networking ME is available under the MIT license.
See below a list of all updates and what they consist of:
| Version | Date | Contents |
|---|---|---|
| 1.1 | 11/19/2013 | 1. Listener classes for CSV, XML JSON and LWUIT Image content formats. 2. URLLabel and URLButton LWUIT components. |
| 1.0 | 07/12/2013 | 1. Initial release. |
See below a list of all main components and what they are for:
| Component | Description |
|---|---|
| HttpRequest | This is the class used to create HTTP request. |
| HttpResponse | This is the class that represents a response from a HTTP request. |
| RequestOperation | This is the class responsible for running a request asynchronously and delivery the response. |
| RequestOperation.Listener | This is the interface that represents a listener to events that are triggered during a request execution. |
| TextListener | This is the listener class to request events that has a utility method to easy delivery the request's result as string. |
| BinaryListener | This is the listener class to request events that has a utility method to easy delivery the request's result as bytes. |
| ImageListener | This is the listener class to request events that has a utility method to easy delivery the request's result as a LCDUI image. |
| CSVListener | This is the listener class to request events that has a utility method to easy delivery the request's result as CSV. |
| SAXListener | This is the listener class to request events that has a utility method to easy delivery the request's result as SAX XML handler. |
| JSONListener | This is the listener class to request events that has a utility method to easy delivery the request's result as JSON object. |
| ImageListener (LWUIT) | This is the listener class to request events that has a utility method to easy delivery the request's result as a LWUIT image. |
| HttpClient | This is the class that implements the common patterns of communicating with an web application over HTTP. |
| URLImageItem | This is a custom item class that loads an image from an URL and displays it in a LCDUI Form. |
| URLLabel | This is a LWUIT custom Label class that loads an image from an URL and displays it in a LWUIT Form. |
| URLButton | This is a LWUIT custom Button class that loads an image from an URL and displays it in a LWUIT Form. |
See below a list of some code snippets representing the most common usages:
- Basic HTTP Request
...
URL url = new URL("http://www.emobtech.com");
HttpRequest req = new HttpRequest(url);
//
RequestOperation oper = new RequestOperation(req);
oper.start(new TextListener() {
public void onText(String text) {
System.out.println("onText: " + text);
}
public void onFailure(Request request, RequestException exception) {
System.out.println("onFailure: " + exception.getMessage());
}
});
...- Download an Image (LCDUI and LWUIT)
...
URL url = new URL("http://www.emobtech.com/images/logo.png");
HttpRequest req = new HttpRequest(url);
//
RequestOperation oper = new RequestOperation(req);
oper.start(new ImageListener() {
public void onImage(Image image) {
form.append(image);
}
...
});
...- Download a JSON Format Content
...
URL url = new URL("http://www.emobtech.com/json/file.json");
HttpRequest req = new HttpRequest(url);
//
RequestOperation oper = new RequestOperation(req);
oper.start(new JSONListener() {
public void onJSON(JSONObject jsonObject) {
String value = jsonObject.get("key");
}
...
});
...- Download a XML Format Content
...
URL url = new URL("http://www.emobtech.com/xml/file.xml");
HttpRequest req = new HttpRequest(url);
//
RequestOperation oper = new RequestOperation(req);
oper.start(new SAXListener(new UserHandler()) {
public void onSAX(DefaultHandler handler) {
User[] users = ((UserHandler)handler).getParsedUsers();
}
...
});
...- Download a CSV Format Content
...
URL url = new URL("http://www.emobtech.com/csv/file.csv");
HttpRequest req = new HttpRequest(url);
//
RequestOperation oper = new RequestOperation(req);
oper.start(new CSVListener() {
public void onCSV(String[][] csv) {
String name = csv[0][1];
String email = csv[0][2];
}
...
});
...- POST HTTP Request
...
URL url = new URL("http://www.emobtech.com/post.php");
HttpRequest req = new HttpRequest(url, HttpRequest.Method.POST);
//
WebFormBody form = new WebFormBody();
form.addField("name", "eMob Tech");
form.addField("twitter", "@emobtech");
//
req.setBody(body);
//
RequestOperation oper = new RequestOperation(req);
oper.start(...);
...- POST Binary Data
...
URL url = new URL("http://www.emobtech.com/post_file.php");
HttpRequest req = new HttpRequest(url, HttpRequest.Method.POST);
//
MultipartBody form = new MultipartBody();
form.addPart("file", "notes.txt", "text/plain", "Networking ME library rocks!!!".getBytes());
//
req.setBody(body);
//
RequestOperation oper = new RequestOperation(req);
oper.start(...);
...- Header and Cookies
...
HttpRequest req = new HttpRequest(url);
req.setHeader(HttpRequest.Header.USER_AGENT, "MyApp/1.0 (JavaME; MIDP2; CLDC1)");
req.addCookie(new Cookie("name", "value"));
...- Access REST services with HttpClient
...
URL urlBase = new URL("http://www.emobtech.com/rest");
HttpClient httpClient = new HttpClient(url);
//
httpClient.get("/friends.json", new TextListener() {
public void onText(String text) {
System.out.println("JSON: " + text);
}
...
});
...- HttpClient to Post Data
...
URL urlBase = new URL("http://www.emobtech.com/rest");
HttpClient httpClient = new HttpClient(url);
//
Hashtable params = new Hashtable();
params.put("first_name", "Ernandes");
params.put("email", "ernandes@emobtech.com");
params.put("twitter", "ernandesmjr");
//
httpClient.postForm("/new_friend.json", params, new TextListener() {
...
});
...- HttpClient to Upload File
...
URL urlBase = new URL("http://www.emobtech.com/rest");
HttpClient httpClient = new HttpClient(url);
//
bytes[] pictureBytes = ...;
//
httpClient.uploadFile(
"/set_friend_picture.json",
"picture",
"picture.png",
"image/png",
pictureBytes,
new TextListener() {
...
});
...- Http Basic Access Authentication with HttpClient
...
URL urlBase = new URL("http://www.emobtech.com/private/file.txt");
HttpClient httpClient = new HttpClient(url);
//
httpClient.setBasicAuthentication("username", "password");
...- Display an Image in a Form from an URL
...
URL url = new URL("http://www.emobtech.com/images/logo.png");
URLImageItem imageItem = new URLImageItem("Image", url, Item.LAYOUT_CENTER, imagePlaceholder, "at text");
//
Form form = new Form("URL Image");
form.append(imageItem);
...- Display an Image inside a Label in a LWUIT Form from an URL
...
URL url = new URL("http://www.emobtech.com/images/logo.png");
URLLabel imageLabel = new URLLabel(url);
//
Form form = new Form("URL Image");
form.addComponent(imageLabel);
...- Display an Image inside a Button in a LWUIT Form from an URL
...
URL url = new URL("http://www.emobtech.com/images/logo.png");
URLButton imageButton = new URLButton(url);
//
Form form = new Form("URL Image");
form.addComponent(imageButton);
...This project was created by Ernandes Jr. (@ernandesmjr), founder at eMob Tech (@emobtech).