How to HTTPS post in Android - java

I have looked at the following links, but nothing seems concrete.
Secure HTTP Post in Android
This one does not work anymore, I have tested it and there are comments from other people saying it does not work.
I also checked this out: DefaultHttpClient, Certificates, Https and posting problem! This seems it could work but the blogger just leaves you hanging. More step by step instructions would be helpful. I managed to get my certificate by I have not been able to follow through his second step.
http://www.makeurownrules.com/secure-rest-web-service-mobile-application-android.html This one seem good, but again, I loose the author at the last step: "Back to our original rest client code." He too is all over the place, I have no clue which libraries he is using. He is not explaining his code and with the
RestTemplate restTemplate = new RestTemplate();
it's another cliffhanger. Because that class has not been provided. So, if someone could explain how to do HTTPS post request in detail that would be great. I do need to accept the self signed certificate.

I hope it would help. This is the code i used and worked perfectly fine.
private HttpClient createHttpClient()
{
HttpParams params = new BasicHttpParams();
HttpProtocolParams.setVersion(params, HttpVersion.HTTP_1_1);
HttpProtocolParams.setContentCharset(params, HTTP.DEFAULT_CONTENT_CHARSET);
HttpProtocolParams.setUseExpectContinue(params, true);
SchemeRegistry schReg = new SchemeRegistry();
schReg.register(new Scheme("http", PlainSocketFactory.getSocketFactory(), 80));
schReg.register(new Scheme("https", SSLSocketFactory.getSocketFactory(), 443));
ClientConnectionManager conMgr = new ThreadSafeClientConnManager(params, schReg);
return new DefaultHttpClient(conMgr, params);
}
Then create an HttpClient like this: -
HttpClient httpClient = createHttpClient();
and use it with HttpPost.
Cheers!!
EDIT
And i did not used RestTemplate in my code. I made a simple post request. If you need more help just let me know. It seems like i recently have done something similar to what you are looking for.

This is the method i used for HTTPS Post and Here i used Custom Certificate, So change the HttpClient assignment with yours own...
public String postData(String url, String xmlQuery) {
final String urlStr = url;
final String xmlStr = xmlQuery;
final StringBuilder sb = new StringBuilder();
Thread t1 = new Thread(new Runnable() {
public void run() {
HttpClient httpclient = MySSLSocketFactory.getNewHttpClient();
HttpPost httppost = new HttpPost(urlStr);
try {
List<NameValuePair> nameValuePairs = new ArrayList<NameValuePair>(
1);
nameValuePairs.add(new BasicNameValuePair("xml", xmlStr));
httppost.setEntity(new UrlEncodedFormEntity(nameValuePairs));
HttpResponse response = httpclient.execute(httppost);
Log.d("Vivek", response.toString());
HttpEntity entity = response.getEntity();
InputStream i = entity.getContent();
Log.d("Vivek", i.toString());
InputStreamReader isr = new InputStreamReader(i);
BufferedReader br = new BufferedReader(isr);
String s = null;
while ((s = br.readLine()) != null) {
Log.d("YumZing", s);
sb.append(s);
}
Log.d("Check Now",sb+"");
} catch (ClientProtocolException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
} /*
* catch (ParserConfigurationException e) { // TODO
* Auto-generated catch block e.printStackTrace(); } catch
* (SAXException e) { // TODO Auto-generated catch block
* e.printStackTrace(); }
*/
}
});
t1.start();
try {
t1.join();
} catch (InterruptedException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
System.out.println("Getting from Post Data Method "+sb.toString());
return sb.toString();
}

Related

How can I view the full URL after using MultipartEntityBuilder?

I am fairly confident this code works (I used it in another part of my project for a different API) as far as posting but I do not think the URL is being formatted correctly. I want to know if there is anyway to view the full URL after building all of the entities so I can see if the final URL is formatted correctly. Code:
My URL = http://pillbox.nlm.nih.gov/PHP/pillboxAPIService.php
Method = POST
API key = not going to post (works though)
drugName = just a string that has the name of a drug
I have logs in the code to try and view the url but they aren't returning anything close and the debugger isn't either.
I am trying to build the URL to look like this:
http://pillbox.nlm.nih.gov/PHP/pillboxAPIService.php?key=My_API_KEY&ingredient=diovan
public String makeServiceCallPillBox(String url, int method,
String api, String drugName)
{
String resultEnitity = null;
try {
// http client
DefaultHttpClient httpClient = new DefaultHttpClient();
HttpResponse httpResponse = null;
HttpEntity entityResult = null;
// Checking http request method type
if (method == POST)
{
HttpPost httpPost = new HttpPost(url);
// Butild the parameters
MultipartEntityBuilder builder = MultipartEntityBuilder.create();
builder.setMode(HttpMultipartMode.BROWSER_COMPATIBLE);
builder.addTextBody("key", api);
builder.addTextBody("ingredient", drugName);;
final HttpEntity entity = builder.build();
httpPost.setEntity(entity);
Log.d("url", httpPost.toString());
httpResponse = httpClient.execute(httpPost);
Log.d("post", builder.toString());
Log.d("post2", entity.toString());
entityResult = httpResponse.getEntity();
resultEnitity = EntityUtils.toString(entityResult);
Log.d("result", resultEnitity);
}
} catch (UnsupportedEncodingException e) {
e.printStackTrace();
} catch (ClientProtocolException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
return resultEnitity;
}
Any help is appreciated.

google-api-client to create short URL in java

I have a link that is way too long (got some URL-paramameters etc). I want to shorten this using the googpe API urlshortener.
The API-key is created in google Developers Console. The key is an 'public API access' and a 'Key for server applications'.
Can anyone see why this code does not work? I have tried for way too long to make this happen.
try {
String g = "https://www.googleapis.com/urlshortener/v1/url";
String url = g + "?key=secretKey";
HttpClient client = HttpClientBuilder.create().build();
HttpPost post = new HttpPost(url);
// add header
//post.setHeader("User-Agent", USER_AGENT);
post.setHeader("Accept", "application/json");
//add the long url as a parameter
List<NameValuePair> urlParameters = new ArrayList<NameValuePair>();
urlParameters.add(new BasicNameValuePair("longUrl", "www.google.com"));
post.setEntity(new UrlEncodedFormEntity(urlParameters));
HttpResponse response = client.execute(post);
System.out.println("Response Code : "
+ response.getStatusLine().getStatusCode());
BufferedReader rd = new BufferedReader(
new InputStreamReader(response.getEntity().getContent()));
StringBuffer result = new StringBuffer();
String line = "";
while ((line = rd.readLine()) != null) {
result.append(line);
} } catch (MalformedURLException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
Returns a responsecode of 400
I guess there was just a problem with my HTTP-request. When I used the code used here: http://www.snip2code.com/Snippet/216067/Call-Google-Shorten-URL-API it worked.
Posting this answer instead of just deleting the question, because the API is recently changed (I guess mid-2014), so there is not much updated examples of this.
Good luck to all of you trying to access this API :)

Android application database connectivity with web app using Jsp

I am developing a web app in JSP. For same project I'm developing an Android app. The web app uses Apache Tomcat and MySQL. Now I want to log in from the Android application by retrieving data from MySQL database. But how?
I did find many tutorials but all are using PHP scripts. I'm using Eclipse for both apps.
For android Try this.
private static HttpClient getHttpClient() {
if (mHttpClient == null) {
mHttpClient = new DefaultHttpClient();
final HttpParams params = mHttpClient.getParams();
HttpConnectionParams.setConnectionTimeout(params, HTTP_TIMEOUT);
HttpConnectionParams.setSoTimeout(params, HTTP_TIMEOUT);
ConnManagerParams.setTimeout(params, HTTP_TIMEOUT);
}
return mHttpClient;
}
And then
public static String sendFirst(String requestString) throws Exception {
BufferedReader in = null;
try {
HttpClient client = getHttpClient();
HttpPost request = new HttpPost(universal_URL_MENU+"?request_menu="+start_menu);
HttpResponse response = client.execute(request);
System.out.println("response in class"+response);
in = new BufferedReader(new InputStreamReader(response.getEntity().getContent()));
StringBuffer sb = new StringBuffer("");
String line = "";
String NL = System.getProperty("line.separator");
while ((line = in.readLine()) != null) {
sb.append(line + NL);
}
in.close();
result = sb.toString();
// }
}catch(Exception e){
e.printStackTrace();
System.out.println("catch");
}
finally {
if (in != null) {
try {
in.close();
} catch (IOException e) {
e.printStackTrace();
}
}
}
return result;
}
Where
public static String universal_URL_MENU = "http://192.***.1.#:9999/my_Project/ReqFromTabFor.do";
Now for Jsp or Servlet
try{
PrintWriter out=res.getWriter();
String subcategory=req.getParameter("request_menu");
System.out.println("Receive : "+subcategory);
JSONObject jobj=UserDelegate.reqFromTabForMenuBySCatg(subcategory);
}
if(jobj!=null){
out.println(jobj);
}else{
out.print("Sorry Not Available");
}
}catch(Exception e){ e.printStackTrace(); }
What happens between the client (your Android app) and the server is loosely coupled, meaning that they are not related whatsoever except for the protocol with which they communicate, which for a web service is HTTP.
Usually a client (either an app or a web browser) makes an HTTP request sending parameters (e.g. login, password) with POST or GET methods. The server takes these parameters and processes them according to its needs.
This may sound obvious, but you say that all the tutorials are using php script, so you seem confused: your problem on Android? or is your problem in the server?
The code you need in your Android app is EXACTLY THE SAME regardless of the server technology (asp, cgi, jsp, php...) and database (MySql, Oracle...), because the HTTP protocol is standard.
Here is an example I copied from here to make a simple HTTP request with two POST parameters.
public void postData() {
// Create a new HttpClient and Post Header
HttpClient httpclient = new DefaultHttpClient();
HttpPost httppost = new HttpPost("http://www.yoursite.com/script.php");
try {
// Add your data
List<NameValuePair> nameValuePairs = new ArrayList<NameValuePair>(2);
nameValuePairs.add(new BasicNameValuePair("id", "12345"));
nameValuePairs.add(new BasicNameValuePair("stringdata", "AndDev is Cool!"));
httppost.setEntity(new UrlEncodedFormEntity(nameValuePairs));
// Execute HTTP Post Request
HttpResponse response = httpclient.execute(httppost);
} catch (ClientProtocolException e) {
// TODO Auto-generated catch block
} catch (IOException e) {
// TODO Auto-generated catch block
}
}

Android: Uploading Strings To Server

I'm trying to let my users be able to report small errors my android application automatically catches to my server. It's nothing big, just a small text box and send button.
It's supposed to send 3 strings (error, optional user description, and time) to a file on my website made specifically to capture those errors. The thing is, I have absolutely no idea how to do so. I only know how to let my application read info from my website but not the other way around.
Do I have to have a special script on my website? Are JSON Strings necessary? I need the string to be saved there. (Not temporarily)
I'm a bit of a newbie so any help is appreciated. Thanks!
- There has to be a script running on your server, eg: php script.
- Its actually a web-service published on the server so that a client can access it.
- Then you will need to do a HTTP Post to the Server, its better to use NameValuePair along with it to send the data.
This is my code for doing HTTP POST:
public String postData(String url, String xmlQuery) {
final String urlStr = url;
final String xmlStr = xmlQuery;
final StringBuilder sb = new StringBuilder();
Thread t1 = new Thread(new Runnable() {
public void run() {
HttpClient httpclient = MySSLSocketFactory.getNewHttpClient();
HttpPost httppost = new HttpPost(urlStr);
try {
List<NameValuePair> nameValuePairs = new ArrayList<NameValuePair>(
1);
nameValuePairs.add(new BasicNameValuePair("xml", xmlStr));
httppost.setEntity(new UrlEncodedFormEntity(nameValuePairs));
HttpResponse response = httpclient.execute(httppost);
Log.d("Vivek", response.toString());
HttpEntity entity = response.getEntity();
InputStream i = entity.getContent();
Log.d("Vivek", i.toString());
InputStreamReader isr = new InputStreamReader(i);
BufferedReader br = new BufferedReader(isr);
String s = null;
while ((s = br.readLine()) != null) {
Log.d("YumZing", s);
sb.append(s);
}
Log.d("Check Now", sb + "");
} catch (ClientProtocolException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
} /*
* catch (ParserConfigurationException e) { // TODO
* Auto-generated catch block e.printStackTrace(); } catch
* (SAXException e) { // TODO Auto-generated catch block
* e.printStackTrace(); }
*/
}
});
t1.start();
try {
t1.join();
} catch (InterruptedException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
System.out.println("Getting from Post Data Method " + sb.toString());
return sb.toString();
}
//////////////////////////// Edited Part ///////////////////////////////////
Server side php code:
<?php
require_once(ROOT.'/lab/lib/xyz_api_int.php');
try {
//setup the sdk
$api = YumzingApiInt::_get(
Config::get('api_int','url'),
Config::get('api_int','key'),
Config::get('api_int','secret')
);
//connect to the api
$api->connect();
//check our token
echo $api->getToken();
} catch(Exception $e){
sysError($e->getMessage());
}
You just need to post values by http to a php script on your server that will save those values in your file or a database.

Java application terminates at getOutputStream()

I'm creating an application for our Android devices. The aim of this section is to post a username and password (currently just assigned as a string) to a web service and to receive a login token. When running the code, at the getOutputStream() line, my code terminates and will no progress any further.
I have assigned the android emulator GSM access and also set the proxy and DNS server within Eclipse. I'm not sure where to go with it now!
This is within my onHandleIntent():
protected void onHandleIntent(Intent i) {
try{
HttpURLConnection http_conn = (HttpURLConnection) new URL("http://www.XXXXX.com").openConnection();
http_conn.setRequestMethod("POST");
http_conn.setDoInput(true);
http_conn.setDoOutput(true);
http_conn.setRequestProperty("Content-type", "application/json; charset=utf-8");
String login = URLEncoder.encode("XXXXX", "UTF-8") + "=" + URLEncoder.encode("XX", "UTF-8");
login += "&" + URLEncoder.encode("XXXXX", "UTF-8") + "=" + URLEncoder.encode("XX", "UTF-8");
OutputStreamWriter wr = new OutputStreamWriter(http_conn.getOutputStream());
//TERMINATES HERE
wr.write(login);
wr.flush();
BufferedReader rd = new BufferedReader(new InputStreamReader(http_conn.getInputStream()));
String line = rd.toString();
wr.close();
rd.close();
http_conn.disconnect();
}
catch (IOException e){
}
}
This is my first go at java and have only been writing it for a few days so bear with me if I've missed something obvious.
Thanks
If you want to POST something using HTTP, why not use HTTP POST? ;-)
Here is an example snippet:
public void postData() {
// Create a new HttpClient and Post Header
HttpClient httpclient = new DefaultHttpClient();
HttpPost httppost = new HttpPost("http://www.yoursite.com/script.php");
try {
// Add your data
List<NameValuePair> nameValuePairs = new ArrayList<NameValuePair>(2);
nameValuePairs.add(new BasicNameValuePair("id", "12345"));
nameValuePairs.add(new BasicNameValuePair("stringdata", "AndDev is Cool!"));
httppost.setEntity(new UrlEncodedFormEntity(nameValuePairs));
// Execute HTTP Post Request
HttpResponse response = httpclient.execute(httppost);
} catch (ClientProtocolException e) {
// TODO Auto-generated catch block
} catch (IOException e) {
// TODO Auto-generated catch block
}
}
Source: http://www.androidsnippets.com/executing-a-http-post-request-with-httpclient
This may not be the appropriate answer, but will certainly be helpful to you. I have used this code for sending and receiving the request and reply resp, to a webservice.
This code is working, but will need some Refactoring, as i have used some extra variable, which are not needed.
I have used the NameValuePair here for Post
public String postData(String url, String xmlQuery) {
final String urlStr = url;
final String xmlStr = xmlQuery;
final StringBuilder sb = new StringBuilder();
Thread t1 = new Thread(new Runnable() {
public void run() {
HttpClient httpclient = new DefaultHttpClient();
HttpPost httppost = new HttpPost(urlStr);
try {
List<NameValuePair> nameValuePairs = new ArrayList<NameValuePair>(
1);
nameValuePairs.add(new BasicNameValuePair("xml", xmlStr));
httppost.setEntity(new UrlEncodedFormEntity(nameValuePairs));
HttpResponse response = httpclient.execute(httppost);
Log.d("Vivek", response.toString());
HttpEntity entity = response.getEntity();
InputStream i = entity.getContent();
Log.d("Vivek", i.toString());
InputStreamReader isr = new InputStreamReader(i);
BufferedReader br = new BufferedReader(isr);
String s = null;
while ((s = br.readLine()) != null) {
Log.d("YumZing", s);
sb.append(s);
}
Log.d("Check Now",sb+"");
} catch (ClientProtocolException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
} /*
* catch (ParserConfigurationException e) { // TODO
* Auto-generated catch block e.printStackTrace(); } catch
* (SAXException e) { // TODO Auto-generated catch block
* e.printStackTrace(); }
*/
}
});
t1.start();
try {
t1.join();
} catch (InterruptedException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
System.out.println("Getting from Post Data Method "+sb.toString());
return sb.toString();
}
String line = rd.toString();
should be
String line = rd.readLine();
that might do the trick. rd.toString() gives you a String representation of your BufferedReader. It does not trigger the HTTP operation. I did not test your code, so there might be other errors as well, this was just the obvious one.

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