Totally new here, at least, first post.
What I'm trying to accomplish is that the code reads a number from a text file on my webserver, and it compares with an other inbuild number. When the number from online is bigger, it will do something. I've tried many codes, but none of them are working, so I don't have an example either.
Can somebody help me with this?
you can Use the-
DefaultHttpClient httpclient = new DefaultHttpClient();
HttpGet httppost = new
HttpGet("http://www.urlOfThePageYouWantToRead.nl/text.txt");
HttpResponse response = httpclient.execute(httppost);
HttpEntity ht = response.getEntity();
BufferedHttpEntity buf = new BufferedHttpEntity(ht);
InputStream is = buf.getContent();
BufferedReader r = new BufferedReader(new InputStreamReader(is));
StringBuilder total = new StringBuilder();
String line;
while ((line = r.readLine()) != null) {
total.append(line + "\n");
}
TextView.setText(total)
;
now this number must be in total variable. now convert that string number into integer as
int number = Integer.parseInt(total);
now you can compare this number with your mynumber as=
if(number>mynumber)
{ //do stuff
Related
I am trying to get a list of user subreddits via the reddit api. Currently I am able to do a post for login which returns a cookie and modhash. Those are the parameters I'm passing to my method below. However each time I call the function I get an empty response:
"{}"
How can I pass a cookie and modhash via HTTPGET to get a valid response?
public void getUserSubreddits(String[] loginInfo){
HttpClient client = new DefaultHttpClient();
URL url = null;
try {
url = new URL("http://www.reddit.com/subreddits/mine/.json?limit=100");
HttpGet httpGet = new HttpGet(String.valueOf(url));
client.getParams().setParameter(CoreProtocolPNames.USER_AGENT, System.getProperty("http.agent"));
httpGet.addHeader("cookie", loginInfo[1]);
httpGet.addHeader("modhash", loginInfo[0]);
HttpResponse response = client.execute(httpGet);
HttpEntity ht = response.getEntity();
BufferedHttpEntity buf = new BufferedHttpEntity(ht);
InputStream is = buf.getContent();
BufferedReader r = new BufferedReader(new InputStreamReader(is));
StringBuilder total = new StringBuilder();
String line;
while ((line = r.readLine()) != null) {
total.append(line);
}
Log.d(TAG,total.toString());
} catch (Exception e) {
e.printStackTrace();
}
}
It was a simple mistake. To anyone in the future trying this I solved the problem by using Chrome to inspect the headers of an active session on http://www.reddit.com/subreddits/mine/.json?limit=100 url and found that the cookie header started with:
reddit_session
So I removed the modhash changed the my header parameter to read:
httpGet.addHeader("cookie", "reddit_session="+loginInfo[1]+";");
With this I got a valid response.
I just started the topic to get data from a JSON OpenData and visualize via my phone.
I followed this tutorial and it has worked all :)
https://www.learn2crack.com/2013/10/android-asynctask-json-parsing-example.html
The url whew i get the datas is :
http:// + api.learn2crack.com/android/json/ (sorry for that, I don't have a good reputation :) )
Then I wanted to try a Opendata me and my android application stops, the url is:
http://ckan.opendata.nets.upf.edu/storage/f/2013-11-30T16%3A49%3A59.118Z/london.json
You can see it's the same and I only change the name of URL in the code.
You know if the problem is because of the OpenData? and I need some permission? Because when I execute the second part my app stopped
Here, this will work. I am using Strict Policy but normally you should use Async. Please google this as to why we should use Async instead of Strict Policy. This is irrelevant here
When i am using HttpPost to get your json from url, i am getting these errors :-
405 Method Not Allowed
The method POST is not allowed for this resource.
You cannot POST a file
so i am using HttpGet :-
String url = "http://ckan.opendata.nets.upf.edu/storage/f/2013-11-30T16:49:59.118Z/london.json";
try{
StrictMode.ThreadPolicy policy = new StrictMode.ThreadPolicy.Builder().permitAll().build();
StrictMode.setThreadPolicy(policy);
// defaultHttpClient
DefaultHttpClient httpClient = new DefaultHttpClient();
//HttpPost httpPost = new HttpPost(url);
HttpGet httpGet = new HttpGet(url);
HttpResponse httpResponse = httpClient.execute(httpGet);
HttpEntity httpEntity = httpResponse.getEntity();
is = httpEntity.getContent();
BufferedReader reader = new BufferedReader(new InputStreamReader(
is, "iso-8859-1"), 8);
StringBuilder sb = new StringBuilder();
String line = null;
while ((line = reader.readLine()) != null) {
sb.append(line + "\n");
}
is.close();
JSONObject jObj = new JSONObject(sb.toString());
JSONArray json2 = json.getJSONArray("user");
for (int i = 0; i < json2.length(); i++) {
JSONObject c = json2.getJSONObject(i);
}
}
catch (Exception e) {
e.printStackTrace();
}
I am sending an HttpPost request and getting the response in JSON format. But, as the response is so huge, I receive only a small part of the response compared to what I can see it in the browser. My code is below:
StringBuilder builder = new StringBuilder();
HttpPost httpPost = new HttpPost(uri);
HttpResponse response = client.execute(httpPost);
HttpEntity entity = response.getEntity();
InputStream content = entity.getContent();
BufferedReader reader = new BufferedReader(new InputStreamReader(content));
String line;
while ((line = reader.readLine()) != null) {
builder.append(line);
}
As the default buffer size is 8192 characters. I just tried with giving more value but it didn't matter. So, any suggestions on this...
I think that +Che Jami is onto something in the OP.
Manjunath, logcat will only output 1024 characters at a time. Have you tried outputting the String builder 1024 characters at a time? Did you check the length of the string after reading into it?
Send only chunks (batches) of your full response in your responses and while your response is not finished use polling.
I am uploading a large string to web-service. The string contains new line character which is written as "\n".
The data looks some thing like:
05/06/2012 11:35:43 AM- DB exists, transferring data\n05/06/2012
11:48:20 AM- loadUserSpinners, cursor.getCount()=2\n05/06/2012
11:48:20 AM- Battery: 50%\n05/06/2012 11:48:20 AM- ITEM SELECTED: 0
the above data is stored in string JsonArrObj. To upload the data/string, i am using the following code:
HttpParams httpParameters = new BasicHttpParams();
int timeoutConnection = 360000; //6 minutes
HttpConnectionParams.setConnectionTimeout(httpParameters, timeoutConnection);
int timeoutSocket = 420000; //7 minutes
HttpConnectionParams.setSoTimeout(httpParameters, timeoutSocket);
HttpClient httpClient = new DefaultHttpClient(httpParameters);
JSONArray jsonParams = new JSONArray();
Object[] params={IPAddress,Database,DbName,DbPassword,JsonArrObj};
for (int i = 0; i < params.length; i++) {
jsonParams.put(params[i]);
}
JSONObject jsonRequest = new JSONObject();
jsonRequest.put("id", Id);
jsonRequest.put("method", FunctionName);
jsonRequest.put("params", jsonParams);
JSONEntity entity = new JSONEntity(jsonRequest);
entity.setContentType("application/json; charset=utf-8");
HttpPost request = new HttpPost(URL);
request.setEntity(entity);
HttpResponse response = httpClient.execute(request);
StatusLine statusLine = response.getStatusLine();
int statusCode = statusLine.getStatusCode();
if (statusCode == 200) {
HttpEntity httpEntity = response.getEntity();
InputStream content = httpEntity.getContent();
BufferedReader reader = new BufferedReader(
new InputStreamReader(content,"iso-8859-1"),8);
String line;
while ((line = reader.readLine()) != null) {
builder.append(line);
LogE("result line: "+line);
String str=convertString(line);
parseJson(str);
}
content.close();
}
The string is uploaded successfully. The problem I am facing is: while string is being converted to jsonParams, the "\n" in the string data gets converted to "\\n" as a result, on the server side, it shows a small box in stead of new line.
When I open this string in NOTEPAD application, it displays small boxes. But when I open it in WORDPAD app, text is displayed on a new line. According to me, I might have entered in-correct "content-type" or encoding. Please suggest a solution for the same.
JsonArrObj= URLEncoder.encode(JsonArrObj, "utf-8"); gave error while uploading itself...
The data which is sent in the jsonParams- jsonArrObj finally looks like:
05\/06\/2012 04:05:52 PM- DB exists, transferring
data\\n05\/06\/2012 04:32:56 PM- loadUserSpinners,
cursor.getCount()\\u003d2\\n05\/06\/2012 04:32:56 PM- Battery:
50%\\n05\/06\/2012 04:32:56 PM- ITEM SELECTED: 0
Well, the encoder escapes your newline characters. If you want to transport newline chars properly, you can encode the whole stream with base64. If your target os (for data to send) is Windows then you should use \r\n, if mac then \r if unix\linux then \n. After encoding data try to send the encoded and decode it on the other side. For base64 Mr. Google will convince you.
Hey why don't you use the Unicode values for \n as and any other character that is creating this problem
like this U+002FU+006E
I'm developing an app that posts to a site and I'm trying to store the entity response as a string. However, the string only seems to contain a small portion of the response, roughly 35 lines or so. I'm wondering if it has something to do with buffer overflow but really I am not sure. My code is below:
static String getResponseBody(HttpResponse response) throws IllegalStateException, IOException{
String content = null;
HttpEntity entity = response.getEntity();
if (entity != null)
{
InputStream is = entity.getContent();
BufferedReader br = new BufferedReader(new InputStreamReader(is));
StringBuilder sb = new StringBuilder();
String line = null;
while ((line = br.readLine()) != null)
{
if(isBlankString(line) == false)
{
sb.append(line + "\n");
}
}
br.close();
content = sb.toString();
}
return content;
isBlankString just notes if a line doesn't contain any characters, as there's alot of blank lines in the response that were bugging me. I have the issue of not getting the whole response with or without this. Any body know what's going on or how to fix this?
Thanks
In my application I use just single line to get response string from entity:
final String responseText = EntityUtils.toString(response.getEntity());