InputStream inputStream = httpURLConnection.getInputStream();
BufferedReader bufferedReader = new BufferedReader(new InputStreamReader(inputStream, "iso-8859-1"));
String result = "";
String line ="";
while((line = bufferedReader.readLine())!= null){
result += line;
}
bufferedReader.close();
inputStream.close();
httpURLConnection.disconnect();
return result;
message shows nothing, result is not given
The problem is that your are not appending the line into your result.
Make result variable String Buffer and use append function to do so then return the string from string buffer using toString function
Related
please i want to know what is wrong with this code, if i try to split, it just crashes my app, but without the split line of code my app runs sucessfully and returns a response from my server with the delimeter "|" here is the code:
protected String doInBackground(String... params) {
String type= params[0];
String login_url="somelink.com/somelink.php";
if(type.equals("login")){
try {
String username= params[1];
String password= params[2];
URL url= new URL(login_url);
HttpURLConnection httpURLConnection = (HttpURLConnection)url.openConnection();
httpURLConnection.setRequestMethod("POST");
httpURLConnection.setDoOutput(true);
httpURLConnection.setDoInput(true);
OutputStream outputStream = httpURLConnection.getOutputStream();
BufferedWriter bufferedWriter= new BufferedWriter(new OutputStreamWriter(outputStream, "UTF-8"));
String data=URLEncoder.encode("n", "UTF-8") + "=" + URLEncoder.encode(username, "UTF-8");
data+="&" + URLEncoder.encode("p", "UTF-8") + "=" + URLEncoder.encode(password, "UTF-8");
bufferedWriter.write(data);
bufferedWriter.flush();
bufferedWriter.close();
outputStream.close();
InputStream inputStream = httpURLConnection.getInputStream();
BufferedReader bufferedReader = new BufferedReader(new InputStreamReader(inputStream,"iso-8859-1"));
String result="";
String line="";
while((line = bufferedReader.readLine()) != null){
result += line;
}
String[] words=result.split("\\|");
StringBuilder ch=new StringBuilder();
ch.append(words[0]);
String check=ch.toString();
bufferedReader.close();
inputStream.close();
httpURLConnection.disconnect();
return check;
} catch (MalformedURLException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
}
return null;
}
The only obvious thing I can see is that you are probably accessing an element that does not exist. This line:
ch.append(words[0]);
It's possible that the length of the words array, in some cases, can be zero (e.g., because line is empty, etc.), and you are trying to access a non-existent element.
All you have to do is add if statement to check if you have a non-empty array before you do words[0].
Error:
String Buffer is unable to convert whole data in String using toString
BufferedReader bufferedReader = new BufferedReader(new InputStreamReader(inputStream));
String line = "";
StringBuffer buffer =new StringBuffer();
while ((line = bufferedReader.readLine()) != null) {
buffer.append(line +"\n");
Log.d(LOG_TAG, "line:" + line);
}
/* Close Stream */
if (null != inputStream) {
inputStream.close();
}
Log.d(LOG_TAG, "buffer.toString():" + buffer.toString());
I am using the following code to read json data from url , but it has fixed length of 500 for the json data. How can I ensure that all the data(variable length) is always read.
private String downloadUrl(String myurl) throws IOException {
InputStream is = null;
// Only display the first 500 characters of the retrieved
// web page content.
int len = 500;
try {
URL url = new URL(myurl);
HttpURLConnection conn = (HttpURLConnection) url.openConnection();
conn.setReadTimeout(10000 /* milliseconds */);
conn.setConnectTimeout(15000 /* milliseconds */);
conn.setRequestMethod("GET");
conn.setDoInput(true);
// Starts the query
conn.connect();
int response = conn.getResponseCode();
Log.d(DEBUG_TAG, "The response is: " + response);
is = conn.getInputStream();
// Convert the InputStream into a string
String contentAsString = readIt(is, len);
return contentAsString;
// Makes sure that the InputStream is closed after the app is
// finished using it.
} finally {
if (is != null) {
is.close();
}
}
}
public String readIt(InputStream stream, int len) throws IOException, UnsupportedEncodingException {
Reader reader = null;
reader = new InputStreamReader(stream, "UTF-8");
char[] buffer = new char[len];
reader.read(buffer);
return new String(buffer);
}
Thanks.
Reference
InputStream in = new BufferedInputStream(conn.getInputStream());
BufferedReader reader = new BufferedReader(new InputStreamReader(in));
StringBuilder sb = new StringBuilder();
String newLine = System.getProperty("line.separator");
String line;
while ((line = reader.readLine()) != null) {
sb.append(line + newLine);
}
String result = sb.toString();
byte[] data = new byte[1024];
int bytesRead = inputstream.read(data);
while(bytesRead != -1) {
doSomethingWithData(data, bytesRead);
bytesRead = inputstream.read(data);
}
This URL return & open text file directly, i just want to read its content how can i do it
http://translate.google.com.tw/translate_a/t?client=t&hl=en&sl=en&tl=gu&ie=UTF-8&oe=UTF-8&multires=1&oc=1&otf=2&ssel=0&tsel=0&sc=1&q=this+is+translate+demo
i have tried
public static String translate(String sl, String tl, String text) throws IOException{
// fetch
URL url = new URL("https://translate.google.com.tw/translate_a/t?client=t&hl=en&sl=" +
sl + "&tl=" + tl + "&ie=UTF-8&oe=UTF-8&multires=1&oc=1&otf=2&ssel=0&tsel=0&sc=1&q=" +
URLEncoder.encode(text, "UTF-8"));
Log.d("URL", ":: "+url);
URLConnection urlConnection = url.openConnection();
urlConnection.setRequestProperty("User-Agent", "Something Else");
Log.d("URL", ":: After opening Connection");
BufferedReader br = new BufferedReader(new InputStreamReader(urlConnection.getInputStream()));
Log.d("URL", ":: br "+br);
String result = br.readLine();
br.close();
// parse
Log.d("URL", ":: "+result);
result = result.substring(2, result.indexOf("]]") + 1);
StringBuilder sb = new StringBuilder();
String[] splits = result.split("(?<!\\\\)\"");
for(int i = 1; i < splits.length; i += 8)
sb.append(splits[i]);
return sb.toString().replace("\\n", "\n").replaceAll("\\\\(.)", "$1");
}
If Your Url directly open's the Text File then this code reads the TextFile and print's also as follows:
public class URLReader {
public static void main(String[] args) throws Exception {
URL oracle = new URL("http://www.oracle.com/");
BufferedReader in = new BufferedReader(
new InputStreamReader(oracle.openStream()));
String inputLine;
while ((inputLine = in.readLine()) != null)
System.out.println(inputLine);
in.close();
}
}
Hi everyone I am trying to read the date from a file in android. I am using Eclipse and the program is compiling and running, just it is not printing the context of the txt file. Here is my load method
private String load(String filename) {
try {
// Log.v("Home", " in the load method");
Log.d("Home", " in the load method");
final FileInputStream fis = openFileInput(filename);
// final InputStream fis = getResources().openRawResource(R.raw.pages);
final BufferedReader reader = new BufferedReader(new InputStreamReader(fis));
StringBuilder sb = new StringBuilder();
String line = null;
while ((line = reader.readLine()) != null) {
sb.append(line);
}
reader.close();
fis.close();
return sb.toString();
} catch (Exception ex) {
return "No entry exists for this file";
}
}
and in the oncreate i just access it
String fileName = "pages.txt";
load(fileName);
pages.txt is in the res/raw directory. I tried to read the file with both
final FileInputStream fis = openFileInput(filename);
// final InputStream fis = getResources().openRawResource(R.raw.pages);
but It is not printing the context.
I added in the onCreate method
Log.d("File", load(fileName));
but is returning the catch statement No entry exists for this file.
Thanks
try to use like below,
System.out.println(load(raw.pages));
private String load(int id) {
try {
Resources res = getResources();
InputStream fis = res.openRawResource(id);
final BufferedReader reader = new BufferedReader(new InputStreamReader(fis));
StringBuilder sb = new StringBuilder();
String line = null;
while ((line = reader.readLine()) != null) {
sb.append(line);
}
reader.close();
fis.close();
return sb.toString();
} catch (Exception ex) {
return "No entry exists for this file";
}
}