I have the following problem in my project:
If I run my project locally (and from Jar), the .ftlh file that I am processing compiles just fine - it shows all international characters withouth any problems (like ą ę ć).
Now, if I deploy my project to cloud, all of those international characters are displayed as ?. I have no idea whats going on, as I've set the following in the .ftlh file:
<#ftl encoding='UTF-8'>
<!DOCTYPE html>
<html lang="en">
<head>
<meta http-equiv="Content-type" content="text/html;charset=UTF-8">
</head>
<body>
And my configuration:
#Bean
public freemarker.template.Configuration templateConfiguration() throws IOException {
freemarker.template.Configuration configuration = new freemarker.template.Configuration(freemarker.template.Configuration.VERSION_2_3_24);
configuration.setTemplateLoader(new ClassTemplateLoader(this.getClass(), "/folder"));
configuration.setDefaultEncoding("UTF-8");
configuration.setTemplateExceptionHandler(TemplateExceptionHandler.RETHROW_HANDLER);
configuration.setLogTemplateExceptions(false);
return configuration;
}
And this is how I process the template:
#Qualifier("templateConfiguration")
#Autowired
private Configuration configuration;
public void generateEmail(Order order, OutputStream outputStream) throws IOException, TemplateException {
Template template = configuration.getTemplate(EMAIL, "UTF-8");
OutputStreamWriter out = new OutputStreamWriter(outputStream);
template.process(order, out);
}
When I generate the email, and use System.out.println on the following:
ByteArrayOutputStream byteArrayOutputStream = new ByteArrayOutputStream();
try{
emailsTemplateService.generateEmail(order, byteArrayOutputStream);
} catch (Exception e){
e.printStackTrace();
}
String htmlMessage = new String(byteArrayOutputStream.toByteArray(), StandardCharsets.UTF_8);
System.out.println(htmlMessage);
It will print the HTML file with international characters (when runs locally). But when I run in the cloud, it will display ? instead.
Any ideas on what am I doing wrong?
You've used a specified character encoding in almost all cases, which is good. But you forgot one.
This:
OutputStreamWriter out = new OutputStreamWriter(outputStream);
Should be this:
OutputStreamWriter out = new OutputStreamWriter(outputStream, StandardCharsets.UTF_8);
Since you didn't specify the encoding for the OutputStreamWriter, it took the platform default encoding, which was different for the two platforms on which you ran the code (and it was not UTF-8 on the cloud)
Related
I need to use Authorize.net AIM method to charge credit cards online. As a starting point, I've created a java servlet to call Authorize.net's sample JSP code. I'm a Java newbie and this is my first experience using JSP.
The servlet compiles fine, but when I access the servlet in a browser, it returns a blank screen. I was expecting to see the output generated by sample.jsp (even though it's not a real transaction). Anyone know why it's not showing up?
I'm guessing it's got something to do with the servlet using the variable res and the JSP file simply using out to write to the screen. Don't I need something like PrintWriter out = res.getWriter(); in the JSP file? Or, how does variable res get passed into the JSP file such that the JSP file can write the browser, etc? I'm not clear on this. Can someone give me a sanity check?
-------- Java Servlet -------
public class Payment extends HttpServlet {
#Override
public void init(ServletConfig config) throws ServletException {
super.init(config);
}
protected void doGet(HttpServletRequest req, HttpServletResponse res)
throws ServletException, IOException {
try {
// call sample.jsp
req.getRequestDispatcher("/sample.jsp").include(req,res);
} catch (Exception e) {
...
} finally {
...
}
}
}
-------- sample.jsp from Authorize.net; sits in same directory as Payment.class ---------
<!-- This sample code is designed to connect to Authorize.net using the AIM method.
For API documentation or additional sample code, please visit: http://developer.authorize.net -->
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<HTML lang='en'>
<HEAD>
<TITLE> Sample AIM Implementation </TITLE>
</HEAD>
<BODY>
<P> This sample code is designed to generate a post using Authorize.net
Advanced Integration Method (AIM) and display the results of this post to
the screen. </P>
<P> For details on how this is accomplished, please review the readme file,
the comments in the sample code, and the Authorize.net AIM API documentation
found at http://developer.authorize.net </P>
<HR />
<%# page import="java.util.*" %>
<%# page import="java.net.*" %>
<%# page import="java.io.*" %>
<%# page import="javax.net.ssl.*" %>
<%# page import="java.net.URLEncoder" %>
<%
// By default, this sample code is designed to post to our test server for
// developer accounts: https://test.authorize.net/gateway/transact.dll
// for real accounts (even in test mode), please make sure that you are
// posting to: https://secure.authorize.net/gateway/transact.dll
URL post_url = new URL("https://test.authorize.net/gateway/transact.dll");
Hashtable post_values = new Hashtable();
// the API Login ID and Transaction Key must be replaced with valid values
post_values.put ("x_login", "API_LOGIN_ID");
post_values.put ("x_tran_key", "TRANSACTION_KEY");
post_values.put ("x_version", "3.1");
post_values.put ("x_delim_data", "TRUE");
post_values.put ("x_delim_char", "|");
post_values.put ("x_relay_response", "FALSE");
post_values.put ("x_type", "AUTH_CAPTURE");
post_values.put ("x_method", "CC");
post_values.put ("x_card_num", "4111111111111111");
post_values.put ("x_exp_date", "0115");
post_values.put ("x_amount", "19.99");
post_values.put ("x_description", "Sample Transaction");
post_values.put ("x_first_name", "John");
post_values.put ("x_last_name", "Doe");
post_values.put ("x_address", "1234 Street");
post_values.put ("x_state", "WA");
post_values.put ("x_zip", "98004");
// Additional fields can be added here as outlined in the AIM integration
// guide at: http://developer.authorize.net
// This section takes the input fields and converts them to the proper format
// for an http post. For example: "x_login=username&x_tran_key=a1B2c3D4"
StringBuffer post_string = new StringBuffer();
Enumeration keys = post_values.keys();
while( keys.hasMoreElements() ) {
String key = URLEncoder.encode(keys.nextElement().toString(),"UTF-8");
String value = URLEncoder.encode(post_values.get(key).toString(),"UTF-8");
post_string.append(key + "=" + value + "&");
}
// The following section provides an example of how to add line item details to
// the post string. Because line items may consist of multiple values with the
// same key/name, they cannot be simply added into the above array.
//
// This section is commented out by default.
/*
String[] line_items = {
"item1<|>golf balls<|><|>2<|>18.95<|>Y",
"item2<|>golf bag<|>Wilson golf carry bag, red<|>1<|>39.99<|>Y",
"item3<|>book<|>Golf for Dummies<|>1<|>21.99<|>Y"};
for (int i = 0; i < line_items.length; i++) {
String value = line_items[i];
post_string.append("&x_line_item=" + URLEncoder.encode(value));
}
*/
// Open a URLConnection to the specified post url
URLConnection connection = post_url.openConnection();
connection.setDoOutput(true);
connection.setUseCaches(false);
// this line is not necessarily required but fixes a bug with some servers
connection.setRequestProperty("Content-Type","application/x-www-form-urlencoded");
// submit the post_string and close the connection
DataOutputStream requestObject = new DataOutputStream( connection.getOutputStream() );
requestObject.write(post_string.toString().getBytes());
requestObject.flush();
requestObject.close();
// process and read the gateway response
BufferedReader rawResponse = new BufferedReader(new InputStreamReader(connection.getInputStream()));
String line;
String responseData = rawResponse.readLine();
rawResponse.close(); // no more data
// split the response into an array
String [] responses = responseData.split("\\|");
// The results are output to the screen in the form of an html numbered list.
out.println("<OL>");
for(Iterator iter=Arrays.asList(responses).iterator(); iter.hasNext();) {
out.println("<LI>" + iter.next() + " </LI>");
}
out.println("</OL>");
// individual elements of the array could be accessed to read certain response
// fields. For example, response_array[0] would return the Response Code,
// response_array[2] would return the Response Reason Code.
// for a list of response fields, please review the AIM Implementation Guide
%>
</BODY>
</HTML>
UPDATE 1
If I replace sample.jsp above with sampleJustHTML.jsp, it still gives a blank page.
---------- sampleJustHTML.jsp -----------
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<HTML lang='en'>
<HEAD>
<TITLE> Sample AIM Implementation </TITLE>
</HEAD>
<BODY>
<P> This sample code is designed to generate a post using Authorize.net
Advanced Integration Method (AIM) and display the results of this post to
the screen. </P>
</BODY>
</HTML>
If you put jsp file under WEB-INF folder you can use like :req.getRequestDispatcher("/WEB-INF/sample.jsp").include(req,res);
Now I will guess : req.getRequestDispatcher("/WEB-INF/classes/sample.jsp").include(req,res);
I'm having a problem encoding a part of a webpage in my Android-application. What I've got is a application collecting part of a webpage and displaying this to a user. For this question lets say that I've got a webpage with a text and below the text a table and below the table a lot of junk I'm not interested in. So I'm chosing what to view using the position of the first element (for example a unique tag) and a end position (same there, something unique. Using a inputstreamreader with a start/end position.
Then in my string ("string") I run:
String s = Uri.encode(string);
The string s is then used accordingly:
web.loadData(s, "text/html","ISO-8859-1");
But this gives me some unwanted chars in the middle of the text: "Â" appears. I've tried to in the string run .replace("Â", ""); but this doesn't solve the problem.
I've also tried following:
web.loadData(s, "text/html", "UTF-8");
web.loadData(s,"text/html;utf-8",null);
But the "Â" and one or two "*" still appears?
Been searching the web and found the: loadDataWithBaseUrlbut this doesn't solve it either so I would very much like som assistence :)
On the top of the page:
<html xmlns="http://www.w3.org/1999/xhtml" lang="sv-se" dir="ltr">
On another page:
<html xmlns="http://www.w3.org/1999/xhtml" lang="en-us" dir="ltr">
So I've got one english and one swedish page but the error is regarding both url:s.
Best regards!
use this:
webview.loadData(html_content, "text/html; charset=utf-8", "utf-8");
I tested it, and it works.
This code worked for me.
String base64EncodedString = null;
try {
base64EncodedString = android.util.Base64.encodeToString((preString+mailContent.getBody()+postString).getBytes("UTF-8"), android.util.Base64.DEFAULT);
} catch (UnsupportedEncodingException e1) {
// TODO Auto-generated catch block
e1.printStackTrace();
}
if(base64EncodedString != null)
{
wvMailContent.loadData(base64EncodedString, "text/html; charset=utf-8", "base64");
}
else
{
wvMailContent.loadData(preString+mailContent.getBody()+postString, "text/html; charset=utf-8", "utf-8");
}
I am using JSoup to get the H1 tag value from a webpage, this tag contains the following HTML.
Hexyl β-D-glucopyranoside
When I use the .text() method I get the following. (Note the ?) I assume this is because it cannot work out the HTML for the "β" character. How do I get this value as rendered on a webpage.
Hexyl ?-D-glucopyranoside
Do I need to do some kind of conversion after I have picked up the text I want?
Here is my code.
String check = "<title>Hexyl β-D-glucopyranoside ≥98.0% (TLC) | ≥ ≥</title>";
Document doc3 = Jsoup.parse(check);
doc3.outputSettings().escapeMode(Entities.EscapeMode.base); // default
doc3.outputSettings().charset("UTF-8");
System.out.println("UTF-8: " + doc3.html());
//doc3.outputSettings().charset("ISO 8859-1");
doc3.outputSettings().charset("ASCII");
System.out.println("ASCII: " + doc3.html());`
-----Output at console-----
UTF-8: <html>
<head>
<title>Hexyl ?-D-glucopyranoside ?98.0% (TLC) | ? ? </title>
</head>
<body></body>
</html>
ASCII: <html>
<head>
<title>Hexyl β-D-glucopyranoside ≥98.0% (TLC) | ≥ ≥</title>
</head>
<body></body>
</html>
Looks like the IDE you're using is using the wrong character encoding.
It's nothing to do with your code as I've ran it and it's fine (outputs the weird characters). If you're using Eclipse go to the run configuration settings for that particular project and click the 'common' tab then choose UTF-8.
It's too late to set charset after parsing a document. I had the same problem once, tried to do it your way and failed miserably.
This worked for me:
String url = "url to html page";
InputStream is is =new URL(url).openStream();
org.jsoup.nodes.Document doc = org.jsoup.Jsoup.parse(is , "ISO-8859-2", url);
If I have html text only as string, I convert it to InputString first (http://www.kodejava.org/examples/265.html)
InputStream is = new ByteArrayInputStream(text.getBytes("UTF-8"));
then read it with correct charset:
BufferedReaderr = new BufferedReader(new InputStreamReader(is, "UTF-8"), 4*1024);
StringBuilder total = new StringBuilder();
String line = "";
while ((line = r.readLine()) != null) {
total.append(line);
}
r.close();
is.close();
String html = total.toString();
...and parse:
doc = org.jsoup.Jsoup.parse(html);
The important thing is to somehow get InputStream object and from here there're ways to use your desired charset with it. Maybe it can be done in a more strightforward way. But it works.
I have this code where I am trying to read an image from Url:
public class question_insert {
public static String latex(String tex) throws IOException {
String urltext = "http://chart.apis.google.com/chart?cht=tx&chl="+tex;
URL url = new URL(urltext);
BufferedReader in = new BufferedReader(new InputStreamReader(url
.openStream()));
String inputLine;
while ((inputLine = in.readLine()) != null) {
// Process each line.
System.out.println(inputLine.toString());
}
in.close();
return inputLine;}
But what I am getting is unreadable code. The url gives only one image try this:
http://chart.apis.google.com/chart?cht=tx&chl=2+2%20\frac{3}{4}
What should I do to embed the image into Html?
First of all it is not clear what you mean by image in Html format ? You could Base64 encode its binary data, but is that what you really want?
How do you expect to output a PNG picture returned by your URL to a text console (that is System.out)?
Second, the way you're retrieving the image is not functional even if you were to store it on a disk as a PNG file, because Reader and its derivatives like BufferedReader are used to read character data. From Reader API:
Abstract class for reading character streams
You need to read binary (byte) data, so you need to stick with BufferedInputStream
After some thinking I realized that embedding image into HTML is what you really want:
public static void main(String[] args) throws Exception {
String urltext = "http://chart.apis.google.com/chart?cht=tx&chl=2+2%20\\frac{3}{4}";
URL url = new URL(urltext);
BufferedInputStream bis = new BufferedInputStream(url.openStream());
byte[] imageBytes = new byte[0];
for(byte[] ba = new byte[bis.available()];
bis.read(ba) != -1;) {
byte[] baTmp = new byte[imageBytes.length + ba.length];
System.arraycopy(imageBytes, 0, baTmp, 0, imageBytes.length);
System.arraycopy(ba, 0, baTmp, imageBytes.length, ba.length);
imageBytes = baTmp;
}
System.out.println("<img src='data:image/png;base64," + DatatypeConverter.printBase64Binary(imageBytes) + "'>");
}
The result is:
<img src='data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAABsAAAAhCAIAAACnV0fJAAAABmJLR0QA/wD/AP+gvaeTAAAC/klEQVRIiaWWv0vzQBjHr2ltsGDEyf+giAg5iIO4iiJC8cciQhaLk9IOGpcOii5ugj/qZoeWgqtFXJxrBSnUQTAianTJEJBcjeRCwr3D+caY1ijpd7rnc8lzz/PkuYdECCEgrDDGlmXF43GWZV0YC+0un8/f3993dXU9PT0JgpDL5T43SChdXV0JgnB5eUkIqVarPM+XSiW6xYQLkGEYlmVfXl4AAENDQwCAer3eUYyEENM06aJSqUAIq9UqNcN7JIQYhlGr1RYWFg4ODlwYMmuqer3++vra3d0ty7JlWZ1m7UrX9eHh4XQ67Y8RY9xsNh3H8QXSll9fX5fLZbrmOK6vr+/m5sYwDOD24+HhoaqqmqYpijI1NZXJZIL5xsaGqqqpVIrjOJpoJBL5ynpvb+/8/JzGTD/c/v5+ACeEZLPZ7e1tur67u+N5PpfLUTNimmYqlZqZmVleXqZnTExM2LZdqVTm5uZa+cXFRTQatSxra2vLMAyGYWRZhhBubm7G43EAANB1HUIIIdR1nR6STqd5nn9+fm7LXZMQYpomQshtTKoYx3Hr6+u0wDQWTdMSiUR/f39b7h0KLMt6zfbd8/j4KAhCNpv9I29VhHyfZouLi6qqnp6efhalHW82m/64/iuRSHybZsViESF0dHTkc+flCKGxsbGfPEqS9JX12dnZ0tISxtiXRStHP8u2beCWKZPJuK/t7Oy8v78H8AABQoiiKJIkaZpGz3l7exNFMYD/8mVs2xZFUZZlbzmSyWS5XG7LT05OWsuHMXbbKAYAmJ2d9T2RTCYDuE/FYrHRaOzu7n7av2YRLEVRRkdHvX3a0cQFABQKBd+16chjPp8fGRmJxb41dXiPDw8PCKHJyUkfD+nRcZzj4+O1tbXWrZAeS6XS9PS077JS+SfFX2QYxvz8/MDAADVrtVpvb+/g4KAoihDCkN3jvcvj4+MrKyv0UhNCQv5J9fT0eM1oNOqSjrqn0Wisrq7qun57eytJEsYYhKujK8dxPj4+XJOG+Q+Ygl+7nqaLKQAAAABJRU5ErkJggg=='>
Isn't that great? Anything for you!
Well, I don't know if that is what you want because it seems that nobody does. But if you want to get this output
<img style="-webkit-user-select: none"
src="http://chart.apis.google.com/chart?cht=tx&chl=2+2%20\frac{3}{4}" />
you will have to use this code
public static String latex(String tex) {
String url = "http://chart.apis.google.com/chart?cht=tx&chl=" + tex;
return "<img style=\"-webkit-user-select: none\" src=\"" + url + "\"/>";
}
Also you might have to escape some characters like \ in the tex parameter.
To get your image, you should try to use ImageIO API like this
try {
URL url = new URL(urltext);
BufferedImage img = ImageIO.read(url);
} catch (IOException e) {
e.printStackTrace();
}
http://chart.apis.google.com/chart?cht=tx&chl=2+2%20\frac{3}{4}
Note that this URL is wrong. This shows 22 3/4 instead of the intended 2 + 2 3/4.The request parameter containing special characters needs to be URL-encoded as follows.
http://chart.apis.google.com/chart?cht=tx&chl=2%2B2%20%5Cfrac%7B3%7D%7B4%7D
You can achieve this with URLEncoder#encode().
String chl = "2+2 \\frac{3}{4}";
String url = "http://chart.apis.google.com/chart?cht=tx&chl=" + URLEncoder.encode(chl, "UTF-8");
Back to your functional requirement:
What should I do to embed the image into Html?
If your sole functional requirement is to display the image as available behind the mentioned URL by an HTML <img> element in a HTML/JSP page, then you need to use JSTL <c:url> tag to URL-encode request parameters containing special characters.
<%#taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
...
<c:url var="url" value="http://chart.apis.google.com/chart">
<c:param name="cht" value="tx" />
<c:param name="chl" value="2+2 \\frac{3}{4}" />
</c:url>
Then you can just refer it as ${url} (as declared in var attribute of <c:url>) in the src attribute of the HTML <img> element:
<img src="${url}" />
Reading a binary image stream from an URL as a character stream and storing in a string as you initially attempted makes completely no utter sense. You also wouldn't open image files in notepad, for example.
what's the best approach to read an image via URL and render it on a JSP page?
so far, I've coded two JSP pages.
EDIT START:
*Experimental: Obviously the ImageServ will be a servlet, not a jsp.
EDIT END:
index.jsp
<%page ....
<html>
......
<img src="ImageServ.jsp?url=http://serveripaddress/folder/image.jpg" />
.....
ImageServ.jsp
<%#page import="javax.imageio.ImageIO"%>
<%#page import="java.net.URL"%>
<%#page import="java.io.*, java.awt.*, java.awt.image.*,com.sun.image.codec.jpeg.*" %>
<%
try {
String urlStr = "";
if(request.getParameter("url") != null)
{
urlStr = request.getParameter("url");
URL url = new URL(urlStr);
BufferedImage img = null;
try{
img = ImageIO.read(url);
out.println(" READ SUCCESS" + "<br>");
}catch(Exception e) {
out.println("READ ERROR " + "<br>");
e.printStackTrace(new PrintWriter(out));
}
try {
response.setContentType("image/jpeg");
JPEGImageEncoder encoder = JPEGCodec.createJPEGEncoder(response.getOutputStream());
encoder.encode(img);
}catch(Exception ee) {
response.setContentType("text/html");
out.println("ENCODING ERROR " + "<br>");
ee.printStackTrace(new PrintWriter(out));
}
}
} catch (Exception e) {
e.printStackTrace(new PrintWriter(out));
}
%>
But this doesn't seem to be working:
all the time i see this error:
READ SUCCESS
ENCODING ERROR
java.io.IOException: reading encoded JPEG Stream
at sun.awt.image.codec.JPEGImageEncoderImpl.writeJPEGStream(Native Method)
at sun.awt.image.codec.JPEGImageEncoderImpl.encode(JPEGImageEncoderImpl.java:476)
at sun.awt.image.codec.JPEGImageEncoderImpl.encode(JPEGImageEncoderImpl.java:228)
Any ideas on how to get this working???
Your image data is already encoded so you can simply write it: ImageIO.write(img, "jpeg", response.getOutputStream());. You don't need to (and can't) use JPEGImageEncoder.
Classic question. Here's an example: http://www.exampledepot.com/egs/javax.servlet/GetImage.html
Also, don't do all that coding in a JSP - keep that for front-end rendering coding only; do the Java coding in a backend class.
Terrible and awful code. NEVER EVER write controller logic in a JSP that's why I have JSP to the guts. You cannot write binary data to a JSP output stream. The stream has already been initialized for text output. Put your logic in a servlet and pipe the input stream to the response output stream with Commons IO. This will work. If you still insist on that crappy solution, you will need to write a filter which completely wraps the response and serves binary data instead. See this for reference and examine its code. Good luck.
Edit:
doGet(...) {
response.setContentType("image/jpeg");
String url = request.getParameter("url");
...
InputStream is = ....getInputStream();
IOUtils.copy(is, response.getOutputStream());
// cleanup
} // done
This is how I pipe PDF from local disk but there is no difference to serving from a URL.