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/ 10 Years ago, wed, august 13, 2014, 12:00:00
I am trying to pass this strings in the URL which contain special characters and the only way I can get it to work is with JavaScript encodeURIComponent('testerๆ๘ๅ') which produces tester%C3%A6%C3%B8%C3%A5
Everything I try to do in Java produces different encodings, and do not work on the other end... Any idea how I can get testerๆ๘ๅ encoded to tester%C3%A6%C3%B8%C3%A5 in Java? Thanks in advance!
package com.mastercard.cp.sdng.domain.user;
import org.apache.commons.lang.StringUtils;
import javax.script.ScriptEngine;
import javax.script.ScriptEngineManager;
import javax.script.ScriptException;
import java.io.UnsupportedEncodingException;
import java.net.URI;
import java.net.URISyntaxException;
import java.net.URLEncoder;
public class UrlEncodingSample
{
public static void main(String[] args)
{
String userId = dummy;
try
{
validateEncoding(userId);
userId = testeræøå;
validateEncoding(userId);
userId = URLEncoder.encode(userId);
validateEncoding(userId);
}
catch (UnsupportedEncodingException e)
{
e.printStackTrace(); //To change body of catch statement use File | Settings | File Templates.
}
}
private static void validateEncoding(String userId) throws UnsupportedEncodingException
{
System.out.println(------ START TESTING WITH USER ID = '+userId+' ----------------------);
System.out.println(Test URLEncoder.encode(userId): + URLEncoder.encode(userId));
System.out.println(Test URLEncoder.encode(userId,UTF-8): + URLEncoder.encode(userId, UTF-8));
System.out.println(Test URLEncoder.encode(userId,UTF-16): + URLEncoder.encode(userId,UTF-16));
System.out.println(Test URLEncoder.encode(userId,UTF-16LE): + URLEncoder.encode(userId,UTF-16LE));
System.out.println(Test URLEncoder.encode(userId,UTF-16BE): + URLEncoder.encode(userId,UTF-16BE));
ScriptEngine engine = new ScriptEngineManager().getEngineByName(JavaScript);
try
{
System.out.println(Test engine.eval(encodeURIComponent(\\+userId+\\)): +
engine.eval(encodeURIComponent(+userId+)));
}
catch (ScriptException e)
{
e.printStackTrace(); //To change body of catch statement use File | Settings | File Templates.
}
System.out.println(Test encodeURIComponent(userId): + encodeURIComponent(userId));
try
{
System.out.println(TEST new URI(userId).toASCIIString(): + new URI(userId).toASCIIString());
}
catch (URISyntaxException e)
{
e.printStackTrace(); //To change body of catch statement use File | Settings | File Templates.
}
System.out.println(------ END TESTING WITH USER ID = '+userId+' ----------------------nn);
}
public static String encodeURIComponent(String input) {
if(StringUtils.isEmpty(input)) {
return input;
}
int l = input.length();
StringBuilder o = new StringBuilder(l * 3);
try {
for (int i = 0; i < l; i++) {
String e = input.substring(i, i + 1);
if (ALLOWED_CHARS.indexOf(e) == -1) {
byte[] b = e.getBytes(utf-8);
o.append(getHex(b));
continue;
}
o.append(e);
}
return o.toString();
} catch(UnsupportedEncodingException e) {
e.printStackTrace();
}
return input;
}
private static String getHex(byte buf[]) {
StringBuilder o = new StringBuilder(buf.length * 3);
for (int i = 0; i < buf.length; i++) {
int n = (int) buf[i] & 0xff;
o.append(%);
if (n < 0x10) {
o.append(0);
}
o.append(Long.toString(n, 16).toUpperCase());
}
return o.toString();
}
public static final String ALLOWED_CHARS = abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789-_.!~*'();
}
Output of above class is this:
------ START TESTING WITH USER ID = 'dummy' ----------------------
Test URLEncoder.encode(userId): dummy
Test URLEncoder.encode(userId,UTF-8): dummy
Test URLEncoder.encode(userId,UTF-16): dummy
Test URLEncoder.encode(userId,UTF-16LE): dummy
Test URLEncoder.encode(userId,UTF-16BE): dummy
Test engine.eval(encodeURIComponent(+userId+)): dummy
Test encodeURIComponent(userId): dummy
TEST new URI(userId).toASCIIString(): dummy
------ END TESTING WITH USER ID = 'dummy' ----------------------
------ START TESTING WITH USER ID = 'testerๆ๘ๅ' ----------------------
Test URLEncoder.encode(userId): tester%E6%F8%E5
Test URLEncoder.encode(userId,UTF-8): tester%E0%B9%86%E0%B9%98%E0%B9%85
Test URLEncoder.encode(userId,UTF-16): tester%FE%FF%0E%46%0E%58%0E%45
Test URLEncoder.encode(userId,UTF-16LE): tester%46%0E%58%0E%45%0E
Test URLEncoder.encode(userId,UTF-16BE): tester%0E%46%0E%58%0E%45
Test engine.eval(encodeURIComponent(+userId+)): tester%e0%b9%86%e0%b9%98%e0%b9%85
Test encodeURIComponent(userId): tester%E0%B9%86%E0%B9%98%E0%B9%85
TEST new URI(userId).toASCIIString(): tester%E0%B9%86%E0%B9%98%E0%B9%85
------ END TESTING WITH USER ID = 'testerๆ๘ๅ' ----------------------
------ START TESTING WITH USER ID = 'tester%E6%F8%E5' ----------------------
Test URLEncoder.encode(userId): tester%25E6%25F8%25E5
Test URLEncoder.encode(userId,UTF-8): tester%25E6%25F8%25E5
Test URLEncoder.encode(userId,UTF-16): tester%FE%FF%00%25E6%FE%FF%00%25F8%FE%FF%00%25E5
Test URLEncoder.encode(userId,UTF-16LE): tester%25%00E6%25%00F8%25%00E5
Test URLEncoder.encode(userId,UTF-16BE): tester%00%25E6%00%25F8%00%25E5
Test engine.eval(encodeURIComponent(+userId+)): tester%25E6%25F8%25E5
Test encodeURIComponent(userId): tester%25E6%25F8%25E5
TEST new URI(userId).toASCIIString(): tester%E6%F8%E5
------ END TESTING WITH USER ID = 'tester%E6%F8%E5' ----------------------
Note: As I was writing this up, it occurred to me that I could use the URLEncoder.encode(userId, UTF-8) as long as I used the proper decoder on the other side... but I was still trying to find a way to encode it to match the JavaScript encodeURIComponent function which apparently works without the need to decode it on the other side. :)
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