Remove non-ASCII characters from String in Java

Question

I have a URI that contains non-ASCII characters like :

http://www.abc.de/qq/qq.ww?MIval=typo3_bsl_int_Smtliste&p_smtbez=Schmalbl�ttrigeSomerzischeruchtanb

Answer 1

No no no no no, this is not ASCII ... [^\x20-\x7E]

This is real ascii: [^\x00-\x7F]

Otherwise it will trim out newlines and other special characters that are part of ascii table!

Answer 2

To remove the Non- ASCII characters from String, below code worked for me.

String str="<UPC>616043287409ÂÂÂÂ</UPC>";

str = str.replaceAll("[^\\p{ASCII}]", "");

Output:

<UPC>616043287409</UPC>

Answer 3

Use Guava CharMatcher

String onlyAscii = CharMatcher.ascii().retainFrom(original)

Answer 4

I'm guessing that the source of the URL is more at fault. Perhaps you're fixing the wrong problem? Removing "strange" characters from a URI might give it an entirely different meaning.

With that said, you may be able to remove all of the non-ASCII characters with a simple string replacement:

string fixed = original.replaceAll("[^\\x20-\\x7e]", "");

Or you can extend that to all non-four-byte-UTF-8 characters if that doesn't cover the "�" character:

string fixed = original.replaceAll("[^\\u0000-\\uFFFF]", "");

Answer 5

yourstring=yourstring.replaceAll("[^\\p{ASCII}]", "");