如何删除 Unicode 字符串 Java

Question

I have written a Springboot app that reads from DynamoDB and generates a XML. In one of the items in the table, there is a field that has the string ' '. This is a unicode string that denotes End Of Medium. Please refer to the screenshot below to see how it looks in DynamoDB.

The Springboot app reads it. With IntelliJ, I inspected the variable that holds this value. It looks like this

When I write this value to an XML, the XML tag looks like this.

There is another program that is trying to parse this XML. It fails complaining

XML character (Unicode: 0x19) at lineNumber: ___ ; columnNumber: ___ ;

I want to check if a string contains a Unicode string. If it contains, I want to remove the same. I tried using

• Apache library:StringEscapeUtils.unescapeJava(test2)
• replaceAll("\P{Print}", "");

The problem with these, is that they remove also characters like é . For example: L'Oréal becomes L'Oral OR LOral

Any suggestions will be appreciated. Thanks.

Answer 1

As @g00se mentioned, the below code removes all not printable characters including \n \r

input.replaceAll("\\p{Cntrl}", ""); 

The below code removes, End of Medium unicode string alone.

input.replaceAll(unicodeString, "\u0019");