CODEWITHSUNDEEP
javaencodingutf-8
user2688323
user2688323

Reputation: 15

UTF 8 encoding error: should never happen ,java exception

In the web application service method, I am trying to parse a xml using VTD-XML. After reading it from the database, I'm calling the code below.
It's failing to parse and throws an exception:

UTF 8 encoding error: should never happen

The same code is working in separate class in main method. I am using NetBeans IDE.

Class.forName("com.mysql.jdbc.Driver");
Connection con = DriverManager.getConnection("jdbc:mysql://localhost:3306/ebuild_woym_purple_clone1", "root", "root");
Statement st = con.createStatement();
st.executeQuery("select * from revision where name='First');
ResultSet rs = st.getResultSet();
if(rs.next()){
    String xml = rs.getString(9); 
    System.out.println(xml);
    vg.setDoc(xml.getBytes());
    vg.parse(false); //vtd-xml parser object , throwing exception here
    System.out.println("good");
}

Upvotes: 2

Views: 1769

Answers (1)

Andreas
Andreas

Reputation: 159096

The error message indicates that the XML byte array is parsed using UTF-8 encoding, which is to be expected since that is the recommended encoding for XML.

However, when you call getBytes() on a String, you get (quoting javadoc):

Encodes this String into a sequence of bytes using the platform's default charset, storing the result into a new byte array.

Since it is extremely unlikely that you default charset is UTF-8, you'll get something else, and parsing that as UTF-8 will then fail.

To fix it, use getBytes(Charset charset), as in:

vg.setDoc(xml.getBytes(StandardCharsets.UTF_8));

Upvotes: 3

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