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在J2ME中,我应该如何从流中删除无效的XML字符?org.xml.sax。SAXParseException:无效字符

rim-4.2 sax java-me blackberry xml

JR Lawhorne · 技术社区 · 17 年前

org.xml.sax.SAXParseException: Invalid character '' encountered .

现有代码:

DefaultHandler
URL

hconn = (HttpConnection) Connector.open(url,Connector.READ_WRITE,true);

...

try{
   XMLParser parser = new XMLParser();
   InputStream input = hconn.openInputStream();
   parser.parse(input, handler);
   input.close();
} catch (SAXException e) {
   Logger.getInstance().error("getViaHTTP() - SAXException - "+e.toString());
}

2 回复 | 直到 14 年前

Matthew Flaschen 17 年前

很难在InputStream上附加剥离器,因为流是面向字节的。在a上做这件事可能更有意义 Reader

public class StripReader extends Reader
{
    private Reader in;
    public StripReader(Reader in)
    {
    this.in = in;
    }

    public boolean markSupported()
    {
    return false;
    }

    public void mark(int readLimit)
    {
    throw new UnsupportedOperationException("Mark not supported");
    }

    public void reset()
    {
    throw new UnsupportedOperationException("Reset not supported");
    }

    public int read() throws IOException
    {
    int next;
    do
    {
        next = in.read();
    } while(!(next == -1 || Character.isValidCodePoint(next)));

    return next; 
    }

    public void close() throws IOException
    {
    in.close();
    }

    public int read(char[] cbuf, int off, int len) throws IOException
    {
    int i, next = 0;
    for(i = 0; i < len; i++)
    {
        next = read();
        if(next == -1)
        break;
        cbuf[off + i] = (char)next;
    }
    if(i == 0 && next == -1)
        return -1;
    else
        return i;
    }

    public int read(char[] cbuf) throws IOException
    {
    return read(cbuf, 0, cbuf.length);
    }
}

InputSource