如何将字符从Oracle编码为XML?

And*_*ard 8 java xml oracle encoding

在我的环境中,我使用Java将结果集序列化为XML.它基本上是这样的:

//foreach column of each row
xmlHandler.startElement(uri, lname, "column", attributes);
String chars = rs.getString(i);
xmlHandler.characters(chars.toCharArray(), 0, chars.length());
xmlHandler.endElement(uri, lname, "column");
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在Firefox中,XML看起来像这样:

<row num="69004">
    <column num="1">10069</column>
    <column num="2">sd&#26;</column>
    <column num="3">FCVolume                      </column>
</row>
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但是当我解析XML时,我得到了a

org.xml.sax.SAXParseException:字符引用"  "是无效的XML字符.

我现在的问题是:我必须替换哪些字符,或者如何编码我的字符,它们将是有效的XML?

And*_*ard 7

我在Xml规范中找到了一个有趣的列表:根据该列表,它不鼓励使用字符#26(十六进制:#x1A).

还不鼓励在以下范围中定义的字符.它们是控制字符或永久未定义的Unicode字符

查看完整的范围.

此代码从String中替换所有无效的Xml Utf8:

public String stripNonValidXMLCharacters(String in) {
    StringBuffer out = new StringBuffer(); // Used to hold the output.
    char current; // Used to reference the current character.

    if (in == null || ("".equals(in))) return ""; // vacancy test.
    for (int i = 0; i < in.length(); i++) {
        current = in.charAt(i);
        if ((current == 0x9) ||
            (current == 0xA) ||
            (current == 0xD) ||
            ((current >= 0x20) && (current <= 0xD7FF)) ||
            ((current >= 0xE000) && (current <= 0xFFFD)) ||
            ((current >= 0x10000) && (current <= 0x10FFFF)))
            out.append(current);
    }
    return out.toString();
}    
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它来自无效的XML字符:当有效的UTF8不代表有效的XML时

但有了这个,我还有UTF-8的比较问题:

org.xml.sax.SAXParseException: Invalid byte 1 of 1-byte UTF-8 sequence
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在阅读XML之后 - 从servlet返回XML作为UTF-8我刚尝试了如果我将Contenttype设置为这样会发生什么:

response.setContentType("text/xml;charset=utf-8");
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它工作....