为什么这个code保持触发的SAXParseException：＆QUOT;＆QUOT; PI不能与XML＆QUOT开始;? [英] Why does this code keep triggering the SaxParseException : ""PI must not start with xml"?

问题描述

这code被用于从它的字符串重新presentation一个XML文档。它工作在我小的单元测试正常，但在我的实际的XML数据失败。它触发线是文档的DOC = db.parse（是）;

任何想法？

 公共静态文档FromString（字符串XML）
{
    //从http://www.rgagnon.com/javadetails/java-0573.html
    尝试
    {
        DBF的DocumentBuilderFactory = DocumentBuilderFactory.newInstance（）;
        的DocumentBuilder分贝= dbf.newDocumentBuilder（）;
        InputSource的是=新的InputSource（）;
        is.setCharacterStream（新StringReader（XML））;        文档的DOC = db.parse（是）;
        doc.normalize（）;        返回文档;
    }
    赶上（例外五）
    {
        Log.WriteError（无法解析XML，即XML.FromString（字符串））;
        返回null;
    }
}
 

解决方案

感谢您的帮助大家。

我丢弃＆LT;？XML版本=1.0编码=UTF-8＆GT; 来清除此错误。还是不明白这样做的原因可能是，但它仍然工作。

我又找到我缓冲的作家之一（从一个zip文件到内存解压时）没有被刷新，这是导致XML字符串是不完整的。

谢谢大家对你的帮助！

This code is used to generate a XML document from its String representation. It works fine in my small unit tests, but fails in my actual xml data. The line where it triggers is Document doc = db.parse(is);

Any ideas?

public static Document FromString(String xml)
{
    // from http://www.rgagnon.com/javadetails/java-0573.html
    try
    {
        DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance();
        DocumentBuilder db = dbf.newDocumentBuilder();
        InputSource is = new InputSource();
        is.setCharacterStream(new StringReader(xml));

        Document doc = db.parse(is);
        doc.normalize();

        return doc;
    }
    catch (Exception e)
    {
        Log.WriteError("Failed to parse XML", e, "XML.FromString(String)");
        return null;
    }
}

解决方案

Thanks for your help everyone.

I discarded the <?xml version="1.0" encoding="utf-8"?> which cleared this error. Still don't understand what the reason for this might be, but it worked nonetheless.

I went on to find one of my buffered writers (when extracting from a zip file into memory) wasn't being flushed, which was causing the xml string to be incomplete.

Thanks everyone for your help!

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