如何将xml文件的内容写在一个String里，在接析？？？？？？？？？？？急

Question

InputStream in = new StringBufferInputStream( inString );
javax.xml.parsers.DocumentBuilder db = _documentBuilderFactory.newDocumentBuilder();
org.w3c.dom.Document document = db.parse( in );

Answer 1

楼上的回答反了吧。我自己的static方法，如何得到Document就看楼主的了。我使用的是apache的xercesimport org.apache.xml.serialize.*;
import org.w3c.dom.*;
import org.apache.xerces.dom.*;
import java.io.*;
import java.util.*;//放在什么地方自己看着办
public static String documentToString(org.w3c.dom.Document xmldoc){
try{
java.io.StringWriter o = new StringWriter();
OutputFormat of = new OutputFormat();
XMLSerializer serializer = new XMLSerializer(o,of);
serializer.asDOMSerializer();
serializer.serialize( xmldoc.getDocumentElement() ); return o.toString();
}
catch(IOException ioe){
ioe.printStackTrace();
return null;
}
}

Answer 2

wangwenyou(王文友) ：  public void doxml(){                try{
                        //获取一个XML解析器
                        DocumentBuilderFactory factory=DocumentBuilderFactory.newInstance();
                        DocumentBuilder builder=factory.newDocumentBuilder();
                        //解析XML文件
                        //Document document=builder.parse(new File("books.xml"));
                        String tmp =" <?xml version=\"1.0\" encoding=\"UTF-8\"?><catalog><book id=\"bk101\"><author>Gambardella, Matthew</author><title>XML Developer's Guide</title><publish_date><year>2000</year><month>10</month><day>1</day></publish_date><description>An in-depth look at creating applications with XML.</description></book></catalog>";
                        InputStream in = new StringBufferInputStream(tmp);
                        System.out.println("sdfsdf");
                        Document document=builder.parse(in);
                        //去掉XML文档中空白部分
                        document.normalize();
                        System.out.println("sdfsdfAA");
                        //获取根节点并打印根节点的名称
                        Element root=document.getDocumentElement();
                        System.out.println("根原始的名称:"+root.getTagName());
                        //获取所有的"book"标记，它是一个NodeList对象
                        NodeList books=root.getElementsByTagName("book");
                        //遍历NodeList
                        System.out.println("书本列表");
                        for(int i=0;i<books.getLength();i++){
                                //获取books中的每一个元素
                                Element book=(Element)books.item(i);
                                //获取每个"book"标记的"id"属性
                                String book_id=book.getAttribute("id");//或book.getAttributeNode("id").getValue();
                                System.out.println("序号:"+book_id);
                                //获取"book"标记下的每个元素
                                System.out.print("作者:");
                                System.out.println(book.getElementsByTagName("author").item(0).getFirstChild().getNodeValue());
                                System.out.print("标题:");
                                System.out.println(book.getElementsByTagName("title").item(0).getFirstChild().getNodeValue());
                                //获取"publish_date"元素
                                Element publishDate=(Element)book.getElementsByTagName("publish_date").item(0);
                                //获取"publish_date"元素下的每个子元素
                                String year=publishDate.getElementsByTagName("year").item(0).getFirstChild().getNodeValue();
                                String month=publishDate.getElementsByTagName("month").item(0).getFirstChild().getNodeValue();
                                String day=publishDate.getElementsByTagName("day").item(0).getFirstChild().getNodeValue();
                                System.out.println("出版日期:"+year+"年"+month+"月"+day+"日");
                                System.out.print("描述:");
                                System.out.println(book.getElementsByTagName("description").item(0).getFirstChild().getNodeValue());
                                System.out.println("--------------------");
                        }
                }
                catch(Exception e2){
                   e2.printStackTrace();
                }
}出错？？？

Answer 3

谢谢 wangwenyou(王文友) 很感谢。。

Answer 4

异常信息是什么？
有可能两个原因
1、=" <?改为="<? 。PI前别有空格；
2、尽量使用'代替\"。

Answer 5

java.io.PrintWriter out = response.getWriter();
TransformerFactory tFactory = TransformerFactory.newInstance();
Transformer transformer = tFactory.newTransformer();
transformer.setOutputProperty(OutputKeys.ENCODING,"gb2312");
StreamResult result = new StreamResult(out);
transformer.transform(new DOMSource(document),result);
String tmp = out.toString();这就是string了。