java工具--XmlParse

最新推荐文章于 2024-01-25 17:01:37 发布

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最新推荐文章于 2024-01-25 17:01:37 发布

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分类专栏：工具类 xmlparse 文章标签： java

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xmlparse

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XmlParse是一个Java实现的XML文件解析工具，它使用DOM解析器读取XML字符串并将其转换为DOM文档。提供了将DOM文档转换为字符串的方法，以及解析XML中特定元素的方法，如parseMeth()，用于获取表格数据。

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xml文件解析工具

public class XmlParse
{
   DocumentBuilderFactory dbf;
   DocumentBuilder db;
   Document doc;

   public Document getDocument() {
       return doc;
   }

   public String doc2String() {
       return doc2String(doc);
   }

   //
   public static String doc2String(Document doc) {
       String str = null;
       try
       {
           DOMSource source = new DOMSource(doc);
           StringWriter writer = new StringWriter();
           Transformer transformer = TransformerFactory.newInstance().newTransformer();
           transformer.setOutputProperty("encoding", "UTF-8");
           transformer.setOutputProperty("indent", "no");
           transformer.transform(source, new StreamResult(writer));

           str = writer.getBuffer().toString();
           str = ExpressionDeal.replace(str, "\r", "");
           str = ExpressionDeal.replace(str, "\n", "");

           return str;
       } catch (Exception e) {
           PosLog.getLog("XmlParse").error(e);
           e.printStackTrace();
           return null;
       }

   }

   //
   public XmlParse(String arg)
   {
       dbf = null;
       db = null;
       doc = null;
       try
       {
           //DOM解析器工厂实例
           dbf = DocumentBuilderFactory.newInstance();
           //从DOM解析器工厂实例取得DOM 解析器
           db = dbf.newDocumentBuilder();
           //读取指定路径的XML文件，通过DocumentBuilder类进行DOM树的转换操作
           doc = db.parse(new InputSource(new StringReader(arg)));
       } catch (ParserConfigurationException e) {
           PosLog.getLog(getClass()).error(e);
           e.printStackTrace();
       } catch (SAXException e) {
           PosLog.getLog(getClass()).error(e);
           e.printStackTrace();
       } catch (IOException e) {
           PosLog.getLog(getClass()).error(e);
           e.printStackTrace();
       }
   }

   public static void main(String[] args)
   {
       String line = "<root><table><row><code>1</code><name>早班</name><btime>08:00</btime><etime>12:30</etime></row><row><code>2</code><name>晚班</name><btime>18:00</btime><etime>22:00</etime></row><row><code>5</code><name>全班</name><btime>08:00</btime><etime>20:00</etime></row><row><code>3</code><name>中班</name><btime>12:00</btime><etime>18:30</etime></row></table></root>";
       XmlParse xml = new XmlParse(line);
       Vector v = xml.parseMeth(0, new String[] { "code", "name", "btime1" });
       for (int i = 0; i < v.size(); i++)
       {
           String[] row = (String[]) v.elementAt(i);
           for (int j = 0; j < row.length; j++)
           {
               if (row[j].length() > 0)
                   System.out.print(row[j] + "      ");
               else
                   System.out.print("null         ");

           }
           System.out.println("");
       }
   }

   //
   public Vector parseMeth(int index, String[] arg)
   {
       Vector v = new Vector();
       NodeList nList = doc.getElementsByTagName("table");
       String[] row = null;
       NodeList nll = ((Element) nList.item(index < 0 ? nList.getLength() - 1 : index)).getElementsByTagName("row");

       for (int j = 0; j < nll.getLength(); j++) {
           row = new String[arg.length];
           for (int i = 0; i < arg.length; i++) {
               NodeList t = ((Element) nll.item(j)).getElementsByTagName(arg[i]);
               if ((t == null) || (t.item(0) == null)) {
                   row[i] = "";
               } else {
                   Text t1 = (Text) t.item(0).getFirstChild();
                   if (t1 != null)
                       row[i] = t1.getNodeValue();
                   else
                       row[i] = "";
               }
           }

v.add(row);
}

return v;
}

   //
   public Vector parseMeth(int index)
   {
       Vector v = new Vector();
       NodeList nList = doc.getElementsByTagName("table");
       NodeList nll = ((Element) nList.item(index < 0 ? nList.getLength() - 1 : index)).getElementsByTagName("row");

       for (int j = 0; j < nll.getLength(); j++) {
           NodeList t = ((Element) nll.item(j)).getElementsByTagName("*");
           String[] row = new String[t.getLength()];
           for (int k = 0; k < t.getLength(); k++) {
               Text t1 = (Text) t.item(k).getFirstChild();
               row[k] = t1.getNodeValue();
           }

v.add(row);
}

return v;
}

   //
   public static void setElementValue(Element element, String val)
   {
       Node node = element.getOwnerDocument().createTextNode(val);
       NodeList nl = element.getChildNodes();
       for (int i = 0; i < nl.getLength(); i++) {
           Node nd = nl.item(i);
           if (nd.getNodeType() == 3) {
               nd.setNodeValue(val);
               return;
           }
       }

element.appendChild(node);
}
}