java 服务器端扫描文件夹下xml文件，并导入到Oracle数据库

老师让用jsp做一个B/S架构的项目，其中有个功能是服务器自动扫描某个文件夹里是否有xml的文件，如果有，把里面的数据导入到Oracle里。求哥哥姐姐帮个忙，最好能来点代码^_^

import javax.servlet.*;
import javax.servlet.http.*;
import java.io.*;
import java.util.*;
import javax.xml.parsers.*;
import javax.xml.transform.*;
import org.w3c.dom.*;
import org.xml.sax.*;
import javax.xml.transform.dom.DOMSource;
import javax.xml.transform.stream.StreamResult;

public class CreateXMLForEnterServelet extends HttpServlet {
private static final String CONTENT_TYPE = "text/html; charset=GBK";

//Initialize global variables
public void init() throws ServletException {
}

//Process the HTTP Get request
public void doGet(HttpServletRequest request, HttpServletResponse response) throws
ServletException, IOException {
response.setContentType(CONTENT_TYPE);
PrintWriter out = response.getWriter();
//获取传递过来的值
String databaseType = request.getParameter("select");
String userName = request.getParameter("userName");
String userPassword = request.getParameter("userPassword");
String dbName = request.getParameter("dbName");
String dbSouse = request.getParameter("dbSouces");
int port = Integer.parseInt(request.getParameter("portNum"));
Document doc;
Element root;
try
{
DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance();
DocumentBuilder db = dbf.newDocumentBuilder();
String path = request.getRealPath("/");
File file = new File( path + "/" + "DBInfo.xml");
if(!file.exists())
{
doc = db.newDocument();
root = doc.createElement("DBInfo");
doc.appendChild(root);
}
else
{
doc = db.parse(file);
root = doc.getDocumentElement();
}

//添加子节点
Element rowNode = doc.createElement(databaseType);
root.appendChild(rowNode);
Node node = doc.createElement("Driver");
Node nodestr = doc.createElement("ConnectString");
Node serverName = doc.createElement("ServerName");
Node nodeName = doc.createElement("UserName");
Node nodePWD = doc.createElement("PassWord");
Node nodePort = doc.createElement("Port");
Node nodeDB = doc.createElement("DataBase");

rowNode.appendChild(node);
rowNode.appendChild(nodestr);
rowNode.appendChild(serverName);
rowNode.appendChild(nodeDB);
rowNode.appendChild(nodeName);
rowNode.appendChild(nodePWD);
rowNode.appendChild(nodePort);

String nodeValue;//Driver
String nodeConStr;//连接字符串
if(databaseType.equals("ORACLE"))
{
nodeValue = "oracle.jdbc.driver.OracleDriver";
nodeConStr = "jdbc:oracle:thin";
}
else
{
nodeValue = "com.microsoft.jdbc.sqlserver.SQLServerDriver";
nodeConStr = "jdbc:microsoft:sqlserver";
}
Text text = doc.createTextNode(nodeValue);
Text textstr = doc.createTextNode(nodeConStr);
Text textName = doc.createTextNode(userName);
Text textPWD = doc.createTextNode(userPassword);
Text textServer = doc.createTextNode(dbName);
Text textPort = doc.createTextNode(String.valueOf(port));
Text textDB = doc.createTextNode(dbSouse);

node.appendChild(text);
nodestr.appendChild(textstr);
nodeName.appendChild(textName);
nodePWD.appendChild(textPWD);
serverName.appendChild(textServer);
nodePort.appendChild(textPort);
nodeDB.appendChild(textDB);

DOMSource doms = new DOMSource(doc);

StreamResult sr = null;

TransformerFactory tff = TransformerFactory.newInstance();
Transformer tf = tff.newTransformer();
sr = new StreamResult(file);
tf.transform(doms,sr);
out.println("<h1>Create XMLFile Is Ok!!</h1>");
request.getRequestDispatcher("index.jsp").forward(request,response);
}
catch(Exception ex)
{
out.println("<h1>生成 XML 配置文件时出现错误：</h1><br/><h4>"+ex+"</h4>");
out.println("<br/><br/>");
out.print("<a href='index.jsp'>【点这里回到首页】</a>");

}

out.close();

}

//Process the HTTP Post request
public void doPost(HttpServletRequest request, HttpServletResponse response) throws
ServletException, IOException {
doGet(request, response);
}

//Clean up resources
public void destroy() {
}
}

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