这个怎么做啊，Servlet里面service方法不能写xml的代码运行无效啊

Question

本帖最后由 fangmingshijie 于 2014-04-02 09:12:57 编辑

Answer 1

Servlet里面service方法不能写xml的代码运行无效啊， 这个为什么无效？把代码贴出来吧，大家一起看看。

Answer 2

package org.fkjaava.com;import java.io.FileOutputStream;
import java.io.IOException;
import java.io.OutputStream;
import java.io.PrintWriter;
import java.util.ArrayList;
import java.util.List;import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;import org.dom4j.Document;
import org.dom4j.DocumentHelper;
import org.dom4j.Element;
import org.dom4j.io.OutputFormat;
import org.dom4j.io.XMLWriter;/**
 * Servlet implementation class readhtml
 */
public class readhtml extends HttpServlet {
private static final long serialVersionUID = 1L;
       
    /**
     * @see HttpServlet#HttpServlet()
     */
    public readhtml() {
        super();
        // TODO Auto-generated constructor stub
    } /**
 * @see HttpServlet#doGet(HttpServletRequest request, HttpServletResponse response)
 */
protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { request.setCharacterEncoding("utf-8");
response.setCharacterEncoding("utf-8");
response.setContentType("text/html;charset=utf-8");
PrintWriter out=response.getWriter();
String userName=request.getParameter("userName");
String pass=request.getParameter("pass");
String sex=request.getParameter("sex");
String hoobys=request.getParameter("hobbys");
String address=request.getParameter("address");
String info=request.getParameter("info");
String hidden=request.getParameter("hidden");
out.println(userName+"<br>");
out.println(pass+"<br>");
out.println(sex+"<br>");
out.println(hoobys+"<br>");
out.println(address+"<br>");
out.println(info+"<br>");
out.println(hidden+"<br>");
List<User> list=new ArrayList<>();
User user=new User();
user.setUserName(userName);
user.setPass(pass);
user.setSex(sex);
user.setHobbys(hoobys);
user.setAddress(address);
user.setInfo(info);
user.setHidden(hidden);
list.add(user);


Document doc=DocumentHelper.createDocument();
Element root_node =doc.addElement("Users");
for(User use:list){

Element user_node=root_node.addElement("user");
user_node.addElement("userName").setText(use.getUserName());
user_node.addElement("sex").setText(use.getSex());
user_node.addElement("address").setText(use.getAddress());
}
OutputStream os=new FileOutputStream("./user2.xml");
OutputFormat of=OutputFormat.createPrettyPrint();
XMLWriter writer=new XMLWriter(os, of);
writer.write(doc);

writer.close();
System.out.println("写出xml成功!");

}}

Answer 3

用dom4j来读或写，就服务器中读取的到的信息保存到xml里面去啊