用Java實現可保存狀態的數據庫生成XML樹，源碼來了(9)

時間：2006/7/19 5:38:30

作者：佚名

人氣：30

6.3.2.Servlet源碼

1.RefreshServlet.java

package com.sitechasia;

import javax.servlet.*;

import javax.servlet.http.*;

import java.io.*;

import java.util.*;

import java.sql.*;

import sun.jdbc.rowset.*;

import javax.sql.*;

import javax.rmi.*;

import javax.naming.*;

import weblogic.html.*;

import com.sitechasia.ejb.*;

public class RefreshServlet extends HttpServlet {

PrintWriter out;

ResultEdit re;

private static final String CONTENT_TYPE = "text/html";

private Object ref;

private static String querySQL = null;

private static String HostIP = null;

private static String HostPort = null;

public void init() throws ServletException {

}

public void service(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {

try{

response.setContentType(CONTENT_TYPE);

out = response.getWriter();

HttpSession session=request.getSession(true);

if (request.getMethod().equals("POST")){

querySQL = request.getParameter("sql");

HostIP = request.getParameter("ip");

HostPort = request.getParameter("port");

Context ctx =getInitialContext(HostIP,HostPort);

ref = ctx.lookup("ResultEdit");

ResultEditHome home = (ResultEditHome) PortableRemoteObject.narrow(ref, ResultEditHome.class);

re = home.create();

re.setRowSet(querySQL);

session.setAttribute("ResultEditHandle",re.getHandle());

session.setAttribute("ResultEditHostIP",HostIP);

session.setAttribute("ResultEditHostPort",HostPort);

}

if (session.getAttribute("ResultEditHandle")!=null){

out.println("

Enter");

out.println("

");

out.println("

Refresh......go to XMLServlet");

}

else {

out.println("

no EJB message");

out.println("

");

out.println("

Refresh...... return RefreshPost.html");

}

}

catch(Exception e){

System.out.println("error:"+e.getMessage());

e.printStackTrace();

}

}

static public Context getInitialContext(String host,String port) throws Exception {

Properties p = new Properties();

p.put(Context.INITIAL_CONTEXT_FACTORY,"weblogic.jndi.WLInitialContextFactory");

p.put(Context.PROVIDER_URL,"t3://"+host+":"+port);

return new InitialContext(p);

}

static public Context getInitialContext() throws Exception {

Properties p = new Properties();

p.put(Context.INITIAL_CONTEXT_FACTORY,"weblogic.jndi.WLInitialContextFactory");

p.put(Context.PROVIDER_URL,"t3://127.0.0.1:80");

return new InitialContext(p);

}

}

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