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<td class="content"><strong> 实战留言簿(EJB,Struts应用篇)
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<td><p>作者：<a href="http://www.blueidea.com/common/contact.asp?type=%D7%F7%D5%DF&username=maxuan" target="_blank">maxuan</a> 时间： 2003-09-14 文档类型：原创 来自：<a href="http://www.blueidea.com/">蓝色理想</a>
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<p class="list"><img src="737_4.asp_files/arrow_orange.gif" width="4" height="13"> 第 1 页 <a href="http://www.blueidea.com/tech/program/2003/737.asp">实战留言簿(EJB,Struts应用篇)[1]</a><br><img src="737_4.asp_files/arrow_orange.gif" width="4" height="13"> 第 2 页 <a href="http://www.blueidea.com/tech/program/2003/737_2.asp">实战留言簿(EJB,Struts应用篇)[2]</a><br><img src="737_4.asp_files/arrow_orange.gif" width="4" height="13"> 第 3 页 <a href="http://www.blueidea.com/tech/program/2003/737_3.asp">实战留言簿(EJB,Struts应用篇)[3]</a><br><img src="737_4.asp_files/arrow_red.gif" width="4" height="13"> 第 4 页 实战留言簿(EJB,Struts应用篇)[4]<br><img src="737_4.asp_files/arrow_orange.gif" width="4" height="13"> 第 5 页 <a href="http://www.blueidea.com/tech/program/2003/737_5.asp">实战留言簿(EJB,Struts应用篇)[5]</a><br><img src="737_4.asp_files/arrow_orange.gif" width="4" height="13"> 第 6 页 <a href="http://www.blueidea.com/tech/program/2003/737_6.asp">实战留言簿(EJB,Struts应用篇)[6]</a><br></p>
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<p> 有了Struts资源的调用，我们继续来完成JAVABEAN部分的编写！首先，我们编写PAction.java文件来完成连接等初始化工作。<br><strong>PAction.java源代码：</strong><br><textarea class="codeTextarea">package guestbook.maxuan.action;
import javax.naming.*;
import java.util.Properties;
import java.util.*;
import javax.rmi.PortableRemoteObject;
import java.io.IOException;
import java.lang.reflect.InvocationTargetException;
import java.util.Locale;
import java.util.Vector;
import javax.servlet.RequestDispatcher;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpSession;
import javax.servlet.http.HttpServletResponse;
import org.apache.commons.beanutils.PropertyUtils;
import org.apache.struts.action.ActionError;
import org.apache.struts.action.ActionErrors;
import org.apache.struts.action.Action;
import org.apache.struts.action.ActionForm;
import org.apache.struts.action.ActionForward;
import org.apache.struts.action.ActionMapping;
import org.apache.struts.action.ActionServlet;
import org.apache.struts.util.MessageResources;
import guestbook.maxuan.ejb.control.*;
public class PAction extends Action{
//public ActionErrors errors = new ActionErrors();
public BookControl control = null;
public Context getInitialContext() {
String url = "t3://127.0.0.1:";
String user = null;
String password = null;
Properties properties = null;
ActionServlet actionServlet = this.getServlet();
String port = actionServlet.getServletConfig().getInitParameter("port");
url = url + port;
try {
properties = new Properties();
properties.put(Context.INITIAL_CONTEXT_FACTORY,
"weblogic.jndi.WLInitialContextFactory");
properties.put(Context.PROVIDER_URL, url);
if (user != null) {
properties.put(Context.SECURITY_PRINCIPAL, user);
properties.put(Context.SECURITY_CREDENTIALS, password == null ? "" : password);
}
return new InitialContext(properties);
}
catch(Exception e) {
e.printStackTrace();
}
return null;
}
public BookControl getInitControl( ){
BookControl control = null;
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