grantorremove.java

jbuilder9+weblogic8+oracle9开发的客户管理系统。服务器端采用EJB技术。可以对公司雇员和客户进行管理。

package testejb;

import javax.servlet.*;
import javax.servlet.http.*;
import java.io.*;
import java.util.*;
import javax.naming.*;
import javax.rmi.PortableRemoteObject;
import java.lang.*;


public class grantorremove extends HttpServlet implements SingleThreadModel {
  //Initialize global variables

  private baseclass basebean;
  private Context context;
  private EmployeePermHome employeePermHome = null;
  private EmployeePerm employeePerm = null;

  public void init() throws ServletException {
  }
  //Process the HTTP Post request
  public void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
    try{
      HttpSession session=request.getSession();
      String id=session.getAttribute("selectid").toString();
      String action=trans(request.getParameter("action").toString());
      String[] selectmyperm=request.getParameterValues("myperm");
      String[] grantperm=request.getParameterValues("myrestperm");
     basebean=new baseclass();
     context=basebean.getContext();
     Object ref = context.lookup("EmployeePermBean");
       //look up jndi name and cast to Home interface
     employeePermHome = (EmployeePermHome) PortableRemoteObject.narrow(ref, EmployeePermHome.class);

     employeePerm=employeePermHome.create();


    if(action.length()==4)
    { for(int i=0;i<selectmyperm.length;i++)
        employeePerm.revokePerm(id,selectmyperm[i]);

     }
    else
    { for(int i=0;i<grantperm.length;i++)
        employeePerm.grantPerm(id,grantperm[i]);
    }

    RequestDispatcher requestDispather=request.getRequestDispatcher("/allemployee.jsp");
    requestDispather.forward(request,response);
    }

    catch(Exception e)
    {RequestDispatcher requestDispather=request.getRequestDispatcher("/error.jsp");
    requestDispather.forward(request,response);}

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

  private String trans(String chi)
 {
  String result=null;
  byte temp[];
  try{
   temp=chi.getBytes("iso-8859-1");
   result=new String(temp);

  }
  catch(UnsupportedEncodingException e)
  {e.printStackTrace();}
  return result;
 }

}