modifybalance.java

网上银行EJB版本

package mypackage;
import javax.servlet.*;
import javax.servlet.http.*;
import java.io.IOException;
import javax.naming.Context;
import javax.naming.InitialContext;
import javax.rmi.PortableRemoteObject;
import javax.naming.NamingException;

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

  public void init(ServletConfig config) throws ServletException
  {
    super.init(config);
  }

  public void service(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException
  {
    request.setCharacterEncoding("GBK");
    response.setContentType(CONTENT_TYPE);
    int success = 0;
    String accounts = request.getParameter("accounts");
    String balance = request.getParameter("balance");
    try{
      Context context = new InitialContext();
      TaskHome taskHome = (TaskHome)PortableRemoteObject.narrow(context.lookup("Task"), TaskHome.class);
      Task task;
      task = taskHome.create();
      success = task.modifyBalance(accounts, balance);
    }
    catch(Throwable ex){
      ex.printStackTrace();
    }
  }
}