deletestudsecspecialtyreg.java

servlet做控制层示例

// Decompiled by Jad v1.5.7g. Copyright 2000 Pavel Kouznetsov.
// Jad home page: http://www.geocities.com/SiliconValley/Bridge/8617/jad.html
// Decompiler options: packimports(3) fieldsfirst ansi 
// Source File Name:   DeleteStudSecSpecialtyReg.java

package com.saintbo.servlet.student;

import com.saintbo.entity.student.TblSecSpecialtyReg;
import com.saintbo.javabean.sys.UserInfo;
import com.saintbo.servlet.MyExtendedServlet;
import com.saintbo.session.student.StudentSessionLocal;
import com.saintbo.session.student.StudentSessionLocalHome;
import com.saintbo.util.upload.RequestHashtable;
import com.saintbo.util.upload.UploadRequest;
import java.io.IOException;
import java.io.PrintStream;
import javax.naming.InitialContext;
import javax.servlet.*;
import javax.servlet.http.HttpSession;

public class DeleteStudSecSpecialtyReg extends MyExtendedServlet
{

    public DeleteStudSecSpecialtyReg()
    {
    }

    public void handle()
        throws IOException, ServletException
    {
        UserInfo userInfo = (UserInfo)session.getAttribute("USERINFO");
        int userAuthority = super.checkAuthority(userInfo, 1, 0);
        if(userAuthority != 1)
            return;
        reqInfo = UploadRequest.upload(req);
        String studentID = "";
        String errorMessage = "";
        boolean result = false;
        try
        {
            java.util.Date regDate = null;
            if(userInfo.getUserType().equals(new Integer(1)))
                studentID = userInfo.getUserID();
            else
            if(userInfo.getUserType().equals(new Integer(3)))
                studentID = (String)reqInfo.get("StudentID");
            Long rowsID = new Long((String)reqInfo.get("RowsID"));
            TblSecSpecialtyReg secSpecialtyReg = null;
            if(rowsID != null && studentID != null && !studentID.trim().equals(""))
            {
                InitialContext jndiContext = new InitialContext();
                StudentSessionLocalHome home = (StudentSessionLocalHome)jndiContext.lookup("StudentSessionLocal");
                StudentSessionLocal local = home.create();
                secSpecialtyReg = local.getStudSecSpecialtyRegByID(rowsID);
                if(secSpecialtyReg != null && secSpecialtyReg.getRowsID() != null)
                {
                    if(userInfo.getUserType().equals(new Integer(1)))
                    {
                        if(secSpecialtyReg.getStatus().equals("0"))
                        {
                            secSpecialtyReg.remove();
                            result = true;
                        } else
                        {
                            errorMessage = "此第二专业/辅修信息已经回复，您不能删除.";
                        }
                    } else
                    if(userInfo.getUserType().equals(new Integer(3)))
                    {
                        secSpecialtyReg.remove();
                        result = true;
                    }
                } else
                {
                    errorMessage = "由于某些不知明的原因没有成功删除学生第二专业/辅修信息.";
                }
                local.remove();
                jndiContext.close();
            } else
            {
                errorMessage = "传进来的学生学号或第二专业/辅修信息的关键定不能为空.";
            }
            if(result)
            {
                getServletContext().getRequestDispatcher("/student/studsecspecialtyreglist.jsp?StudentID=" + studentID).forward(req, res);
            } else
            {
                session.setAttribute("ERRORMESSAGE", errorMessage);
                getServletContext().getRequestDispatcher("/error/error.jsp").forward(req, res);
            }
        }
        catch(Exception e)
        {
            errorMessage = "当删除学生第二专业/辅修信息时出现错误.";
            System.out.println(errorMessage);
            result = false;
            e.printStackTrace();
            session.setAttribute("ERRORMESSAGE", errorMessage);
            getServletContext().getRequestDispatcher("/error/error.jsp").forward(req, res);
        }
    }
}