modifystudexamsuspend.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:   ModifyStudExamSuspend.java

package com.saintbo.servlet.student;

import com.saintbo.entity.student.TblExamSuspend;
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.text.DateFormat;
import javax.naming.InitialContext;
import javax.servlet.*;
import javax.servlet.http.HttpSession;

public class ModifyStudExamSuspend extends MyExtendedServlet
{

    public ModifyStudExamSuspend()
    {
    }

    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 = "";
        Long scoreID = null;
        String feedback = "";
        String applyStatus = "0";
        String examStatus = "0";
        if(userInfo.getUserType().equals(new Integer(1)))
            studentID = userInfo.getUserID();
        else
        if(userInfo.getUserType().equals(new Integer(3)))
        {
            studentID = (String)reqInfo.get("StudentID");
            scoreID = new Long((String)reqInfo.get("ScoreID"));
            feedback = (String)reqInfo.get("Feedback");
            applyStatus = (String)reqInfo.get("ApplyStatus");
            examStatus = (String)reqInfo.get("ExamStatus");
        }
        Long rowsID = new Long((String)reqInfo.get("RowsID"));
        String years = (String)reqInfo.get("Years");
        String termID = (String)reqInfo.get("TermID");
        String courseID = (String)reqInfo.get("CourseID");
        String strApplyDate = (String)reqInfo.get("ApplyDate");
        String applyReason = (String)reqInfo.get("ApplyReason");
        TblExamSuspend examSuspend = null;
        String errorMessage = "";
        boolean result = false;
        if(studentID != null && !studentID.trim().equals(""))
            try
            {
                InitialContext jndiContext = new InitialContext();
                StudentSessionLocalHome home = (StudentSessionLocalHome)jndiContext.lookup("StudentSessionLocal");
                StudentSessionLocal local = home.create();
                java.util.Date applyDate = DateFormat.getDateInstance().parse(strApplyDate);
                examSuspend = local.getStudExamSuspendByID(rowsID);
                if(examSuspend != null && examSuspend.getRowsID() != null)
                {
                    if(userInfo.getUserType().equals(new Integer(3)))
                    {
                        examSuspend.setYears(years);
                        examSuspend.setTermID(termID);
                        examSuspend.setCourseID(courseID);
                        examSuspend.setApplyDate(applyDate);
                        examSuspend.setApplyReason(applyReason);
                        examSuspend.setApplyStatus(applyStatus);
                        examSuspend.setFeedback(feedback);
                        examSuspend.setExamStatus(examStatus);
                        examSuspend.setScoreID(scoreID);
                        result = true;
                    } else
                    if(userInfo.getUserType().equals(new Integer(1)))
                    {
                        if(examSuspend.getApplyStatus() == null || examSuspend.getApplyStatus().equals("0"))
                        {
                            examSuspend.setYears(years);
                            examSuspend.setTermID(termID);
                            examSuspend.setCourseID(courseID);
                            examSuspend.setApplyDate(applyDate);
                            examSuspend.setApplyReason(applyReason);
                            examSuspend.setApplyStatus(applyStatus);
                            result = true;
                        } else
                        {
                            errorMessage = "该免修信息已经回复，不能再修改.";
                        }
                    } else
                    {
                        errorMessage = "你没有权限修改缓考信息.";
                    }
                } else
                {
                    errorMessage = "数据库中没有该学生缓考信息.";
                }
                local.remove();
                jndiContext.close();
            }
            catch(Exception e)
            {
                errorMessage = "当修改学生缓考信息时出现错误.";
                result = false;
                e.printStackTrace();
            }
        else
            errorMessage = "传进来的学生学号不能为空.";
        if(result)
        {
            getServletContext().getRequestDispatcher("/student/studexamsuspend.jsp?RowsID=" + examSuspend.getRowsID()).forward(req, res);
        } else
        {
            session.setAttribute("ERRORMESSAGE", errorMessage);
            getServletContext().getRequestDispatcher("/error/error.jsp").forward(req, res);
        }
    }
}