linkmanservlet.java

一个jsp的oa系统,里面有很多亮点学习!

package com.oa.lp.servlet;

import java.io.IOException;
import java.sql.Connection;
import java.sql.Date;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;


import com.oa.lp.dao.LinkManDAO;
import com.oa.lp.dao.LinkManGroupDAO;
import com.oa.lp.database.DataBase;
import com.oa.lp.model.Employee;
import com.oa.lp.model.LinkMan;



public class LinkManServlet extends TopServlet{
	   static final long serialVersionUID = 1L;

	   
	   protected void doPost(HttpServletRequest request, HttpServletResponse response)
			throws ServletException, IOException {
		   String method = request.getParameter("method")==null?"":request.getParameter("method");
		   String linkManId = request.getParameter("linkManId")==null?"0":request.getParameter("linkManId");
		   String groupId = request.getParameter("groupId")==null?"0":request.getParameter("groupId");
		   String linkManName = request.getParameter("linkManName")==null?"":request.getParameter("linkManName");
		   String linkManEmail = request.getParameter("linkManEmail")==null?"":request.getParameter("linkManEmail");
		   String linkManQq = request.getParameter("linkManQq")==null?"":request.getParameter("linkManQq");
		   String linkManMobile = request.getParameter("linkManMobile")==null?"":request.getParameter("linkManMobile");
		   String linkManTel = request.getParameter("linkManTel")==null?"":request.getParameter("linkManTel");
		   String linkManBirthday = request.getParameter("linkManBirthday")==null?"":request.getParameter("linkManBirthday");
		   String homeAddress = request.getParameter("homeAddress")==null?"":request.getParameter("homeAddress");
		   String comName = request.getParameter("comName")==null?"":request.getParameter("comName");
		   String comAddress = request.getParameter("comAddress")==null?"":request.getParameter("comAddress");
		   String linkManState = request.getParameter("linkManState")==null?"0":request.getParameter("linkManState");

		   LinkMan linkMan = new LinkMan();
		   if(linkManId.length()>0){
			   linkMan.setLinkManId(Integer.parseInt(linkManId));
		   }
		   if(groupId.length()>0){
			   linkMan.setGroupId(Integer.parseInt(groupId));
		   }
		   linkMan.setLinkManName(linkManName);
		   linkMan.setLinkManEmail(linkManEmail);
		   linkMan.setLinkManQq(linkManQq);
		   linkMan.setLinkManMobile(linkManMobile);
		   linkMan.setLinkManTel(linkManTel);
		   linkMan.setLinkManBirthday(linkManBirthday);
		  
		   linkMan.setHomeAddress(homeAddress);
		   linkMan.setComName(comName);
		   linkMan.setComAddress(comAddress);
		   if(linkManState.length()>0){
			   linkMan.setLinkManState(Integer.parseInt(linkManState));
		   }
		   HttpSession session = request.getSession();
		   Connection conn=null;
		try {
			Employee emp = (Employee) session.getAttribute("emp");
			conn = DataBase.getConnection();
			LinkManDAO linkManDao = new LinkManDAO();
			LinkManGroupDAO lmgDao = new LinkManGroupDAO();
			
			linkManDao.setConn(conn);
			lmgDao.setConn(conn);
			
			if(method.equals("list")){
				
				request.setAttribute("groups",lmgDao.listAllGroups(emp.getEmpId()));
				
				request.setAttribute("linkMans", linkManDao.getLinkmansByGroupId(linkMan.getGroupId(),emp.getEmpId()));
				
				this.forward(request, response,"/system/linkMan/list.jsp");
			}else if(method.equals("edit")){
				request.setAttribute("groups",lmgDao.listAllGroups(emp.getEmpId()));
				request.setAttribute("lm",linkManDao.getLinkManById(Integer.parseInt(linkManId)));
				this.forward(request, response,"/system/linkMan/linkMan.jsp");
			}else if(method.equals("update")){
				linkManDao.updateLinkMan(linkMan);
				this.sendRedirect(request, response, "/LinkManServlet?method=list");
			}else if(method.equals("del")){
				linkManDao.delLinkMan(Integer.parseInt(linkManId));
				this.sendRedirect(request, response, "/LinkManServlet?method=list");
			}else if(method.equals("add")){			
				linkManDao.addLinkMan(linkMan);
				this.sendRedirect(request, response, "/LinkManServlet?method=list");
			}else if(method.equals("addLoad")){
				request.setAttribute("groups",lmgDao.listAllGroups(emp.getEmpId()));
				this.forward(request, response,"/system/linkMan/linkMan.jsp");
			}
			//事务提交
			DataBase.commit();
			
		} catch (Exception e) {
			e.printStackTrace();
		}finally{
			if(conn!=null){
				//关闭连接
				DataBase.releaseConnection(conn);
			}
		}	   
	}    
	}