classmanager.java

一套购物车项目。电子商务系统。实现了前台和后台的业务逻辑。

package com.softfz.jn0708.servlet;

import java.io.IOException;
import java.io.PrintWriter;
import java.util.List;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;
import com.softfz.jn0708.bean.ClassBean;
import com.softfz.jn0708.dao.ClassDAO;


/**
 * 类别信息管理Servlet
 * @author student
 *
 */
public class ClassManager extends HttpServlet {


	/**
	 * 
	 */
	private static final long serialVersionUID = 9068917923498143197L;

	public void doGet(HttpServletRequest request, HttpServletResponse response)
			throws ServletException, IOException {

		doPost(request,response);
	}

	/**
	 * doPost方法
	 */
	public void doPost(HttpServletRequest request, HttpServletResponse response)
			throws ServletException, IOException {
		HttpSession session = request.getSession();
		String username = (String)session.getAttribute("adminuname");	
		
		if(username!=null){				
			PrintWriter out = response.getWriter();
			request.setCharacterEncoding("GBK");
			response.setCharacterEncoding("GBK");		
			String task = request.getParameter("task");
			String param = request.getParameter("param");		
			String typed = request.getParameter("typed");
			
			ClassDAO classdao = new ClassDAO();	
			List bClasslist = classdao.getBclass();
			List nClasslist = classdao.getNclass();
			request.setAttribute("bclasslist",bClasslist);
			request.setAttribute("nclasslist",nClasslist);
			
			if(typed==null){
				if(task==null&&param==null){	
					request.getRequestDispatcher("/admin/manager/classType.jsp").forward(request,response);				
				}else if(task.equals("add")&&param.equals("btype")){//添加大类
					String type ="addbtype";			
					request.setAttribute("param",param);
					request.setAttribute("type",type);			
					request.getRequestDispatcher("/admin/manager/classType.jsp").forward(request,response);
				}else if(task.equals("add")&&param.equals("stype")){//添加小类					
					String type ="addstype";
					String parentid = request.getParameter("parentid");
					request.setAttribute("param",param);
					request.setAttribute("type",type);
					request.setAttribute("parentid",parentid);				
					request.getRequestDispatcher("/admin/manager/classType.jsp").forward(request,response);
				}else if(task.equals("edit")&&param.equals("btype")){//修改大类	
					String type ="editbtype";
					String id = request.getParameter("id");
					String name = request.getParameter("name");
					String parentid = request.getParameter("parentid");
					request.setAttribute("type",type);
					request.setAttribute("param",param);
					request.setAttribute("parentid",parentid);	
					request.setAttribute("classid",id);
					request.setAttribute("classname",name);
					request.getRequestDispatcher("/admin/manager/classType.jsp").forward(request,response);
				}else if(task.equals("edit")&&param.equals("stype")){//修改小类					 
					String type ="editstype";
					String classid = request.getParameter("id");
					String parentid = request.getParameter("parentid");
					String classname = request.getParameter("name");
					request.setAttribute("type",type);
					request.setAttribute("param",param);
					request.setAttribute("classid",classid);
					request.setAttribute("parentid",parentid);
					request.setAttribute("classname",classname);
					request.getRequestDispatcher("/admin/manager/classType.jsp").forward(request,response);
				}			
			}else if(typed.equals("addbtype")){//添加大类				
				String classname = request.getParameter("classname");
				boolean flag = classdao.isUsed(classname,"0");			
				if(!flag){
					ClassBean classBean = new ClassBean();
					classBean.setClassname(classname);
					classBean.setParentid(0);				
					boolean isSuccess = classdao.addClassType(classBean);
					if(isSuccess){					
						out.println("<script>");
						out.println("alert('添加大类成功！');");			
						out.println("</script>");	
						bClasslist = classdao.getBclass();
						nClasslist = classdao.getNclass();
						request.setAttribute("bclasslist",bClasslist);
						request.setAttribute("nclasslist",nClasslist);
						request.getRequestDispatcher("/admin/manager/classType.jsp").forward(request,response);
						out.flush();
						out.close();					
					}else{
						out.println("<script>");
						out.println("alert('添加大类失败！');");	
						out.println("history.back();");
						out.println("</script>");
						out.flush();
						out.close();
					}				
				}else{
					out.println("<script>");
					out.println("alert('该大类名称已经被使用！');");
					out.println("history.back();");
					out.println("</script>");			
					out.flush();
					out.close();
				}
				
			}else if(typed.equals("addstype")){//添加小类
				String classname = request.getParameter("classname");
				String parentid = request.getParameter("parentid");
				boolean flag = classdao.isUsed(classname,"-1");			
				if(!flag){
					ClassBean classBean = new ClassBean();
					classBean.setClassname(classname);
					classBean.setParentid(Integer.parseInt(parentid.trim()));				
					boolean isSuccess = classdao.addClassType(classBean);
					if(isSuccess){					
						out.println("<script>");
						out.println("alert('添加小类成功！');");			
						out.println("</script>");	
						bClasslist = classdao.getBclass();
						nClasslist = classdao.getNclass();
						request.setAttribute("bclasslist",bClasslist);
						request.setAttribute("nclasslist",nClasslist);
						request.getRequestDispatcher("/admin/manager/classType.jsp").forward(request,response);
						out.flush();
						out.close();					
					}else{
						out.println("<script>");
						out.println("alert('添加小类失败！');");	
						out.println("history.back();");
						out.println("</script>");
						out.flush();
						out.close();
					}				
				}else{
					out.println("<script>");
					out.println("alert('该小类名称已经被使用！');");
					out.println("history.back();");
					out.println("</script>");			
					out.flush();
					out.close();
				}
				
			}else if(typed.equals("editbtype")){//修改大类	
				
				String classid = request.getParameter("classid");
				String classname = request.getParameter("classname");			
				boolean flag = classdao.isUsing(classname,classid,"0");			
				if(!flag){
					ClassBean classBean = new ClassBean();
					classBean.setClassname(classname);
					classBean.setClassid(Integer.parseInt(classid));				
					boolean isSuccess = classdao.updateClassType(classBean);
					if(isSuccess){					
						out.println("<script>");
						out.println("alert('修改大类成功！');");			
						out.println("</script>");	
						bClasslist = classdao.getBclass();
						nClasslist = classdao.getNclass();
						request.setAttribute("bclasslist",bClasslist);
						request.setAttribute("nclasslist",nClasslist);
						request.getRequestDispatcher("/admin/manager/classType.jsp").forward(request,response);
						out.flush();
						out.close();					
					}else{
						out.println("<script>");
						out.println("alert('修改大类失败！');");	
						out.println("history.back();");
						out.println("</script>");
						out.flush();
						out.close();
					}				
				}else{
					out.println("<script>");
					out.println("alert('该大类名称已经被使用！');");
					out.println("history.back();");
					out.println("</script>");			
					out.flush();
					out.close();
				}
				
			}else if(typed.equals("editstype")){//修改小类	
				String classid = request.getParameter("classid");
				String classname = request.getParameter("classname");
				String parentid = request.getParameter("parentid");
				boolean flag = classdao.isUsing(classname,classid,parentid);			
				if(!flag){
					ClassBean classBean = new ClassBean();
					classBean.setClassname(classname);
					classBean.setClassid(Integer.parseInt(classid));				
					boolean isSuccess = classdao.updateClassType(classBean);
					if(isSuccess){					
						out.println("<script>");
						out.println("alert('修改小类成功！');");			
						out.println("</script>");	
						bClasslist = classdao.getBclass();
						nClasslist = classdao.getNclass();
						request.setAttribute("bclasslist",bClasslist);
						request.setAttribute("nclasslist",nClasslist);
						request.getRequestDispatcher("/admin/manager/classType.jsp").forward(request,response);
						out.flush();
						out.close();					
					}else{
						out.println("<script>");
						out.println("alert('修改小类失败！');");	
						out.println("history.back();");
						out.println("</script>");
						out.flush();
						out.close();
					}				
				}else{
					out.println("<script>");
					out.println("alert('该小类名称已经被使用！');");
					out.println("history.back();");
					out.println("</script>");			
					out.flush();
					out.close();
				}
				
			}else if(typed.equals("delbtype")){//删除大类
				
				String classid = request.getParameter("classid");
				ClassBean classbean =null;
				classbean =  classdao.getClassType(classid);
				if(classbean!=null){				
					boolean isSuccess = classdao.delClassType(String.valueOf(classbean.getClassid()),String.valueOf(classbean.getParentid()));
					if(isSuccess){
						out.println("<script>");				
						out.println("alert('删除大类成功！');");			
						out.println("</script>");			
						bClasslist = classdao.getBclass();
						nClasslist = classdao.getNclass();
						request.setAttribute("bclasslist",bClasslist);
						request.setAttribute("nclasslist",nClasslist);
						request.getRequestDispatcher("/admin/manager/classType.jsp").forward(request,response);
						out.flush();
						out.close();	
					}else{
						out.println("<script>");				
						out.println("alert('删除大类失败！');");	
						out.println("history.back();");
						out.println("</script>");			
						out.flush();
						out.close();
					}
					
				}else{
					out.println("<script>");				
					out.println("alert('没有该类别！');");	
					out.println("history.back();");
					out.println("</script>");			
					out.flush();
					out.close();
				}
	
				
			}else if(typed.equals("delstype")){//删除小类
				String classid = request.getParameter("classid");
				ClassBean classbean =null;
				classbean =  classdao.getClassType(classid);
				if(classbean!=null){				
					boolean isSuccess = classdao.delClassType(String.valueOf(classbean.getClassid()),String.valueOf(classbean.getParentid()));
					if(isSuccess){
						out.println("<script>");				
						out.println("alert('删除小类成功！');");			
						out.println("</script>");			
						bClasslist = classdao.getBclass();
						nClasslist = classdao.getNclass();
						request.setAttribute("bclasslist",bClasslist);
						request.setAttribute("nclasslist",nClasslist);
						request.getRequestDispatcher("/admin/manager/classType.jsp").forward(request,response);
						out.flush();
						out.close();	
					}else{
						out.println("<script>");				
						out.println("alert('删除小类失败！');");	
						out.println("history.back();");
						out.println("</script>");			
						out.flush();
						out.close();
					}
					
				}else{
					out.println("<script>");				
					out.println("alert('没有该类别！');");
					out.println("history.back();");
					out.println("</script>");			
					out.flush();
					out.close();
				}
	
			}
		}else{
			request.getRequestDispatcher("/admin/login.jsp").forward(request,response);
		}		
		
	}

}