addnewcategory.java

一个信息发布系统 基于jsp+servlet+tomcat 用户分管理员跟普通用户 普通用户有发布信息 查询信息 修改信息 回复信息 管理员拥有普通用户的功能 此外还具有删除信息 管理信息的回复的功能

package control;
import java.io.IOException;
import javax.servlet.http.*;
import javax.servlet.*;
import java.util.*;
/**
 * 用来添加新的板块Category
 * @author steven
 *
 */
public class AddNewCategory extends HttpServlet
{
	public void init(ServletConfig config)throws ServletException
    {
   	 super.init(config);
    }
    
    public void doGet(HttpServletRequest req,HttpServletResponse res)throws ServletException,IOException
    {
   	 doPost(req,res);
    }
    
    public void doPost(HttpServletRequest req,HttpServletResponse res)throws ServletException,IOException
    {
    	 if(((Boolean)req.getSession().getAttribute("AdminOrNot")).booleanValue())//如果是管理员
    	 {
    		 	req.setCharacterEncoding("gbk");
    	    	Vector vc = new Vector();
    	    	String CName = new String(req.getParameter("CName")).trim();
    	    	CName = CName.replaceAll("\\,*", "").replaceAll("\\s", "").replaceAll("\\，", "");
    	    	System.out.println(CName);
    	    	String Parent = req.getParameter("selectcategory");
    	    	String Detail = (String)req.getParameter("detail");
    	    	CategoryCom com2 = new CategoryCom("jdbc:mysql://localhost/mybbs","root", "root123");
    	    	if(com2.isExitCategory(CName)) //如果该分类存在
    	    	{
    	    		tiaoZhuan(req,res,"/AddCategoryFail.jsp");
    	    	}
    	    	else
    	    	{
    	    		GregorianCalendar   timenow=new   GregorianCalendar();   
    	     	    int  year=timenow.get(Calendar.YEAR);   
    	     	    int  month=timenow.get(Calendar.MONTH)+1;   
    	     	    int  day=timenow.get(Calendar.DAY_OF_MONTH);   
    	     	    String   date =year+"-"+month+"-"+day; 
    	     	    if(Parent.equals("null"))
    	     	    {
    	     	    	Parent = CName;
    	     	    	RelationCom com = new RelationCom("jdbc:mysql://localhost/mybbs","root", "root123");

    	     	    	com.addRelation("null", CName,CName);
    	     	    }
    	     	    else
    	     	    {
    	     	    	String PCName = null;
    	     	    	if(Parent.contains(","))
    	     	    	{
    	     	    		PCName = Parent.substring(Parent.lastIndexOf(",")+1);
    	     	    	}
    	     	    	else
    	     	    		PCName = Parent;
    	     	    	
    	     	    	Parent = Parent+","+CName;
    	     	    	RelationCom com = new RelationCom("jdbc:mysql://localhost/mybbs","root", "root123");
    	     	    	com.addRelation(PCName, CName,Parent);
    	     	    }
    	    	     
    	    		com2.addCategory(CName, date, 0, Detail,Parent);
    	       	    vc = com2.getAllCatefory();    //用来存储Category
    	       	    req.setAttribute("demo", vc);
    	       	    req.setAttribute("command", "show");
    	       	    tiaoZhuan(req,res,"/DengLuOK.jsp");
    	    	}
    	 } 	
    }
    
    public void  tiaoZhuan(HttpServletRequest req,HttpServletResponse res,String page)throws ServletException,IOException
    {
   	 RequestDispatcher dispatcher = getServletContext().getRequestDispatcher(page);
   	 dispatcher.forward(req, res);
    }
}