productservlet.java

基于JSP的家电连锁超市管理系统 数据库也在文件内

package servlet;

import java.io.*;
import javax.servlet.*;
import javax.servlet.http.*;
import electric.dbs.*;
import electric.electricUtils.*;

public class ProductServlet extends HttpServlet
{
	public void doPost(HttpServletRequest request,HttpServletResponse response)
	  throws ServletException,java.io.IOException
	{
		  System.out.println("=== servlet ===");
		  String pageAction=ParamUtils.getEscapeHTMLParameter(request,"pageaction","goback");
		  String responsePage=ParamUtils.getEscapeHTMLParameter(request,"responsepage","");
		  pageAction=pageAction.trim().toUpperCase();
		  System.out.println("=== pageAction ==="+pageAction);
		  if(pageAction.equals("CREATE"))
		  {
		        Dbproduct product=new Dbproduct(request);
		  }
		  else if(pageAction.equals("MODIFY"))
		  {
			int id=ParamUtils.getIntParameter(request,"Id",0);
			System.out.println("=== id ==="+id);
			if(id>0)
		        {
			        try
			        {
				        Dbproduct product=new Dbproduct(id);
			            product.modify(request);	        	
			        }
			        catch(Exception e)
			        {
			        	System.err.println("错误提示：ProductServlet 的修改部分。"+e.getMessage());
			        }
		        }		
		  }
		  else if(pageAction.equals("DELETE"))
		  {
			int id2=ParamUtils.getIntParameter(request,"id",0);
		        if(id2>0)
		        {
			        try
			        {
		             Dbproduct product=new Dbproduct(id2);		
		             product.setStatus(1);		        	
			        }
			        catch(Exception e)
			        {
			        	System.err.println("错误提示：ProductServlet 的修改部分。"+e.getMessage());
			        }		             	  
		        }
		  }
        if(!responsePage.trim().equals(""))
        {
        	response.sendRedirect(responsePage);
        }
        else
        {
           String url="/"+responsePage;
           this.getServletConfig().getServletContext().getRequestDispatcher(url).forward(request,response);	
        }                      		
	}
	
	public void doGet(HttpServletRequest request,HttpServletResponse response)
	  throws ServletException,java.io.IOException
	{
	  	this.doPost(request,response);
	}
}