deleteuser.java

本系统采用JSP技术

/**
 * 该Servlet接受来自customerManage.jsp的请求
 * 负责删除注册用户
 */
import java.io.*;
import java.sql.*;
import javax.servlet.*;
import javax.servlet.http.*;
import bean.DBClass;


public class DeleteUser extends HttpServlet{
	public void doGet(HttpServletRequest request, HttpServletResponse response) 
	throws ServletException, IOException {
		HttpSession session=request.getSession();
		String toJsp="/bookshop/customerManage.jsp";
		if(session.getAttribute("adminId")!=null){
			if(request.getParameterValues("userId")!=null){
				String[] id=request.getParameterValues("userId");
				DBClass db=new DBClass();
				db.connect();
				for(int i=0;i<id.length;i++){
					String command="DELETE FROM customer WHERE id="+"\'"+ id[i] + "\'";
					db.executeUpdate(command);
					
					command="DELETE FROM userorder WHERE user="+"\'"+ id[i] + "\'";
					db.executeUpdate(command);
					
					command="DELETE FROM orderlist WHERE user="+"\'"+ id[i] + "\'";
					db.executeUpdate(command);
					
				}
				db.closeConnection();
			}
		}	
		response.sendRedirect(toJsp);	
	}
	
	public void doPost(HttpServletRequest request, HttpServletResponse response)
	throws ServletException, IOException {
		doGet(request,response);
	}
}