JAVAWEB网上商城项目实现controller层的业务八------JAVA

深碍√TFBOYSˉ_ 2024-03-02 08:42 6阅读 0赞

>     package controller;
>     
>     import bean.product;
>     import dao.select;
>     import jakarta.servlet.*;
>     import jakarta.servlet.http.*;
>     import jakarta.servlet.annotation.*;
>     import java.io.IOException;
>     import java.io.PrintWriter;
>     
>     @WebServlet(name = "controller.SearchProductServlet", urlPatterns = "/controller.SearchProductServlet")
>     public class SearchProductServlet extends HttpServlet {
>         @Override
>         protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
>             this.doPost(request,response);
>         }
>     
>         @Override
>         protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
>             String product_name = request.getParameter("product_name");
>             product product = new select().getProduct(product_name);
>             PrintWriter out = response.getWriter();
>             response.setContentType("text/html;charset=GBK");
>             if(!(product ==null))
>             {
>                 request.getSession().setAttribute("SearchProduct",product);
>                 out.println("<script>window.location.href='http://localhost:8080/html/ProductQueryHandle.jsp'</script>");
>             }
>             else
>             {
>                 out.println("<script>alert(\"该商品不存在\");</script>");
>                 out.println("<script>window.location.href='http://localhost:8080/html/ProductQueryHandle.jsp'</script>");
>             }
>     
>         }
>     }
> 
>     package controller;
>     
>     import bean.product;
>     import dao.select;
>     import jakarta.servlet.*;
>     import jakarta.servlet.http.*;
>     import jakarta.servlet.annotation.*;
>     import java.io.IOException;
>     import java.io.PrintWriter;
>     
>     @WebServlet(name = "controller.SearchProductServlet", urlPatterns = "/controller.SearchProductServlet")
>     public class SearchProductServlet extends HttpServlet {
>         @Override
>         protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
>             this.doPost(request,response);
>         }
>     
>         @Override
>         protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
>             String product_name = request.getParameter("product_name");
>             product product = new select().getProduct(product_name);
>             PrintWriter out = response.getWriter();
>             response.setContentType("text/html;charset=GBK");
>             if(!(product ==null))
>             {
>                 request.getSession().setAttribute("SearchProduct",product);
>                 out.println("<script>window.location.href='http://localhost:8080/html/ProductQueryHandle.jsp'</script>");
>             }
>             else
>             {
>                 out.println("<script>alert(\"该商品不存在\");</script>");
>                 out.println("<script>window.location.href='http://localhost:8080/html/ProductQueryHandle.jsp'</script>");
>             }
>     
>         }
>     }

>     package controller;
>     
>     import dao.Update;
>     import jakarta.servlet.*;
>     import jakarta.servlet.http.*;
>     import jakarta.servlet.annotation.*;
>     
>     import java.io.IOException;
>     import java.io.PrintWriter;
>     
>     @WebServlet(name = "controller.USEServlet", urlPatterns = "/controller.USEServlet")
>     public class USEServlet extends HttpServlet {
>         @Override
>         protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
>             this.doPost(request,response);
>         }
>     
>         @Override
>         protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
>             String DelEmail = request.getParameter("DelEmail");
>             PrintWriter out = response.getWriter();
>             response.setContentType("text/html;charset=GBK");
>             int num = new Update().DelUser(DelEmail);
>             if(num == 1)
>             {
>                 out.println("<script>alert(\"删除成功\");</script>");
>                 out.println("<script>window.location.href='http://localhost:8080/html/userDelete.jsp'</script>");
>             }
>             else
>             {
>                 out.println("<script>alert(\"删除失败\");</script>");
>                 out.println("<script>window.location.href='http://localhost:8080/html/userDelete.jsp'</script>");
>             }
>         }
>     }
> 
>     package controller;
>     
>     import dao.Update;
>     import jakarta.servlet.*;
>     import jakarta.servlet.http.*;
>     import jakarta.servlet.annotation.*;
>     
>     import java.io.IOException;
>     import java.io.PrintWriter;
>     
>     @WebServlet(name = "controller.USEServlet", urlPatterns = "/controller.USEServlet")
>     public class USEServlet extends HttpServlet {
>         @Override
>         protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
>             this.doPost(request,response);
>         }
>     
>         @Override
>         protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
>             String DelEmail = request.getParameter("DelEmail");
>             PrintWriter out = response.getWriter();
>             response.setContentType("text/html;charset=GBK");
>             int num = new Update().DelUser(DelEmail);
>             if(num == 1)
>             {
>                 out.println("<script>alert(\"删除成功\");</script>");
>                 out.println("<script>window.location.href='http://localhost:8080/html/userDelete.jsp'</script>");
>             }
>             else
>             {
>                 out.println("<script>alert(\"删除失败\");</script>");
>                 out.println("<script>window.location.href='http://localhost:8080/html/userDelete.jsp'</script>");
>             }
>         }
>     }