Java tutorial
/* * To change this license header, choose License Headers in Project Properties. * To change this template file, choose Tools | Templates * and open the template in the editor. */ package com.oak_yoga_studio.controller; import com.oak_yoga_studio.domain.Product; import com.oak_yoga_studio.service.IProductService; import java.io.IOException; import java.io.OutputStream; import java.util.List; import javax.servlet.http.HttpServletResponse; import javax.servlet.http.HttpSession; import javax.validation.Valid; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.stereotype.Controller; import org.springframework.ui.Model; import org.springframework.validation.BindingResult; import org.springframework.validation.FieldError; import org.springframework.web.bind.annotation.ModelAttribute; import org.springframework.web.bind.annotation.PathVariable; import org.springframework.web.bind.annotation.RequestMapping; import org.springframework.web.bind.annotation.RequestMethod; import org.springframework.web.bind.annotation.RequestParam; import org.springframework.web.multipart.MultipartFile; import org.springframework.web.servlet.mvc.support.RedirectAttributes; /** * * @author Weldu */ @Controller public class ProductController { @Autowired private IProductService productService; @RequestMapping(value = "/products", method = RequestMethod.GET) public String getAll(Model model) { model.addAttribute("products", productService.getAllProducts()); return "productList"; } @RequestMapping(value = "/products/{id}", method = RequestMethod.GET) public String get(@PathVariable int id, Model model) { model.addAttribute("product", productService.getProduct(id)); return "editProduct"; } @RequestMapping(value = "/products/{id}", method = RequestMethod.POST) public String editProduct(@Valid Product product, BindingResult result, @PathVariable int id) { String view = "redirect:/products"; if (!result.hasErrors()) { productService.updateProduct(product); } else { view = "editProduct"; } return view; } @RequestMapping(value = "/addProduct", method = RequestMethod.GET) public String addProductGet(@ModelAttribute("product") Product product) { return "addProduct"; } @RequestMapping(value = "/addProduct", method = RequestMethod.POST) public String addProduct(@Valid Product product, BindingResult result, RedirectAttributes re, @RequestParam("file") MultipartFile file) { String view = "redirect:/products"; if (!result.hasErrors()) { try { product.setImage(file.getBytes()); product.setStatus("ACTIVE"); } catch (IOException ex) { ex.printStackTrace(); } productService.addProduct(product); } else { //System.out.println("inside error adding product"); view = "addProduct"; } return view; } /** * EDIT PRODUCT * * @param prodid * @return */ @RequestMapping(value = "/productEdit/{id}", method = RequestMethod.GET) public String getProduct(@ModelAttribute("product") Product product, @PathVariable int id) { //model.addAttribute("product", productService.getProductDetailInfo(id)); return "editProduct"; } @RequestMapping(value = "/productEdit", method = RequestMethod.POST) public String updateProduct(@Valid Product product, BindingResult result, @RequestParam("file") MultipartFile file) { if (!result.hasErrors()) { try { product.setImage(file.getBytes()); product.setStatus("ACTIVE"); productService.updateProduct(product); } catch (IOException ex) { ex.printStackTrace(); } return "redirect:/products"; } else { for (FieldError err : result.getFieldErrors()) { System.out.println(err.getField() + ": " + err.getDefaultMessage()); } return "editProduct"; } } /** * * @return */ @RequestMapping(value = "/productResult", method = RequestMethod.GET) public String searchProductResult() { return "productList"; } @RequestMapping(value = "/searchProduct", method = RequestMethod.POST) public String searchProduct(RedirectAttributes re, Model model, String productName) { List<Product> products = productService.getProductByName(productName); if (products.size() > 0) { //searched product found re.addFlashAttribute("products", products); return "redirect:/productResult"; } else { re.addFlashAttribute("msgs", "Product not found, please try again"); return "notFound"; } } @RequestMapping(value = "/searchProduct", method = RequestMethod.GET) public String searchProductByName() { ; return "searchProduct"; } /** * Image display */ @RequestMapping(value = "/productImage/{id}", method = RequestMethod.GET) public void getProductImage(Model model, @PathVariable int id, HttpServletResponse response) { try { Product p = productService.getProduct(id); if (p != null) { OutputStream out = response.getOutputStream(); out.write(p.getImage()); response.flushBuffer(); } } catch (IOException ex) { ex.printStackTrace(); } } }