public String update(HttpServletRequest req, HttpServletResponse resp)
throws FileNotFoundException, IOException {
Product p = (Product) RequestUtil.setParam(Product.class, req);
RequestUtil.Validate(Product.class, req);
String img = req.getParameter("img");
System.out.println(img + "----------------------");
int cid = 0;
try {
cid = Integer.parseInt(req.getParameter("cid"));
} catch (NumberFormatException e) {
}
if (cid == 0) {
this.getErrors().put("cid", "商品类别必须选择");
}
Product tp = productDao.load(Integer.parseInt(req.getParameter("id")));
tp.setIntro(p.getIntro());
tp.setName(p.getName());
tp.setPrice(p.getPrice());
tp.setStock(p.getStock());
boolean updateImg = false;
if (img == null || img.trim().equals("")) {
// 此时说明不修改图片
} else {
// 此时说明需要修改图片
if (!this.hasErrors()) {
// 是否要修改文件
byte[] fs = (byte[]) req.getAttribute("fs");
String fname = req.getParameter("img");
fname = FilenameUtils.getName(fname);
RequestUtil.uploadFile(fname, "img", fs, req);
}
updateImg = true;
}
if (this.hasErrors()) {
req.setAttribute("p", tp);
req.setAttribute("cs", categoryDao.list());
return "product/updateInput.jsp";
}
if (updateImg) {
// 先删除原有的图片
String oimg = tp.getImg();
File f = new File(SystemContext.getRealpath() + "/img/" + oimg);
f.delete();
tp.setImg(p.getImg());
}
productDao.update(tp, cid);
return redirPath + "ProductServlet?method=list";
}
public String addInput(HttpServletRequest req, HttpServletResponse resp) {
req.setAttribute("cs", categoryDao.list());
return "product/addInput.jsp";
}
public String updateInput(HttpServletRequest req, HttpServletResponse resp) {
req.setAttribute("cs", categoryDao.list());
req.setAttribute("p", productDao.load(Integer.parseInt(req.getParameter("id"))));
return "product/updateInput.jsp";
}