flex crud例子

package com; import java.io.IOException; import java.io.PrintWriter; import java.util.List; import javax.servlet.ServletException; import javax.servlet.http.HttpServlet; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; import com.dao.ProductDao; import com.vo.Product; @SuppressWarnings("serial") public class ProductServlet extends HttpServlet { public void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { String method = request.getParameter("method"); System.out.println("method:" + method); if (method.equals("findAll")) { this.findAll(request, response); } else if (method.equals("save")) { try { this.save(request, response); } catch (Exception e) { e.printStackTrace(); } } else if (method.equals("update")) { try { this.update(request, response); } catch (Exception e) { e.printStackTrace(); } } else if (method.equals("remove")) { try { this.remove(request, response); } catch (Exception e) { e.printStackTrace(); } } } /** * 查询所有的方法 * @param request * @param response * @throws ServletException * @throws IOException */ public void findAll(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { response.setContentType("text/html"); response.setCharacterEncoding("utf-8"); PrintWriter out = response.getWriter(); String str = "<?xml version=\"1.0\" encoding=\"utf-8\"?>"; str += "<catalog>"; ProductDao srv = new ProductDao(); List<Product> list = null; list = srv.getAll(); Product product; for (int i = 0; i < list.size(); i++) { product = (Product) list.get(i); str += "<product productId=\"" + product.getId() + "\">"; str += "<id>" + product.getId() + "</id>"; str += "<productName>" + product.getProductName() + "</productName>"; str += "<remark>" + product.getRemark() + "</remark>"; str += "</product>"; } str += "</catalog>"; out.write(str); } /** * 保存的方法 * @param request * @param response * @throws Exception */ public void save(HttpServletRequest request, HttpServletResponse response) throws Exception { String productName = convert(request.getParameter("productName")); String remark = convert(request.getParameter("remark")); Product entity = new Product(); entity.setProductName(productName); entity.setRemark(remark); ProductDao pd = new ProductDao(); pd.insert(entity); } public void update(HttpServletRequest request, HttpServletResponse response) throws Exception { System.out.println("begin update"); Integer id = Integer.parseInt(request.getParameter("id")); String productName = convert(request.getParameter("productName")); String remark = convert(request.getParameter("remark")); Product entity = new Product(); entity.setId(id); entity.setProductName(productName); entity.setRemark(remark); ProductDao pd = new ProductDao(); pd.update(entity); } public void remove(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { System.out.println("begin remove"); Integer id = Integer.parseInt(request.getParameter("id")); System.out.println("id:" + id); ProductDao pd = new ProductDao(); pd.remove(id); } public void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { this.doGet(request, response); } /* * 字符转码 */ public String convert(String str) throws Exception { return new String(str.getBytes("iso8859-1"), "utf-8"); } }