springmvc day02高級參數(shù)圖片json數(shù)據(jù)交互工程第二天課堂筆記

Jsp@parampublicStringqueryItem(QueryVovo,Integer[]ids){if(ids!=null&&ids.length>0)for(Integerid:ids)System.out.println("傳入的商品列表分別為：}}return}ListJspPOJO@RequestMap可以加在類頭部，用于 redirect@authorpublicclassCustomerExceptionimplementsHandlerExceptionResolverpublicModelAndViewresolveException(HttpServletRequestrequest,HttpServletResponseresponse,Objecthanlder,Exceptione)Stringmsg很抱歉，系統(tǒng)發(fā)生異常了，請聯(lián)系管理員ModelAndViewmav=newmav.addObject("msg"msg);returnmav;}}測試@authorpublicclassMyExceptionextendsExceptionprivateStringpublicMyException()}publicMyException(Stringmsg)this.msg=msg;}publicStringgetMsg()return}publicvoidsetMsg(Stringmsg)this.msg=}}測試 加入上能需要的jar配置多解析<!--配置多處理器--<bean <propertyname="maxUploadSize" "jsp編寫上傳處理代@RequestMap(value="updateItem",method{RequestMethod.POST,RequestMethod.GETpublicStringupdateItem(Itemitem,Modelmodel,MultipartFilepicFile)throwsException{//新名Stringname=//原名StringoldName=StringexeName=Filepic=newFile("D:\\WebWork\\"+name+//保存到本地磁//更新商品信item.setPic(name+model.addAttribute("item",item);model.addAttribute("msg"修改商品成功");return"itemEdit";}jsonjar*@parampublicItemgetItem(@RequestBodyItemitem2){System.out.println("接收到的json商品數(shù)據(jù)為：item2);Itemitem=return}測試，安裝瀏覽器測試工Springmvc@param@parampublicStringtestRest(@PathVariable("id")Integerids,Modelmodel){Itemitem=itemServices.getItemById(ids);model.addAttribute("item",item);return}測試直接url{項目名/item/1.action}即可99.1器開發(fā)流創(chuàng)建一號@authorpublicclassMyInterceptor1implementsHandlerInterceptorpublicvoid pletion(HttpServletRequestarg0,HttpServletResponsearg1,Objectarg2,Exceptionarg3)throwsException }publicvoidpostHandle(HttpServletRequestarg0,HttpServletResponsearg1,Objectarg2,ModelAndViewarg3)throwsException{ }publicbooleanpreHandle(HttpServletRequestarg0,HttpServletResponsearg1,Objectarg2)throwsException{ return}}二號器，一號，修改一下系統(tǒng)輸出消配置<!--器定義--<!--定義一個器--<!--path配置</**>所有請求，包括二級以上 <mvc:mapclass="erceptor.MyInterceptor1"/><!--定義一個器--<!--path配置</**>所有請求，包括二級以上 <mvc:mapclass="erceptor.MyInterceptor2"/>9.2器案例應(yīng)用，登錄session3、器 <%@pagelanguage="java"contentType="text/html;charset=UTF-<!DOCTYPEhtmlPUBLIC"-//W3C//DTDHTML4.01Transitional//EN"""><metahttp-equiv="Content-Type"content="text/html;charset=UTF-<formaction="${pageContext.request.contextPath用戶名：<inputtype="textname="username：<inputtype="password"name="password"<input登錄@authorpublicclassUserControllerpublicStringtoLogin(){return}publicStringlogin(Stringusername,Stringpassword,HttpSessionStringresult=if(username!=result=}return}}publicbooleanpreHandle(HttpServletRequestrequest,HttpServletResponseresponse,Objectarg2)throwsException{Objectattribute=if(attribute!=returnresponse.sendRedirect(request.getContextPath()+r