1.配置xml文件

1 <!-- 指定文件上傳解析  名字不能亂給 -->
2     <bean name="multipartResolver" class="org.springframework.web.multipart.commons.CommonsMultipartResolver">
3         <property name="defaultEncoding" value="utf-8" />
4         <property name="maxUploadSize" value="9223372036854775807"
 
 />
5     </bean>

2.編寫代碼

 1 @RequestMapping(value="flatform/app/appinfoaddsave")
 2     public String appinfoaddsave(App_info app_info, MultipartFile a_logoPicPath, Model m, HttpSession session) throws IOException {
 3         if (a_logoPicPath.getSize() > 1024*50) {
 4             m.addAttribute("fileUploadError", "文件大小不能超過50kb！");
 
 5             return "jsp/developer/appinfoadd";
 6         }
 7         String filename = a_logoPicPath.getOriginalFilename();                                                    //文件名稱
 8         String contextPath = session.getServletContext().getContextPath();                                //相對路徑
 9
 
         String realPath = session.getServletContext().getRealPath("statics/uploadfiles");            //絕對路徑
10         String type = a_logoPicPath.getContentType();                                                                //文件類型
11         File file = new File(realPath, filename);
12         if ("image/png".equals(type) || "image/jpg".equals(type) || "image/jpeg".equals(type)) {
13             a_logoPicPath.transferTo(file);                                                    //將圖片保存到本地
14             app_info.setLogoLocPath(realPath+"\\"+filename);
15             app_info.setLogoPicPath(contextPath+"/statics/uploadfiles/"+filename);
16             app_infoService.appinfoaddsave(app_info);
17             return "redirect:list";
18         } else {
19             m.addAttribute("fileUploadError", "文件類型只能是jpg、jpeg、png！");
20             return "jsp/developer/appinfoadd";
21         }
22     }

最後需要再jsp頁面中的form標簽中加上 enctype="multipart/form-data"。

Spring MVC文件上傳