原文链接：

http://www.cnblogs.com/lonecloud/p/5989905.html

在Spring-mvc.xml注入bean

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如果想要在model里面进行文件上传到数据库中则

1 package cn.lonecloud.model; 2  3 import java.io.Serializable; 4 import java.util.List; 5  6 import org.springframework.web.multipart.MultipartFile; 7  8 public class Test implements Serializable{ 9 10     private String id;11     12     private String name;13     14     private String price;15     //文件上传List16     private List
     
       files;17 18     public String getId() {19         return id;20     }21 22     public void setId(String id) {23         this.id = id;24     }25 26     public String getName() {27         return name;28     }29 30     public void setName(String name) {31         this.name = name;32     }33 34     public String getPrice() {35         return price;36     }37 38     public void setPrice(String price) {39         this.price = price;40     }41 42     public List
      
        getFiles() {43         return files;44     }45 46     public void setFiles(List
       
         files) {47         this.files = files;48     }49     50     51 }
       
      
     

Controller层代码

1     /** 2      * 将文件封装在Model里面 3      * @Description:  4      * @param request 用来获取路径 5      * @param test 封装类 6      * @param model 返回模型 7      * @return 8      */ 9     @RequestMapping("save")10     public String saveTest(HttpServletRequest request,11             @ModelAttribute Test test, Model model) {12         List
     
       files = test.getFiles();//获取文件13         List
      
        fileNames = new ArrayList<>();14         if (null != files && files.size() != 0) {//判断空15             for (MultipartFile multipartFile : files) {16                 String fileName = multipartFile.getOriginalFilename();17                 String realPath = request.getServletContext().getRealPath(18                         "/file");//获取路径19                 fileNames.add(fileName);20                 File parents = new File(realPath);21                 if (!parents.exists()) {22                     parents.mkdirs();23                 }24                 File destFile = new File(parents, fileName);25                 try {26                     multipartFile.transferTo(destFile);//拷贝文件27                 } catch (IllegalStateException e) {28                     // TODO Auto-generated catch block29                     e.printStackTrace();30                 } catch (IOException e) {31                     // TODO Auto-generated catch block32                     e.printStackTrace();33                 }34             }35         }36         model.addAttribute("test", test);37         return "fileUpload/details";38     }
      
     

直接暴露在控制层当做参数使用

1     /** 2      * 直接文件获取 3      * @Description:  4      * @param request 5      * @param files 6      * @param result 7      * @return 8      */ 9     @RequestMapping("/saveFile")10     public String saveFile(@RequestParam("files") List
     
       files,HttpServletRequest request) {11 //        public String saveFile(@RequestParam("files") CommonsMultipartFile[] files,HttpServletRequest request) {12         List
      
        fileNames = new ArrayList<>();13         System.out.println(files);14         15         if (null != files && files.size() != 0) {16 //        if (null != files && files.length != 0) {17             for (MultipartFile multipartFile : files) {18                 String fileName = multipartFile.getOriginalFilename();19                 String realPath = request.getServletContext().getRealPath(20                         "/file");21                 fileNames.add(fileName);22                 File parents = new File(realPath);23                 if (!parents.exists()) {24                     parents.mkdirs();25                 }26                 File destFile = new File(parents, fileName);27                 try {28                     multipartFile.transferTo(destFile);29                 } catch (IllegalStateException e) {30                     // TODO Auto-generated catch block31                     e.printStackTrace();32                 } catch (IOException e) {33                     // TODO Auto-generated catch block34                     e.printStackTrace();35                 }36             }37         }38         return "fileUpload/details";39     }
      
     

 uploadFile.jsp

<%@ page language="java" contentType="text/html; charset=UTF-8"    pageEncoding="UTF-8"%><%@ taglib uri="http://www.springframework.org/tags/form" prefix="form" %>
         
     
              select a file
      
      
      
        select files