springMVC文件上传（转）

原文链接：

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

在Spring-mvc.xml注入bean

 1     <!-- 配置文件上传，如果没有使用文件上传可以不用配置，当然如果不配，那么配置文件中也不必引入上传组件包 -->

 2     <bean id="multipartResolver"

 3         class="org.springframework.web.multipart.commons.CommonsMultipartResolver">

 4         <!-- 默认编码 -->

 5         <property name="defaultEncoding" value="utf-8" />

 6         <!-- 文件大小最大值 -->

 7         <property name="maxUploadSize" value="10485760000" />

 8         <!-- 内存中的最大值 -->

 9         <property name="maxInMemorySize" value="40960" />

10     </bean>

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List

16     private List<MultipartFile> 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<MultipartFile> getFiles() {

43         return files;

44     }

45

46     public void setFiles(List<MultipartFile> 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<MultipartFile> files = test.getFiles();//获取文件

13         List<String> 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 block

29                     e.printStackTrace();

30                 } catch (IOException e) {

31                     // TODO Auto-generated catch block

32                     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<MultipartFile> files,HttpServletRequest request) {

11 //        public String saveFile(@RequestParam("files") CommonsMultipartFile[] files,HttpServletRequest request) {

12         List<String> 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 block

31                     e.printStackTrace();

32                 } catch (IOException e) {

33                     // TODO Auto-generated catch block

34                     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" %>

<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">

<html>

<head>

<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">

<title>Insert title here</title>

</head>

<body>

    <form:form action="save" enctype="multipart/form-data" method="post" commandName="test">

        select a file<input type="file" name="files" multiple><!-- 单文件上传 --><br>

        select files<!-- <input type="file" name="files" multiple> --><!-- 多文件上传 --><br>

        <input type="submit" value="上传">

    </form:form>

</body>

</html>

我的研究：

 @ResponseBody

    @RequestMapping(value = {"/upload_merch_access_file"})

    public Map uploadMerchAccessFile(HttpServletRequest request) {

        Map resultMap = new HashMap<>();

        String filePath = "";

        MultipartHttpServletRequest multipartRequest = (MultipartHttpServletRequest) request;

        MultipartFile multipartFile = multipartRequest.getFile("file");

        String fileName = multipartFile.getOriginalFilename();

        File targetFile = new File(HUIXIN_BACCESS_FILE + "\\" + DateUtil.getDate(), fileName);

        if (!targetFile.exists()) {

            targetFile.mkdirs();

        } else {

            resultMap.put("statusCode", );

            resultMap.put("message", "已存在同名文件!");

            targetFile.delete();

            targetFile.mkdirs();

            //return resultMap;

        }

        try {

            multipartFile.transferTo(targetFile);

            filePath = targetFile.getPath();

        } catch (Exception e) {

            logger.info("上传批量开通文件异常{}");

            logger.error(e.getMessage());

            resultMap.put("statusCode", );

            resultMap.put("message", "上传批量开通文件失败!");

            return resultMap;

        }

        resultMap.put("statusCode", );

        resultMap.put("message", "批量开通上传成功!");

        resultMap.put("filename", fileName);

        resultMap.put("filePath", filePath);

        return resultMap;

    }

这个类：

MultipartFile

getName获取的是fileName

getOriginalFilename获取的是相对路径的Name，切割最后一个\到末尾

transferTo：移动

这个没看源码。

巴特西

springMVC文件上传（转）

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