【JavaWeb】SpringMvc 文件上传

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1. 添加上传文件组件支持

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    <bean id="multipartResolver" class="org.springframework.web.multipart.commons.CommonsMultipartResolver"/>

2. Controller部分

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@RequestMapping("upload.do")
    public String upload(@RequestParam("file") MultipartFile file)
            throws IllegalStateException, IOException {
        String basePath = "xxx";
            String path = "";
            if (!file.isEmpty()) {
                if (file.getOriginalFilename().endsWith("txt"))
                    path = basePath + "doc"; 
                else if (file.getOriginalFilename().endsWith("jpg") || file.getOriginalFilename().endsWith("gif")
                        || file.getOriginalFilename().endsWith("png"))
                    path = basePath + "img";
                else
                    path = basePath + "other";
                String fileName = f.getOriginalFilename();
                File tarFile = new File(path, fileName);
                file.transferTo(tarFile);
            }
        return "index.jsp";
    }

3. html部分

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<form action="upload.do" enctype="multipart/form-data" method="post">
        <input type="file" name="file">
        <input type="submit" value="上传">
    </form>

4. 多文件上传

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@RequestMapping("upload.do")
    public String upload(@RequestParam("file") MultipartFile[] file, HttpServletRequest req)
            throws IllegalStateException, IOException {
        String basePath = "xxx";
        for (MultipartFile f : file) {
            String path = "";
            if (!f.isEmpty()) {
                if (f.getOriginalFilename().endsWith("txt"))
                    path = basePath + "doc"; 
                else if (f.getOriginalFilename().endsWith("jpg") || f.getOriginalFilename().endsWith("gif")
                        || f.getOriginalFilename().endsWith("png"))
                    path = basePath + "img";
                else
                    path = basePath + "other";
                String fileName = f.getOriginalFilename();
                File tarFile = new File(path, fileName);
                f.transferTo(tarFile);
            }
        }
        return "index.jsp";