commons-fileupload 多文件上传

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

<dependency> <groupId>commons-fileupload</groupId> <artifactId>commons-fileupload</artifactId> <version>1.3.1</version></dependency>

public final void upload() throws Exception {        final StringBuilder result = new StringBuilder();        final DiskFileItemFactory dfif = new DiskFileItemFactory();        final ServletFileUpload sfu = new ServletFileUpload(dfif);        // 对requests对象进行解析,并把表单中的每一个输入项包装成一个fileItem对象,并返回一个保存了所有FileItem的list集合.        final List<FileItem> fileItems = sfu.parseRequest(getRequest());        final Iterator<FileItem> iter = fileItems.iterator();        final String path = "F:/resources/Test/";        FileItem item = null;        String name = null;        int error = 0;        int length = 0;        // 设置内存缓冲区的大小,默认值为10K,如果文件大于10K,将使用临时文件缓存上传文件.        dfif.setSizeThreshold(10 * 1024);        dfif.setRepository(new File(path));        // 设置上传文件总量的最大值 500M        sfu.setSizeMax(500 * 1024 * 1024);        // 设置上传文件最大值 其中文件大小只要有一个超过 (100M) ,1024KB==1M 所有文件将不能上传        sfu.setFileSizeMax(100 * 1024 * 1024);        result.append("{\"files\":[");        while (iter.hasNext()) {            System.out.println(iter.hasNext());            item = iter.next();            if (!item.isFormField()) {                length++;                name = item.getName();                name = System.currentTimeMillis() + name.substring(name.lastIndexOf("."), name.length());                result.append("\"").append(name).append("\"").append(!iter.hasNext() ? "" : ",");                item.write(new File(path + name));            }        }        result.append("],\"error\":").append(error).append(",\"success\":").append(length - error)                .append(",\"path\":\"").append(path).append("\"}");        renderJson(result.toString());    }