Bootstrap-fileinput插件使用教程 支持多文件上传

*1.bootstrap-fileinput 插件git下载地址

*

https://github.com/kartik-v/bootstrap-fileinput.git

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2.解决使用bootstrap-fileinput得到返回值

上传图片

        $("#file-0a").fileinput({            uploadUrl : "/upload_img",//上传图片的url            allowedFileExtensions : [ 'jpg', 'png', 'gif' ],            overwriteInitial : false,            maxFileSize : 1000,//上传文件最大的尺寸            maxFilesNum : 1,//上传最大的文件数量            initialCaption: "请上传商家logo",//文本框初始话value            //allowedFileTypes: ['image', 'video', 'flash'],            slugCallback : function(filename) {                return filename.replace('(', '_').replace(']', '_');            }        });

注意上传图片事件完之后，得到返回值写法

        $('#file-0a').on('fileuploaded', function(event, data, previewId, index) {             var form = data.form, files = data.files, extra = data.extra,              response = data.response, reader = data.reader;              console.log(response);//打印出返回的json              console.log(response.paths);//打印出路径                });

jsp页面

<input id="file-0a" class="file" type="file" multiple                        data-min-file-count="1" name="upload_logo">

其中data-min-file-count=”1”是指文件上传最低数量

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3.服务端代码

采用了spring自带插件上传，框架为Springmvc
Bean

import java.util.List;public class Picture {    private List<String> paths;    public List<String> getPaths()    {        return paths;    }    public void setPaths(List<String> paths)    {        this.paths = paths;    }   }

Controller

    @ResponseBody    @RequestMapping(value="upload_img",method=RequestMethod.POST)    public Picture uploadImage(@RequestParam MultipartFile[] upload_logo) throws IOException{        log.info("上传图片");        Picture pic = new Picture();        List<String> paths = new ArrayList<String>();        String dir = UploadUtil.getFolder();        for(MultipartFile myfile : upload_logo){               if(myfile.isEmpty()){                   log.info("文件未上传");               }else{                   log.info("文件长度: " + myfile.getSize());                   log.info("文件类型: " + myfile.getContentType());                   log.info("文件名称: " + myfile.getName());                   log.info("文件原名: " + myfile.getOriginalFilename());                   log.info("========================================");                //上传文件 返回路径                String path = UploadUtil.writeFile(myfile.getOriginalFilename(), dir, myfile.getInputStream());                log.info("文件路径:"+path);                paths.add(path);            }           }         pic.setPaths(paths);        return pic;    }

uploadUtil

private static final Logger log = LoggerFactory.getLogger(UploadUtil.class);    private UploadUtil() {    }    private static SimpleDateFormat fullSdf = new SimpleDateFormat("yyyyMMddHHmmssSSS");    private static SimpleDateFormat folder = new SimpleDateFormat(            "yyyy" + File.separator + "MM" + File.separator + "dd");    /**     * 返回yyyy File.separator MM File.separator dd格式的字符串     *      * @return     */    public static String getFolder() {        return folder.format(new Date());    }/**     * 文件上传     *      * @param srcName     *            原文件名     * @param dirName     *            目录名     * @param input     *            要保存的输入流     * @return 返回要保存到数据库中的路径     */    public static String writeFile(String srcName, String dirName, InputStream input) throws IOException {        log.info(srcName);        // 取出上传的目录，此目录是tomcat的server.xml中配置的虚拟目录        String uploadDir = ContextUtil.getSysProp("upload_dir");//设置你上传路径        // 取出虚拟目录的访问路径        String virtualDir = ContextUtil.getSysProp("virtual_dir");//设置你虚拟目录访问路径        // 重命名文件        if (null != srcName) {            srcName = srcName.substring(srcName.indexOf("."));        } else {            srcName = ".jpg";        }        String filename = "";        // 得到要上传的文件路径        filename = uploadDir + File.separator + dirName + File.separator + fullSdf.format(new Date()) + srcName;        // 得到将要保存到数据中的路径        String savePath = filename.replace(uploadDir, "");        savePath = virtualDir + savePath.replace("\\", "/");        File file = new File(filename);        if (!file.getParentFile().exists()) {            file.getParentFile().mkdirs();        }        FileOutputStream fos = new FileOutputStream(file);        // 一次30kb        byte[] readBuff = new byte[1024 * 30];        int count = -1;        while ((count = input.read(readBuff, 0, readBuff.length)) != -1) {            fos.write(readBuff, 0, count);        }        fos.flush();        fos.close();        input.close();        return savePath;    }

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4.解决上传时候遇到的一些问题

如遇见点击上传之后，进度条显示为100%，jsp页面显示[Object,obejct]，那么注意你后台返回的是否为json对象。
如遇其他问题，可以留言，博主会尽快回复。

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