欢迎使用CSDN-markdown编辑器

        <form id="submitForm" method="post" enctype="multipart/form-data">            <input id="submitFile0" type="file" name="file"/><input id="button0" type="button" value="上传"                                                                   onclick="userPicInfo.submitForm(0);"/><br>            <input id="submitFile1" type="file" name="file"/><input id="button1" type="button" value="上传"                                                                   onclick="userPicInfo.submitForm(1);"/><br>            <input id="submitFile2" type="file" name="file"/><input id="button2" type="button" value="上传"                                                                    onclick="userPicInfo.submitForm(2);"/>        </form>

对应js:

    submitForm: function (i) {        var formData = new FormData();        formData.append('file', $('#submitFile'+i)[0].files[0]);        $.ajax({            url: getRootPath() + "/userPicInfo/uploadPhoto",            type: 'post',            data: formData,            async: false,            cache: false,            contentType: false,            processData: false,            success: function (data) {                if (data.picurl) {                    userPicInfo.infoContents.push(data.picurl)                    $('#info_content_add').val(userPicInfo.infoContents.join(","));                    // var img = document.createElement("img");                    // img.src = data.picurl;                    // document.getElementsByTagName("form")[1].insertBefore(img, document.getElementById("button1"));                }                easyShow(data.msg, 'info');            },            error: function (data) {                easyShow(data.msg, 'info');            }        });    },

controller

    @RequestMapping("/uploadPhoto")    @ResponseBody    public Map<String, Object> uploadFile(@RequestParam("file") MultipartFile file) {        Map<String, Object> map = new HashMap<String, Object>();        try {            InputStream inputStream = file.getInputStream();            byte[] bytes = IOUtils.toByteArray(inputStream);     //TODO 省去将文件上传方法            IOUtils.closeQuietly(inputStream);     //TODO 省去接收上传成功后信息            if (res.getErrCode() == 0 && res.getOriginalLink() != null) {                map.put(RcsParam.SUCCESS, true);                map.put(RcsParam.MSG, "上传图片成功！");                map.put("picurl", res.getOriginalLink());            } else {                map.put(RcsParam.SUCCESS, false);                map.put(RcsParam.MSG, "上传图片失败！");            }        } catch (Exception e) {            map.put(RcsParam.SUCCESS, false);            map.put(RcsParam.MSG, "系统异常");        }        return map;    }