java项目中，如何实现上传图片

具体在service层和controller层该如何写呢，请求详解~

http://blog.csdn.net/qq_34309305/article/details/66968584
这里实现了图片上传的功能，还有原代码

建议用插件比如uploadFile，都有教程，功能强大，还是经过多次测试，性能稳定的

前段时间刚做的，写成了博客，不懂的可以交流：http://blog.csdn.net/xuanzhangran/article/details/54928997

http://blog.csdn.net/u013772876/article/details/68488737

可以用FormData来上传图片；

 @ResponseBody
    @RequestMapping(value = "/updateCamPic.html", method = RequestMethod.POST)
    public String updateCamPic(@RequestParam(value = "file", required = false) MultipartFile file,String ipAddress) {
        MultipartFile cf = file;
        String name = cf.getOriginalFilename();
        try {
            name = ipAddress.replace("\\.", "")+name;
            String filePath = this.getRequest().getSession().getServletContext().getRealPath("/");
            FileUtils.writeByteArrayToFile(new File(filePath + "//images//" +name), cf.getBytes());
        } catch (Exception e) {
            logger.error(e.getMessage(), e);
        }
        return name;
    }

 function updateCamPic(ipAddress) {
            var fileObjA = document.getElementById("fileA").files[0];
            var formData = new FormData();
            formData.append("file", fileObjA);
            formData.append("ipAddress", ipAddress);
            $("#btnSubmit").attr("disabled", "disabled");
            $.ajax({
                type: 'POST',
                async: false,
                url: 'updateCamPic.html',
                data: formData,
                contentType: false,
                processData: false,
                success: function (data) {
                    $("#picurl").val(data);
                },
                error: function (a, b, c) {
                    if (a.status == 404) {
                        alert("404");
                    }
                    else if (a.status != 0) {
                        alert(a.status + ":" + a.responseJSON.Message);
                    }
                }
            }).fail(function (a,b,c) {             
                alert("接口调用失败"+a.responseJSON.description)
            }).complete(function () {
                $("#btnSubmit").removeAttr("disabled");
            });
        }   

 上传照片：</label><div class="formControls col-3"><input type="file" name="fileA"  id="fileA" accept=".gif,.jpg,.jpeg,.png" /></div>

使用multipartfile 上传

http://blog.csdn.net/one_isi_all/article/details/46610089 jsp页面通过ajax上传多张图片