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    /*!
     * jQuery Form Plugin
     * version: 3.51.0-2014.06.20
     * Requires jQuery v1.5 or later
     * Copyright (c) 2014 M. Alsup
     * Examples and documentation at: http://malsup.com/jquery/form/
     * Project repository: https://github.com/malsup/form
     * Dual licensed under the MIT and GPL licenses.
     * https://github.com/malsup/form#copyright-and-license
     */
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    jquery.form.min.js
                    <input type="button" value="选择文件" onclick="uploadImage(this);" />(大小:720*428)
                    <div id="fileIpt">
                        <input type="file" accept="image/*" style="display: none" class="fileUpload" name="fileData" onchange="uploadImg(this)" />
                    </div>
    html
        <script src="../admin/lib/jquery.form.min.js"></script>
        <script>
        function uploadImage(obj) {
            $(obj).parent().find('.fileUpload').click();
        }
        //上传主题背景图片
        function uploadImg(obj) {
            var fileIpt = $(obj).parent();
            var _form = $("<form></form>");
            _form.append(obj);
            console.log(_form);
            _form.ajaxSubmit({
                url: "<%=basePath%>file/upload",
                type: "post",
                enctype: "multipart/form-data",
                contentType: "application/x-www-form-urlencoded; charset=utf-8",
                dataType: "json",
                success: function (data) {
                    if(data.error==0)
                       {
                        $("input[name='HeadImage']").val(data.url);
                           alert("上传成功");
                       }else
                    {
                           alert("上传失败");
                    }
                }
    
            });
            var file_element = '<input style="display: none" class="fileUpload" name="fileData" onchange="uploadImg(this)" type="file">';
            $(fileIpt).append(file_element);
        }
    View Code
        @RequestMapping("/upload")
        public void list(MultipartFile fileData,HttpServletResponse response) throws IOException{
            InputStream is=fileData.getInputStream();
            byte[] buf=new byte[1024];
            is.read(buf, 0, buf.length);
            System.out.println("HeadImage:"+new String(buf));
            response.getWriter().write("{"error":0,"url":"http://bpic.588ku.com/back_pic/03/53/08/325795e353b2a10.jpg!/fh/300/quality/90/unsharp/true/compress/true"}");;            
        }
    java后台
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  • 原文地址:https://www.cnblogs.com/liandy0906/p/5745114.html
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