标签:jquery java jquery拍照 jquery webcam
前端关键代码:
//自定义样式 <style type="text/css"> #webcam { border: 1px solid #666666; width: 320px; height: 240px; } #photos { border: 1px solid #666666; width: 320px; height: 240px; } .btn { width: 320px; height: auto; margin: 5px 0px; } .btn input[type=button] { width: 150px; height: 50px; line-height: 50px; margin: 3px; } </style> //展示内容 <div id="webcam"></div> <div class="btn"> <input type="button" value="删除" id="delBtn" onclick="delPhoto();"/> <input type="button" value="拍照" id="saveBtn" onclick="savePhoto();"/> </div> <div id="photos"> <img src="" id="img"> </div> //js <script type="text/javascript" src="jquery.webcam.min.js"></script> <script type="text/javascript"> $(function () { var w = 320, h = 240; var pos = 0, ctx = null, saveCB, image = []; var canvas = document.createElement("canvas"); canvas.setAttribute(‘width‘, w); canvas.setAttribute(‘height‘, h); console.log(canvas.toDataURL); if (canvas.toDataURL) { ctx = canvas.getContext("2d"); image = ctx.getImageData(0, 0, w, h); saveCB = function(data) { var col = data.split(";"); var img = image; for(var i = 0; i < w; i++) { var tmp = parseInt(col[i]); img.data[pos + 0] = (tmp >> 16) & 0xff; img.data[pos + 1] = (tmp >> 8) & 0xff; img.data[pos + 2] = tmp & 0xff; img.data[pos + 3] = 0xff; pos+= 4; } if (pos >= 4 * w * h) { ctx.putImageData(img, 0, 0); $.post("${ctx}/common/webcam/uploadPhoto", {type: "data", image: canvas.toDataURL("image/png")}, function(msg){ console.log(msg); pos = 0; $("#img").attr("src", "${ctx}/"+msg); }); } }; } else { saveCB = function(data) { image.push(data); pos+= 4 * w; if (pos >= 4 * w * h) { $.post("${ctx}/common/webcam/uploadPhoto", {type: "pixel", image: image.join(‘|‘)}, function(msg){ console.log(msg); pos = 0; $("#img").attr("src", "${ctx}/"+msg); }); } }; } $("#webcam").webcam({ width: w, height: h, mode: "callback", swffile: "${ctxStatic }/jquery-plugin/jscam_canvas_only.swf", onSave: saveCB, onCapture: function () { webcam.save(); }, debug: function (type, string) { console.log(type + ": " + string); } }); }); //拍照 function savePhoto(){ webcam.capture(); } </script>
java后端代码:
/** * 功能描述:拍照并上传图片 * * @since 2016/5/24 */ @RequestMapping(value = "/uploadPhoto") public void uploadPhoto(HttpServletRequest req, HttpServletResponse resp) throws BusinessException { String basePath = "upload/" + DateUtils.getDate("yyyyMMdd") + "/"; String filePath = req.getSession().getServletContext().getRealPath("/") + basePath; String fileName = DateUtils.getDate("yyyyMMddHHmmss") + ".png"; //默认传入的参数带类型等参数:data:image/png;base64, String imgStr = req.getParameter("image"); if (null != imgStr) { imgStr = imgStr.substring(imgStr.indexOf(",") + 1); } Boolean flag = GenerateImage(imgStr, filePath, fileName); String result = ""; if (flag) { result = basePath + fileName; } this.writeJson(result, resp); } /** * 功能描述:base64字符串转换成图片 * * @since 2016/5/24 */ public boolean GenerateImage(String imgStr, String filePath, String fileName) { try { if (imgStr == null) { return false; } BASE64Decoder decoder = new BASE64Decoder(); //Base64解码 byte[] b = decoder.decodeBuffer(imgStr); //如果目录不存在,则创建 File file = new File(filePath); if (!file.exists()) { file.mkdirs(); } //生成图片 OutputStream out = new FileOutputStream(filePath + fileName); out.write(b); out.flush(); out.close(); return true; } catch (Exception e) { logger.error("生成图片异常:{}", e.getMessage()); return false; } }
参考文章:
http://blog.csdn.net/hfhwfw/article/details/5544408
http://www.xarg.org/project/jquery-webcam-plugin/
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标签:jquery java jquery拍照 jquery webcam
原文地址:http://jiyanle.blog.51cto.com/6932197/1782625