本sdk主要适用Windows系统bs（web）架构，可支持谷歌Chrome、火狐Firefox、360极速和安全、Edge、IE10+等支持html5的多种浏览器。 主要功能：设置裁切模式、文件格式、色彩模式、图像质量、裁边、拍照、鼠标轮滑缩放预览画面、旋转、1:1预览、适合屏幕预览、条码识别、多设备切换、分辨率选择、获取Base64 编码字符串、添加图片到PDF及合并PDF、读取身份证信息、HTTP上传文件、返回上传结果、设置色彩模式、设置去黑边、设置去底色、设置文件格式、从摄像头中识别二维码、从图片文件中识别二维码、返回二维码识别结果、添加要合并到PDF的文件、添加合并PDF的文件返回结果等，更多功能可参考开发手册。 文豆高拍仪FastSnap影像采集SDK可支持HTML5多浏览器 `function ConnectServer(callback, value) {
if ('WebSocket' in window) {
websocket = new WebSocket(url);
} else if (window.WebSocket) {
websocket = new WebSocket(url);
} else if ('MozWebSocket' in window) {
websocket = new MozWebSocket(url);
} else {
alert("您的浏览器版本过低！请使用360、Chrome、Firefox、Edge、IE10+浏览器！");
}
websocket.onopen = function (e) {
connected = true;
heartCheck();
isSocketConnect = true;
clearInterval(intervalId);
Cam_GetDevCount();
}
websocket.onclose = function (e) {
connected = false;
isSocketConnect = true;
reconnect();
}
websocket.onmessage = function (e) {
onMessage(e);
}
websocket.onerror = function (e) {
isSocketConnect = true;
reconnect();
alert("点击确定后若无画面，请检查【文豆FastSnap】服务是否已开启！")
};
}
function sendMessage(jsonStr) { connected ? websocket.send(jsonStr) : alert("未连接websocket服务器，请确保已运行服务端！") }
/*****************************************************************************************************************/ function cameraProduceMessage(jsonObj) {
if (jsonObj.functionName == "VideoStream") {
img.src = "data:image/jpg;base64," + jsonObj.imgBase64Str;
pMainShowStartX = jsonObj.StartX;
pMainShowStartY = jsonObj.StartY;
img.onload = function () {
MainContext.clearRect(0, 0, MainCanvas.width, MainCanvas.height);
MainContext.drawImage(img, pMainShowStartX, pMainShowStartY);
if (MainCamCutMode == 2) {
MainContext.strokeStyle = 'blue';
MainContext.lineWidth = 2;
MainContext.beginPath();
MainContext.rect(pALastX, pALastY, (pACurrentX - pALastX), (pACurrentY - pALastY));
MainContext.closePath();
MainContext.stroke();
}
}
}
else if (jsonObj.functionName == "VideoStream2") {
img2.src = "data:image/jpg;base64," + jsonObj.imgBase64Str;
pAssistShowStartX = jsonObj.StartX;
pAssistShowStartY = jsonObj.StartY;
img2.onload = function () {
AssistContext.clearRect(0, 0, AssistContext.width, AssistContext.height);
AssistContext.drawImage(img2, pAssistShowStartX, pAssistShowStartY);
}
}
else if (jsonObj.functionName == "GetDevCount") {
var Name = new Array();
Name = jsonObj.DevName.split('|');
GetDevCountAndNameResultCB(jsonObj.DevCount, Name);
}
else if (jsonObj.functionName == "GetDevResolution") {
var resArr = new Array();
resArr = jsonObj.Resolution.split('|');
GetResolutionResultCB(jsonObj.ResolutionCount, resArr);
}
else if (jsonObj.functionName == "Cam_Open") {
var status = jsonObj.success;
if (status == 0) {
isOpenMainCamera = true;
GetCameraOnOffStatus(0);
}
else {
isOpenMainCamera = false;
GetCameraOnOffStatus(-1);
}
}
else if (jsonObj.functionName == "TakeDualCameraPhoto") {
var filePath1 = decodeURIComponent(jsonObj.filePath1);
var filePath2 = decodeURIComponent(jsonObj.filePath2);
GetDualCameraPhotoResultCB(jsonObj.success, filePath1, jsonObj.Abase64, filePath2, jsonObj.Bbase64);
}`
数据上传
`function dataURLtoFile(dataurl, filename) {
//var arr = dataurl.split(','), mime = arr[0].match(/:(.*?);/)[1],
//bstr = atob(arr[1]), n = bstr.length, u8arr = new Uint8Array(n);
var bstr = atob(dataurl);
var n = bstr.length;
var u8arr = new Uint8Array(n);
while (n--) {
u8arr[n] = bstr.charCodeAt(n);
}
var suffix = filename.substring(filename.length - 3, filename.length);
if (suffix == "jpg" || suffix == "JPG")
return new File([u8arr], filename, { type: 'image/jpg' });
if (suffix == "png" || suffix == "PNG")
return new File([u8arr], filename, { type: 'image/png' });
if (suffix == "tif" || suffix == "TIF")
return new File([u8arr], filename, { type: 'image/tiff' });
if (suffix == "pdf" || suffix == "PDF")
new File([u8arr], filename, { type: 'application/pdf' });
return new File([u8arr], filename, { type: 'application/jpg' });`
