实现思路如下:
1.设置好拍照背景,如使用红布或者蓝布等等,白墙也可以。
2.选择高清的摄像头,如罗技等高清摄像头,支持的分辨率越高越好。
3.使用ImageCapOnWeb处理拍照。
4.调用控件的start方法开始获取摄像头视频
5.调用cap()方法拍照
6.调用selectRect方法选中头像区域,不满意的话可以手动微调。
7.调用cutSelected方法裁剪使用选中区域
8.保存拍照结果。
代码如下:
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <title>控件测试页面</title> <script type="text/javascript"> function startCam(){ var capActivexObject=document.getElementById('cap1'); //启动摄像头 capActivexObject.start(); } function capPicture1(){ var capActivexObject=document.getElementById('cap1'); capActivexObject.cap(); //控制摄像头拍照 } function selectPic(){ var capActivexObject=document.getElementById('cap1'); capActivexObject.selectRect(0.3,0.25,0.6,0.8);//具体含义请查看文档 } function cutSelectedPic(){ var capActivexObject=document.getElementById('cap1'); capActivexObject.cutSelected(); } function submitToServer(){ //读取控件的拍照结果到hidden输入项中 var base64_data1 = document.getElementById('cap1').jpegBase64Data; if (base64_data1.length==0) { alert('请先拍照!'); return false; } document.getElementById('picData1').value=base64_data1; document.getElementById('picExt1').value='.jpg'; /*注意不同的服务器端技术要配置不同的接收数据的url,可以参考submit.html的示 如asp.net的程序员可以查看submit.aspx,php程序员可以查看submit.php,asp程序员可以查看submit.asp */ //document.forms[0].action="http://localhost:8080/pages/submit.jsp"; alert('请先打开demo6.html配置服务器端程序参数再继续测试!'); return false; document.forms[0].submit(); } </script> </head> <body> <form method="post" > <input type="hidden" id="picData1" name="picData1"/> <input type="hidden" id="picExt1" name="picExt1"/> <input type="hidden" id="picData2" name="picData2"/> <input type="hidden" id="picExt2" name="picExt2"/> <p> <input type="button" value="启动摄像头" onclick="javascript:startCam();" /> <input type="button" value="拍照片" onclick="javascript:capPicture1();" /> <input type="button" value="选中头像区域" onclick="javascript:selectPic();" /> <input type="button" value="裁剪选中区域" onclick="javascript:cutSelectedPic()" /> <input type="button" value="提交到服务器端" onclick="javascript:submitToServer();" /> <br/> <input type="button" value="清除结果" onclick="javascript:document.getElementById('cap1').clear();" /> </p> <object classid="clsid:34681DB3-58E6-4512-86F2-9477F1A9F3D8" id="cap1" width="640" height="480" codebase="../cabs/ImageCapOnWeb.cab#version=2,0,0,0"> <param name="Visible" value="0"> <param name="AutoScroll" value="0"> <param name="AutoSize" value="0"> <param name="AxBorderStyle" value="1"> <param name="Caption" value="scaner"> <param name="Color" value="4278190095"> <param name="Font" value="宋体"> <param name="KeyPreview" value="0"> <param name="PixelsPerInch" value="96"> <param name="PrintScale" value="1"> <param name="Scaled" value="-1"> <param name="DropTarget" value="0"> <param name="HelpFile" value> <param name="PopupMode" value="0"> <param name="ScreenSnap" value="0"> <param name="SnapBuffer" value="10"> <param name="DockSite" value="0"> <param name="DoubleBuffered" value="0"> <param name="ParentDoubleBuffered" value="0"> <param name="UseDockManager" value="0"> <param name="Enabled" value="-1"> <param name="AlignWithMargins" value="0"> <param name="ParentCustomHint" value="-1"> <param name="licenseMode" value="2"> <param name="key1" value=""> <param name="key2" value=""> </object> </form> <script type="text/javascript"> document.all.cap1.SwitchWatchOnly(); //切换到只显示摄像头画面形式,隐藏编辑按钮等图标. </script> </body> </html>
<%@ page contentType="text/html; charset=utf-8" language="java" import="java.sql.*,java.io.*" errorPage="" %> <% String savePath=config.getServletContext().getRealPath("/")+"//"; File tmp_path=new File(savePath); tmp_path.mkdirs(); System.out.println("照片数据保存路径:"+savePath); String pic_base_64_data=request.getParameter("picData"); //如果下面的代码输出true则说明需要调整服务器软件工作参数,解决接受post数据的大小限制问题,例如 //tomcat的话需要在server.xml中配置maxPostSize="0"来解除上传数据的大小限制 <Connector port="8080" protocol="HTTP/1.1" // connectionTimeout="20000" // redirectPort="8443" maxPostSize="0"/> // System.out.println(null==pic_base_64_data); System.out.println("base64 string length:"+pic_base_64_data.length()); String fileFormat=request.getParameter("picExt"); sun.misc.BASE64Decoder decode=new sun.misc.BASE64Decoder(); byte[] datas=decode.decodeBuffer(pic_base_64_data); String filename=String.valueOf(System.currentTimeMillis())+fileFormat; File file=new File(savePath+filename); OutputStream fos=new FileOutputStream(file); System.out.println("图片文件名称:"+filename); fos.write(datas); fos.close(); out.print("<a href='" + request.getContextPath()+"/"+ filename + "'>click here</a>"); out.flush(); out.close(); %>