java程序中调用摄像头实现jsp程序摄像头数据采集

来源：互联网发布：java在线考试系统源码编辑：程序博客网时间：2024/04/28 15:41

在项目中要用到jsp页面实现网页采集摄像头图像，并实现上传的功能，页面主要js调用的，所以可以使用多种语言php,asp等都可以使用，而且是跨浏览器的。

使用方法1：

下载 printscreen4web-jsp.war（最下面有下载地址）,然后放到tamcat目录webapp文件夹下面，启动tomcat，访问http://127.0.0.1:8080/printscreen4web-jsp/

主要调用文件：1.index.html.2avatar.jsp

<%@ page language="java" import="java.util.*" pageEncoding="gbk"%>
<%@page import="java.net.URLEncoder"%>
<%@page import="com.censoft.zzportal.util.*"%>
<%@page import="java.io.FileOutputStream"%>
<%@page import="java.net.URLDecoder"%>

<%!
String imagepath1="";
//编辑页面中包含 camera.swf 的 HTML 代码
public String renderHtml(String id,String basePath,String input)
{
String outinput="";
try {
outinput = URLDecoder.decode(input);
}catch(Exception e)
{
System.out.println("解码错误!");
}
String[] tmp_input=outinput.split("@");//input传递的类型和uid
//System.out.println(input+","+tmp_input.length);

String uc_api =URLEncoder.encode(basePath+"upload/avatar.jsp");

String urlCameraFlash = "camera.swf?nt=1&inajax=1&appid=1&input="+input+"&uploadSize=1000&ucapi="+uc_api;
urlCameraFlash = "<script src=\"common.js?B6k\" type=\"text/javascript\"></script><script type=\"text/javascript\">document.write(AC_FL_RunContent(\"width\",\"450\",\"height\",\"253\",\"scale\",\"exactfit\",\"src\",\""+urlCameraFlash+"\",\"id\",\"mycamera\",\"name\",\"mycamera\",\"quality\",\"high\",\"bgcolor\",\"#ffffff\",\"wmode\",\"transparent\",\"menu\",\"false\",\"swLiveConnect\",\"true\",\"allowScriptAccess\",\"always\"));</script>";

return urlCameraFlash;
}
public String getFileExt(String fileName) {
// 下面取到的扩展名错误，只有三位，而如html的文件则有四位
// extName = fileName.substring(fileName.length() - 3, fileName.length()); //扩展名
int dotindex = fileName.lastIndexOf(".");
String extName = fileName.substring(dotindex, fileName.length());
extName = extName.toLowerCase(); //置为小写
return extName;
}
private byte[] getFlashDataDecode(String src)
{
char []s=src.toCharArray();
int len=s.length;
byte[] r = new byte[len / 2];
for (int i = 0; i < len; i = i + 2)
{
int k1 = s[i] - 48;
k1 -= k1 > 9 ? 7 : 0;
int k2 = s[i + 1] - 48;
k2 -= k2 > 9 ? 7 : 0;
r[i / 2] = (byte)(k1 << 4 | k2);
}
return r;
}
public boolean saveFile(String path,byte[]b){
try{
FileOutputStream fs = new FileOutputStream(path);
fs.write(b, 0, b.length);
fs.close();
return false;
}catch(Exception e){
return true;
}
}
%>

<%
String uploadtype= request.getParameter("uploadtype");
//图片上传类型:头像,logo,图片分别对应参数:head,logo,pic没有传递，默认为PIC
if("".equals(uploadtype))
{
uploadtype="pic";
}
//最终裁剪好的图片存放位置
String uid=request.getParameter("uid");
imagepath1=uploadtype+"/"+uid+"_big.jpg";

String action= request.getParameter("a");
//String input=request.getParameter("input");
String path = request.getContextPath();
String infoFilePath="";
String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
if(action==null){
%>
<!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=GBK" />
<style>
body{
margin: 0;
border: 0;
}
</style>
<script type="text/javascript">
function updateavatar() {
var img1="<%=imagepath1%>";
if(window.opener.document.getElementById("imgpath1"))
{
window.opener.document.getElementById("imgpath1").value=img1;
window.opener.document.getElementById("showimg1").src="upload/"+img1;
}
window.close();
}

</script>
</head>
<body>
<%
out.print(renderHtml("5",basePath,URLEncoder.encode(uploadtype+"@"+uid)));
%>
</body></html>
<%
}else if("uploadavatar".equals(action)){//上传临时图片,可以自己实现
//System.out.println(action);
UploadUtil uploadUtil = new UploadUtil();
boolean isOk = uploadUtil.initParam(pageContext,request);
if (isOk == false)
{
System.out.println("页面出错：" + uploadUtil.getMsg());
return;
}
//上传附件
isOk = uploadUtil.uploadFile("");
if (isOk == false)
{
System.out.println("页面出错：" + uploadUtil.getMsg());
return;
}
Map map = uploadUtil.getUploadFiles();
if (map == null)
{
System.out.println("页面出错：上传附件失败");
}
if (map.size() == 0)
{
System.out.println("页面出错：没有上传附件");
return;
}
//获取附件文件名和存储文件路径
for (Iterator iter = map.keySet().iterator(); iter.hasNext();)
{
infoFilePath = (String) iter.next();
String infoFileName = (String) map.get(infoFilePath);
//infoFilePath=infoFilePath.substring(infoFilePath.lastIndexOf("\\")+1);
//System.out.println(infoFilePath);
//infoFilePath=infoFilePath.substring(infoFilePath.indexOf("webapps")+8);
infoFilePath=infoFilePath.replaceAll("\\\\", "/");
//System.out.println(basePath+"upload"+infoFilePath);
out.clear();
out.print(basePath+"upload"+infoFilePath);
}

}else if("rectavatar".equals(action)){//缩略图
String avatar1 = request.getParameter("avatar1");//大
String avatar2 = request.getParameter("avatar2");//中
String avatar3 = request.getParameter("avatar3");//小
String output ="";
try {
output = URLDecoder.decode(request.getParameter("input"));
}catch(Exception e)
{
System.out.println("解码错误!");
}

String[] tmp_input=output.split("@");//input传递的类型和uid
String pathff = request.getSession().getServletContext().getRealPath("/")+ "upload\\";
String imgfilepath=pathff+tmp_input[0];
imagepath1=imgfilepath+"/"+tmp_input[1]+"_big.jpg";

out.clear();
boolean a1=saveFile(imagepath1,getFlashDataDecode(avatar1));

if(a1){
out.print("<?xml version=\"1.0\" ?><root><face success=\"0\"/></root>");
}else{
out.print("<?xml version=\"1.0\" ?><root><face success=\"1\"/></root>");
}

}
%>

最后printscreen4web-jsp.war下载地址：http://602.s21-2.faidns.com/2872602/0/ABUIABAAGAAgs4y-mQUol8TuuwM?f=printscreen4web-jsp.war&v=1395639859

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