jsp页面实现对摄像头的调用 能录取图像

import java.io.File; import java.io.FileOutputStream; import java.io.IOException; import java.io.PrintWriter; import java.util.UUID; import javax.servlet.ServletException; import javax.servlet.http.HttpServlet; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; @SuppressWarnings("serial") public class testServlet extends HttpServlet { public void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { System.out.println("执行保存方法"); // 这个方法是swf提交，如果是拍照的，有三次提交，如果是修改图片的，则有两次提交。 String dirPath = getServletConfig().getServletContext() .getRealPath("/"); String fileName = UUID.randomUUID().toString() + ".jpg"; // request.getParameter("radom");页面传过来的参数 try { File file = new File(dirPath + fileName); if (!file.exists()) { file.createNewFile(); } FileOutputStream dos = new FileOutputStream(file); int x = request.getInputStream().read(); while (x > -1) { dos.write(x); x = request.getInputStream().read(); } dos.flush(); dos.close(); } catch (Exception e) { e.printStackTrace(); } // 此处必需返回这种格式,要不然不会第二次调用 // {"data":{"urls":["1243251304_big.jpg"]},"status":1,"statusText":"保存存成功!"} String s = "{\"data\":{\"urls\":[\"" + fileName + "\"]},\"status\":1,\"statusText\":\"保存存成功\"}"; response.setContentType("text/html"); PrintWriter out = response.getWriter(); out.println(s); System.out.println(s); out.flush(); out.close(); } public void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { this.doGet(request, response); } }