stamp.jsp

来自「基于JAVAJASPSERVLET实现的WEB电子签章程序」· JSP 代码 · 共 30 行

  <%@ page language="java" import="java.util.*" pageEncoding="gbk"%>
<jsp:directive.page import="com.synu.elecsignature.SummaryEncryDao"/>
<jsp:directive.page import="com.synu.elecsignature.VerifyUserDao"/>

<%
    String id = request.getParameter("id");
    String uid = request.getParameter("uid");
    java.sql.Blob stamp = null;
    if(uid == null){
    SummaryEncryDao seDao = new SummaryEncryDao();
    if(id !=null){
 	   stamp = seDao.getStampById(id);
   
	

    }
    }else{
    	VerifyUserDao vDao = new VerifyUserDao();
    	stamp = vDao.GetStampById(uid);
    }
     if(stamp !=null){
	       	response.setContentType ("image/gif"); 
	      	 	java.io.OutputStream os = response.getOutputStream ();
	       	 	os.write(stamp.getBytes(1,(int)stamp.length())); 
		        os.flush();
				os.close();
	}
	 out.clear(); 
  	 out = pageContext.pushBody();
%>