java 获取文件返回 pdf文件并打印

2/10/2017来源:ASP.NET技巧人气:1324

<%@ page language="java" import="java.util.*,java.io.*"
pageEncoding="UTF-8"%>
<%
String path = request.getContextPath();
String basePath = request.getScheme() + "://"
    + request.getServerName() + ":" + request.getServerPort()
    + path + "/";
%>

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
   <base href="<%=basePath%>">
</head>
<%
   out.clear();
   out = pageContext.pushBody();
   response.setContentType("application/pdf");
   try {
       String _fileName=request.getAttribute("fileName").toString();
      String strPdfPath = new String(_fileName);
    //判断该路径下的文件是否存在
    File file = new File(strPdfPath);
    if (file.exists()) {
     DataOutputStream temps = new DataOutputStream(response
       .getOutputStream());
     DataInputStream in = new DataInputStream(
       new FileInputStream(strPdfPath));

     byte[] b = new byte[2048];
     while ((in.read(b)) != -1) {
      temps.write(b);
      temps.flush();
     }
     in.close();
     temps.close();
    } else {
     out.PRint(strPdfPath + " 文件不存在!");
    }
   } catch (Exception e) {
    out.println(e.getMessage());
   }
%>
<body>
   <br>
</body>

</html>

java代码只需要查询当前的文件,获取到文件的路径+名称 放入model,在页面打印出来即可 生成pdf文件打印出来