在web應用中是不能訪問本地檔案De，可以把要引用的檔案移到項目中，通過相對路徑擷取。有時候我們就是需要訪問本地檔案，那麼我們可以通過流的形式傳入。例如：
在showPic.jsp中：<body>
<img align="top" src="<%=request.getContextPath()%>/viewListener/viewWareCamera/picCreate.jsp?ppath=<bean:write name='cameraOperateForm' property='picture_postion'/>" width="500" height="400" id="imgg"/>
</body>
在這裡，我們的src通過調用另一個jsp來實現。並且也可以根據需要向另一個jsp傳值。
那麼，在picCreate.jsp中：
<%@ page import="java.io.*" %>
<%
String ppath=request.getParameter("ppath");
String file = "D:/"+ppath;
FileInputStream in = new FileInputStream(new File(file));
OutputStream o = response.getOutputStream();
int l = 0;
byte[] buffer = new byte[4096];
while((l = in.read(buffer)) != -1){
o.write(buffer,0,l);
}
o.flush();
in.close();
o.close();
%>
這樣就可以實現顯示本地的檔案或圖片。
Start building with 50+ products and up to 12 months usage for Elastic Compute Service
1 on 1 presale consultation
24/7 Technical Support 6 Free Tickets per Quarter Faster Response
Alibaba Cloud offers highly flexible support services tailored to meet your exact needs.
A comprehensive suite of global cloud computing services to power your business
Payment Methods We Support
