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<TITLE>Returning an Image in a Servlet
(Java Developers Almanac Example)
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<h3>
e1036.
Returning an Image in a Servlet</h3>
This example returns to the requestor, an image read from a file:
<pre>
// See also <a href="../javax.servlet/com_mycompany_MyServlet.html" class="eglink"><font size="-1"><b>e1034</b> The Quintessential Servlet</font></a>
// This method is called by the servlet container to process a GET request.
public void doGet(HttpServletRequest req, HttpServletResponse resp) throws IOException {
// Get the absolute path of the image
ServletContext sc = getServletContext();
String filename = sc.getRealPath(<font color="#0066ff"><i>"image.gif"</i></font>);
// Get the MIME type of the image
String mimeType = sc.getMimeType(filename);
if (mimeType == null) {
sc.log("Could not get MIME type of "+filename);
resp.setStatus(HttpServletResponse.SC_INTERNAL_SERVER_ERROR);
return;
}
// Set content type
resp.setContentType(mimeType);
// Set content size
File file = new File(filename);
resp.setContentLength((int)file.length());
// Open the file and output streams
FileInputStream in = new FileInputStream(file);
OutputStream out = resp.getOutputStream();
// Copy the contents of the file to the output stream
byte[] buf = new byte[<font color="#0066ff"><i>1024</i></font>];
int count = 0;
while ((count = in.read(buf)) >= 0) {
out.write(buf, 0, count);
}
in.close();
out.close();
}
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Related Examples
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e1034. <a class="eglink" href="com_mycompany_MyServlet.html?l=rel">
The Quintessential Servlet
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e1035. <a class="eglink" href="GetInit.html?l=rel">
Getting and Setting Initialization Parameters for a Servlet
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e1037. <a class="eglink" href="State.html?l=rel">
Saving Data in a Servlet
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<br>
e1038. <a class="eglink" href="Log.html?l=rel">
Logging a Message in a Servlet
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