Pessoal boa tarde,
Estou com um problema, pesquisei em vários lugares diferentes mas não consegui resolver meu problema.
O problema é o seguinte, eu tenho uma pagina XHTML e ao chama-la eu quero que carregue uma imagem que está em c:\Contratos.
Eu fiz o Seguinte
Arquivo WEB.xml
<servlet>
<servlet-name>ImageServlet</servlet-name>
<servlet-class>br.com.stefanini.sgi.servlet.ImageServlet</servlet-class>
<load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>ImageServlet</servlet-name>
<url-pattern>/image/*</url-pattern>
</servlet-mapping>Servlet ImageServlet
package br.com.stefanini.sgi.servlet;
import java.io.BufferedInputStream;
import java.io.BufferedOutputStream;
import java.io.Closeable;
import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.net.URLDecoder;
import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
/**
* The Image servlet for serving from absolute path.
*
* @author BalusC
* @link http://balusc.blogspot.com/2007/04/imageservlet.html
*/
public class ImageServlet extends HttpServlet {
// Constants
// ----------------------------------------------------------------------------------
private static final int DEFAULT_BUFFER_SIZE = 10240; // 10KB.
// Properties
// ---------------------------------------------------------------------------------
private String imagePath;
// Actions
// ------------------------------------------------------------------------------------
public void init() throws ServletException {
// Define base path somehow. You can define it as init-param of the
// servlet.
this.imagePath = "c:/Contratos";
// In a Windows environment with the Applicationserver running on the
// c: volume, the above path is exactly the same as "c:\images".
// In UNIX, it is just straightforward "/images".
// If you have stored files in the WebContent of a WAR, for example in
// the
// "/WEB-INF/images" folder, then you can retrieve the absolute path by:
// this.imagePath = getServletContext().getRealPath("/WEB-INF/images");
}
protected void doGet(HttpServletRequest request,
HttpServletResponse response) throws ServletException, IOException {
// Get requested image by path info.
String requestedImage = request.getPathInfo();
// Check if file name is actually supplied to the request URI.
if (requestedImage == null) {
// Do your thing if the image is not supplied to the request URI.
// Throw an exception, or send 404, or show default/warning image,
// or just ignore it.
response.sendError(HttpServletResponse.SC_NOT_FOUND); // 404.
return;
}
// Decode the file name (might contain spaces and on) and prepare file
// object.
File image = new File(imagePath, URLDecoder.decode(requestedImage,
"UTF-8"));
// Check if file actually exists in filesystem.
if (!image.exists()) {
// Do your thing if the file appears to be non-existing.
// Throw an exception, or send 404, or show default/warning image,
// or just ignore it.
response.sendError(HttpServletResponse.SC_NOT_FOUND); // 404.
return;
}
// Get content type by filename.
String contentType = getServletContext().getMimeType(image.getName());
// Check if file is actually an image (avoid download of other files by
// hackers!).
// For all content types, see:
// http://www.w3schools.com/media/media_mimeref.asp
if (contentType == null || !contentType.startsWith("image")) {
// Do your thing if the file appears not being a real image.
// Throw an exception, or send 404, or show default/warning image,
// or just ignore it.
response.sendError(HttpServletResponse.SC_NOT_FOUND); // 404.
return;
}
// Init servlet response.
response.reset();
response.setBufferSize(DEFAULT_BUFFER_SIZE);
response.setContentType(contentType);
response.setHeader("Content-Length", String.valueOf(image.length()));
response.setHeader("Content-Disposition",
"inline; filename=\"" + image.getName() + "\"");
// Prepare streams.
BufferedInputStream input = null;
BufferedOutputStream output = null;
try {
// Open streams.
input = new BufferedInputStream(new FileInputStream(image),
DEFAULT_BUFFER_SIZE);
output = new BufferedOutputStream(response.getOutputStream(),
DEFAULT_BUFFER_SIZE);
// Write file contents to response.
byte[] buffer = new byte[DEFAULT_BUFFER_SIZE];
int length;
while ((length = input.read(buffer)) > 0) {
output.write(buffer, 0, length);
}
} finally {
// Gently close streams.
close(output);
close(input);
}
}
// Helpers (can be refactored to public utility class)
// ----------------------------------------
private static void close(Closeable resource) {
if (resource != null) {
try {
resource.close();
} catch (IOException e) {
// Do your thing with the exception. Print it, log it or mail
// it.
e.printStackTrace();
}
}
}
}
e minha página que está em “WebContent/restrito/fornecedor”
Pagina xhtml “fornecedor_consulta.xhtml”
<p:column style="text-align:center;">
<f:facet name="header">
#{msg.coluna_contrato}
</f:facet>
<h:graphicImage value="image/pesquisar.png" />
<img src="image/pesquisar.png" />
</p:column>Eu achei essa forma em vários lugares de configuração, porém ao carregar minha página ele não exibe a imagem.
Como eu faço para que essa página chame a minha Servlet e carregue a imagem?
Obrigado pela ajuda