I tried to find this error on the internet, but I could not solve my issue. I'm trying to save an image in a local folder in my project and I used the following tutorial to do that:
http://docs.oracle.com/javaee/6/tutorial/doc/glraq.html
I received no error when I compile the code, but I received a NullPointerException. This is my jsp:
<form action="uploadImagem.do" method="post" enctype="multipart/form-data"
name="productForm" id="productForm"><br><br>
<form method="POST" action="upload" enctype="multipart/form-data" >
File:
<input type="file" name="file" id="file" /> <br/>
Destination:
<input type="text" value="/tcc_SI_M_12 - 12-10-2016_v1/images" name="destination" disabled/>
</br>
<input type="submit" value="Upload" name="upload" id="upload" />
</form>
And this is my servlet:
@WebServlet("/uploadImagem.do")
public class uploadImagem extends HttpServlet {
private static final long serialVersionUID = 1L;
private final static Logger LOGGER =
Logger.getLogger(FileUpload.class.getCanonicalName());
protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
// Create path components to save the file
final String path = request.getParameter("destination");
System.out.println("Parametros: " + path);
final Part filePart = request.getPart("file");
final String fileName = getFileName(filePart);
OutputStream out = null;
InputStream filecontent = null;
final PrintWriter writer = response.getWriter();
try {
out = new FileOutputStream(new File(path + File.separator
+ fileName));
filecontent = filePart.getInputStream();
int read = 0;
final byte[] bytes = new byte[1024];
while ((read = filecontent.read(bytes)) != -1) {
out.write(bytes, 0, read);
}
writer.println("New file " + fileName + " created at " + path);
LOGGER.log(Level.INFO, "File{0}being uploaded to {1}",
new Object[]{fileName, path});
} catch (FileNotFoundException fne) {
writer.println("You either did not specify a file to upload or are "
+ "trying to upload a file to a protected or nonexistent "
+ "location.");
writer.println("<br/> ERROR: " + fne.getMessage());
LOGGER.log(Level.SEVERE, "Problems during file upload. Error: {0}",
new Object[]{fne.getMessage()});
} finally {
if (out != null) {
out.close();
}
if (filecontent != null) {
filecontent.close();
}
if (writer != null) {
writer.close();
}
}
}
private String getFileName(final Part part) {
final String partHeader = part.getHeader("content-disposition");
LOGGER.log(Level.INFO, "Part Header = {0}", partHeader);
for (String content : part.getHeader("content-disposition").split(";")) {
if (content.trim().startsWith("filename")) {
return content.substring(
content.indexOf('=') + 1).trim().replace("\"", "");
}
}
return null;
}
Please, mind that I've made some changes in the tutorial above. Also, I included and System.out to show me the valor in the variables and I received null.
Can you please help me?
Thank's a lot!
