rendering of images stored in the remote path (Jdev 11.4)

Hello

I want to make the image of the remote path using the adf:image tag, but I am not able to view the images of the remote path.
If I place the images in the images web - inf I'm able to display.

Please let me know if there is a way to display images of the remote path except the path of the application?

Thank you.

Hello

If the image is in the remote path then you need to create an imageservlet which will have a path as a parameter and returns the binary stream of the output image.
would help to see if more

package servlets;

import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.io.PrintWriter;

import java.net.URL;

import java.util.Date;
import java.util.HashMap;
import java.util.Map;

import javax.servlet.*;
import javax.servlet.http.*;

import oracle.adf.model.BindingContext;

import oracle.jbo.ApplicationModule;
import oracle.jbo.Row;
import oracle.jbo.ViewObject;
import oracle.jbo.uicli.binding.JUApplication;

public class GetResource extends HttpServlet {

    private Map mimetypes;

    public void init(ServletConfig config) throws ServletException {
        super.init(config);
        logFine("GetResource servlet initialized");
        registerMimeTypes();
        logFine("GetResource servlet initialized");
    }

    private void logFine(String msg) {
        System.out.println("[" + new Date() + "]  : " +  msg);
    }
    private void registerMimeTypes() {
        mimetypes = new HashMap();
        mimetypes.put("bmp", "image/bmp");
        mimetypes.put("gif", "image/gif");
        mimetypes.put("jpe", "image/jpeg");
        mimetypes.put("jpeg", "image/jpeg");
        mimetypes.put("jpg", "image/jpeg");
        mimetypes.put("png", "image/png");
        mimetypes.put("tiff", "image/tiff");
        mimetypes.put("tif", "image/tiff");
        mimetypes.put("ico", "image/x-icon");
        mimetypes.put("txt", "text/plain");
        mimetypes.put("pdf", "application/pdf");
    }

    public void doGet(HttpServletRequest request,
                      HttpServletResponse response) throws ServletException,
                                                           IOException {
        processRequest(request, response);
    }

    public void doPost(HttpServletRequest request,
                       HttpServletResponse response) throws ServletException,
                                                            IOException {
        processRequest(request, response);
    }

    private void processRequest(HttpServletRequest request,
                                HttpServletResponse response) throws ServletException,
                                                                     IOException {
        logFine("========get resource request========");
        Map map = getQueryStringMap(request);
        String path = map.get("path");

        logFine("requested resource : " + path);
        /*URL u = new URL("file://" + url.toString());*/
        File file=new File(path.toString());
        String _file = file.getName();
        logFine("URL : " + path);
        logFine("File Name : " + _file);
        String _ext =
            _file.substring(_file.lastIndexOf(".") + 1, _file.length());
        String mimeType = mimetypes.get(_ext.toLowerCase());
        if (mimeType == null) {
            logFine("Mime Type was null");
            return;
        }
        logFine("Mime Type of file : " + mimeType);
        response.setContentType(mimeType);
        InputStream is = new FileInputStream(url.toString());
        OutputStream out = response.getOutputStream();
        byte b[] = new byte[1024];
        int read = -1;
        logFine("start read-write operation");
        while ((read = is.read(b)) != -1) {
            out.write(b, 0, read);
        }
        logFine("end read-write operation");
        is.close();
        out.close();
        logFine("========end resource request========");
    }

    public Map getQueryStringMap(HttpServletRequest request) {
        Map map = new HashMap();
        if (request.getQueryString() != null) {
            if (request.getQueryString().isEmpty())
                return map;
            String[] params = request.getQueryString().split("&");
            for (String param : params) {
                String name = param.split("=")[0];
                String value = param.split("=")[1];
                map.put(name, value);
            }
        }
        return map;
    }
}

Then in any image tag use it like this

Kind regards
David

Tags: Java

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rendering of images stored in the remote path (Jdev 11.4)

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