com.cami.web.controller.uploadController.java Source code

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Here is the source code for com.cami.web.controller.uploadController.java

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package com.cami.web.controller;

import com.cami.web.form.UploadedFile;
import java.io.IOException;
import java.util.Calendar;
import java.util.Iterator;
import java.util.List;
import javax.servlet.ServletContext;
import javax.servlet.http.HttpServletResponse;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.ui.ModelMap;
import org.springframework.util.FileCopyUtils;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.ResponseBody;
import org.springframework.web.context.request.WebRequest;
import org.springframework.web.multipart.MultipartFile;
import org.springframework.web.multipart.MultipartHttpServletRequest;

/**
 *
 * @author gervais
 */
@Controller
@RequestMapping("/upload")
public class uploadController {

    UploadedFile ufile;

    @Autowired
    ServletContext servletContext;

    public uploadController() {
        System.out.println("init upload Controller");
        ufile = new UploadedFile();
    }

    @RequestMapping(value = "/", method = RequestMethod.GET)
    public String indexAction(final ModelMap model, final WebRequest webRequest) {

        System.out.println("HomeController");
        return "hello";
    }

    @RequestMapping(value = "/get/{value}", method = RequestMethod.GET)
    public void get(HttpServletResponse response, @PathVariable String value) {
        try {

            response.setContentType(ufile.type);
            response.setContentLength(ufile.length);
            FileCopyUtils.copy(ufile.bytes, response.getOutputStream());

        } catch (IOException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
    }

    @RequestMapping(value = "/upload", method = RequestMethod.POST)
    public @ResponseBody String upload(MultipartHttpServletRequest request, HttpServletResponse response) {

        //0. notice, we have used MultipartHttpServletRequest

        //1. get the files from the request object
        Iterator<String> itr = request.getFileNames();

        MultipartFile mpf = request.getFile(itr.next());
        System.out.println(mpf.getOriginalFilename() + " uploaded!");

        try {
            //just temporary save file info into ufile
            ufile.length = mpf.getBytes().length;
            ufile.bytes = mpf.getBytes();
            ufile.type = mpf.getContentType();
            ufile.name = mpf.getOriginalFilename();

        } catch (IOException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }

        //2. send it back to the client as <img> that calls get method
        //we are using getTimeInMillis to avoid server cached image 

        return "<img src='" + request.getContextPath() + "/upload/get/" + Calendar.getInstance().getTimeInMillis()
                + "' />";

    }
}