package com.wkrj.business.ntpd.until;

import java.io.File;
import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.Date;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

import javax.servlet.http.HttpServletRequest;

import org.springframework.util.FileCopyUtils;
import org.springframework.web.multipart.MultipartFile;
import org.springframework.web.multipart.MultipartHttpServletRequest;

public class imgUploadUntil {
	
	public static List<Map<String, String>> lkh_uploadFile(HttpServletRequest request,String dirname){
		ArrayList<Map<String, String>> newlist=new ArrayList<Map<String,String>>();
		//檔案上傳
		MultipartHttpServletRequest multipartRequest=(MultipartHttpServletRequest) request;
		try {
			multipartRequest.setCharacterEncoding("UTF-8");
		//檔案路徑
		String path = dirname;
		String realPath = multipartRequest.getSession().getServletContext().getRealPath("/") + "/" + path;
		File file = new File(realPath);
		if (!file.exists()) {//建立目錄
			file.mkdirs();
		}			
		String fileName = "";
		Map<String, MultipartFile> fileMap = multipartRequest.getFileMap();
		for (Map.Entry<String, MultipartFile> entity : fileMap.entrySet()) {
			String fileComponentName=entity.getKey();//獲取元件名
			List<MultipartFile> list2 = multipartRequest.getFiles(fileComponentName);
			for (MultipartFile mf : list2) {				
				fileName = mf.getOriginalFilename();// 獲取檔名
				if(fileName==null||"".equals(fileName)||""==fileName){//空檔案，直接返回
					return null;
				}
				String onlyfileName=fileName.substring(0,fileName.lastIndexOf("."));//只取名字，去掉副檔名
				String extend = fileName.substring(fileName.lastIndexOf(".")+1);// 獲取副檔名
				long noextfilename= System.currentTimeMillis();//獲取時間戳 這種速度更快一些
				String extra = "wkrj";//由於樣式不能是數字所以加上wkrj來區分;			
				String myfilename=extra+noextfilename+"."+extend;//自定義檔名稱
				//檔案全路徑
				String savePath = realPath + myfilename;// 檔案儲存全路徑				
				String fileurl=path+myfilename;
								
				File savefile = new File(savePath);
				// 檔案拷貝到指定硬碟目錄
				FileCopyUtils.copy(mf.getBytes(), savefile);
				HashMap<String, String> map=new HashMap<String,String>();
				map.put("fileextend", extend);//副檔名
				map.put("fileurl", fileurl);//檔案相對路徑
				map.put("filename", onlyfileName);//檔名	
				map.put("fileComponentName", fileComponentName);//前臺檔案元件的name值
				newlist.add(map);				
			}			
		}		
		} catch (Exception e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}

		return newlist;
				
	}	

}