package?com.imenger.richlink.controller;

import?com.fasterxml.jackson.databind.objectMapper;
import?org.apache.commons.fileupload.FileUploadException;
import?org.apache.commons.fileupload.servlet.ServletFileUpload;
import?org.springframework.stereotype.Controller;
import?org.springframework.web.bind.annotation.RequestMapping;
import?org.springframework.web.bind.annotation.RequestMethod;
import?org.springframework.web.multipart.MultipartFile;
import?org.springframework.web.multipart.MultipartHttpServletRequest;

import?javax.servlet.ServletContext;
import?javax.servlet.ServletException;
import?javax.servlet.ServletOutputStream;
import?javax.servlet.http.HttpServletRequest;
import?javax.servlet.http.HttpServletResponse;
import?java.io.File;
import?java.io.IOException;
import?java.io.PrintWriter;
import?java.text.SimpleDateFormat;
import?java.util.*;

/**
?*?@author?lvyimeng
?*?@version?V1.0
?*?@title:?richlink
?*?@Description:?上傳
?*?@date:?2018/10/9?18:38
?*/
@Controller
public?class?UploadController?{

????private?static?final?objectMapper?objectMapper?=?new?objectMapper（）;
????private?PrintWriter?writer?=?null;

????@RequestMapping（value?=?“fileUpload“?method?=?RequestMethod.POST）
????public?void?fileUpload（MultipartHttpServletRequest?request
???????????????????????????HttpServletResponse?response）?throws?ServletException?IOException
????????????FileUploadException?{
????????ServletContext?application?=?request.getSession（）.getServletContext（）;
????????String?savePath?=?application.getRealPath（“/“）?+?“attached/“;

????????//?文件保存目錄URL
????????String?saveUrl?=?request.getContextPath（）?+?“/attached/“;

????????//?定義允許上傳的文件擴展名
????????HashMap?extMap?=?new?HashMap（）;
????????extMap.put（“image“?“gifjpgjpegpngbmp“）;
????????extMap.put（“flash“?“swfflv“）;
????????extMap.put（“media“?“swfflvmp3wavwmawmvmidavimpgasfrmrmvb“）;
????????extMap.put（“file“?“docdocxxlsxlsxppthtmhtmltxtziprargzbz2“）;

????????//?最大文件大小
????????long?maxSize?=?1000000;

????????response.reset（）;
????????response.setCharacterEncoding（“UTF-8“）;
????????response.setContentType（“text/html“）;
????????writer?=?response.getWriter（）;
????????//?writer.println（json）;??//想辦法把map轉成json

????????if?（!ServletFileUpload.isMultipartContent（request））?{
????????????writer.println（objectMapper.writeValueAsString（getError（“請選擇文件。“）））;
????????????return;

????????}
????????//?檢查目錄
????????File?uploadDir?=?new?File（savePath）;
????????if?（!uploadDir.isDirectory（））?{
????????????writer.println（objectMapper.writeValueAsString（getError（“上傳目錄不存在。“）））;
????????????return;
????????}
????????//?檢查目錄寫權限
????????if?（!uploadDir.canWrite（））?{
????????????writer.println（objectMapper.writeValueAsString（getError（“上傳目錄沒有寫權限。“）））;
????????????return;
????????}

????????String?dirName?=?request.getParameter（“dir“）;
????????if?（dirName?==?null）?{
????????????dirName?=?“image“;