package com....;import java.io.File;import java.io.IOException;import java.text.SimpleDateFormat;import java.util.Date;import java.util.HashMap;import java.util.Map;import javax.servlet.ServletException;import javax.servlet.http.HttpServletRequest;import javax.servlet.http.HttpServletResponse;import org.apache.commons.io.FileUtils;import org.springframework.beans.factory.annotation.Autowired;import org.springframework.stereotype.Controller;import org.springframework.util.FileCopyUtils;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.multipart.MultipartFile;import org.springframework.web.multipart.MultipartHttpServletRequest;/* * @describe 上传头像文件，上传文件夹需存在 */@Controllerpublic class ThenHeadPortraitController  {                           private final int MAX_SIZE = 1024 * 1024 * 1;   //限制用户头像的最大值为1M    private String[] extendNamesArray = {".jpg",".jpeg"};   //用户头像的扩展名数组，方面验证    private String rootPath;                    //文件根路径    private String p_w_picpathNewPath;        //头像新路径（包含头像名以及扩展名）    private String p_w_picpathOldPath;        //头像在数据库中的原有路径（包含头像名以及扩展名）    private String p_w_picpathNames;          //头像的新名字（时间+用户名），时间精确到毫秒    private String extendName ;         //头像的扩展名，进行扩展名验证，以达到对用户头像的图片类型限制    private String message;                 //用于返回上传头像的信息    private String p_w_picpathURL;                //用于返回用户头像存放的物理路径    private MultipartFile p_w_picpathFile;                       //测试时使用方法     @RequestMapping(value="/then/uploadHeadPortrait.jspx",method= RequestMethod.GET)    public void  upload(HttpServletRequest request,HttpServletResponse response) throws ServletException, IOException    {        request.getRequestDispatcher("../MyJsp.jsp").forward(request,response);        return;    }    @RequestMapping(value="/then/uploadHeadPortrait.jspx",method= RequestMethod.POST)    @ResponseBody    public Map
     
       uploadHeadPortrait(String account,HttpServletRequest request){        String p_w_picpathAccount = account;      //存储用户临时的用户名，以便进行文件的命名        Map
      
        map = new HashMap
       
        ();        MultipartHttpServletRequest multipartRequest = (MultipartHttpServletRequest) request;        //获取上传头像        p_w_picpathFile = multipartRequest.getFile("file");        //获取上传头像的文件名        String fileName = p_w_picpathFile.getOriginalFilename();        System.out.println("OriginalFilename:"+fileName);        //获取文件扩展名        extendName = fileName.substring(fileName.lastIndexOf("."));        //获取上传头像的大小        int p_w_picpathSize = (int) p_w_picpathFile.getSize();        //验证头像的扩展名是否符合要求        if((extendName.equals(extendNamesArray[0])||extendName.equals(extendNamesArray[1]))&&(p_w_picpathSize<=MAX_SIZE)){            rootPath =  request.getSession().getServletContext().getRealPath("//upload");            System.out.println("rootPath:"+rootPath);            p_w_picpathNames = getUploadCurrentTime() + p_w_picpathAccount; //重新命名上传头像名称            System.out.println("p_w_picpathNames:"+p_w_picpathNames);            p_w_picpathNewPath = rootPath+"\\"+p_w_picpathNames+extendName;            System.out.println("p_w_picpathNewPath:"+p_w_picpathNewPath);            //判断新路径是否等于数据库中已存在的路径，不等于，则存储新路径，删除原有头像文件            if(!p_w_picpathNewPath.equals(getDatabaseImageOldPath(p_w_picpathAccount))){                if(getDatabaseImageOldPath(p_w_picpathAccount)!=null&&getDatabaseImageOldPath(p_w_picpathAccount)!=""){                    File file = new File(getDatabaseImageOldPath(p_w_picpathAccount));                    if(p_w_picpathSave(p_w_picpathAccount,p_w_picpathNewPath)){                        if(file.exists()){                            file.delete();                        }                        message = "头像上传成功";                        p_w_picpathURL = p_w_picpathNewPath;                        map.put("message",message);                        map.put("p_w_picpathURL",p_w_picpathURL);                    }else{                        //保存失败                        message = "头像保存失败";                        p_w_picpathURL = null;                        map.put("message",message);                        map.put("p_w_picpathURL",p_w_picpathURL);                                                               }                                                       }                                               }else{                message = "头像上传失败";                p_w_picpathURL = null;                map.put("message",message);                map.put("p_w_picpathURL",p_w_picpathURL);            }                                       }else{      //图像格式不符合或者头像的大小大于1M            message = "头像上传失败，格式或大小不符合";            p_w_picpathURL = null;            map.put("message",message);            map.put("p_w_picpathURL",p_w_picpathURL);        }        return map;    }    //获取头上上传的当前时间    private String getUploadCurrentTime(){        return new SimpleDateFormat("yyyyMMddHHmmssSSS") .format(new Date() );    }    //获取数据库中原有路径，如有则返回路径，否则返回可能为空或“”    private String getDatabaseImageOldPath(String account){        UserDetail userDetatilOldPath=userService.findByUsername(account).getDetail();        p_w_picpathOldPath =  userDetatilOldPath.getAvatar();        return p_w_picpathOldPath;    }    //对原有头像的新路径进行存储，存储后进行检查，时候已经存储，存储成功返回true，失败则返回false    private boolean p_w_picpathSave(String account,String p_w_picpathNewPath){        File uploadFile = new File(p_w_picpathNewPath);        try {            FileCopyUtils.copy(p_w_picpathFile.getBytes(), uploadFile);            FileUtils.copyInputStreamToFile(p_w_picpathFile.getInputStream(), new File(p_w_picpathNewPath));            UserDetail ud=userService.findByUsername(account).getDetail();            ud.setAvatar(p_w_picpathNewPath);     //设置头像新路径            userDetailService.update(ud) ;      //对头像进行数据库更新操作            if(getDatabaseImageOldPath(account)!=null||getDatabaseImageOldPath(account).equals("")){                return true;            }        } catch (IOException e) {            e.printStackTrace();            System.out.println("【上传头像失败...】");            return false;        }        return false;    }    @Autowired    private UserDetailService userDetailService;    @Autowired    private UserService userService;}