文件controller
https://github.com/hawkroc/SpringMVC-Hibernate-ehcache/blob/master/src/main/java/sy/controller/FileController.java
packagesy.controller;
importjava.io.File;
importjava.io.IOException;
importjava.text.SimpleDateFormat;
importjava.util.ArrayList;
importjava.util.Arrays;
importjava.util.Collections;
importjava.util.Date;
importjava.util.HashMap;
importjava.util.Hashtable;
importjava.util.List;
importjava.util.Map;
importjava.util.UUID;
importjavax.servlet.http.HttpServletRequest;
importjavax.servlet.http.HttpServletResponse;
importjavax.servlet.http.HttpSession;
importorg.apache.commons.fileupload.FileItem;
importorg.apache.commons.fileupload.FileItemFactory;
importorg.apache.commons.fileupload.FileUploadException;
importorg.apache.commons.fileupload.disk.DiskFileItemFactory;
importorg.apache.commons.fileupload.servlet.ServletFileUpload;
importorg.springframework.stereotype.Controller;
importorg.springframework.web.bind.annotation.RequestMapping;
importorg.springframework.web.bind.annotation.ResponseBody;
importsy.comparator.NameComparator;
importsy.comparator.SizeComparator;
importsy.comparator.TypeComparator;
importsy.util.ConfigUtil;
/**
*文件控制器
*
*@author孙宇
*
*/
@Controller
@RequestMapping("/fileController")
publicclassFileControllerextendsBaseController{
/**
*浏览器服务器附件
*
*@paramresponse
*@paramrequest
*@paramsession
*@return
*/
@RequestMapping("/fileManage")
@ResponseBody
publicMap<String,Object>fileManage(HttpServletResponseresponse,HttpServletRequestrequest,HttpSessionsession){
Map<String,Object>m=newHashMap<String,Object>();
//根目录路径，可以指定绝对路径，比如/var/www/attached/
StringrootPath=session.getServletContext().getRealPath("/")+"attached/";
//根目录URL，可以指定绝对路径，比如http://www.yoursite.com/attached/
StringrootUrl=request.getContextPath()+"/attached/";
//图片扩展名
String[]fileTypes=newString[]{"gif","jpg","jpeg","png","bmp"};
StringdirName=request.getParameter("dir");
if(dirName!=null){
if(!Arrays.<String>asList(newString[]{"image","flash","media","file"}).contains(dirName)){
//out.println("InvalidDirectoryname.");
//return;
try{
response.getWriter().write("无效的目录名称！");
}catch(IOExceptione){
e.printStackTrace();
}
returnm;
}
rootPath+=dirName+"/";
rootUrl+=dirName+"/";
FilesaveDirFile=newFile(rootPath);
if(!saveDirFile.exists()){
saveDirFile.mkdirs();
}
}
//根据path参数，设置各路径和URL
Stringpath=request.getParameter("path")!=null?request.getParameter("path"):"";
StringcurrentPath=rootPath+path;
StringcurrentUrl=rootUrl+path;
StringcurrentDirPath=path;
StringmoveupDirPath="";
if(!"".equals(path)){
Stringstr=currentDirPath.substring(0,currentDirPath.length()-1);
moveupDirPath=str.lastIndexOf("/")>=0?str.substring(0,str.lastIndexOf("/")+1):"";
}
//排序形式，nameorsizeortype
Stringorder=request.getParameter("order")!=null?request.getParameter("order").toLowerCase():"name";
//不允许使用..移动到上一级目录
if(path.indexOf("..")>=0){
//out.println("Accessisnotallowed.");
//return;
try{
response.getWriter().write("不允许访问！");
}catch(IOExceptione){
e.printStackTrace();
}
returnm;
}
//最后一个字符不是/
if(!"".equals(path)&&!path.endsWith("/")){
//out.println("Parameterisnotvalid.");
//return;
try{
response.getWriter().write("参数无效！");
}catch(IOExceptione){
e.printStackTrace();
}
returnm;
}
//目录不存在或不是目录
FilecurrentPathFile=newFile(currentPath);
if(!currentPathFile.isDirectory()){
//out.println("Directorydoesnotexist.");
//return;
try{
response.getWriter().write("目录不存在！");
}catch(IOExceptione){
e.printStackTrace();
}
returnm;
}
//遍历目录取的文件信息
List<Hashtable<String,Object>>fileList=newArrayList<Hashtable<String,Object>>();
if(currentPathFile.listFiles()!=null){
for(Filefile:currentPathFile.listFiles()){
Hashtable<String,Object>hash=newHashtable<String,Object>();
StringfileName=file.getName();
if(file.isDirectory()){
hash.put("is_dir",true);
hash.put("has_file",(file.listFiles()!=null));
hash.put("filesize",0L);
hash.put("is_photo",false);
hash.put("filetype","");
}elseif(file.isFile()){
StringfileExt=fileName.substring(fileName.lastIndexOf(".")+1).toLowerCase();
hash.put("is_dir",false);
hash.put("has_file",false);
hash.put("filesize",file.length());
hash.put("is_photo",Arrays.<String>asList(fileTypes).contains(fileExt));
hash.put("filetype",fileExt);
}
hash.put("filename",fileName);
hash.put("datetime",newSimpleDateFormat("yyyy-MM-ddHH:mm:ss").format(file.lastModified()));
fileList.add(hash);
}
}
if("size".equals(order)){
Collections.sort(fileList,newSizeComparator());
}elseif("type".equals(order)){
Collections.sort(fileList,newTypeComparator());
}else{
Collections.sort(fileList,newNameComparator());
}
m.put("moveup_dir_path",moveupDirPath);
m.put("current_dir_path",currentDirPath);
m.put("current_url",currentUrl);
m.put("total_count",fileList.size());
m.put("file_list",fileList);
returnm;
}
/**
*
*@paramresponse
*@paramrequest
*@paramsession
*@return
*/
@RequestMapping("/upload")
@ResponseBody
publicMap<String,Object>upload(HttpServletResponseresponse,HttpServletRequestrequest,HttpSessionsession){
Map<String,Object>m=newHashMap<String,Object>();
m.put("error",1);
m.put("message","上传失败！");
//文件保存目录路径
StringsavePath=session.getServletContext().getRealPath("/")+"attached/";
//文件保存目录URL
StringsaveUrl=request.getContextPath()+"/attached/";
//定义允许上传的文件扩展名
HashMap<String,String>extMap=newHashMap<String,String>();
extMap.put("image",ConfigUtil.get("image"));
extMap.put("flash",ConfigUtil.get("flash"));
extMap.put("media",ConfigUtil.get("media"));
extMap.put("file",ConfigUtil.get("file"));
longmaxSize=Long.parseLong(ConfigUtil.get("maxFileSize"));//允许上传最大文件大小(字节)
if(!ServletFileUpload.isMultipartContent(request)){
m.put("error",1);
m.put("message","请选择文件！");
returnm;
}
//检查目录
FileuploadDir=newFile(savePath);
if(!uploadDir.isDirectory()){
uploadDir.mkdirs();
}
//检查目录写权限
if(!uploadDir.canWrite()){
m.put("error",1);
m.put("message","上传目录没有写权限！");
returnm;
}
StringdirName=request.getParameter("dir");
if(dirName==null){
dirname="image";
}
if(!extMap.containsKey(dirName)){
m.put("error",1);
m.put("message","目录名不正确！");
returnm;
}
//创建文件夹
savePath+=dirName+"/";
saveUrl+=dirName+"/";
FilesaveDirFile=newFile(savePath);
if(!saveDirFile.exists()){
saveDirFile.mkdirs();
}
SimpleDateFormatyearDf=newSimpleDateFormat("yyyy");
SimpleDateFormatmonthDf=newSimpleDateFormat("MM");
SimpleDateFormatdateDf=newSimpleDateFormat("dd");
Datedate=newDate();
Stringymd=yearDf.format(date)+"/"+monthDf.format(date)+"/"+dateDf.format(date)+"/";
savePath+=ymd;
saveUrl+=ymd;
FiledirFile=newFile(savePath);
if(!dirFile.exists()){
dirFile.mkdirs();
}
if(ServletFileUpload.isMultipartContent(request)){//判断表单是否存在enctype="multipart/form-data"
FileItemFactoryfactory=newDiskFileItemFactory();
ServletFileUploadupload=newServletFileUpload(factory);
upload.setHeaderEncoding("UTF-8");
try{
List<FileItem>items=upload.parseRequest(request);
for(FileItemitem:items){
StringfileName=item.getName();
if(!item.isFormField()){
//检查文件大小
if(item.getSize()>maxSize){
m.put("error",1);
m.put("message","上传文件大小超过限制！(允许最大["+maxSize+"]字节，您上传了["+item.getSize()+"]字节)");
returnm;
}
//检查扩展名
StringfileExt=fileName.substring(fileName.lastIndexOf(".")+1).toLowerCase();
if(!Arrays.<String>asList(extMap.get(dirName).split(",")).contains(fileExt)){
m.put("error",1);
m.put("message","上传文件扩展名是不允许的扩展名。\n只允许"+extMap.get(dirName)+"格式！");
returnm;
}
StringnewFileName=UUID.randomUUID().toString()+"."+fileExt;
try{
FileuploadedFile=newFile(savePath,newFileName);
item.write(uploadedFile);
}catch(Exceptione){
m.put("error",1);
m.put("message","上传文件失败！");
returnm;
}
m.put("error",0);
m.put("url",saveUrl+newFileName);
}
}
}catch(FileUploadExceptione){
e.printStackTrace();
}
}
returnm;
}
}
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