uploadANDdowload
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1. 把图片写入硬盘
// 获取线路code
code = util.getCircuitryCode(orgCode, po.getStartplace(),po.getTargetplace(), String.valueOf(po.getTraveldays()));
//工程类路径,用来获取保存头像的路径
String url = request.getSession().getServletContext()
.getRealPath(request.getRequestURI());
int a = url.lastIndexOf(File.separator);
url = url.substring(0, a);
StringBuffer dirPath =new StringBuffer(url).append(
File.separator).append("picture");
filePath = fileItem.getName();
if (filePath !=null && !"".equalsIgnoreCase(filePath)) {
//创建文件夹
createdir[微软用户1] (code, dirPath);
TAttachment ta =new TAttachment();
//获取图片或文件的名字
fileName = filePath.substring(filePath.lastIndexOf("\\") + 1);
//循环图片名字判断是否有重复的
for (int i = 0; i < pathnameList.size(); i++) {
String beforFileName = (String) pathnameList.get(i);
if (beforFileName.equals(fileName)) {
fileName ="little"+ i+ filePath.substring(filePath.lastIndexOf("\\") + 1);
}
}
dirPath.append("/");
outPath = dirPath.toString() + fileName;
//写入文件
if (!"".equals(filePath)) {
ins = fileItem.getInputStream();
os = new FileOutputStream(outPath);
bytesRead = 0;
buffer =newbyte[4096];
while ((bytesRead = ins.read(buffer, 0, 4096)) != -1) {
os.write(buffer, 0, bytesRead);
}
buffer =null;
os.close();
ins.close();
}
fileSize = fileItem.getSize();
//把图片名字添加到list中，以便判断是否有相同的图片名字
pathnameList.add(fileName);
extend1 = fileName.substring(fileName.lastIndexOf(".") + 1);
byte[] bytes =newbyte[12];
ta.setName(fileName);
ta.setContexts(bytes);
ta.setCreatetime(new Date());
ta.setCreatorid(creatorid);
ta.setCreatororgid(creatororgid);
ta.setCreatorip(ip);
ta.setExtend(extend1);
ta.setFilepath("/picture/circuitryPictrue/" + code
+ "/" + fileName);
2. 复制
code = util.getCircuitryCode(orgCode, po.getStartplace(),po.getTargetplace(), String.valueOf(po.getTraveldays()));
//工程类路径,用来获取保存头像的路径
String url = request.getSession().getServletContext().getRealPath(request.getRequestURI());
int a = url.lastIndexOf(File.separator);
url = url.substring(0, a);
StringBuffer dirPaths =new StringBuffer(url);//用来删除文件用的
StringBuffer dirPath =new StringBuffer(url).append(File.separator).append("picture");
String fileid = fileItem.getFieldName();//用来获取浏览文本框的ID
filePath = fileItem.getName();
//获取图片或文件的名字
fileName = filePath.substring(filePath.lastIndexOf("\\") + 1);
if (fileid.equals("haveBigPic")) {
if (filePath ==null || filePath.equals("")) {
type = "BIGPIC";
attachement =logic.getAttachment(relationId, type);
//调用复制的方法
filePath =copyPicture[微软用户2] (code, ip, filePath,creatororgid, creatorid, set_ta, tattBig,attachement, dirPaths, dirPath);
3. 修改TAttachment ta =null;
//工程类路径,用来获取保存头像的路径
String url = request.getSession().getServletContext()
.getRealPath(request.getRequestURI());
int a = url.lastIndexOf(File.separator);
url = url.substring(0, a);
StringBuffer dirPath =new StringBuffer(url).append(
File.separator).append("picture");
StringBuffer dirPaths =new StringBuffer(url);//此字符串用来删除文件夹的
String fileid = fileItem.getFieldName();//用来获取浏览文本框的ID
filePath = fileItem.getName();
if (filePath !=null && !"".equalsIgnoreCase(filePath)) {
//创建文件夹
createdir(code, dirPath);
fileName = filePath.substring(filePath
.lastIndexOf("\\") + 1);
//调用处理图片同名的方法
fileName = picrename[微软用户3] (code, filePath, fileName, po,
pathnameList, dirPaths, fileid);
dirPath.append("/");
outPath = dirPath.toString() + fileName;
//写入文件说
if (!"".equals(filePath)) {
ins = fileItem.getInputStream();
os = new FileOutputStream(outPath);
bytesRead = 0;
buffer =newbyte[4096];
while ((bytesRead = ins.read(buffer, 0, 4096)) != -1) {
os.write(buffer, 0, bytesRead);
}
buffer =null;
os.close();
ins.close();
}
fileSize = fileItem.getSize();
pathnameList.add(fileName);//把filename存入list，用来判断图片重名
extend1 = fileName
.substring(fileName.lastIndexOf(".") + 1);
byte[] bytes =newbyte[12];
Set ts = po.getTAttachments();
Iterator it = ts.iterator();
boolean flag =false;
if ("haveBigPic".equalsIgnoreCase(fileItem
.getFieldName())) {
while (it.hasNext()) {
ta = (TAttachment) it.next();
if (Constants.C_ATTACHMENT_TYPE_BIG
.equalsIgnoreCase(ta.getType())) {
flag = true;
break;
}
}
} elseif ("haveLittlePic".equalsIgnoreCase(fileItem
.getFieldName())) {
while (it.hasNext()) {
ta = (TAttachment) it.next();
if (Constants.C_ATTACHMENT_TYPE_SMALL.equalsIgnoreCase(ta.getType())) {
flag =true;
break;
}
}
} elseif ("haveWordFile".equalsIgnoreCase(fileItem
.getFieldName())) {
while (it.hasNext()) {
ta = (TAttachment) it.next();
if (Constants.C_ATTACHMENT_TYPE_DOC
.equalsIgnoreCase(ta.getType())) {
flag = true;
break;
}
}
}
if (flag) {
if (Constants.C_ATTACHMENT_TYPE_BIG
.equalsIgnoreCase(ta.getType())) {
if ("bmp".equalsIgnoreCase(extend1)
||"gif".equalsIgnoreCase(extend1)
|| "jpg".equalsIgnoreCase(extend1)
|| "jpeg".equalsIgnoreCase(extend1)
|| "tiff".equalsIgnoreCase(extend1)
|| "psd".equalsIgnoreCase(extend1)
|| "png".equalsIgnoreCase(extend1)
|| "swf".equalsIgnoreCase(extend1)) {
ta.setKind(Constants.C_ATTACHMENT_KIND_PHO);
ta.setType(Constants.C_ATTACHMENT_TYPE_BIG);
} else {
thrownew BusinessException("请上传正确的格式图片");
}
} elseif (Constants.C_ATTACHMENT_TYPE_SMALL
.equalsIgnoreCase(ta.getType())) {
if ("jpg".equalsIgnoreCase(extend1)) {
ta.setKind(Constants.C_ATTACHMENT_KIND_PHO);
ta
.setType(Constants.C_ATTACHMENT_TYPE_SMALL);
} else {
thrownew BusinessException("请上传JPG格式图片");
}
} elseif (Constants.C_ATTACHMENT_TYPE_DOC
.equalsIgnoreCase(ta.getType())) {
if ("doc".equalsIgnoreCase(extend1)
||"pdf".equalsIgnoreCase(extend1)
|| "xls".equalsIgnoreCase(extend1)) {
ta.setKind(Constants.C_ATTACHMENT_KIND_DOC);
ta.setType(Constants.C_ATTACHMENT_TYPE_DOC);
} else {
thrownew BusinessException(
"请上传WORD文档或PDF文件");
}
}
ta.setContexts(bytes);
ta.setName(fileName);
ta.setContexts(bytes);
ta.setCreatetime(new Date());
ta.setCreatorid(changerid);
ta.setCreatororgid(changerorgid);
ta.setCreatorip(ip);
ta.setExtend(extend1);
ta.setFilepath("/picture/circuitryPictrue/" + code
+ "/" + fileName);
ta.setFilesize(String.valueOf(fileSize));
set.add(ta);
3. 读取到界面
//把图片读入页面
public ActionForward readpic(ActionMapping mapping, ActionForm form,
HttpServletRequest request, HttpServletResponse response)
throws Exception {
File uploadFile = null;
try {
String id = request.getParameter("id");
TAttachment t = (TAttachment)logic.getDao().getHibernateTemplate()
.get(TAttachment.class, id);
//获取取数据库中的filepath路径
String bytes = t.getFilepath();
//工程类路径,用来获取保存头像的路径
String url = request.getSession().getServletContext().getRealPath(
request.getRequestURI());
int a = url.lastIndexOf(File.separator);
url = url.substring(0, a);
BufferedInputStream bis =null;
BufferedOutputStream bos =null;
OutputStream fos = null;
InputStream fis = null;
String filepath = bytes;
uploadFile = new File(url + filepath);
fis = new FileInputStream(uploadFile);
bis = new BufferedInputStream(fis);
fos = response.getOutputStream();
bos = new BufferedOutputStream(fos);
//这个就就是弹出下载对话框的关键代码
// response.setHeader("Content-disposition", "attachment;filename="
// + URLEncoder.encode(bytes, "utf-8"));
int bytesRead = 0;
//用输入流进行先读，然后用输出流去写
byte[] buffer =newbyte[8192];
while ((bytesRead = bis.read(buffer, 0, 8192)) != -1) {
bos.write(buffer, 0, bytesRead);
}
bos.flush();
fis.close();
bis.close();
fos.close();
bos.close();
} catch (Exception ex) {
return mapping.findForward("error");
}
returnnull;
4. }
5下载附件，如word，pdf等等
public ActionForward download(ActionMapping mapping, ActionForm form,
HttpServletRequest request, HttpServletResponse response)
throws Exception {
byte[] buffer;
InputStream ins;
String id = "", dirPaths, filepath;
try {
//工程类路径,用来获取保存头像的路径
String url = request.getSession().getServletContext().getRealPath(
request.getRequestURI());
int a = url.lastIndexOf(File.separator);
url = url.substring(0, a);
id = request.getParameter("id");
TAttachment ta = (TAttachment)logic.load(TAttachment.class, id);
filepath = ta.getFilepath();
dirPaths = url + filepath;
//读取文件
if (!"".equals(dirPaths)) {
ins = new FileInputStream(dirPaths);
int bytesRead = 0;
buffer = newbyte[4096];
response.setContentType("application/x-msdownload");
response.setHeader("Content-Disposition","attachment;"
+ " filename="
+ new String(ta.getName().getBytes(),"ISO-8859-1"));
while ((bytesRead = ins.read(buffer, 0, 4096)) != -1) {
logic.write(response.getOutputStream(), buffer);
}
buffer = null;
ins.close();
}
} catch (Exception ex) {
request.setAttribute(Constants.C_ERROR_MSG,"文件下载出现错误");
return mapping.findForward("error");
}
returnnull;
}
6．Byte转换为输入流
// 获取没有存入到硬盘的图片，然后把图片添加到硬盘
public ActionForward movePitureToDir(ActionMapping mapping,
ActionForm form, HttpServletRequest request,
HttpServletResponse response)throws Exception {
String outPath = "", fileName;
byte[] buffer =null;
OutputStream os = null;
byte[] bytes =newbyte[12];
byte[] bytes1;
Map map = new HashMap();
//工程类路径,用来获取保存图片的路径
String url = request.getSession().getServletContext().getRealPath(request.getRequestURI());
int a = url.lastIndexOf(File.separator);
url = url.substring(0, a);
StringBuffer dirPath = new StringBuffer(url).append(File.separator).append("picture");
//查找附件信息
List list = logic.getAttamentsByfilePath("/picture/circuitryPictrue");
if (list !=null) {
//创建文件夹picture
File fpath = new File(dirPath.toString());
if (!fpath.exists()) {
fpath.mkdir();
}
//创建用户照片文件夹
dirPath.append("/").append("circuitryPictrue");
fpath = new File(dirPath.toString());
if (!fpath.exists()) {
fpath.mkdir();
}
dirPath.append("/");
for (int i = 0; i < list.size(); i++) {
map = (Map) list.get(i);
String id = map.get("id").toString();
TAttachment attaches =logic.getAttachment(id);
TCircuitry tc = (TCircuitry)logic.getDao().getHibernateTemplate().get(TCircuitry.class,attaches.getRelationid());
if (tc !=null) {
StringBuffer strbf =new StringBuffer(dirPath);
//创建某条线路的图片文件夹
strbf.append(tc.getCode());
fpath = new File(strbf.toString());
//如果用户文件夹不存在，则创建用户文件夹
if (!fpath.exists()) {
fpath.mkdir();
}
//获取图片的名字
fileName = attaches.getName();
strbf.append("/");
outPath = strbf.toString() + fileName;
if (!"".equals(attaches.getFilepath()) && attaches.getFilepath()!=null && !"".equals(attaches.getContexts()) && attaches.getContexts()!=null) {
bytes1 = attaches.getContexts();
//把字节转换为输入流
ByteArrayInputStream bis =new ByteArrayInputStream(bytes1);
os = new FileOutputStream(outPath);
buffer = newbyte[4096];
int len = 0;
while ((len = bis.read(buffer)) != -1) {
os.write(buffer, 0, len);
}
buffer = null;
bis.close();
os.close();
attaches.setFilepath("/picture/circuitryPictrue/"+ tc.getCode() +"/" + fileName);
attaches.setContexts(bytes);
logic.update(attaches);
}
} else {
logic.deleteAttachmentById(id);
}
}
}
returnthis.init(mapping, form, request, response);
}
7.删除文件夹中的文件
/**
*根据用户id查找图片，把没有存入磁盘的数据存入磁盘
*
*@parammapping
*@paramform
*@paramrequest
*@paramresponse
*@return
*@throwsException
*/
public ActionForward findPicture(ActionMapping mapping, ActionForm form,
HttpServletRequest request, HttpServletResponse response)
throws Exception {
String outPath = "", fileName;
byte[] buffer =null;
OutputStream os = null;
byte[] bytes =newbyte[12];
byte[] bytes1;
//工程类路径,用来获取保存头像的路径
String url = request.getSession().getServletContext().getRealPath(
request.getRequestURI());
int a = url.lastIndexOf(File.separator);
url = url.substring(0, a);
StringBuffer dirPath = new StringBuffer(url).append(File.separator)
.append("picture");
UserBusIface service = (UserBusIface)this.getObject();
List list = service.getUnloadAttachement(FileTypeEnum.USERPIC,
"/picture/userPhoto");
if (list !=null) {
//创建文件夹picture
File fpath = new File(dirPath.toString());
if (!fpath.exists()) {
fpath.mkdir();
}
//创建用户照片文件夹
dirPath.append("/").append("userPhoto");
fpath =new File(dirPath.toString());
if (!fpath.exists()) {
fpath.mkdir();
}
dirPath.append("/");
for (int i = 0; i < list.size(); i++) {
AttachmentPO attache = (AttachmentPO) list.get(i);
UserVO userpo = service.gainUserById(attache.getRelationId());
if (userpo !=null) {
StringBuffer strbf =new StringBuffer(dirPath);
//创建某个用户的图片文件夹
strbf.append(userpo.getCode());
fpath =new File(strbf.toString());
//如果用户文件夹不存在，则创建用户文件夹
if (!fpath.exists()) {
fpath.mkdir();
} else {
//调用删除文件夹及文件夹的内容方法
deleteAll[微软用户4] (fpath);
fpath.mkdir();
}
// 获取图片的名字
fileName = attache.getName();
strbf.append("/");
outPath = strbf.toString() + fileName;
if (!"".equals(attache.getFilePath()) && attache.getFilePath()!=null && !"".equals(attache.getContexts()) && attache.getContexts()!=null) {
bytes1 = attache.getContexts();
ByteArrayInputStream bis =new ByteArrayInputStream(bytes1);
os = new FileOutputStream(outPath);
buffer = newbyte[4096];
int len = 0;
while ((len = bis.read(buffer)) != -1) {
os.write(buffer, 0, len);
}
buffer = null;
bis.close();
os.close();
attache.setFilePath("/picture/userPhoto/"
+ userpo.getCode() +"/" + fileName);
attache.setContexts(bytes);
service.update(attache);
}
}
}
}
returnthis.manageUserinfoPage(mapping, form, request, response);
}
[微软用户1] //创建文件夹
privatevoidcreatedir(String code, StringBuffer dirPath) {
//创建文件夹picture
File fpath = new File(dirPath.toString());
if (!fpath.exists()) {
fpath.mkdir();
}
//创建用户照片文件夹
dirPath.append("/").append("circuitryPictrue");
fpath = new File(dirPath.toString());
if (!fpath.exists()) {
fpath.mkdir();
}
//创建某个用户的图片文件夹
dirPath.append("/").append(code);
fpath = new File(dirPath.toString());
if (!fpath.exists()) {
fpath.mkdir();
}
}
[微软用户2] //复制的方法
private StringcopyPicture(String code, String ip, String filePath,
String creatororgid, String creatorid, Set set_ta,
TAttachment tattBig, List attachement, StringBuffer dirPaths,
StringBuffer dirPath)throws FileNotFoundException, IOException {
String fileName;
String outPath;
int bytesRead;
byte[] buffer;
InputStream ins;
OutputStream os;
if (attachement !=null && attachement.size() > 0) {
//创建文件夹
createdir(code, dirPath);
TAttachment tatt = (TAttachment) attachement.get(0);
filePath = tatt.getFilepath();
//获取图片路径和文件的名字
fileName = filePath.substring(filePath.lastIndexOf("\\") + 1);
int b = fileName.lastIndexOf("/") + 1;
fileName = fileName.substring(b);
dirPath.append("/");
outPath = dirPath.toString() + fileName;
//写入文件
if (!"".equals(filePath)) {
ins = new FileInputStream(dirPaths + filePath);
os = new FileOutputStream(outPath);
bytesRead = 0;
buffer = newbyte[4096];
while ((bytesRead = ins.read(buffer, 0, 4096)) != -1) {
os.write(buffer, 0, bytesRead);
}
buffer = null;
os.close();
ins.close();
}
tattBig.setContexts(tatt.getContexts());
tattBig.setCreatetime(new Date());
tattBig.setCreatorid(creatorid);
tattBig.setCreatorip(ip);
tattBig.setCreatororgid(creatororgid);
tattBig.setExtend(tatt.getExtend());
tattBig.setFilepath("/picture/circuitryPictrue/" + code +"/"+ fileName);
tattBig.setFilesize(tatt.getFilesize());
tattBig.setKind(tatt.getKind());
tattBig.setName(tatt.getName());
tattBig.setType(tatt.getType());
set_ta.add(tattBig);
}
return filePath;
}
[微软用户3] //处理同名的图片方法
private Stringpicrename(String code, String filePath, String fileName,
TCircuitry po, List pathnameList, StringBuffer dirPaths,
String fileid) throws SysException {
File fpaths;
List attachetype;
TAttachment tat;
//把传过来的图片路径字段查询附件，看是否存在相同的图片，如果有相同的，则添加到pathnameList中
String filena = "/picture/circuitryPictrue/" + code + "/" + fileName;
List listpic = logic.getAttachmentbyId(po.getId(), filena);
if (listpic !=null && listpic.size() > 0) {
TAttachment tatt = (TAttachment) listpic.get(0);
String filep = tatt.getFilepath();
int b = filep.lastIndexOf("/") + 1;
filep = filep.substring(b);
pathnameList.add(filep);
}
//循环pathnameList判断是否有重名的图片
if (pathnameList !=null && pathnameList.size() > 0) {
for (int i = 0; i < pathnameList.size(); i++) {
String beforFileName = (String) pathnameList.get(i);
if (fileid.equals("haveBigPic")
&& beforFileName.equals(fileName)) {
fileName = "big"+ i+ 1+ filePath
.substring(filePath.lastIndexOf("\\") + 1);
attachetype = logic.getAttachment(po.getId(), "BIGPIC");
if (attachetype !=null && attachetype.size() > 0) {
tat = (TAttachment) attachetype.get(0);
//删除图片磁盘原来的大图片
dirPaths = dirPaths.append(tat.getFilepath());
fpaths = new File(dirPaths.toString());
if (fpaths.exists()) {
fpaths.delete();
}
}
}
if (fileid.equals("haveLittlePic")
&& beforFileName.equals(fileName)) {
fileName = "little"
+ i
+ 1
+ filePath
.substring(filePath.lastIndexOf("\\") + 1);
attachetype = logic.getAttachment(po.getId(), "LITTLEPIC");
if (attachetype !=null && attachetype.size() > 0) {
tat = (TAttachment) attachetype.get(0);
//删除磁盘原来的小图片
dirPaths = dirPaths.append(tat.getFilepath());
fpaths = new File(dirPaths.toString());
if (fpaths.exists()) {
fpaths.delete();
}
}
}
else {
if (fileid.equals("haveBigPic")) {
attachetype =logic.getAttachment(po.getId(),"BIGPIC");
if (attachetype !=null && attachetype.size() > 0) {
tat = (TAttachment) attachetype.get(0);
//删除图片
dirPaths = dirPaths.append(tat.getFilepath());
fpaths =new File(dirPaths.toString());
if (fpaths.exists()) {
fpaths.delete();
}
}
}
if (fileid.equals("haveLittlePic")) {
attachetype =logic.getAttachment(po.getId(),
"LITTLEPIC");
if (attachetype !=null && attachetype.size() > 0) {
tat = (TAttachment) attachetype.get(0);
//删除图片
dirPaths = dirPaths.append(tat.getFilepath());
fpaths =new File(dirPaths.toString());
if (fpaths.exists()) {
fpaths.delete();
}
}
}
if (fileid.equals("haveWordFile")) {
attachetype =logic.getAttachment(po.getId(),"WORD");
if (attachetype !=null && attachetype.size() > 0) {
tat = (TAttachment) attachetype.get(0);
//删除图片
dirPaths = dirPaths.append(tat.getFilepath());
fpaths =new File(dirPaths.toString());
if (fpaths.exists()) {
fpaths.delete();
}
}
}
}
}
} else {
if (fileid.equals("haveBigPic")) {
attachetype = logic.getAttachment(po.getId(), "BIGPIC");
if (attachetype !=null && attachetype.size() > 0) {
tat = (TAttachment) attachetype.get(0);
//删除图片
dirPaths = dirPaths.append(tat.getFilepath());
fpaths = new File(dirPaths.toString());
if (fpaths.exists()) {
fpaths.delete();
}
}
}
if (fileid.equals("haveLittlePic")) {
attachetype = logic.getAttachment(po.getId(), "LITTLEPIC");
if (attachetype !=null && attachetype.size() > 0) {
tat = (TAttachment) attachetype.get(0);
//删除图片
dirPaths = dirPaths.append(tat.getFilepath());
fpaths = new File(dirPaths.toString());
if (fpaths.exists()) {
fpaths.delete();
}
}
}
if (fileid.equals("haveWordFile")) {
attachetype = logic.getAttachment(po.getId(), "WORD");
if (attachetype !=null && attachetype.size() > 0) {
tat = (TAttachment) attachetype.get(0);
//删除图片
dirPaths = dirPaths.append(tat.getFilepath());
fpaths = new File(dirPaths.toString());
if (fpaths.exists()) {
fpaths.delete();
}
}
}
}
return fileName;
}
[微软用户4] /**
*删除硬盘中文件夹中的方法
*
*@paramf
*/
publicstaticvoiddeleteAll(File f) {
if (f.isFile()) {
f.delete();
} else {
//获得当前文件夹下的所有子文件和子文件夹
File f1[] = f.listFiles();
//循环处理每个对象
int len = f1.length;
for (int i = 0; i < len; i++) {
//递归调用，处理每个文件对象
deleteAll(f1[i]);
}
//删除当前文件夹
f.delete();
}
}
