Java File class learning notes 2: File class objects and common operation methods, file learning notes
1. File, relative path, and absolute path
1. File(1) standard files: such as images and music files.(2) directory file: a folde
Blog from: http://blog.csdn.net/amosryan/article/details/6568783
Function directory: Convert input stream to byte stream read the file as a string to specify the encoding format to place the input stream into a list
Source:[Java] View Plain copy print? packageamosryan.utility.file; importjava.io.bufferedreader; importjava.io.bytearrayoutputstream; importjava.io.file; import java.io.fileinputstream; importjava.io.fileoutputstream; import java.io.file
Sometimes, to hide the truth, we define the file as a header and then download the readfile, but this will increase the burden on the server. Generally, we do not recommend downloading large files.
Sometimes, to hide the truth, we define the file as a header and then download the readfile, but this will increase the burden on the server. Generally, we do not recommend downloading large files.
The Cod
PHPheader sends various types of files and sets the file download name lt ;? Phpheader (Content-type: applicationimagepjpeg); output type header (Content-Disposition: attachment=filenamedownloaded.jpg); download display name; PHP header sends various types of files and sets the file download name
Header ('content-type: application/image/pjpeg '); // output typeHeader ('content-Disposition: attachment;
Sometimes, to hide the truth, we define the file as a header and then download the readfile, but this will increase the burden on the server. generally, we do not recommend downloading large files.
The code is as follows:
Function sendFile ($ fileName, $ fancyName = '', $ forceDownload = true, $ speedLimit = 0, $ contentType = ''){If (! Is_readable ($ fileName )){Header ("HTTP/1.1 404 Not Found ");Return false;}$ FileStat = stat ($ fileName );$ La
Sometimes in order to hide the real download address, we defined the header as a file and then readfile the download, but this will increase the burden on the server, generally do not recommend download a large number of files The code is as follows: ; nbsp; nbsp; nbsp; attached server response HTTP type contenttype Daquan: ". *" = "application/ Octet-stream "". 001 "=" application/x-001 "". "=" application/x-301 "". 323 "=" text/h323 "". 906 "=" ap
This article tags: getting started with Linux Linux system Linux file system Linux Linux Common command internet TalkLinux system information is stored in a file, and the file is similar to ordinary official documents. Each file has its own name, content, storage address, and other administrative info
function Judgepararegular (IntID)
If intidJudgepararegular=intid
Else
Response.Write "Input Error!" "
Response.End
End If
End Function
Intfilesize=judgepararegular (Request.QueryString ("Intfilesize"))
Strpath=request.querystring ("strpath")
If InStr (strpath, ":") =0 then Strpath=server. MapPath (strpath)
%>
function Deletefiles (path)
On Error Resume Next
Set fs=server.createobject ("Scripting.FileSystemObject")
If Fs. FileExists (PATH) Then
Fs. DeleteFile Path,true
Response.Write "Successfull
PHP header send various types of files and settings file download name
Header (' content-type:application/image/pjpeg ');//type of outputHeader (' content-disposition:attachment; filename= ' downloaded.jpg '); Download the displayed name, note the formatReadFile (' my.jpg ');and send this file with the type output of the message set by the previous header, which will pop up a download boxis to downlo
Copy CodeThe code is as follows:
$filename = ' path + actual filename ';Types of filesHeader (' content-type:application/pdf ');Download the displayed nameHeader (' content-disposition:attachment; filename= ' file name when saving. pdf "');ReadFile ("$filename");Exit ();?>
Here are the methods commonly used online
Copy the Code code as follows:
if (Isset ($link)){Header ("http/1.1 303 See other");Header ("Location: $link");Exit}
$link is the act
PHP header send various types of files and settings file download name
Header (' content-type:application/image/pjpeg ');//type of output
Header (' content-disposition:attachment; filename= ' downloaded.jpg '); Download the displayed name, note the formatReadFile (' my.jpg ');and send this file with the type output of the message set by the previous header, which will pop up a download boxis to downl
Document directory
Header ('content-type: Application/image/pjpeg '); // output typeHeader ('content-Disposition: attachment; filename = "downloaded.jpg" '); // download the name displayed. Note the format.Readfile('my.jpg ');// Set the type of the file header to be sent, and a download box will pop up.// Download the my.jpg file on the server. The downloaded display and saved name are downloaded.jpg
Copy Code code as follows:
$filename = ' path + actual filename ';
Type of File
Header (' content-type:application/pdf ');
Download the displayed name
Header (' content-disposition:attachment filename= file name when saved; PDF ');
ReadFile ("$filename");
Exit ();
?>
Here are the methods commonly used on the internet
Copy Code code as follows:
if (Isset ($link)
: Excluding private keys, binary
Format: PKCS7Extension:. p7b/.p7rDescription: "PKCS #7" cryptographic Information Syntax standard
Features: 1, p7b with a tree-like display certificate chain, excluding the private key2, p7r for the CA to the certificate request signature of the reply, only for import
Format: CMSExtension:. p7c/.p7m/.p7sDescription: "Cryptographic message Syntax"Features: 1, p7c only save the certificate2, p7m:signature with enveloped data3.
. H header files are required for compilation, Lib is required for linking, and DLL is required for running.
The dependency. Lib is not. dll. If DLL is generated, the Lib file is also generated. If you want to completeSource codeCompilation and link. It is enough to have a header file and Lib. If dynamic connection is also enabledProgramIt is enough to run a DLL. In the development and debugging stages, i
PHP Learning Basics-File System (i) file processing, file permissions
First, the PHP system file processing
/* PHP File System processing * All file processing is done using system functions. * is based on LINUX/UNIX system for
PHP File Upload problem Summary (file size detection, large file upload processing),
Due to both local and server security issues, page file uploads based on input type= "file" have been in a very awkward position. On the one hand, users do not want privacy disclosure, so t
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