You can disable the cffile tag in the ColdFusion Administrator. Also, to access files that are not located on the local ColdFusion system. Allows you to specify a name for the variable in which cffile returns the result (or status) parameters. If you do not specify a value for this attribute, cffile uses the. There were several changes to cffile action=”upload” in ColdFusion 10 on how it handles what file types are allowed. In previous versions, the ACCEPT attribute.
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Consider the security and logical structure of directories on the server before allowing users access to them. You can disable the cffile tag in the ColdFusion Administrator. Also, to access files that are not located on the local ColdFusion system, ColdFusion services must run using an account with permission to access the vffile files and directories.
Create a form that contains file selection fields for upload by the user. The action attribute value specifies the ColdFusion template that processes the submitted form. The enctype attribute value tells the server that the form submission contains an uploaded file. The method attribute is set to cffile to submit a ColdFusion form.
ColdFusion Help | Using cffile
Allow the user to specify the file to upload. The file type instructs the browser to prepare to read and transmit a file from the user system to your server. It automatically includes a Browse button to let the user look for the file instead of manually entering the entire path and filename. ClientFileExt successfully to cffile. Inform the user of the file that was uploaded and its destination. For information on scope variables, see Evaluating the results of a file upload below.
This example performs no error checking and does not incorporate any security measures. Before deploying an application that performs file uploads, ensure that you incorporate both error handling and security. For more information, see Securing Applications and Handling Errors. When you save a file to the server, a file with the same name could exist.
For some applications, you could want to restrict the type of file that is uploaded, for example, to not accept graphic files in a document library. The browser determines the file MIME type. Other browsers and earlier versions might ignore these associations. You can restrict the file types, as demonstrated in the following examples. In UNIX, you can individually set permissions on coldfusoon and directories for each of three types of users’ owner, group, and other.
You use a number for each user type. This number is the sum of the numbers for the individual permissions allowed. For example, use the following code to assign read permissions for everyone:. After a file upload is completed, you can retrieve status information using file upload status variables. This status information includes data about the file, such as its name and the directory where it was saved.
You can access file upload status variables using dot notation, using either file. Although you can use either the File or cffile prefix for file upload status variables, cffile is preferred; for example, cffile.
The File prefix is retained for backward compatibility. File status variables are read only. They are set to the results of the most recent cffile operation. If two cffile tags execute, the results of the first are overwritten by the subsequent cffile operation.
The following table describes the file upload status variables that are available after an upload:. Initial name that ColdFusion uses when attempting to save a file; for example, myfile. Full name of the source file on the client system with the filename extension; for example, myfile. Size of the file that was overwritten in the file upload operation.
Empty if no file was overwritten. You can use the tag to move files from one directory to another, rename files, copy a file, or delete a file. The examples in the following table show static values for many of the attributes. Ensure that you include the trailing slash when you specify the destination directory.
Otherwise, ColdFusion treats the last element in the path as a filename. This rule only applies to copy actions. As a result, you can do the following things:. The file is read into a local variable that you can use coldcusion in the application page. For example, you could read a text file and then insert its contents into a database, or clldfusion could read a text file and then use one of the string replacement functions to modify the contents.
For example, you could create static HTML files or log actions in a text cfvile. The form does not work until you write an action page for it see the next procedure. Uploading files File uploading requires that you create two files: An HTML form to specify file upload information An action page containing the file upload code The following procedures describe how to create these files.
Reviewing the code The following table describes the code and its function: The user can enter a file path or browse the system ccffile select a file to send. Create a ColdFusion page with the following content: This directory must exist on the server. Save the file as uploadfileaction.
The file you specified uploads. Do not enclose the variable in number signs. Resolving conflicting filenames When you save a file to the server, a file with the same name could exist. The file is not saved. The tag does not save the file or return an error.
The name is stored in the file object variables serverFile and serverFileName. You can use this variable to record the name used when the file was saved. The unique name might not resemble the attempted name.
Controlling the type of file uploaded For some applications, you could want to restrict the type of file that is uploaded, for example, to not accept graphic files in a document library.
Windows In Windows, you can set the following file attributes: If you specify any other attributes in addition to Normal, the additional attribute overrides the Normal setting. For example, use the following code to assign read permissions for everyone: The following table describes the file upload status variables that are available after an upload: Variable Description attemptedServerFile Initial name that ColdFusion uses when attempting to save a file; for example, myfile.
As a result, you can do the following things: Generate static HTML documents. Use text files to store information that can be incorporated into web pages.
Read a text file Create a ColdFusion ccoldfusion with the following content: Save the file as readtext. Create a form in to capture data for a text file Create a ColdFusion page with clodfusion following content: Write a text file Create a ColdFusion colfdusion with the following content: Save the file as writetextfileaction.
View the file writetextfileform. The text file is written to the location you specified. If the file exists, it is replaced. Append a text file Open the writetextfileaction.
View the file in the browser, enter values, and submit the form. The appended information displays at the end of the text file. Extension of the source file on the client system without a period; for example, txt not.
Full name of the file saved on the server with the filename extension; for example, myfile.