net.hasor.web

接口 FileItemStream

所有已知子接口:

FileItem

所有已知实现类:

DiskFileItem, DiskFileItemFactory.MemoryFileItem, FileItemBase

public interface FileItemStream

This interface provides access to a file or form item that was received within a multipart/form-data POST request. The items contents are retrieved by calling openStream().

Instances of this class are created by accessing the iterator, returned by FileUpload.getItemIterator(HttpServletRequest).

Note: There is an interaction between the iterator and its associated instances of FileItemStream: By invoking Iterator.hasNext() on the iterator, you discard all data, which hasn't been read so far from the previous data.

版本:

$Id: FileItemStream.java 1454691 2013-03-09 12:15:54Z simonetripodi $

方法概要

限定符和类型	方法和说明
String	getContentType() Returns the content type passed by the browser or null if not defined.
String	getFieldName() Returns the name of the field in the multipart form corresponding to this file item.
FileItemHeaders	getHeaders() Returns the collection of headers defined locally within this item.
String	getName() Returns the original filename in the client's filesystem, as provided by the browser (or other client software).
boolean	isFormField() Determines whether or not a FileItem instance represents a simple form field.
InputStream	openStream() Creates an InputStream, which allows to read the items contents.

方法详细资料

getHeaders

FileItemHeaders getHeaders()

Returns the collection of headers defined locally within this item.

返回:

the FileItemHeaders present for this item.

getContentType

String getContentType()

Returns the content type passed by the browser or null if not defined.

返回:

The content type passed by the browser or null if not defined.

getName

String getName()

Returns the original filename in the client's filesystem, as provided by the browser (or other client software). In most cases, this will be the base file name, without path information. However, some clients, such as the Opera browser, do include path information.

返回:

The original filename in the client's filesystem.

getFieldName

String getFieldName()

Returns the name of the field in the multipart form corresponding to this file item.

返回:

The name of the form field.

isFormField

boolean isFormField()

Determines whether or not a FileItem instance represents a simple form field.

返回:

true if the instance represents a simple form field; false if it represents an uploaded file.

openStream

InputStream openStream()
                throws IOException

Creates an InputStream, which allows to read the items contents.

返回:

The input stream, from which the items data may be read.

抛出:

IllegalStateException - The method was already invoked on this item. It is not possible to recreate the data stream.

IOException - An I/O error occurred.