Apache Struts API Documentation: Class MultipartIterator

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org.apache.struts.upload Class MultipartIterator

java.lang.Object
  |
  +--org.apache.struts.upload.MultipartIterator
Deprecated. Use the Commons FileUpload based multipart handler instead. This class will be removed after Struts 1.2.

public class MultipartIterator
extends java.lang.Object

The MultipartIterator class is responsible for reading the input data of a multipart request and splitting it up into input elements, wrapped inside of a MultipartElement for easy definition. To use this class, create a new instance of MultipartIterator passing it a HttpServletRequest in the constructor. Then use the getNextElement method until it returns null, then you're finished. Example: 

      MultipartIterator iterator = new MultipartIterator(request);
      MultipartElement element;

      while ((element = iterator.getNextElement()) != null) {
           //do something with element
      }

See Also:
MultipartElement

Field Summary
protected  java.lang.String boundary
          Deprecated. The boundary for this multipart request
protected  int bufferSize
          Deprecated. The amount of data read from a request at a time.
protected  int contentLength
          Deprecated. The content length of this request
protected  java.lang.String contentType
          Deprecated. The content-type.
private static java.lang.String DEFAULT_ENCODING
          Deprecated. The default encoding of a text element if none is specified.
protected  int diskBufferSize
          Deprecated. The size in bytes written to the filesystem at a time [20K]
private static java.lang.String FILE_PREFIX
          Deprecated.  
static java.lang.String HEADER_CONTENT_DISPOSITION
          Deprecated. The name of the Content-Disposition header.
static java.lang.String HEADER_CONTENT_TYPE
          Deprecated. The name of the Content-Type header.
protected  MultipartBoundaryInputStream inputStream
          Deprecated. The InputStream to use to read the multipart data.
protected  boolean maxLengthExceeded
          Deprecated. Whether the maximum length has been exceeded.
protected  long maxSize
          Deprecated. The maximum file size in bytes allowed.
static java.lang.String MESSAGE_CANNOT_RETRIEVE_BOUNDARY
          Deprecated. The exception message for when the boundary of a multipart request can't be determined.
private static java.lang.String PARAMETER_BOUNDARY
          Deprecated.  
protected  javax.servlet.http.HttpServletRequest request
          Deprecated. The request instance for this class
protected  java.lang.String tempDir
          Deprecated. The temporary directory to store files
private static int TEXT_BUFFER_SIZE
          Deprecated. The size in bytes to copy of text data at a time.
 
Constructor Summary
MultipartIterator(javax.servlet.http.HttpServletRequest request)
          Deprecated. Constructs a MultipartIterator with a default buffer size and no file size limit
MultipartIterator(javax.servlet.http.HttpServletRequest request, int bufferSize)
          Deprecated. Constructs a MultipartIterator with the specified buffer size and no file size limit
MultipartIterator(javax.servlet.http.HttpServletRequest request, int bufferSize, long maxSize)
          Deprecated. Constructs a MultipartIterator with the specified buffer size and the specified file size limit in bytes
MultipartIterator(javax.servlet.http.HttpServletRequest request, int bufferSize, long maxSize, java.lang.String tempDir)
          Deprecated.  
 
Method Summary
protected  MultipartElement createFileMultipartElement()
          Deprecated. Create a multipart element instance representing the file in the stream.
protected  java.io.File createLocalFile()
          Deprecated. Creates a file on disk from the current mulitpart element.
protected  MultipartElement createTextMultipartElement(java.lang.String encoding)
          Deprecated. Create a text element from the data in the body of the element.
private  void getBoundaryFromContentType()
          Deprecated. Parses a content-type String for the boundary.
 int getBufferSize()
          Deprecated. Get the maximum amount of bytes read from a line at one time
private  void getContentTypeOfRequest()
          Deprecated. Gets the value of the Content-Type header of the request.
protected  java.lang.String getElementEncoding()
          Deprecated. Get the character encoding used for this current multipart element.
 long getMaxSize()
          Deprecated. Get the maximum post data size allowed for a multipart request
 MultipartElement getNextElement()
          Deprecated. Retrieves the next element in the iterator if one exists.
 boolean isMaxLengthExceeded()
          Deprecated. Whether or not the maximum length has been exceeded by the client.
protected  void parseRequest()
          Deprecated. Handles retrieving the boundary and setting the input stream
 void setBufferSize(int bufferSize)
          Deprecated. Set the maximum amount of bytes read from a line at one time
 void setMaxSize(long maxSize)
          Deprecated. Set the maximum post data size allowed for a multipart request
 
Methods inherited from class java.lang.Object
, clone, equals, finalize, getClass, hashCode, notify, notifyAll, registerNatives, toString, wait, wait, wait
 

Field Detail

DEFAULT_ENCODING

private static final java.lang.String DEFAULT_ENCODING
Deprecated. 
The default encoding of a text element if none is specified.

TEXT_BUFFER_SIZE

private static final int TEXT_BUFFER_SIZE
Deprecated. 
The size in bytes to copy of text data at a time.

HEADER_CONTENT_TYPE

public static java.lang.String HEADER_CONTENT_TYPE
Deprecated. 
The name of the Content-Type header.

HEADER_CONTENT_DISPOSITION

public static final java.lang.String HEADER_CONTENT_DISPOSITION
Deprecated. 
The name of the Content-Disposition header.

MESSAGE_CANNOT_RETRIEVE_BOUNDARY

public static final java.lang.String MESSAGE_CANNOT_RETRIEVE_BOUNDARY
Deprecated. 
The exception message for when the boundary of a multipart request can't be determined.

PARAMETER_BOUNDARY

private static final java.lang.String PARAMETER_BOUNDARY
Deprecated. 

FILE_PREFIX

private static final java.lang.String FILE_PREFIX
Deprecated. 

request

protected javax.servlet.http.HttpServletRequest request
Deprecated. 
The request instance for this class

inputStream

protected MultipartBoundaryInputStream inputStream
Deprecated. 
The InputStream to use to read the multipart data.

boundary

protected java.lang.String boundary
Deprecated. 
The boundary for this multipart request

maxSize

protected long maxSize
Deprecated. 
The maximum file size in bytes allowed. Ignored if -1

contentLength

protected int contentLength
Deprecated. 
The content length of this request

diskBufferSize

protected int diskBufferSize
Deprecated. 
The size in bytes written to the filesystem at a time [20K]

bufferSize

protected int bufferSize
Deprecated. 
The amount of data read from a request at a time. This also represents the maximum size in bytes of a line read from the request [4KB]

tempDir

protected java.lang.String tempDir
Deprecated. 
The temporary directory to store files

contentType

protected java.lang.String contentType
Deprecated. 
The content-type.

maxLengthExceeded

protected boolean maxLengthExceeded
Deprecated. 
Whether the maximum length has been exceeded.
Constructor Detail

MultipartIterator

public MultipartIterator(javax.servlet.http.HttpServletRequest request)
                  throws java.io.IOException
Deprecated. 
Constructs a MultipartIterator with a default buffer size and no file size limit
Parameters:
request - The multipart request to iterate

MultipartIterator

public MultipartIterator(javax.servlet.http.HttpServletRequest request,
                         int bufferSize)
                  throws java.io.IOException
Deprecated. 
Constructs a MultipartIterator with the specified buffer size and no file size limit
Parameters:
request - The multipart request to iterate
bufferSize - The size in bytes that should be read from the input stream at a times

MultipartIterator

public MultipartIterator(javax.servlet.http.HttpServletRequest request,
                         int bufferSize,
                         long maxSize)
                  throws java.io.IOException
Deprecated. 
Constructs a MultipartIterator with the specified buffer size and the specified file size limit in bytes
Parameters:
request - The multipart request to iterate
bufferSize - The size in bytes that should be read from the input stream at a times
maxSize - The maximum size in bytes allowed for a multipart element's data

MultipartIterator

public MultipartIterator(javax.servlet.http.HttpServletRequest request,
                         int bufferSize,
                         long maxSize,
                         java.lang.String tempDir)
                  throws java.io.IOException
Deprecated. 
Method Detail

parseRequest

protected void parseRequest()
                     throws java.io.IOException
Deprecated. 
Handles retrieving the boundary and setting the input stream

getNextElement

public MultipartElement getNextElement()
                                throws java.io.IOException
Deprecated. 
Retrieves the next element in the iterator if one exists.
Returns:
a MultipartElement representing the next element in the request data
Throws:
java.io.IOException - if the post size exceeds the maximum file size passed in the 3 argument constructor or if the "ISO-8859-1" encoding isn't found

getElementEncoding

protected java.lang.String getElementEncoding()
Deprecated. 
Get the character encoding used for this current multipart element.

createTextMultipartElement

protected MultipartElement createTextMultipartElement(java.lang.String encoding)
                                               throws java.io.IOException
Deprecated. 
Create a text element from the data in the body of the element.
Parameters:
encoding - The character encoding of the string.

createFileMultipartElement

protected MultipartElement createFileMultipartElement()
                                               throws java.io.IOException
Deprecated. 
Create a multipart element instance representing the file in the stream.

setBufferSize

public void setBufferSize(int bufferSize)
Deprecated. 
Set the maximum amount of bytes read from a line at one time
See Also:
ServletInputStream.readLine(byte[], int, int)

getBufferSize

public int getBufferSize()
Deprecated. 
Get the maximum amount of bytes read from a line at one time
See Also:
ServletInputStream.readLine(byte[], int, int)

setMaxSize

public void setMaxSize(long maxSize)
Deprecated. 
Set the maximum post data size allowed for a multipart request
Parameters:
maxSize - The maximum post data size in bytes, set to -1 for no limit

getMaxSize

public long getMaxSize()
Deprecated. 
Get the maximum post data size allowed for a multipart request
Returns:
The maximum post data size in bytes

isMaxLengthExceeded

public boolean isMaxLengthExceeded()
Deprecated. 
Whether or not the maximum length has been exceeded by the client.

getBoundaryFromContentType

private final void getBoundaryFromContentType()
                                       throws java.io.IOException
Deprecated. 
Parses a content-type String for the boundary.

getContentTypeOfRequest

private final void getContentTypeOfRequest()
Deprecated. 
Gets the value of the Content-Type header of the request.

createLocalFile

protected java.io.File createLocalFile()
                                throws java.io.IOException
Deprecated. 
Creates a file on disk from the current mulitpart element.
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