Package com.adobe.xfa.protocol

Class HttpForm

java.lang.Object

com.adobe.xfa.protocol.HttpForm

public class HttpForm
extends java.lang.Object

The class HttpForm is designed to post form data to an HTTP(S) server. The data being posted can be in one of three formats:

• content type: application/x-www-form-urlencoded. posting urlencoded name-value pairs,
• content type: MIME-type. for posting user-specified content, and
• content type: multipart/form-data. for posting multipart data.

Here's a snippet of code illustrating the post of name value pairs.

     HttpForm oForm = new HttpForm();
     oForm.SetEncodingType(HttpForm.PostEncodingType.URL_ENCODING);
     oForm.AddNameValuePair("fubar", "not yet");
     oForm.AddNameValuePair("name", "value");
     oForm.AddNameValuePair("submit", "now");
     oForm.Post("http://tools_build/scripts/ReadAll.asp");
     int nStatus = oForm.GetResponseCode();
     String sContentType = oForm.GetResponseType();
     String sGotten = oForm.GetResponse();
     ...
 

Here's another snippet of code illustrating the post of data in a user-specified content type and character set.

     HttpForm oForm = new HttpForm();
     String sSent = 
         "<?xml version=\"1.0\" encoding=\"utf-8\"?>" +
         "<form>" +
         "<name first=\"Ôlêg\" last=\"ÜÇmlæt\"" +
         "</name>" +
         "</form>";
     oForm.SetEncodingType(HttpForm.PostEncodingType.USER_ENCODING);
     oForm.AddEncodedData(sSent.getBytes("UTF-8"), "text/xml", "utf-8");
     oForm.Post("http://tools_build/scripts/ReadAll.asp");
     int nStatus = oForm.GetResponseCode();
     String sContentType = oForm.GetResponseType();
     String sGotten = oForm.GetResponse();
     ...
 

Here's another snippet of code illustrating the post of multipart data in a user-specified content type and character set.

     HttpForm oForm = new HttpForm();
     oForm.SetEncodingType(HttpForm.PostEncodingType.MULTIPART_ENCODING);
     oForm.AddMultipartData(Protocol.SectionDataOption.SECTION_CONTENT_NAME, "fubar".getBytes("US-ASCII"));
     oForm.AddMultipartData(Protocol.SectionDataOption.SECTION_CONTENT_VALUE, "not!".getBytes("US-ASCII"));
     oForm.AddMultipartData(Protocol.SectionDataOption.SECTION_END, null);
     oForm.AddMultipartData(Protocol.SectionDataOption.SECTION_CONTENT_FILE, "protocol/test.html".getBytes("US-ASCII"));
     oForm.AddMultipartData(Protocol.SectionDataOption.SECTION_END, null);
     oForm.AddMultipartData(Protocol.SectionDataOption.SECTION_CONTENT_NAME, "lotto".getBytes("US-ASCII"));
     oForm.AddMultipartData(Protocol.SectionDataOption.SECTION_CONTENT_FILE, "protocol/lotto.wsdl".getBytes("US-ASCII"));
     oForm.AddMultipartData(Protocol.SectionDataOption.SECTION_END, null);
     oForm.Post(sUrl);
     int nStatus = oForm.GetResponseCode();
     String sContentType = oForm.GetResponseType();
     String sGotten = oForm.GetResponse();
     ...
 

Author: Mike P. Tardif

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	HttpForm.PostEncodingType

Field Summary

Fields

Modifier and Type	Field	Description
static int	ChunkSize
static int	MixedSize

Constructor Summary

Constructors

Constructor	Description
HttpForm()	The default c'tor -- instantiate a HttpForm object.

Method Summary

Modifier and Type	Method	Description
void	addEncodedData(byte[] encodedData, java.lang.String sContentType, java.lang.String sCharSet)	Add the given encoded data to the form data being accumulated.
void	addHeaderData(java.lang.String sKey, java.lang.String sValue)	Add a key-value pair to the header data
void	addMultipartData(Protocol.SectionDataOption eOption, byte[] value)	Add the given multipart section to the form data being accumulated.
void	addNameValuePair(java.lang.String name, java.lang.String value)	Add the given (non-urlencoded) name=value pair to the form data being accumulated.
byte[]	getResponse()	Get the data response from the last post.
int	getResponseCode()	Get the status code response from the last post.
java.lang.String	getResponseType()	Get the content type response from the last post.
void	post(java.lang.String sUrl)	Post accumulated form data to a designated URL.
void	setEncodingType(HttpForm.PostEncodingType ePostEncodingType)	Set encoding type.

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

ChunkSize

public static final int ChunkSize

See Also:

Constant Field Values

MixedSize

public static final int MixedSize

See Also:

Constant Field Values

Constructor Detail

HttpForm

public HttpForm()

The default c'tor -- instantiate a HttpForm object.

Method Detail

setEncodingType

public void setEncodingType(HttpForm.PostEncodingType ePostEncodingType)

Set encoding type. One of

• URL_ENCODING for posting urlencoded name-value pairs -- (content type: application/x-www-form-urlencoded),
• USER_ENCODING for posting user-specified content, and
• MULTIPART_ENCODING for posting multipart data -- (content type: multipart/form-data)

Resetting this property clears any previously accumulated form data.

Should be called before AddData() is called.

Parameters:

ePostEncodingType - the encoding type

addNameValuePair

public void addNameValuePair(java.lang.String name,
                             java.lang.String value)

Add the given (non-urlencoded) name=value pair to the form data being accumulated. The name=value pair will be suitably urlencoded, and appended to the data being posted.

This method can be called repeatedly to add to the form's data whenever the encoding-type is application/x-www-form-urlencoded.

Parameters:

name - the name

value - the value

addEncodedData

public void addEncodedData(byte[] encodedData,
                           java.lang.String sContentType,
                           java.lang.String sCharSet)

Add the given encoded data to the form data being accumulated. The encoded data will be appended to the data being posted provided the content type doesn't change.

This method can be called repeatedly to add to the form's data.

Parameters:

encodedData - the encoded data to add

sContentType - optional content type for the data

sCharSet - optional character set for the data

addHeaderData

public void addHeaderData(java.lang.String sKey,
                          java.lang.String sValue)

Add a key-value pair to the header data

This method can be called repeatedly to add to the header data.

Parameters:

sKey - the header type (Content-Type, charset etc.)

sValue - the header value

addMultipartData

public void addMultipartData(Protocol.SectionDataOption eOption,
                             byte[] value)

Add the given multipart section to the form data being accumulated.

This method can be called repeatedly to add to the form's data whenever the encoding-type is multipart/form-data. Each call creates a separate section of multipart data.

The section description will allow the user to specify any one of:

• the content name,
• the content type,
• the content origin (memory or file),
• the content length.

for each section.

Parameters:

eOption - the section type

value - the value

post

public void post(java.lang.String sUrl)

Post accumulated form data to a designated URL.

Parameters:

sUrl - The designated URL

getResponse

public byte[] getResponse()

Get the data response from the last post. This excludes all response headers.

Calling this method is only meaningful after a Post().

Returns:

the response data

getResponseCode

public int getResponseCode()

Get the status code response from the last post.

Calling this method is only meaningful after a Post().

Returns:

the response code

getResponseType

public java.lang.String getResponseType()

Get the content type response from the last post.

Calling this method is only meaningful after a Post().

Returns:

the response type