SOAPMessage (Java EE 5 SDK)

javax.xml.soap Class SOAPMessage

java.lang.Object
  javax.xml.soap.SOAPMessage

public abstract class SOAPMessage

extends Object

The root class for all SOAP messages. As transmitted on the "wire", a SOAP message is an XML document or a MIME message whose first body part is an XML/SOAP document.

A SOAPMessage object consists of a SOAP part and optionally one or more attachment parts. The SOAP part for a SOAPMessage object is a SOAPPart object, which contains information used for message routing and identification, and which can contain application-specific content. All data in the SOAP Part of a message must be in XML format.

A new SOAPMessage object contains the following by default:

• A SOAPPart object
• A SOAPEnvelope object
• A SOAPBody object
• A SOAPHeader object

     SOAPPart sp = message.getSOAPPart();
     SOAPEnvelope se = sp.getEnvelope();
     SOAPBody sb = se.getBody();
     SOAPHeader sh = se.getHeader();
 

In addition to the mandatory SOAPPart object, a SOAPMessage object may contain zero or more AttachmentPart objects, each of which contains application-specific data. The SOAPMessage interface provides methods for creating AttachmentPart objects and also for adding them to a SOAPMessage object. A party that has received a SOAPMessage object can examine its contents by retrieving individual attachment parts.

Unlike the rest of a SOAP message, an attachment is not required to be in XML format and can therefore be anything from simple text to an image file. Consequently, any message content that is not in XML format must be in an AttachmentPart object.

A MessageFactory object may create SOAPMessage objects with behavior that is specialized to a particular implementation or application of SAAJ. For instance, a MessageFactory object may produce SOAPMessage objects that conform to a particular Profile such as ebXML. In this case a MessageFactory object might produce SOAPMessage objects that are initialized with ebXML headers.

In order to ensure backward source compatibility, methods that are added to this class after version 1.1 of the SAAJ specification are all concrete instead of abstract and they all have default implementations. Unless otherwise noted in the JavaDocs for those methods the default implementations simply throw an UnsupportedOperationException and the SAAJ implementation code must override them with methods that provide the specified behavior. Legacy client code does not have this restriction, however, so long as there is no claim made that it conforms to some later version of the specification than it was originally written for. A legacy class that extends the SOAPMessage class can be compiled and/or run against succeeding versions of the SAAJ API without modification. If such a class was correctly implemented then it will continue to behave correctly relative to the version of the specification against which it was written.

另请参见:

MessageFactory, AttachmentPart

CHARACTER_SET_ENCODING

public static final String CHARACTER_SET_ENCODING

Specifies the character type encoding for the SOAP Message. Valid values include "utf-8" and "utf-16". See vendor documentation for additional supported values. The default is "utf-8".

从以下版本开始:

SAAJ 1.2

另请参见:

SOAPMessage.setProperty, 常量字段

WRITE_XML_DECLARATION

public static final String WRITE_XML_DECLARATION

Specifies whether the SOAP Message will contain an XML declaration when it is sent. The only valid values are "true" and "false". The default is "false".

从以下版本开始:

SAAJ 1.2

另请参见:

SOAPMessage.setProperty, 常量字段

SOAPMessage

public SOAPMessage()

setContentDescription

public abstract void setContentDescription(String description)

Sets the description of this SOAPMessage object's content with the given description.

参数:

description - a String describing the content of this message

另请参见:

getContentDescription()

getContentDescription

public abstract String getContentDescription()

Retrieves a description of this SOAPMessage object's content.

返回:

a String describing the content of this message or null if no description has been set

另请参见:

setContentDescription(java.lang.String)

getSOAPPart

public abstract SOAPPart getSOAPPart()

Gets the SOAP part of this SOAPMessage object.

SOAPMessage object contains one or more attachments, the SOAP Part must be the first MIME body part in the message.

返回:

the SOAPPart object for this SOAPMessage object

getSOAPBody

public SOAPBody getSOAPBody()
                     throws SOAPException

Gets the SOAP Body contained in this SOAPMessage object.

返回:

the SOAPBody object contained by this SOAPMessage object

抛出异常:

SOAPException - if the SOAP Body does not exist or cannot be retrieved

从以下版本开始:

SAAJ 1.2

getSOAPHeader

public SOAPHeader getSOAPHeader()
                         throws SOAPException

Gets the SOAP Header contained in this SOAPMessage object.

返回:

the SOAPHeader object contained by this SOAPMessage object

抛出异常:

SOAPException - if the SOAP Header does not exist or cannot be retrieved

从以下版本开始:

SAAJ 1.2

removeAllAttachments

public abstract void removeAllAttachments()

Removes all AttachmentPart objects that have been added to this SOAPMessage object.

This method does not touch the SOAP part.

countAttachments

public abstract int countAttachments()

Gets a count of the number of attachments in this message. This count does not include the SOAP part.

返回:

the number of AttachmentPart objects that are part of this SOAPMessage object

getAttachments

public abstract Iterator getAttachments()

Retrieves all the AttachmentPart objects that are part of this SOAPMessage object.

返回:

an iterator over all the attachments in this message

getAttachments

public abstract Iterator getAttachments(MimeHeaders headers)

Retrieves all the AttachmentPart objects that have header entries that match the specified headers. Note that a returned attachment could have headers in addition to those specified.

参数:

headers - a MimeHeaders object containing the MIME headers for which to search

返回:

an iterator over all attachments that have a header that matches one of the given headers

removeAttachments

public abstract void removeAttachments(MimeHeaders headers)

Removes all the AttachmentPart objects that have header entries that match the specified headers. Note that the removed attachment could have headers in addition to those specified.

参数:

headers - a MimeHeaders object containing the MIME headers for which to search

从以下版本开始:

SAAJ 1.3

getAttachment

public abstract AttachmentPart getAttachment(SOAPElement element)
                                      throws SOAPException

Returns an AttachmentPart object that is associated with an attachment that is referenced by this SOAPElement or null if no such attachment exists. References can be made via an href attribute as described in SOAP Messages with Attachments, or via a single Text child node containing a URI as described in the WS-I Attachments Profile 1.0 for elements of schema type ref:swaRef(ref:swaRef). These two mechanisms must be supported. The support for references via href attribute also implies that this method should also be supported on an element that is an xop:Include element ( XOP). other reference mechanisms may be supported by individual implementations of this standard. Contact your vendor for details.

参数:

element - The SOAPElement containing the reference to an Attachment

返回:

the referenced AttachmentPart or null if no such AttachmentPart exists or no reference can be found in this SOAPElement.

抛出异常:

SOAPException - if there is an error in the attempt to access the attachment

从以下版本开始:

SAAJ 1.3

addAttachmentPart

public abstract void addAttachmentPart(AttachmentPart AttachmentPart)

Adds the given AttachmentPart object to this SOAPMessage object. An AttachmentPart object must be created before it can be added to a message.

参数:

AttachmentPart - an AttachmentPart object that is to become part of this SOAPMessage object

抛出异常:

IllegalArgumentException

createAttachmentPart

public abstract AttachmentPart createAttachmentPart()

Creates a new empty AttachmentPart object. Note that the method addAttachmentPart must be called with this new AttachmentPart object as the parameter in order for it to become an attachment to this SOAPMessage object.

返回:

a new AttachmentPart object that can be populated and added to this SOAPMessage object

createAttachmentPart

public AttachmentPart createAttachmentPart(DataHandler dataHandler)

Creates an AttachmentPart object and populates it using the given DataHandler object.

参数:

dataHandler - the javax.activation.DataHandler object that will generate the content for this SOAPMessage object

返回:

a new AttachmentPart object that contains data generated by the given DataHandler object

抛出异常:

IllegalArgumentException - if there was a problem with the specified DataHandler object

另请参见:

DataHandler, DataContentHandler

getMimeHeaders

public abstract MimeHeaders getMimeHeaders()

Returns all the transport-specific MIME headers for this SOAPMessage object in a transport-independent fashion.

返回:

a MimeHeaders object containing the MimeHeader objects

createAttachmentPart

public AttachmentPart createAttachmentPart(Object content,
                                           String contentType)

Creates an AttachmentPart object and populates it with the specified data of the specified content type. The type of the Object should correspond to the value given for the Content-Type.

参数:

content - an Object containing the content for the AttachmentPart object to be created

contentType - a String object giving the type of content; examples are "text/xml", "text/plain", and "image/jpeg"

返回:

a new AttachmentPart object that contains the given data

抛出异常:

IllegalArgumentException - may be thrown if the contentType does not match the type of the content object, or if there was no DataContentHandler object for the given content object

另请参见:

DataHandler, DataContentHandler

saveChanges

public abstract void saveChanges()
                          throws SOAPException

Updates this SOAPMessage object with all the changes that have been made to it. This method is called automatically when writeTo(OutputStream) is called. However, if changes are made to a message that was received or to one that has already been sent, the method saveChanges needs to be called explicitly in order to save the changes. The method saveChanges also generates any changes that can be read back (for example, a MessageId in profiles that support a message id). All MIME headers in a message that is created for sending purposes are guaranteed to have valid values only after saveChanges has been called.

In addition, this method marks the point at which the data from all constituent AttachmentPart objects are pulled into the message.

抛出异常:

SOAPException - if there was a problem saving changes to this message.

SOAPException

public abstract boolean saveRequired()

public abstract void writeTo(OutputStream out)
                      throws SOAPException,
                             IOException

public void setProperty(String property,
                        Object value)
                 throws SOAPException

public Object getProperty(String property)
                   throws SOAPException