使用asmack for android在XMPP数据包的消息标记中添加自定义属性？
我想要接收的消息包。
<message to="39@domainname.com/smack" chat_id="73392"
custom_packet="true" user_id="44" manager_id="39" time_stamp="0" website_id="0"
visitor_name="John" end_time="False" xml:lang="en-us" type="groupchat"
from="room73392@conference.domainname.com/39">
<body>Hello</body>
<x xmlns="http://jabber.org/protocol/muc#user">
<status xmlns="" code="0"/>
</x></message>
消息包，我收到。
<message to="44@domainname.com/Smack"
from="room73407@conference.domainname.com/Visitor1171" type="groupchat">
<body>Hello</body>
<delay xmlns="urn:xmpp:delay"></delay>
<x xmlns="jabber:x:delay" stamp="20120917T05:57:19"
from="4732abb5@domainname.com/4732abb5">
</x></message>
我有一个smack的源代码，这里是数据包类。 任何人都可以帮我做我的自定义数据包。 任何帮助修改源代码表示赞赏。
代码：
public abstract class Packet {
protected static final String DEFAULT_LANGUAGE =
java.util.Locale.getDefault().getLanguage().toLowerCase();
private static String DEFAULT_XML_NS = null;
/**
* Constant used as packetID to indicate that a packet has no id. To indicate that a packet
* has no id set this constant as the packet's id. When the packet is asked for its id the
* answer will be <tt>null</tt>.
*/
public static final String ID_NOT_AVAILABLE = "ID_NOT_AVAILABLE";
/**
* Date format as defined in XEP-0082 - XMPP Date and Time Profiles.
* The time zone is set to UTC.
* <p>
* Date formats are not synchronized. Since multiple threads access the format concurrently,
* it must be synchronized externally.
*/
public static final DateFormat XEP_0082_UTC_FORMAT = new SimpleDateFormat(
"yyyy-MM-dd'T'HH:mm:ss.SSS'Z'");
static {
XEP_0082_UTC_FORMAT.setTimeZone(TimeZone.getTimeZone("UTC"));
}
/**
* A prefix helps to make sure that ID's are unique across mutliple instances.
*/
private static String prefix = StringUtils.randomString(5) + "-";
/**
* Keeps track of the current increment, which is appended to the prefix to
* forum a unique ID.
*/
private static long id = 0;
private String xmlns = DEFAULT_XML_NS;
/**
* Returns the next unique id. Each id made up of a short alphanumeric
* prefix along with a unique numeric value.
*
* @return the next id.
*/
public static synchronized String nextID() {
return prefix + Long.toString(id++);
}
public static void setDefaultXmlns(String defaultXmlns) {
DEFAULT_XML_NS = defaultXmlns;
}
private String packetID = null;
private String to = null;
private String from = null;
private final List<PacketExtension> packetExtensions
= new CopyOnWriteArrayList<PacketExtension>();
private final Map<String,Object> properties = new HashMap<String, Object>();
private XMPPError error = null;
/**
* Returns the unique ID of the packet. The returned value could be <tt>null</tt> when
* ID_NOT_AVAILABLE was set as the packet's id.
*
* @return the packet's unique ID or <tt>null</tt> if the packet's id is not available.
*/
public String getPacketID() {
if (ID_NOT_AVAILABLE.equals(packetID)) {
return null;
}
if (packetID == null) {
packetID = nextID();
}
return packetID;
}
/**
* Sets the unique ID of the packet. To indicate that a packet has no id
* pass the constant ID_NOT_AVAILABLE as the packet's id value.
*
* @param packetID the unique ID for the packet.
*/
public void setPacketID(String packetID) {
this.packetID = packetID;
}
/**
* Returns who the packet is being sent "to", or <tt>null</tt> if
* the value is not set. The XMPP protocol often makes the "to"
* attribute optional, so it does not always need to be set.<p>
*
* The StringUtils class provides several useful methods for dealing with
* XMPP addresses such as parsing the
* {@link StringUtils#parseBareAddress(String) bare address},
* {@link StringUtils#parseName(String) user name},
* {@link StringUtils#parseServer(String) server}, and
* {@link StringUtils#parseResource(String) resource}.
*
* @return who the packet is being sent to, or <tt>null</tt> if the
* value has not been set.
*/
public String getTo() {
return to;
}
/**
* Sets who the packet is being sent "to". The XMPP protocol often makes
* the "to" attribute optional, so it does not always need to be set.
*
* @param to who the packet is being sent to.
*/
public void setTo(String to) {
this.to = to;
}
/**
* Returns who the packet is being sent "from" or <tt>null</tt> if
* the value is not set. The XMPP protocol often makes the "from"
* attribute optional, so it does not always need to be set.<p>
*
* The StringUtils class provides several useful methods for dealing with
* XMPP addresses such as parsing the
* {@link StringUtils#parseBareAddress(String) bare address},
* {@link StringUtils#parseName(String) user name},
* {@link StringUtils#parseServer(String) server}, and
* {@link StringUtils#parseResource(String) resource}.
*
* @return who the packet is being sent from, or <tt>null</tt> if the
* value has not been set.
*/
public String getFrom() {
return from;
}
/**
* Sets who the packet is being sent "from". The XMPP protocol often
* makes the "from" attribute optional, so it does not always need to
* be set.
*
* @param from who the packet is being sent to.
*/
public void setFrom(String from) {
this.from = from;
}
/**
* Returns the error associated with this packet, or <tt>null</tt> if there are
* no errors.
*
* @return the error sub-packet or <tt>null</tt> if there isn't an error.
*/
public XMPPError getError() {
return error;
}
/**
* Sets the error for this packet.
*
* @param error the error to associate with this packet.
*/
public void setError(XMPPError error) {
this.error = error;
}
/**
* Returns an unmodifiable collection of the packet extensions attached to the packet.
*
* @return the packet extensions.
*/
public synchronized Collection<PacketExtension> getExtensions() {
if (packetExtensions == null) {
return Collections.emptyList();
}
return Collections.unmodifiableList(new ArrayList<PacketExtension>(packetExtensions));
}
/**
* Returns the first extension of this packet that has the given namespace.
*
* @param namespace the namespace of the extension that is desired.
* @return the packet extension with the given namespace.
*/
public PacketExtension getExtension(String namespace) {
return getExtension(null, namespace);
}
/**
* Returns the first packet extension that matches the specified element name and
* namespace, or <tt>null</tt> if it doesn't exist. If the provided elementName is null
* than only the provided namespace is attempted to be matched. Packet extensions are
* are arbitrary XML sub-documents in standard XMPP packets. By default, a
* DefaultPacketExtension instance will be returned for each extension. However,
* PacketExtensionProvider instances can be registered with the
* {@link org.jivesoftware.smack.provider.ProviderManager ProviderManager}
* class to handle custom parsing. In that case, the type of the Object
* will be determined by the provider.
*
* @param elementName the XML element name of the packet extension. (May be null)
* @param namespace the XML element namespace of the packet extension.
* @return the extension, or <tt>null</tt> if it doesn't exist.
*/
public PacketExtension getExtension(String elementName, String namespace) {
if (namespace == null) {
return null;
}
for (PacketExtension ext : packetExtensions) {
if ((elementName == null || elementName.equals(ext.getElementName()))
&& namespace.equals(ext.getNamespace()))
{
return ext;
}
}
return null;
}
/**
* Adds a packet extension to the packet.
*
* @param extension a packet extension.
*/
public void addExtension(PacketExtension extension) {
packetExtensions.add(extension);
}
/**
* Removes a packet extension from the packet.
*
* @param extension the packet extension to remove.
*/
public void removeExtension(PacketExtension extension) {
packetExtensions.remove(extension);
}
/**
* Returns the packet property with the specified name or <tt>null</tt> if the
* property doesn't exist. Property values that were orginally primitives will
* be returned as their object equivalent. For example, an int property will be
* returned as an Integer, a double as a Double, etc.
*
* @param name the name of the property.
* @return the property, or <tt>null</tt> if the property doesn't exist.
*/
public synchronized Object getProperty(String name) {
if (properties == null) {
return null;
}
return properties.get(name);
}
/**
* Sets a property with an Object as the value. The value must be Serializable
* or an IllegalArgumentException will be thrown.
*
* @param name the name of the property.
* @param value the value of the property.
*/
public synchronized void setProperty(String name, Object value) {
if (!(value instanceof Serializable)) {
throw new IllegalArgumentException("Value must be serialiazble");
}
properties.put(name, value);
}
/**
* Deletes a property.
*
* @param name the name of the property to delete.
*/
public synchronized void deleteProperty(String name) {
if (properties == null) {
return;
}
properties.remove(name);
}
/**
* Returns an unmodifiable collection of all the property names that are set.
*
* @return all property names.
*/
public synchronized Collection<String> getPropertyNames() {
if (properties == null) {
return Collections.emptySet();
}
return Collections.unmodifiableSet(new HashSet<String>(properties.keySet()));
}
/**
* Returns the packet as XML. Every concrete extension of Packet must implement
* this method. In addition to writing out packet-specific data, every sub-class
* should also write out the error and the extensions data if they are defined.
*
* @return the XML format of the packet as a String.
*/
public abstract String toXML();
/**
* Returns the extension sub-packets (including properties data) as an XML
* String, or the Empty String if there are no packet extensions.
*
* @return the extension sub-packets as XML or the Empty String if there
* are no packet extensions.
*/
protected synchronized String getExtensionsXML() {
StringBuilder buf = new StringBuilder();
// Add in all standard extension sub-packets.
for (PacketExtension extension : getExtensions()) {
buf.append(extension.toXML());
}
// Add in packet properties.
if (properties != null && !properties.isEmpty()) {
buf.append("<properties xmlns="http://www.jivesoftware.com/xmlns/xmpp/properties">");
// Loop through all properties and write them out.
for (String name : getPropertyNames()) {
Object value = getProperty(name);
buf.append("<property>");
buf.append("<name>").append(StringUtils.escapeForXML(name)).append("</name>");
buf.append("<value type="");
if (value instanceof Integer) {
buf.append("integer">").append(value).append("</value>");
}
else if (value instanceof Long) {
buf.append("long">").append(value).append("</value>");
}
else if (value instanceof Float) {
buf.append("float">").append(value).append("</value>");
}
else if (value instanceof Double) {
buf.append("double">").append(value).append("</value>");
}
else if (value instanceof Boolean) {
buf.append("boolean">").append(value).append("</value>");
}
else if (value instanceof String) {
buf.append("string">");
buf.append(StringUtils.escapeForXML((String)value));
buf.append("</value>");
}
// Otherwise, it's a generic Serializable object. Serialized objects are in
// a binary format, which won't work well inside of XML. Therefore, we base-64
// encode the binary data before adding it.
else {
ByteArrayOutputStream byteStream = null;
ObjectOutputStream out = null;
try {
byteStream = new ByteArrayOutputStream();
out = new ObjectOutputStream(byteStream);
out.writeObject(value);
buf.append("java-object">");
String encodedVal = StringUtils.encodeBase64(byteStream.toByteArray());
buf.append(encodedVal).append("</value>");
}
catch (Exception e) {
e.printStackTrace();
}
finally {
if (out != null) {
try {
out.close();
}
catch (Exception e) {
// Ignore.
}
}
if (byteStream != null) {
try {
byteStream.close();
}
catch (Exception e) {
// Ignore.
}
}
}
}
buf.append("</property>");
}
buf.append("</properties>");
}
return buf.toString();
}
public String getXmlns() {
return this.xmlns;
}
public static String getDefaultLanguage() {
return DEFAULT_LANGUAGE;
}
@Override
public boolean equals(Object o) {
if (this == o) return true;
if (o == null || getClass() != o.getClass()) return false;
Packet packet = (Packet) o;
if (error != null ? !error.equals(packet.error) : packet.error != null) { return false; }
if (from != null ? !from.equals(packet.from) : packet.from != null) { return false; }
if (!packetExtensions.equals(packet.packetExtensions)) { return false; }
if (packetID != null ? !packetID.equals(packet.packetID) : packet.packetID != null) {
return false;
}
if (properties != null ? !properties.equals(packet.properties)
: packet.properties != null) {
return false;
}
if (to != null ? !to.equals(packet.to) : packet.to != null) { return false; }
return !(xmlns != null ? !xmlns.equals(packet.xmlns) : packet.xmlns != null);
}
@Override
public int hashCode() {
int result;
result = (xmlns != null ? xmlns.hashCode() : 0);
result = 31 * result + (packetID != null ? packetID.hashCode() : 0);
result = 31 * result + (to != null ? to.hashCode() : 0);
result = 31 * result + (from != null ? from.hashCode() : 0);
result = 31 * result + packetExtensions.hashCode();
result = 31 * result + properties.hashCode();
result = 31 * result + (error != null ? error.hashCode() : 0);
return result;
}
}
尽管我认为这是一种错误的做法，正如我在其他问题中所说的那样。 这些只是你想要做的一些指导。
您不需要修改数据包，只需扩展消息以放入您自己的自定义属性即可。 这将完成发送所需的内容。 对于接收，您将不得不修改PacketParserUtil.parseMessage（）以确定是否正在发送您的自定义消息或标准消息，并根据需要构造和填充。 我不知道你使用的服务器是否有问题，因为它不是标准的，但它可能会工作。
另一个更简单的选项是简单地通过Packet.setProperty（）将属性作为属性添加到标准消息中，当然也可以通过getProperty（）读取。 这将创建和扩展数据包，但不需要定制工作，因为Smack已经可以读取/写入扩展。
我在Packet Class中添加了新的字段，并在那里写了Getter和Setter。
private String chat_id = null;
private String custom_packet = null;
private String user_id=null;
private String manager_id=null;
private String time_stamp=null;
private String website_id=null;
private String visitor_name=null;
private String end_time=null;
public String getChat_id() {
return chat_id;
}
public void setChat_id(String chat_id) {
this.chat_id = chat_id;
}
public String getCustom_packet() {
return custom_packet;
}
public void setCustom_packet(String custom_packet) {
this.custom_packet = custom_packet;
}
public String getUser_id() {
return user_id;
}
public void setUser_id(String user_id) {
this.user_id = user_id;
}
public String getManager_id() {
return manager_id;
}
public void setManager_id(String manager_id) {
this.manager_id = manager_id;
}
public String getTime_stamp() {
return time_stamp;
}
public void setTime_stamp(String time_stamp) {
this.time_stamp = time_stamp;
}
public String getWebsite_id() {
return website_id;
}
public void setWebsite_id(String website_id) {
this.website_id = website_id;
}
public String getVisitor_name() {
return visitor_name;
}
public void setVisitor_name(String visitor_name) {
this.visitor_name = visitor_name;
}
public String getEnd_time() {
return end_time;
}
public void setEnd_time(String end_time) {
this.end_time = end_time;
}
然后我将此添加到PacketParserUtils类的parseMessage（）方法中。
// ------------------------------CUSTOM ATTRIBUTES-----------------------------
message.setChat_id(parser.getAttributeValue("", "chat_id"));
message.setCustom_packet(parser.getAttributeValue("", "custom_packet"));
message.setUser_id(parser.getAttributeValue("", "user_id"));
message.setManager_id(parser.getAttributeValue("", "manager_id"));
message.setTime_stamp(parser.getAttributeValue("", "time_stamp"));
message.setWebsite_id(parser.getAttributeValue("", "website_id"));
message.setVisitor_name(parser.getAttributeValue("", "visitor_name"));
message.setEnd_time(parser.getAttributeValue("", "end_time"));
// -----------------------------------------------------------------------------
然后我更新了Message Class到XML（）方法。
// ------------------------------CUSTOM TAGS-----------------------------
if(getChat_id()!=null)
{
buf.append(" chat_id="").append(StringUtils.escapeForXML(getChat_id())).append(""");
}
if(getCustom_packet()!=null)
{
buf.append(" custom_packet="").append(StringUtils.escapeForXML(getCustom_packet())).append(""");
}
if(getUser_id()!=null)
{
buf.append(" user_id="").append(StringUtils.escapeForXML(getUser_id())).append(""");
}
if(getManager_id()!=null)
{
buf.append(" manager_id="").append(StringUtils.escapeForXML(getManager_id())).append(""");
}
if(getTime_stamp()!=null)
{
buf.append(" time_stamp="").append(StringUtils.escapeForXML(getTime_stamp())).append(""");
}
if(getWebsite_id()!=null)
{
buf.append(" website_id="").append(StringUtils.escapeForXML(getWebsite_id())).append(""");
}
if(getVisitor_name()!=null)
{
buf.append(" visitor_name="").append(StringUtils.escapeForXML(getVisitor_name())).append(""");
}
if(getEnd_time()!=null)
{
buf.append(" end_time="").append(StringUtils.escapeForXML(getEnd_time())).append(""");
}
//------------------------------------------------------------------------------------
这是我能够在MESSAGE TAG中接收自定义属性的方式。
如果您可以使用像smack中描述的自定义数据包扩展名添加，请执行此操作。 如果您希望与不支持此类扩展的服务器或非客户端客户端兼容，例如服务器不存储它，请使用
message.addBody("varName","varValue);
<message id='8dbda9a2-1f98-478f-9a65-635f181a6ddc'
to='oGghwFpcrR@example.com/oGghwFpcrR' type='chat'><body>abcd</body>
<body xml:lang='varName'>varValue</body><thread>8b5342dcc</thread>
</message>
message.getBody("varName");
不是一个理想的解决方案，但是谁使用多个langs来完成相同的消息？ Smack应该允许你做的是注册你自己的消息解析来取代默认值，或者至少除了缺省值之外
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