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sdk添加注册消息的接口，可以允许sdk注册自定义消息
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heavyrian2012 committed Feb 19, 2025
1 parent ff75379 commit d14dc74
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Showing 2 changed files with 15 additions and 5 deletions.
11 changes: 8 additions & 3 deletions sdk/src/main/java/cn/wildfirechat/sdk/Main.java
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Original file line number Diff line number Diff line change
Expand Up @@ -990,7 +990,7 @@ static void testReadMessageContentFromDB() throws Exception {
WFCMessage.MessageContent protoContent = WFCMessage.MessageContent.parseFrom(data);
//2. 调用MessageContentFactory接口解析为消息内容。
MessageContent messageContent = MessageContentFactory.decodeMessageContent(protoContent);
//3. 检查是哪种消息，如果没有定义，会回落到UnknownMessageContent。
//3. 检查是哪种消息，如果没有定义，会回落到UnknownMessageContent。自定义消息看本函数最后的注释。
if(messageContent instanceof TextMessageContent) {
TextMessageContent txt = (TextMessageContent)messageContent;
System.out.println("读取到的是文本消息，内容为：" + txt.getText());
Expand All @@ -1001,11 +1001,10 @@ static void testReadMessageContentFromDB() throws Exception {
SoundMessageContent sound = (SoundMessageContent) messageContent;
System.out.println("读取到的是声音消息，声音链接为：" + sound.getRemoteMediaUrl());
}

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protoContent = WFCMessage.MessageContent.parseFrom(data2);
//2. 调用MessageContentFactory接口解析为消息内容。
messageContent = MessageContentFactory.decodeMessageContent(protoContent);
//3. 检查是哪种消息，如果没有定义，会回落到UnknownMessageContent。
if(messageContent instanceof TextMessageContent) {
TextMessageContent txt = (TextMessageContent)messageContent;
System.out.println("读取到的是文本消息，内容为：" + txt.getText());
Expand All @@ -1016,6 +1015,12 @@ static void testReadMessageContentFromDB() throws Exception {
SoundMessageContent sound = (SoundMessageContent) messageContent;
System.out.println("读取到的是声音消息，声音链接为：" + sound.getRemoteMediaUrl());
}

// 问题：MessageContentFactory是如何找到消息的？
// 答：MessageContentFactory在启动时会扫描自己的包cn.wildfirechat.sdk.messagecontent下的所有MessageContent子类，记住子类和消息类型的对应关系。
// 问题：自定义消息如何添加到MessageContentFactory中？
// 答：首先自定义消息需要继承MessageContent，然后有2个选择，1是放到此SDK的cn.wildfirechat.sdk.messagecontent包下打包SDK；2是调用MessageContentFactory中的registerCustomMessageContent方法手动关联。
// 比如 MessageContentFactory.registerCustomMessageContent(CustomTextMessageContent.class);
}

static void checkSendMessageResult(IMResult<SendMessageResult> resultSendMessage) {
Expand Down
9 changes: 7 additions & 2 deletions sdk/src/main/java/cn/wildfirechat/sdk/messagecontent/MessageContentFactory.java
View file
Original file line number Diff line number Diff line change
Expand Up @@ -12,7 +12,7 @@
import java.util.concurrent.ConcurrentHashMap;

public class MessageContentFactory {
private static final Map<Integer, Class<MessageContent>> contentClassMap = new ConcurrentHashMap<>();
private static final Map<Integer, Class<? extends MessageContent>> contentClassMap = new ConcurrentHashMap<>();

static {
registerAllMessageContent();
Expand All @@ -36,7 +36,7 @@ public static MessageContent decodeMessageContent(WFCMessage.MessageContent prot
}

public static MessageContent decodeMessageContent(MessagePayload messagePayload) {
Class<MessageContent> cls = contentClassMap.get(messagePayload.getType());
Class<? extends MessageContent> cls = contentClassMap.get(messagePayload.getType());
MessageContent messageContent;
if(cls != null) {
try {
Expand All @@ -53,6 +53,11 @@ public static MessageContent decodeMessageContent(MessagePayload messagePayload)
return messageContent;
}

public static void registerCustomMessageContent(Class<? extends MessageContent> cls) throws Exception {
MessageContent content = cls.newInstance();
contentClassMap.put(content.getContentType(), cls);
}

private static void registerAllMessageContent() {
try {
for (Class cls : ClassUtil.getAllAssignedClass(MessageContent.class)) {
Expand Down

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