1. 扩展说明

通道信息派发器，用于指定线程池模型。

2. 扩展接口

com.alibaba.dubbo.remoting.Dispatcher

3. 扩展配置

<dubbo:protocol dispatcher="xxx" />
<dubbo:provider dispatcher="xxx" /> <!-- 缺省值设置，当<dubbo:protocol>没有配置dispatcher属性时，使用此配置 -->

4. 已知扩展

• com.alibaba.dubbo.remoting.transport.dispatcher.all.AllDispatcher
• com.alibaba.dubbo.remoting.transport.dispatcher.direct.DirectDispatcher
• com.alibaba.dubbo.remoting.transport.dispatcher.message.MessageOnlyDispatcher
• com.alibaba.dubbo.remoting.transport.dispatcher.execution.ExecutionDispatcher
• com.alibaba.dubbo.remoting.transport.dispatcher.connection.ConnectionOrderedDispatcher

5. 扩展示例

Maven项目结构

src
 |-main
    |-java
        |-com
            |-xxx
                |-XxxDispatcher.java (实现Dispatcher接口)
    |-resources
        |-META-INF
            |-dubbo
                |-com.alibaba.dubbo.remoting.Dispatcher (纯文本文件，内容为：xxx=com.xxx.XxxDispatcher)

XxxDispatcher.java

package com.xxx;
 
import com.alibaba.dubbo.remoting.Dispatcher;
 
public class XxxDispatcher implements Dispatcher {
    public Group lookup(URL url) {
        // ...
    }
}

META-INF/dubbo/com.alibaba.dubbo.remoting.Dispatcher

xxx=com.xxx.XxxDispatcher