1. 扩展说明

扩展点本身的加载容器，可从不同容器加载扩展点。

2. 扩展接口

com.alibaba.dubbo.common.extension.ExtensionFactory

3. 扩展配置

<dubbo:application compiler="jdk" />

4. 已知扩展

• com.alibaba.dubbo.common.extension.factory.SpiExtensionFactory
• com.alibaba.dubbo.config.spring.extension.SpringExtensionFactory

5. 扩展示例

Maven项目结构

src
 |-main
    |-java
        |-com
            |-xxx
                |-XxxExtensionFactory.java (实现ExtensionFactory接口)
    |-resources
        |-META-INF
            |-dubbo
                |-com.alibaba.dubbo.common.extension.ExtensionFactory (纯文本文件，内容为：xxx=com.xxx.XxxExtensionFactory)

XxxExtensionFactory.java

package com.xxx;
 
import com.alibaba.dubbo.common.extension.ExtensionFactory;
 
public class XxxExtensionFactory implements ExtensionFactory {
    public Object getExtension(Class<?> type, String name) {
        // ...
    }
}

META-INF/dubbo/com.alibaba.dubbo.common.extension.ExtensionFactory

xxx=com.xxx.XxxExtensionFactory