9.11. 扩展点加载扩展

扩展点本身的加载容器,可从不同容器加载扩展点。

扩展接口

org.apache.dubbo.common.extension.ExtensionFactory

扩展配置

<dubbo:application compiler="jdk" />

已知扩展

  • org.apache.dubbo.common.extension.factory.SpiExtensionFactory
  • org.apache.dubbo.config.spring.extension.SpringExtensionFactory

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
                    |-org.apache.dubbo.common.extension.ExtensionFactory (纯文本文件,内容为:xxx=com.xxx.XxxExtensionFactory)
    
  • XxxExtensionFactory.java:
    package com.xxx;
    import org.apache.dubbo.common.extension.ExtensionFactory;
    public class XxxExtensionFactory implements ExtensionFactory {
        public Object getExtension(Class<?> type, String name) {
            // ...
        }
    }
    
  • META-INF/dubbo/org.apache.dubbo.common.extension.ExtensionFactory:
    xxx=com.xxx.XxxExtensionFactory
    
下一节:将 Invoker 接口转换成业务接口。