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序列化扩展

扩展说明

将对象转成字节流,用于网络传输,以及将字节流转为对象,用于在收到字节流数据后还原成对象。

扩展接口

  • org.apache.dubbo.common.serialize.Serialization
  • org.apache.dubbo.common.serialize.ObjectInput
  • org.apache.dubbo.common.serialize.ObjectOutput

扩展配置

<!-- 协议的序列化方式 -->
<dubbo:protocol serialization="xxx" />
<!-- 缺省值设置,当<dubbo:protocol>没有配置serialization时,使用此配置 -->
<dubbo:provider serialization="xxx" />

已知扩展

  • org.apache.dubbo.common.serialize.dubbo.DubboSerialization
  • org.apache.dubbo.common.serialize.hessian.Hessian2Serialization
  • org.apache.dubbo.common.serialize.java.JavaSerialization
  • org.apache.dubbo.common.serialize.java.CompactedJavaSerialization

扩展示例

Maven 项目结构:

src
 |-main
    |-java
        |-com
            |-xxx
                |-XxxSerialization.java (实现Serialization接口)
                |-XxxObjectInput.java (实现ObjectInput接口)
                |-XxxObjectOutput.java (实现ObjectOutput接口)
    |-resources
        |-META-INF
            |-dubbo
                |-org.apache.dubbo.common.serialize.Serialization (纯文本文件,内容为:xxx=com.xxx.XxxSerialization)

XxxSerialization.java:

package com.xxx;
 
import org.apache.dubbo.common.serialize.Serialization;
import org.apache.dubbo.common.serialize.ObjectInput;
import org.apache.dubbo.common.serialize.ObjectOutput;
 
 
public class XxxSerialization implements Serialization {
    public ObjectOutput serialize(Parameters parameters, OutputStream output) throws IOException {
        return new XxxObjectOutput(output);
    }
    public ObjectInput deserialize(Parameters parameters, InputStream input) throws IOException {
        return new XxxObjectInput(input);
    }
}

META-INF/dubbo/org.apache.dubbo.common.serialize.Serialization:

xxx=com.xxx.XxxSerialization