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日志适配扩展

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(1) 扩展说明:

日志输出适配扩展点。

(2) 扩展接口:

com.alibaba.dubbo.common.logger.LoggerAdapter

(3) 扩展配置:

<dubbo:application logger="xxx" />
-Ddubbo:application.logger=xxx

(4) 已知扩展:

slf4j=com.alibaba.dubbo.common.logger.slf4j.Slf4jLoggerAdapter
jcl=com.alibaba.dubbo.common.logger.jcl.JclLoggerAdapter
log4j=com.alibaba.dubbo.common.logger.log4j.Log4jLoggerAdapter
jdk=com.alibaba.dubbo.common.logger.jdk.JdkLoggerAdapter

(5) 扩展示例:

Maven项目结构
src
 |-main
    |-java
        |-com
            |-xxx
                |-XxxLoggerAdapter.java (实现LoggerAdapter接口)
    |-resources
        |-META-INF
            |-dubbo
                |-com.alibaba.dubbo.common.logger.LoggerAdapter (纯文本文件,内容为:xxx=com.xxx.XxxLoggerAdapter)
XxxLoggerAdapter.java
package com.xxx;
 
import com.alibaba.dubbo.common.logger.LoggerAdapter;
 
public class XxxLoggerAdapter implements LoggerAdapter {
    public Logger getLogger(URL url) {
        // ...
    }
}
XxxLogger.java
package com.xxx;
 
import com.alibaba.dubbo.common.logger.Logger;
 
public class XxxLogger implements Logger {
    public XxxLogger(URL url) {
        // ...
    }
    public void info(String msg) {
        // ...
    }
    // ...
}
META-INF/dubbo/com.alibaba.dubbo.common.logger.LoggerAdapter
xxx=com.xxx.XxxLoggerAdapter
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