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Copy pathLogger.java
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38 lines (32 loc) · 1.02 KB
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package com.catherine.chain_of_responsibility;
/**
* 打印log时，权重最高的{@code ERROR}在较次的权重过滤器中都能打印，反之权重最低的{@code DEBUG}，在其它权重过滤器时都不会被打印。
* <br>
* 先设置logger链，在用的时候一律执行ErrorLogger的实例，呼叫logMessage时就会带入log级别，具体详见{@link #com.catherine.Main.testChainOfResponsibility()}
*
* @author Catherine
*
*/
public abstract class Logger {
public final static int DEBUG = 0;
public final static int WARNING = 1;
public final static int ERROR = 2;
protected Logger nextLogger;
protected int level;
public void setNextLogger(Logger nextLogger) {
this.nextLogger = nextLogger;
}
/**
* 利用迭代来打印较小权重的log
*
* @param level
* @param message
*/
public void logMessage(int level, String message) {
if (this.level <= level)
write(message);
if (nextLogger != null)
nextLogger.logMessage(level, message);
}
public abstract void write(String message);
}