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public abstract classAbstractLogger{ publicstaticint INFO =1; publicstaticint DEBUG =2; publicstaticint ERROR =3; protectedint level; //拦截类中聚合责任链中的下一个拦截类 protectedAbstractLogger nextLogger; publicvoid setNextLogger(AbstractLogger nextLogger)//设置责任链中的下一个拦截类 { this.nextLogger = nextLogger; } publicvoid logMessage(int level,String message){ if(this.level <= level){ //条件判断是否适合自己处理 write(message); } if(nextLogger !=null){ //把信息传递到责任链的下一个拦截类处理 nextLogger.logMessage(level, message); } } abstract protectedvoid write(String message); }标签：
原文地址：http://www.cnblogs.com/Doing-what-I-love/p/5621168.html
