log4javascript 的单元测试中有一个ArrayAppender
用于将它收到的所有日志消息存储在一个数组中,该数组可通过其logMessages
属性访问。希望它应该出现在下一个版本的主要发行版中。这是一个独立的实现:
var ArrayAppender = function(layout) {
if (layout) {
this.setLayout(layout);
}
this.logMessages = [];
};
ArrayAppender.prototype = new log4javascript.Appender();
ArrayAppender.prototype.layout = new log4javascript.NullLayout();
ArrayAppender.prototype.append = function(loggingEvent) {
var formattedMessage = this.getLayout().format(loggingEvent);
if (this.getLayout().ignoresThrowable()) {
formattedMessage += loggingEvent.getThrowableStrRep();
}
this.logMessages.push(formattedMessage);
};
ArrayAppender.prototype.toString = function() {
return "[ArrayAppender]";
};
示例使用:
var log = log4javascript.getLogger("main");
var appender = new ArrayAppender();
log.addAppender(appender);
log.debug("A message");
alert(appender.logMessages);