func Error(v ...interface{}) {
	logger.Error(v...)
}
Error logs a message at error level.
package log
func init() {
	logger = NewLogger(10000)
	logger.SetLogFuncCallWithDepth(true, 3)
	logger.SetLogger("console", "")
	logger.SetLevel(LevelDebug)
}
var logger *Logger
func SetLevel(l int) {
	logger.SetLevel(l)
}
func GetDefaultLogger()*Logger{
	return logger
}
func SetLogFuncCall(b bool) {
	logger.SetLogFuncCall(b)
}
func SetLogFile(logFile string, level int, isRotateDaily, drawColor bool, rotateMaxDays int) {
	logger.SetLogFile(logFile, level, isRotateDaily, drawColor, rotateMaxDays)
}