创建跟踪日志记录器和消息日志记录器。
把异常添加到跟踪日志记录器(清单3)打印出错误消息和完整的堆栈跟踪。
Adding an exception to the trace logger (Listing 3) prints the error message along with a full stack trace.
跟踪日志记录用纯文本格式记录了一系列跟踪日志记录器事件和消息日志记录器事件。
Trace logs record a sequence of trace and message logger events as plain text. The default trace log format includes several fields, starting with.
下面的类定义（清单1）演示了这个用于定义跟踪日志记录器和消息日志记录器的方法。
The following class definition (Listing 1) demonstrates this method for defining trace and message loggers.
把跟踪日志记录和消息日志记录添加到WebSphere应用程序中详细描述了这两种方法。
The article Getting started with JRas: Adding trace and message logging to WebSphere Applications describes both techniques in detail.
从JRas起步：把跟踪日志记录和消息日志记录添加到WebSphere应用程序中详细描述了如何使用JRasAPI生成有用的诊断跟踪。
The article Getting started with JRas: Adding trace and message logging to WebSphere applications describes in detail how to generate useful diagnostic traces using JRas APIs.
我们使用com . ibm .websphere . ras . Manager类来创建日志记录器对象，并向一个组来注册跟踪日志记录器。
We use the com.ibm.websphere.ras.Manager class to create the logger objects, and to register the trace logger with a group.
为什么不使用更复杂的日志记录机制来跟踪哪些文件已经上传，以及何时上传?
Why not use a more sophisticated logging mechanism to keep track of which files have been uploaded and when?
通常，跟踪和日志记录对确定生产或压力测试环境中的意外行为最为有用，但您也可以在开发过程中使用它。
Often, tracing and logging is most beneficial for determining unexpected behavior in the production or stress-testing environment, but you can use it during development too.
这又将我们带回这个点：保持日志简洁，记录足够信息以跟踪调用通过系统。
This leads us back to the point of making your logging concise and logging enough information to trace the call through the system.
可以在进程最后附加一个简单的日志记录系统，以跟踪所涉及的项目的每次下载操作。
You can attach a simple logging system at the end of the process that keeps track of each download of the item in question.
由于消息在传输到队列管理器之前得到加密，因此数据在内存、队列文件、日志和跟踪记录中受到保护。
Because the messages are encrypted before they are passed to the queue manager, the data is protected in memory, in the queue files, in logs, and in traces.
比如jsr - 47这类标准支持的个性化定制、工具和报告服务，这类标准定义了用于错误和跟踪记录的标准日志api。
Some examples include personalization, utility, and reporting services supported by standards such as JSR-47, which defines a standard logging API for error and trace logs.
为日志记录、跟踪消息交换以及安全性策略实施提供操作支持。
Operational support for logging, tracing message exchanges, and enforcement of security policy.
这意味着消息在内存、日志文件、跟踪记录和返回队列结构的文件中是可读的。
This means that the text of the messages is readable in memory, in log files, in traces, and in the files that back the queue structures.
更加集成的日志记录和跟踪功能。
采用这种默认配置，可以看到INFO及以上级别的的所有日志记录都包含在标准的日志处理器文件error - 0.0 . log中，而ALL日志条目被写入跟踪日志文件。
Given this default configuration, you can see that all logging of INFO and above goes to the standard log handler file, error-0.0.log, and that all log entries are written to the trace log file.
它允许不间断的日志记录、跟踪和调试。
您可能想尝试找出某个特定应用程序将日志数据记录到何处，或者正在跟踪某个问题。
You might be trying to find out where a particular application is logging data to, or you might be tracking down a problem.
日志记录应当可转换为多种详细程度，而且应当使跨系统的跟踪信息具有相关性，例如通过记录准确时间戳或者报头标识符。
The logging should be switchable to multiple levels of detail and should enable correlation of tracing information across systems, such as via the logging of accurate timestamps or header identifiers.
日志记录/跟踪太多或对日志消息的过滤太少，这常会带来超负荷的日志信息。
Too much log/trace or too little filtering of log messages causes information overload in the logs.
所有系统都会生成不同数量的日志文件，这些文件用于跟踪和记录关于计算机的不同信息。
All systems generate a varying quantity of log files that track and record different information about your machine.
一些服务可以配置详细、调试或跟踪型日志记录，这会在日志中记录标准信息或错误消息之外的更多信息。
Some services allow for the configuration of verbose, debug, or trace-type logging so that more than the standard informational or error messages are logged.
甚至当跟踪禁用时，您的代码将在每个跟踪点至少调用一个日志记录器方法。
Even when trace is disabled, your code will call at least one logger method per trace point.
创建并记录异常日志会导致一些时间开销，但是堆栈跟踪可以很好地用于捕获问题原因。
Creating and logging the exception incurs some overhead, but the stack trace is invaluable for tracking down who caused the problem.
日志记录模式提供服务调用可跟踪性。
The logging pattern provides service invocation traceability.
要进行有效的日志记录，需要使用大量的磁盘空间，并且在多线程环境中，所需的磁盘空间会成倍地增加，因为大量的线程都在记录它们的跟踪信息。
A significant amount of disk space is required for effective logging, and it increases many fold in a multi-threaded environment where numerous threads write their trace.
跟踪字符串提供了一种语言用于精确地选择出您希望的输出，废弃其他日志记录器消息。
Trace strings provide a language for selecting exactly the output you want, discarding other logger messages.
在默认情况下，日志记录是关闭的；对于希望跟踪的每个AmazonS3bucket，必须显式地启用日志记录。
The log records are turned off by default; you have to explicitly enable the logging for each Amazon S3 bucket you want to track.
在默认情况下，日志记录是关闭的；对于希望跟踪的每个AmazonS3bucket，必须显式地启用日志记录。
The log records are turned off by default; you have to explicitly enable the logging for each Amazon S3 bucket you want to track.
应用推荐