使用多个参数进行记录 [英] Logging with multiple parameters
问题描述
我目前正在开发一个程序,其中,我必须将所有输出写入日志文件。
I am currently working on a program wherein, I must write all output to a log file.
我需要编写一个日志方法,它应该给出一个带有级别,消息,对象值,另一个消息,整数值,另一个消息和另一个消息的输出整数值,与我指定的顺序相同。我似乎无法找到执行此操作的日志方法。我正在使用 Java.util.logging
。这可能吗?
I need to write a log method, that should give an output with a level, a message, an object value, another message, an integer value, another message and another integer value, in the same order as I have specified. I can't seem to find a log method that does this. I am using Java.util.logging
. Is this possible?
推荐答案
我假设您需要以下格式的日志格式
FINE,Message1,object。 GetValue(),Message2,1,Message3,2
I assume you need the log format in the below format FINE,Message1,object.GetValue(),Message2,1,Message3,2
您需要创建输出消息格式
You need to create an output message format
logger.log(Level.INFO, "{0},{1},{2},{3},{4},{5}",new Object[]{Message1,object.getValue(),Message2,1,Message3,2});
现在你需要通过扩展Formatter类来创建一个自定义格式化程序
Now you need to create a custom formatter which by extending Formatter class
public class DataFormatter extends Formatter {
@Override
public synchronized String format(LogRecord record) {
String formattedMessage = formatMessage(record);
String throwable = "";
String outputFormat = "%1$s, %2$s \n %3$s"; //Also adding for logging exceptions
if (record.getThrown() != null) {
StringWriter sw = new StringWriter();
PrintWriter pw = new PrintWriter(sw);
pw.println();
record.getThrown().printStackTrace(pw);
pw.close();
throwable = sw.toString();
}
return String.format(outputFormat,record.getLevel().getName(),formattedMessage,throwable);
}
}
现在设置新创建的格式化程序
Now set the newly created formatter
for(int i=0;i<logger.getHandlers().length;i++)
logger.getHandlers()[i].setFormatter(new DataFormatter());
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