log4cxx

问题 log4cxx's config is read from follow-by xml via: DOMConfigurator::configure("log4cxx.xml"); But, want to have filename set at runtime, and this creates a problem of either having multiple .xmls for reading, or creating one on the fly (in memory/at disk -- no matter where). <appender name="appxNormalAppender" class="org.apache.log4j.FileAppender"> <param name="file" value="appxLogFile.log" /> <param name="append" value="true" /> <layout class="org.apache.log4j.PatternLayout"> <param name=

问题 log4cxx's config is read from follow-by xml via: DOMConfigurator::configure("log4cxx.xml"); But, want to have filename set at runtime, and this creates a problem of either having multiple .xmls for reading, or creating one on the fly (in memory/at disk -- no matter where). <appender name="appxNormalAppender" class="org.apache.log4j.FileAppender"> <param name="file" value="appxLogFile.log" /> <param name="append" value="true" /> <layout class="org.apache.log4j.PatternLayout"> <param name=

问题 TL;DR version: What do you use for configurable (and preferably captured) logging inside your C++ bits in a Python project? Details follow. Say you have a a few compiled .so modules that may need to do some error checking and warn user of (partially) incorrect data. Currently I'm having a pretty simplistic setup where I'm using logging framework from Python code and log4cxx library from C/C++. log4cxx log level is defined in a file ( log4cxx.properties ) and is currently fixed and I'm

问题 I am using log4cxx for writing to the log. This is my configuration for logging, Here i have log file size of of 4 MB. after that it will rewrite it self.I am able to log using following config file and c++ code. Now I wanted to read the properties and the associated value example : I wanted to read file size info which is required for some purpose in the program. **CONFIG FILE** log4j.rootLogger=debug, stdout, R log4j.appender.stdout=org.apache.log4j.ConsoleAppender log4j.appender.stdout

问题 I've been trying for about 2 weeks now to get a logging library to work with. I've tried Log4cxx, Log4cpp, log4cplus and boost.log. The problem isn't that none of these work for me, it's that I can't figure out how to get them to work at all. I would really like to use log4cxx since I'm working with log4j/logback at work, but I haven't been able to get any of the libraries based on log4j to build. I've been able to build and use the boost library, but boost.log gives me all kinds of linker

问题 I'm writing in C++ under XCode 4.6 on Mountain Lion. I'm trying to add and use the Apache log4cxx library. I installed the library this morning via Brew. I'm linking against liblog4cxx.dylib. I'm getting a link error that just one symbol can't be found: Undefined symbols for architecture x86_64: "log4cxx::Logger::forcedLog(log4cxx::helpers::ObjectPtrT const&, std::__1::basic_string, std::__1::allocator > const&, log4cxx::spi::LocationInfo const&) const", referenced from: I know it's finding

问题 In my application , Multiple threads log the data in the same file .if the file size exceeds the limit , then i have to delete the particular record in file and move every contents upwards. can I do this in Log4cxx?if so ,reply your thoughts.. Thanks.. 回答1: This sample will solve your problem : log4j.rootLogger=debug, stdout, R log4j.appender.stdout=org.apache.log4j.ConsoleAppender log4j.appender.stdout.layout=org.apache.log4j.PatternLayout # Pattern to output the caller's file name and line

问题 In log4net i can easily set process id to to log file name from config easily <appender name="LogFileAppender" type="log4net.Appender.RollingFileAppender,log4net"> <file type="log4net.Util.PatternString" value="Log[%processid]" /> Can i do the same for the log4cxx from config file? If yes, how? 回答1: According to the log4cxx documentation in order to currently do this you need to declare at least one MappedDiagnostic context. An untested partial snippet of doing so is shown below #include <sys

问题 Is it possible to write a custom appender for log4cxx and have it configurable via a properties file (like the built-in appenders)? I'd prefer doing this without having to rebuild log4cxx (e.g. by deriving/extending an existing appender), if possible. Can you point me toward an example? 回答1: You can inherit from AppenderSkeleton or WriterAppender and get the same underlying behaviors without having to rebuilt log4cxx. http://svn.apache.org/viewvc/incubator/log4cxx/trunk/src/test/cpp

问题 Did not find any suitable solution with existing questions so asking new question here. We use log4cxx which has WS2_32.LIB as dependency. WS2_32.LIB is present in Windows SDK version 10.0.16299.0. When using this log4cxx.dll on windows7 WS2_32.dll and all its dependencies gets loaded properly and application start normally. but in windows 10 environment WS2_32.dll expects dependent dll's like API-MS-WIN-CORE-CRT-L1-1-0.DLL which are not part of windows10 or any of the microsoft visual c++