log4cpp C++ 代码调试

Log for C++ 下载，API文档

log4cpp第一个程序HelloWorld

1. 指定输出地点，并指定样式Layout
2. 获取Category 的根，并且添加Appender
3. 设置Category的优先级
4. 记录日志
5. 关闭Category

头文件

注意头文件是后缀 .hh

#include 
#include 
#include 
#include 
#include 
using namespace std;int main(int argc, char* argv[])
{    
    log4cpp::OstreamAppender* osAppender = new log4cpp::OstreamAppender("osAppender",&cout);   
   osAppender->setLayout(new log4cpp::BasicLayout());         log4cpp::Category& root = log4cpp::Category::getRoot();    root.addAppender(osAppender);   
   root.setPriority(log4cpp::Priority::DEBUG);      
   root.error("Hello log4cpp in a Error Message!");    
   root.warn("Hello log4cpp in a Warning Message!");      
  log4cpp::Category::shutdown();     
   return 0;
}

编译：g++ helloworld.cpp -o helloworld -llog4cpp -lpthread

运行结果：1248337987 ERROR : Hello log4cpp in a Error Message!

1248337987 WARN : Hello log4cpp in a Warning Message!