import java.io.UnsupportedEncodingException;import org.apache.commons.logging.Log;import org.apache.commons.logging.LogFactory;public class Main {

    static final Log log = LogFactory.getLog(Main.class);    public static void main(String[] args) {
        log.info("Start process...");        try {
            "".getBytes("invalidCharsetName");        } catch (UnsupportedEncodingException e) {
            // TODO: 使用log.error(String, Throwable)打印异常            log.error(e.toString(),e);        }
        log.info("Process end.");    }
}