How to logging an activity on my project

Question

I've created a web java connect to Database (using MySQL ver5.6). On my web java there are the login panel username & password(the account username & password from DB). Now it's working ok but i want to logging activity ( login true or false) using Apache log4j.properties. Please help me complete it.! Here is my code :

package dao;

import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.SQLException;
import org.apache.log4j.Logger;

public abstract class DBConnectionDAO {
public static Connection getConnection() {
    String stringConnection = "jdbc:mysql://localhost:3306/database_tai_khoan?user=root&password=password&characterEncoding=UTF-8";
    Connection conn = null;
    try {
        Class.forName("com.mysql.jdbc.Driver");
        // Open connection
        conn = DriverManager.getConnection(stringConnection);
    } catch (ClassNotFoundException e) {
        System.err.println("Class not found! Please review your library");
    } catch (SQLException e) {
        e.printStackTrace();
        System.err.println("Loi truy van");
    }
    return conn;
}
final static Logger logger = Logger.getLogger(DBConnectionDAO.class);

public static void main(String[] args) {

    DBConnectionDAO obj = new DBConnectionDAO() {};
    obj.runMe("hongson");

}

private void runMe(String parameter){

    if(logger.isDebugEnabled()){
        logger.debug("This is debug : " + parameter);
    }

    if(logger.isInfoEnabled()){
        logger.info("This is info : " + parameter);
    }

    logger.warn("This is warn : " + parameter);
    logger.error("This is error : " + parameter);
    logger.fatal("This is fatal : " + parameter);

}

}

score 0 · Answer 1 · edited May 23 '17 at 12:05

0

Which version of log4j are you using? Did you configure log4.xml or log4j.properties?

You can check this links in order to configure the log:

Creating multiple log files of different content with log4j: this link has a good example using more than one file to log and to log just some classes.
Log4j Configuration Using Properties File

You also might see the Log4j documentation page in order to understand the appenders.

edited May 23 '17 at 12:05

Community

1
1

answered Nov 14 '14 at 02:08

dansouza

111
5

Thanks bro, now i've done configuring my javaweb and database. But now i cant output logging file ( just output to console ) .Here is my problem : http://stackoverflow.com/questions/26921579/logging-activity-using-apache-log4j – Hồng Sơn Nov 14 '14 at 03:14
Have you got this kind of warning? log4j:WARN No appenders could be found for logger. log4j:WARN Please initialize the log4j system properly. If yes, did not initiate log4j properly. You can dig on this post: http://stackoverflow.com/questions/1140358/how-to-initialize-log4j-properly – dansouza Nov 14 '14 at 03:24
No i dont receive any warning. It looks still ok without any warning. It just output to console but not output to a file Should i edit the log4j-properties anymore? – Hồng Sơn Nov 14 '14 at 04:05

How to logging an activity on my project

1 Answers1