How to set up java logging using a properties file java util logging

Question

I have a stupid java logging problem  I m loading the logging configuration from my app configuration file - but it just doesn t log anything after reading the file  which looks pretty much like the examples you will find on the net except for the additional application configuration - removing this also doesn t help   The  initializing     log line appears just fine  but the  starting app  and any further messages are neither logged to the console  nor is the logfile ever created  What am I missing here   The Logger code looks like this       Logger log   Logger getLogger  myApp    log setLevel Level ALL   log info  initializing - trying to load configuration file         Properties preferences   new Properties    try       FileInputStream configFile   new FileInputStream   path to app properties        preferences load configFile       LogManager getLogManager   readConfiguration configFile     catch  IOException ex        System out println  WARNING  Could not open configuration file        System out println  WARNING  Logging not configured  console output only       log info  starting myApp          And this is the configuration file   appconfig1   foo appconfig2   bar    Logging handlers   java util logging FileHandler  java util logging ConsoleHandler  level   ALL    File Logging java util logging FileHandler pattern    h myApp log java util logging FileHandler formatter   java util logging SimpleFormatter java util logging FileHandler level   INFO    Console Logging java util logging ConsoleHandler level   ALL

User · Accepted Answer

Okay  first intuition is here   handlers   java util logging FileHandler  java util logging ConsoleHandler  level   ALL   The Java prop file parser isn t all that smart  I m not sure it ll handle this   But I ll go look at the docs again      In the mean time  try   handlers   java util logging FileHandler java util logging ConsoleHandler level   ALL     Update  No  duh  needed more coffee   Nevermind   While I think more  note that you can use the methods in Properties to load and print a prop-file  it might be worth writing a minimal program to see what java thinks it reads in that file     Another update  This line       FileInputStream configFile   new FileInputStream   path to app properties       has an extra end-paren   It won t compile   Make sure you re working with the class file you think you are

User · Answer

Logger log   Logger getLogger  myApp    log setLevel Level ALL   log info  initializing - trying to load configuration file           Properties preferences   new Properties    try         FileInputStream configFile   new   FileInputStream   path to app properties          preferences load configFile       InputStream configFile   myApp class getResourceAsStream  app properties        LogManager getLogManager   readConfiguration configFile     catch  IOException ex        System out println  WARNING  Could not open configuration file        System out println  WARNING  Logging not configured  console output only       log info  starting myApp      this is working     you have to pass InputStream in readConfiguration

User · Answer

you can set your logging configuration file through command line        java -Djava util logging config file  path to app properties MainClass   this way seems cleaner and easier to maintain

User · Answer

Are you searching for the log file in the right path     h one u log    Here  h resolves to your home   In windows this defaults to   C  Documents and Settings user name    I have tried the sample code you have posted and it works fine after you specify the configuration file path  logging properties either through code or java args

User · Answer

I have tried your code in above code don t use   preferences load configFile    statement and it will work here is running sample code  public static void main String  s         Logger log   Logger getLogger  MyClass        try       FileInputStream fis    new FileInputStream  p properties        LogManager getLogManager   readConfiguration fis       log setLevel Level FINE       log addHandler new java util logging ConsoleHandler         log setUseParentHandlers false        log info  starting myApp        fis close                catch IOException e        e printStackTrace

[java] How to set up java logging using a properties file? (java.util.logging)

Examples related to java

Examples related to logging