log4j

在mvn test时，log4j一起起不来，log message打不出来 原因： log4j.properties 文件没不存在，或存在，但放错路径 解：把log4j.properties放入mvn 默认的resources跑路径下面：./src/main/resources/ 来源： https://my.oschina.net/hcp/blog/3129324

I struggle a bit with JBoss AS7 and the logging. I cannot find anything related on the web despite the fact that my issue is a very general one. The default log looks currently like this: 11:57:29,950 INFO [stdout] (http--0.0.0.0-8081-78) 248408930 [http--0.0.0.0-8081-78] INFO org.apache.http.impl.client.DefaultHttpClient - I/O exception (java.net.SocketException) caught when processing request: Connection reset 11:57:29,950 INFO [stdout] (http--0.0.0.0-8081-78) 248408930 [http--0.0.0.0-8081-78] INFO org.apache.http.impl.client.DefaultHttpClient - Retrying request notice the [stdout], those

I need to save the output of df.show() as a string so that i can email it directly. For ex., the below example taken from official spark docs,: val df = spark.read.json("examples/src/main/resources/people.json") // Displays the content of the DataFrame to stdout df.show() // +----+-------+ // | age| name| // +----+-------+ // |null|Michael| // | 30| Andy| // | 19| Justin| // +----+-------+ I need to save the above table as a string which is printed in the console. I did look at log4j to print the log, but couldnt come across any info on logging only the output. Can someone help me with it?

I want to log the IP address of the client who is calling my WS. How can I do that on JBoss? EDIT: I would like to use log4J configuration on JBOSS if possible. Sasi Append the following to your conversion pattern parameter in log4j configuration xml. %X{RemoteAddress} And in your code you can log the ip address as follows: MDC.put("RemoteAddress", request.getRemoteAddr()) Read this , in case you are provind functionality via EJB3. 来源： https://stackoverflow.com/questions/3346365/how-to-log-ip-address-on-jboss

I´m trying to configure a custom log using spark-submit, this my configure: driver: -DlogsPath=/var/opt/log\ -DlogsFile=spark-submit-driver.log\ -Dlog4j.configuration=jar:file:../bin/myapp.jar!/log4j.properties\ spark.driver.extraJavaOptions -> -DlogsPath=/var/opt/log -DlogsFile=spark-submit-driver.log -Dlog4j.configuration=jar:file:../bin/myapp.jar!/log4j.properties executor: -DlogsPath=/var/opt/log\ -DlogsFile=spark-submit-executor.log\ -Dlog4j.configuration=jar:file:../bin/myapp.jar!/log4j.properties\ spark.executor.extraJavaOptions -> -DlogsPath=/var/opt/log -DlogsFile=spark-submit