我正在位於象夫維基斯塔特象夫導購中,COMAND繼成功編譯:Mahout movieLens推薦器,輸出文件在哪裏?
mvn exec:java -Dexec.mainClass="org.apache.mahout.cf.taste.example.grouplens.GroupLensRecommenderEvaluatorRunner" -Dexec.args="-i ratings.dat"
我看到這個日誌文件,但沒有找到任何輸出:
[INFO] Scanning for projects...
[INFO] Searching repository for plugin with prefix: 'exec'.
[INFO] ------------------------------------------------------------------------
[INFO] Building Mahout Examples
[INFO] task-segment: [exec:java]
[INFO] ------------------------------------------------------------------------
[INFO] Preparing exec:java
[INFO] No goals needed for project - skipping
[WARNING] POM for 'asm:asm:pom:3.1:compile' is invalid.
Its dependencies (if any) will NOT be available to the current build.
[INFO] [exec:java {execution: default-cli}]
SLF4J: Failed to load class "org.slf4j.impl.StaticLoggerBinder".
SLF4J: Defaulting to no-operation (NOP) logger implementation
SLF4J: See http://www.slf4j.org/codes.html#StaticLoggerBinder for further details.
[INFO] ------------------------------------------------------------------------
[INFO] BUILD SUCCESSFUL
[INFO ] ------------------------------------------------- ----------------------- [INFO] Total time:20 seconds [INFO] Finished at:Fri Jan 04 04:47:33 PST 2013 [INFO] Final Memory:31M/697M [INFO] -------------------------- ----------------------------------------------
日誌/輸出在哪裏?我怎樣才能啓用日誌? 建議在哪裏?難道我做錯了什麼?