I am using something like this as command line:
$ ./findbugs -textui -userPrefs edu.umd.cs.findbugs.core.prefs -progress\ -maxHeap 1500 -nested:false -output results/outputfile.html -effort:max\ -low -sortByClass **-html:fancy.xsl** -auxclasspath servlet-api.jar\ -auxclasspath selenium-server-standalone-2.43.0.jar\ -auxclasspath commons-lang-2.6.jar ~/Downloads/bodgeit-master
The options can be used to generate HTML output.
You can also use a simple utility called unionBugs to collect all bugs found in different sub-projects, which take arguments output file name with "-output" switch followed by any number of xml files. Steps:
1. Go to bin subdirectory in Findbugs directory
2. Run ./unionBugs -output <output_file_name.xml> inputfile1 inputfile2 ... inputfilen
3. Later, run a command convertXmlToText to transform XML into HTML file.
./convertXmlToText -longBugCodes -html <input_file1.xml> <output_file.html>