A program used to search for a class in a bunch of zip/jar files

Author:Sonymusic Title:One is used to search for a class in a bunch of zip/jar filesProgram Keywords:Java zip search Category:ExampleCode Confidentiality level:Public (Score:, reply: 0, read: 142 )»»

Reprinted at will, but please indicate the source and author Sonymusic 2003.05.28 ========================================================== ======================================== A program used to search for a class in a bunch of zip/jar files Package Sony. utils; Import java. util. Jar .*; Import java.util.zip .*; Import java. util .*; Import java. Io .*; /** * @ Author sonymusic * * Very simple, but it may be useful for finding a class in all the zip/jar files in the specified directory. <br> * At least I think it is useful. Sometimes it is difficult to find a class in the JRun pile of. Jar files. <Br> * <B> usage: </B> JAVA Sony. utils. findclass basedir classname */ Public class findclass { Public static void main (string [] ARGs ){ If (ARGs. length! = 2 ){ Printuseage (-1 ); Return; } File base = new file (ARGs [0]); If (! Base. exists ()){ System. Out. println ("base dir not exist! "); Printuseage (-2 ); } If (! Base. isdirectory ()){ System. Out. println ("base DIR is a file! "); Printuseage (-3 ); } List ziplist = getsubjarfiles (base ); Zipfile zfile = NULL; Try { Int fcount = 0; For (INT I = 0; I <ziplist. Size (); I ++ ){ Zfile = new zipfile (File) ziplist. Get (I )); Enumeration Enum = zfile. Entries (); While (enum. hasmoreelements ()){ Zipentry ze = (zipentry) enum. nextelement (); If (matchentry (Ze, argS [1]) { System. Out. println ("found in zip/JAR file:" + zfile. getname () + "\ tfilename:" + Ze. getname ()); ++ Fcount; Break; } } } If (fcount = 0 ){ System. Out. println ("Not found. Maybe basedir or classname is not correct ."); Printuseage (0 ); } Else { System. Out. println ("found" + fcount + "zip/JAR file (s )"); } } Catch (exception e ){ E. printstacktrace (); Printuseage (-10 ); } } Private Static void printuseage (INT retstatus ){ System. Out. println ("useage: Java Sony. utils. findclass basedir classname "); System. Out. println ("\ tbasedir: where you want to find. e.g. D: \ WEB \ Web-INF \ Lib "); System. Out. println ("\ tclassname: waht you want to find. e.g. httpservlet "); System. Out. println (); System. Exit (retstatus ); } Private Static list getsubjarfiles (File basedir ){ List ret = new arraylist (); // File base = new file (basedir ); File [] TMP = basedir. listfiles (filefilter ); For (INT I = 0; I <TMP. length; I ++ ){ If (TMP [I]. isfile ()){ Ret. Add (TMP [I]); } If (TMP [I]. isdirectory ()){ Ret. addall (getsubjarfiles (TMP [I]); } } Return ret; } Private Static Boolean matchentry (zipentry Ze, string classname ){ Stringtokenizer ST = new stringtokenizer (ze. getname (),"/"); String filename = NULL; While (St. hasmoretokens ()){ Filename = ST. nexttoken (); } If (filename. Equals (classname + ". Class ")){ Return true; } Else return false; } Private Static filefilter = new filefilter (){ Public Boolean accept (File pathname ){ String TMP = pathname. getname (). tolowercase (); If (TMP. endswith (". Jar") | TMP. endswith (". Zip ")){ Return true; } Return false; } }; }