使用命令行快速找出Class文件所在的Jar文件

由於jar命令去查找class文件速度比較慢，我個人嘗試使用7z.exe,7z.dll，結合批處理，效果非常不錯。

請看示例：

for %i in (dir/b/s *.jar) do 7z l %i | findstr XDatabase.class

結果：

D:\shared\xsql>for %i in (dir/b/s *.jar) do 7z l %i |findstr XDatabase.class    
    
D:\shared\xsql>7z l dir/b/s   | findstr XDatabase.class    
    
D:\shared\xsql>7z l db2jcc.jar   | findstr XDatabase.class    
    
D:\shared\xsql>7z l db2jcc_license_cu.jar   | findstr XDatabase.class    
    
D:\shared\xsql>7z l jconn3.jar   | findstr XDatabase.class    
    
D:\shared\xsql>7z l jodbc.jar   | findstr XDatabase.class    
    
D:\shared\xsql>7z l jTDS3.jar   | findstr XDatabase.class    
    
D:\shared\xsql>7z l mlscript.jar   | findstr XDatabase.class    
    
D:\shared\xsql>7z l msbase.jar   | findstr XDatabase.class    
    
D:\shared\xsql>7z l mssqlserver.jar   | findstr XDatabase.class    
    
D:\shared\xsql>7z l msutil.jar   | findstr XDatabase.class    
    
D:\shared\xsql>7z l MySQL-connector-Java-5.1.6-bin.jar   | findstr XDatabase.class    
    
D:\shared\xsql>7z l ojdbc14.jar   | findstr XDatabase.class    
    
D:\shared\xsql>7z l postgresql-8.4-701.jdbc4.jar   | findstr XDatabase.class    
    
D:\shared\xsql>7z l sqlite.jar   | findstr XDatabase.class    
    
D:\shared\xsql>7z l sqlitejdbc-v056-zentus.jar   | findstr XDatabase.class    
    
D:\shared\xsql>7z l sqljdbc.jar   | findstr XDatabase.class    
    
D:\shared\xsql>7z l ULjDatabaseTransfer.jar   | findstr XDatabase.class    
    
D:\shared\xsql>7z l UltraLiteJ.jar   | findstr XDatabase.class    
    
D:\shared\xsql>7z l UltraLiteJ12.jar   | findstr XDatabase.class    
    
[b]D:\shared\xsql>7z l xsql.jar   | findstr XDatabase.class    
2010-12-24 21:05:40 .....        30863        14443  [/b]com\sean\db\XDatabase.class 

最末一行展示的是最終結果。

將上述邏輯寫成批處理：

@echo off    
SETLOCAL    
    
set WHICH_CLASS=%1    
echo WHICH_CLASS=%WHICH_CLASS%    
    
for /F %%i in ('dir /A:-D /S /B *.jar') do 7z l %%i | findstr %WHICH_CLASS% && echo %WHICH_CLASS% found in: "%%i"    
echo "Finished class finding..."    
echo "======================================"    
ENDLOCAL   

運行一下命令：

findclass com\\Sybase\\afx\\util\\StringUtil.class   
WHICH_CLASS=com\\Sybase\\afx\\util\\StringUtil.class   
2012-02-27 13:14:36 .....        15230         5915  com\Sybase\afx\util\StringUtil.class   
com\\Sybase\\afx\\util\\StringUtil.class found in: "U:\target\lib\ext\sup-clIEnt.jar"   
2012-02-27 13:14:36 .....        15230         5915  com\Sybase\afx\util\StringUtil.class   
com\\Sybase\\afx\\util\\StringUtil.class found in: "U:\target\lib\ext\sup-server-rt.jar"   
"Finished class finding..."   
"======================================" 

很容易得到最終結果。如果時間充分，我們甚至可以修改7z的源碼，讓它直接列出文件的全路徑，那樣，直接使用7z就可以找到最終文件了。