批量修改java文件编码(GBK->UTF-8)，带备份和恢复功能

非常适合转换老项目，或是从网上下载了GBK项目的源码
代码是网上找的，结合了一下：

#-*- coding: utf-8 -*-

import codecs
import os
import shutil
import re
import sys

def convert( filename, in_enc = "GBK", out_enc="UTF-8" ):
    shutil.copyfile(filename, filename + '.bak')

# read the file
    content = open( filename ).read()
# convert the concent
try:
        new_content = content.decode( in_enc ).encode( out_enc )
#write to file
        open( filename, 'w' ).write( new_content )
except:
print " error... "

def explore( dir ):
for root, dirs, files in os.walk( dir ):
for file in files:
if file.lower().endswith('.java'):
                path = os.path.join( root, file )
print "convert " + path,
                convert( path )
print " done"

def process_bak_files(action='restore'):
for root, dirs, files in os.walk(os.getcwd()):
for f in files:
if f.lower().endswith('.java.bak'):
                source = os.path.join(root, f)
                target = os.path.join(root, re.sub('\.java\.bak$', '.java', f, flags=re.IGNORECASE))
try:
if action == 'restore':
                        shutil.move(source, target)
elif action == 'clear':
                        os.remove(source)
except Exception, e:
print source

def main():
if len( sys.argv ) > 1 :
        path = sys.argv[1]
if os.path.isfile( path ):
            convert( path )
elif os.path.isdir( path ):
            explore( path )

if __name__ == "__main__":
#process_bak_files(action='clear')
    main() 

用法

python encode.py [path]