$ sudo vim /usr/lib/python2.7/site.py

def setencoding():
    """Set the string encoding used by the Unicode implementation.The
    default is 'ascii', but if you're willing to experiment, you can
    change this."""
    encoding = "utf-8" # 将默认编码改成utf-8即可
    if 0:
        # Enable to support locale aware default string encodings.
        import locale
        loc = locale.getdefaultlocale()
        if loc[1]:
            encoding = loc[1]
    if 0:
        # Enable to switch off string to Unicode coercion and implicit
        # Unicode to string conversion.
        encoding = "undefined"
    if encoding != "ascii":
        # On Non-Unicode builds this will raise an AttributeError...
        sys.setdefaultencoding(encoding) # Needs Python Unicode build !

$ sudo /etc/init.d/apache2 restart