html頁(yè)面一般都會(huì)指定一個(gè)編碼，如何獲取到是處理html頁(yè)面的第一步，因?yàn)殄e(cuò)誤的編碼必然帶來(lái)后面處理的問(wèn)題。這里我用python的正則表達(dá)式寫了個(gè)：

import rea = ["<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />",   '<meta http-equiv=Content-Type content="text/html;charset=gb2312">',   '<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1">',   '<meta http-equiv="Content-Type" content="text/html; charset=gb2312" />',   '<meta http-equiv="content-type" content="text/html; charset=utf-8" />',   '<meta http-equiv="Content-Type" content="text/html; charset=gb2312" />',   '<meta http-equiv="Content-Type" content="text/html; charset=gb2312" />'   ]b = "<meta[ ]+http-equiv=["']?content-type["']?[ ]+content=["']?text/html;[ ]*charset=([0-9-a-zA-Z]+)["']?"B = re.compile(b, re.IGNORECASE)for ax in a:  r1 = B.search(ax)  if r1:    print r1.group()    print r1.group(1), len(r1.group())  else:    print 'not match'