字符串中取汉字

参见;simplate.net

System.out.println("中国abcdefg123456799".replaceAll("[^\u4E00-\u9FA5]", ""));
         System.out.println("中国abcdefg123456799".replaceAll("[\\w]", "").replaceAll("\\p{Punct}", ""));         
         String str = "http:中国//baidu.com";
         StringBuffer sb = new StringBuffer();
         for (int i = 0; i < str.length(); i++) {
             if ((str.charAt(i)+"").getBytes().length>1) {            	 
                 sb.append(str.charAt(i));
             }
         }
         System.out.println(sb);