 class="s_input icon_key"
                                           placeholder="目录页目录名的正则表达式："></li>
                                示例：<b>http://m.xdingdiann.com/ddk{bookId}/{indexId}.html</b>
                                (bookId代表小说ID,{indexId}代表目录ID)
                                <li><input type="text" id="bookContentUrl" class="s_input icon_key"
                                           placeholder="小说内容页的URL规则："></li>
           