Clears all cached data.

Fills the specified data model with the current skin's (WebRoot/skins/${skinDirName}/lang/lang_xx_XX.properties) and core language (WebRoot/WEB-INF/cl

Builds pagination request with the specified path. @param path the specified path, "/{page}/{pageSize}/{windowSize}" @return pagination request json

Cleans the specified HTML. @param html the specified HTML @return html

Returns image URL of Qiniu image processing style with the specified width and height. @param imageURL the specified image URL @param width the sp

Checks the specified request is made from a mobile device. @param request the specified request @return {@code true} if it is, returns {@code false}

Checks whether the specified input is a non-negative integer. @param input the specified input @return {@code true} if it is, returns {@code false} o

Adds or updates the specified option. @param option the specified option @return option id @throws ServiceException

Gets published article count of a tag specified by the given tag id. @param tagId the given tag id @return published article count, returns {@code -1

Blog statistic view count +1. <p> If it is a search engine bot made the specified request, will NOT increment blog statistic view count. </p> <p> Ther

Gets an image URL randomly. Sees https://github.com/b3log/bing for more details. @return an image URL