7. A device for posting microblog message on a network, comprising: a memory storing a set of program codes; and a processor configured to invoke the set of program codes to: receive text content and a posting operation instruction input by a user; acquire text content input by the user; calculate the number of characters of the text content; monitor the posting operation instruction for the text content of the user; store a preset threshold; determine whether the number of the characters of the text content exceeds the preset threshold; convert the text content into a format of messages, including the format of a picture, according to a user selection from a plurality of format settings, if the number of the characters of the text content exceeds the preset threshold, and post the converted format of messages received as a microblog message on the network.
10. The device according to claim 7 , wherein the set of program codes is invoked by the processor to determine whether converting the text content into a format of messages according a user selection.