Webpage information detection method and system

A system for detecting information on a web page, including:

• a extracting device (11) configured to extract keywords from a web page;
• a storing device (12) configured to store a corresponding relationship between the extracted keywords and a URL of the web page in a database;
• an obtaining device (13) configured to obtain a source file of the web page;
• and
• a comparing device (14) configured to search the database for the keywords that have the same URL as that of the web page, to compare the searched keywords to the source file information of the web page and to determine that the web page exists according to a matching degree P;
• wherein the extracting device (11) is further configured to perform the steps of:
• (1) obtaining source file information of the web page,
• (2) extracting a main body text from the source file information, and
• (3) extracting the keywords from the main body text;
• and
• wherein step (1) comprises:
• emulating a HTTP request for returning an information status code, wherein if the code is not 200 or if something unusual occurs, the information of the web page will be deleted, otherwise, step (1) further comprises:
• obtaining a bit array and a coding format of the source file, and utilizing the obtained coding format to convert the obtained bit array of the source file into a character formatted source file.