1. A method of extracting web page information, the method comprising: under control of one or more processors configured with executable instructions: analyzing a document object model (DOM) structure of a sample page to obtain a position of information to be extracted in the DOM structure; rendering a node corresponding to the position of the information to be extracted in the DOM structure as a target node, starting from the target node, traversing relative position information that has been obtained in advance to obtain a node and to determine whether the node is a root node, if not, continuing recursively to find another node until the root node is found to create candidate paths, and rendering the candidate paths obtained from the target node to the root node as a path set; analyzing a DOM structure of a page to be extracted, locating the information to be extracted in the DOM structure of the page to be extracted using a path starting from the root node in the path set, and obtaining a node corresponding to the position of the information to be extracted in the DOM structure of the web page to be extracted as an extracted node candidate set; and selecting a node having the highest robustness from the extracted node candidate set to be a final extracted node and obtaining extracted information using the extracted node.