XML (extensive markup language) path expression extracting method and device

Abstract

The invention discloses an XML path expression extracting method and device. The method comprises, step (1), setting limit conditions with a plurality of hierarchical relations and initializing the limit conditions of the lowest layer as current limit conditions; step (2), extracting the XML path expression of an element node to be identified under the current limit conditions; step (3), performing location according to the XML path expression, and if the XML path expression locates a unique element node, ending the XML path expression extraction; if not, namely, if the XML path expression locates more than one element nodes, selecting the limit conditions one layer above the current limit conditions as current limit conditions and re-executing the step (2). By means of the XML path expression which is as strict as possible, the XML path expression extracting method and device can reduce the possibility of XML path expression failures when web pages have small changes.

Description

technical field [0001] The present invention relates to the technical field related to XML, in particular to a method and device for extracting XML path expressions. Background technique [0002] XPath is a language for finding information in XML documents. XPath can be used to traverse element nodes and attributes in XML documents. XPath uses XML path expressions to select nodes or sets of nodes in an XML document. These XML path expressions are very similar to the expressions we see in regular computer file systems. [0003] In web page automation testing, the xpath method is often used to locate element nodes, and then operate on the located element nodes. For example, locate a button through xpath, and then automatically trigger the button to be clicked; another example, locate a text box through xpath, and then automatically assign a value to the text box. [0004] The existing method of obtaining an XML path expression is to start from the specified element node, o...

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Problems solved by technology

[0009] However, the XML path expression for extracting element nodes in the prior art is usually not stable enough. When a small change occurs in the layout of the web page, the original XML path expression is likely to be invalid, and the invalid XML path expression cannot be found. to the element node or find the wrong element node

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