![]() ![]() Later examples will demonstrate handling HTTP/connection errors separately from search-related errors. Note that in this example we catch JauntException, which is the superclass of all other Jaunt-related Exceptions. Example 11 provides a full account of the tagQuery syntax. For example, the query "" would match any h1 or h2 tag. Which provides a powerful syntax for pattern matching. As we'll see in later examples, the tagname portion of the query is actually a regular expression, It should be noted that the query "" will match any Element who's tagname is title (case insensitive), whether or not the element has additional attributes. The document's findFirst(String) method (lines 7 and 11) accepts a tagQuery that (in simple cases) resembles an HTML tag, and searches the document tree until it finds a matching element. See UserAgentSettings for all the settings of a UserAgent. Autosaving is useful in development and debugging, since LAST_VISITED.html can be checked with Chrome/Firefox/etc to examine the DOM structure. The related setting autoSaveAsXML can be used to save the document in XML format rather than HTML. On line 4 autosaving is enabled, which means that anytime a page is visited it will be autosaved as LAST_VISITED.html in the directory specified by settings.outputPath. This example illustrates visiting two urls, in each case extracting and printing the title of webpage. If your IDE supports it, configure javadoc integration (eg, in your Eclipse project, configure java build path, expand the entry for the jar file, select the path to the javadocs folder). ![]() Include the jar file in your classpath/project, at which point you will be able to recompile and/or run the example files. The zip file contains the licensing agreement, javadocs documentation, example files, release notes, and a jar file (Java 1.6). To begin using Jaunt, download and extract the zip file. For lower-level, work, the UserAgent provides access to HTTP Requests and Responses and the ability to manage cookies. For example, the class Form and Table provide convenience methods for submitting forms and extracting data from tables. ![]() In addition to exposing the DOM, the Document also provides high-level utility classes for webscraping. The parser automatically corrects malformed tags and converts relative urls to absolute urls but does not otherwise alter the document structure. When creating the Document, the UserAgent may encounter malformed HTML/XML. The children can be Text Nodes, Comment Nodes, or other Elements. Or more attributes (such as ) and zero or more child Nodes. For example, an HTML document has the following tree structure: it begins with the Element, who's child nodes are and Elements. The Document object exposes the content as a tree of Nodes, such as Element objects, Text objects, and Comment objects. When the UserAgent loads an HTML or XML page, it creates a Document object. The Jaunt package contains the class UserAgent, which represents a headless browser. ![]()
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