JAVA JAUNT

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Example 9 : Searching using findEvery vs. Every Element that matchs the tagQuery is added to the Elements container, which is returned by the method. As discussed in the previous example, class Elements is a container for search results that is itself searchable.


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On line 6, The findEvery search is invoked on the document, so it retrieves every div Element in the document eight divs. The findEach String method line 9 retrieves only four divs, since it will not find the nested divs. The last findEach method line 12 is not invoked on the document object but rather on a particular Element. Example 10 : Searching using getElement and getEach, search method summary food. The getElement int method on line 6 retrieves the first child of the body element.

The results of the search four divs are then printed. Search Method Summary: a table of search methods The following table summarizes the most important search methods covered in previous examples. Example 11 : Searching with regular expressions.

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In order for the query to match against an element, all parts of the query ie, the tagnameRegex, attribute name, attributeValueRegex and childTextRegex must match if they are specified. Otherwise, the tagnameRegex will be treated as case-insensitive and be evaluated against entire tagnames ie will not match substrings. Otherwise, the attributeName in the query is matched as a case-insensitive string, not as a regular expression.

If attributeValueRegex is present, it will be treated as case-insensitive and be evaluated against the entire corresponding attribute value ie will not match substrings. Otherwise, childTextRegex will be evaluated against the concatenation of Text children of the Element. It's important to note that the childTextRegex is case sensitive and will match against substrings.

Example 12 : Filling-out form fields in sequence using Document. Using the Form component see example 15 is a convenient way to fill-out and submit a specific form on a page such as when a page contains more than one editable form. The present example uses the Document object to skip the step of identifying the form when there is only one editable form on the page. It allows the user to fill-out editable fields by specifying a sequence of input values. The input values are applied starting with the first field eg textfield, radiobutton, checkbox, menu, etc , or starting at whichever field currently has focus see the next example for altering focus.

On lines , the apply Object In this case, the sequence of inputs has the following effect: it fills-out the textfield with tom mail. On line 11, the submit button is pressed, which submits the form that was filled out and on line 12, the url of the followup page is printed, using getLocation. It is worth noting that Form objects also have their own apply Object So in a similar fashion, a sequence of inputs can be applied to a specific form ie, not necessarily the first one.

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Example 13 : Filling-out form fields by label with the Document object textfields, password fields, checkboxes. Anytime a specific form field is filled-out, the focus automatically moves to the next visible field in the same form. Since focus automatically moves to the next field, the method apply Obect On lines 5 and 6, the filloutField String, String method of the document is called, which is used for filling out textfields, password fields, and textarea fields. The first argument is a case-insensitive and spacing-insensitive String used to match the text label to the left of the fields.

The second argument is the value to be entered into the field.

On line 7, the chooseCheckBox short, String method is called to check the checkboxe. The first parameter is a case-insensitive and spacing-insensitive String for matching the text of the label.

Java EE для начинающих. Урок 6: URL параметры GET - запроса.

The second parameter specifies the orientation of the label relative to the checkbox. On line 8, the submit button is pressed, which submits the form. If there is more than one form on the page, the 'active' form is submitted. The active form is determined by the first field to be filled out. Once a particular form is active, attempting to fill out an input from a different form causes a NotFound Exception to be thrown. A MultipleFound Exception is thrown if the specified label text matches more than one label of the active form. On line 9, the url of the followup page is printed, using getLocation.


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  4. The chooseMenuItem method line 7 is used to select menu items or menulist items, though it does not support making multiple selections from a menulist. The filloutField method lines 6 and 8 has been previously covered, though here we see it used with a texarea field. The chooseRadioButton method on line 9 is used to select a radio button. On line 10, the form is submitted by specifying the label of the submit button submit String.

    The functionality is important when the form has more than one submit button; otherwise, the method submit would suffice. Specifying a label that does not match a submit button of the active form results in a NotFound Exception, which is a subclasses of JauntException caught on line Example 15 : Filling-out form fields by name with the Form object textfields, password fields, checkboxes, menus, textareas, radiobuttons. Through the form compoment, each field can be accessed by its name ie, the value of the name attributes.

    A form component can be obtained from the document object in a variety of ways, including by specifying the index of the form as on line 5 , or by using the Document's search methods to find a form on the basis of its button text or by using a search query, eg: userAgent. On lines , input field of various types are identified by their case insensitive names and filled out with specific values. The setSelect String, String operation on line 9 is used to set a dropdown menu or selection list to a single value, however it can be called more than once to make multiple selections in a selection list where multiple selections are enabled.

    All the methods for setting values by name throw a NotFound Exception if input field's name cannot be matched. On line 12, the form object is submitted by specifying the label of the submit button submit String. Specifying the submit button is important when the form has more than one or when the submit button contributes a name-value pair required by the application; otherwise, the method submit would suffice.

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    Example 16 : Generating a form's request permutations. In this case, the form is a search interface for a movie database. Being able to generate a comprehensive list of request objects for the search form is a simpler and faster solution than laboriously changing each field one at a time after each form submition. On line 4, the Form object is retrieved by the form's name, and in the next three lines permutation targets are added.

    Each permutation target identifies a specific form field by its name and defines all the possible values through which it should be permuted.

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    In some cases, the possible values are by definition embedded as part of the component such as menus, radiobuttons, and checkboxes. In other cases such as texfields, password fields, and textareas the permutation values need to be specified, since there are an unlimited number of possible inputs. In such cases the permutation values are provided in a String array, as on line 5, where the textfield is set to be permuted through the search terms 'cat' and 'dog'.

    For additional control, the form can be redefined at the DOM-level before defining permutation targets. For example, you may wish to remove the first entry of a dropdown menu, if it is simply a blank option, rather than have it generate a meaningless request permutation. Any DOM-level manipulatation must occur before the form is aquired through the document's getForm String method.

    Rather, rather it illustrates a technique for traversing a table. Example 18 : Table text extraction using the Table component. It can also be used to to extract text from two columns into a Map, where one column constitutes the keys of the Map and the second column constitutes the values. Note that the Document object provides a number of alternative ways exist to create a Table component in a single step, including Document.

    Regular expressions are matched against text using Matcher. Example 19 : Table cell extraction using the Table component. On line 4, a table component is aquired via an element query queries are covered in the examples on search methods. It can also be aquired by calling Document's getTable int method, which takes the table index as an argument indexing starts at zero and refers to non-nested tables.

    Example 20 : Pagination Discovery Example On line 3 the browser visits google. On line 6 the method nextPageLink is invoked, which returns a Hyperlink object. The hyperlink object represents a link to the next page of results page 2. On the next two lines, the browser follows the hyperlink and then prints the current location of the UserAgent. See also the related methods Document. This example illustrates visiting two urls, in each case extracting and printing the title of webpage.

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