us.codecraft.webmagic.selector

Class CssSelector

java.lang.Object

us.codecraft.webmagic.selector.BaseElementSelector

us.codecraft.webmagic.selector.CssSelector

All Implemented Interfaces:

ElementSelector, Selector

public class CssSelector
extends BaseElementSelector

CSS selector. Based on Jsoup.

Since:

0.1.0

Author:

code4crafter@gmail.com

Constructor Summary

Constructors

Constructor and Description
CssSelector(java.lang.String selectorText)
CssSelector(java.lang.String selectorText, java.lang.String attrName)

Method Summary

Modifier and Type	Method and Description
protected java.lang.String	getText(org.jsoup.nodes.Element element)
boolean	hasAttribute()
java.lang.String	select(org.jsoup.nodes.Element element) Extract single result in text. If there are more than one result, only the first will be chosen.
org.jsoup.nodes.Element	selectElement(org.jsoup.nodes.Element element)
java.util.List<org.jsoup.nodes.Element>	selectElements(org.jsoup.nodes.Element element)
java.util.List<java.lang.String>	selectList(org.jsoup.nodes.Element doc) Extract all results in text.

Methods inherited from class us.codecraft.webmagic.selector.BaseElementSelector

select, selectElement, selectElements, selectList

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

CssSelector

public CssSelector(java.lang.String selectorText)

CssSelector

public CssSelector(java.lang.String selectorText,
                   java.lang.String attrName)

Method Detail

getText

protected java.lang.String getText(org.jsoup.nodes.Element element)

select

public java.lang.String select(org.jsoup.nodes.Element element)

Description copied from interface: ElementSelector

Extract single result in text.
If there are more than one result, only the first will be chosen.

Parameters:

element - element

Returns:

result

selectList

public java.util.List<java.lang.String> selectList(org.jsoup.nodes.Element doc)

Description copied from interface: ElementSelector

Extract all results in text.

Parameters:

doc - element

Returns:

results

selectElement

public org.jsoup.nodes.Element selectElement(org.jsoup.nodes.Element element)

Specified by:

selectElement in class BaseElementSelector

selectElements

public java.util.List<org.jsoup.nodes.Element> selectElements(org.jsoup.nodes.Element element)

Specified by:

selectElements in class BaseElementSelector

hasAttribute

public boolean hasAttribute()

Specified by:

hasAttribute in class BaseElementSelector