us.codecraft.webmagic.selector

Class XpathSelector

java.lang.Object

us.codecraft.webmagic.selector.BaseElementSelector

us.codecraft.webmagic.selector.XpathSelector

All Implemented Interfaces:

ElementSelector, Selector

public class XpathSelector
extends BaseElementSelector

XPath selector based on Xsoup.

Since:

0.3.0

Author:

code4crafter@gmail.com

Constructor Summary

Constructors

Constructor and Description
XpathSelector(String xpathStr)

Method Summary

Modifier and Type	Method and Description
boolean	hasAttribute()
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)
List<org.jsoup.nodes.Element>	selectElements(org.jsoup.nodes.Element element)
List<String>	selectList(org.jsoup.nodes.Element element) 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

XpathSelector

public XpathSelector(String xpathStr)

Method Detail

select

public 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 List<String> selectList(org.jsoup.nodes.Element element)

Description copied from interface: ElementSelector

Extract all results in text.

Parameters:

element - element

Returns:

results

selectElement

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

Specified by:

selectElement in class BaseElementSelector

selectElements

public 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