us.codecraft.webmagic.model.annotation

注释类型 ExtractByUrl

@Retention(value=RUNTIME)
 @Target(value=FIELD)
public @interface ExtractByUrl

Define a extractor to extract data in url of current page. Only regex can be used.

从以下版本开始:

0.2.0

作者:

code4crafter@gmail.com

可选元素概要

可选元素

限定符和类型	可选元素和说明
boolean	multi 已过时。 since 0.4.2
boolean	notNull Define whether the field can be null.
String	value Extractor expression, only regex can be used

元素详细资料

value

public abstract String value

Extractor expression, only regex can be used

返回:

extractor expression

默认值:

""

notNull

public abstract boolean notNull

Define whether the field can be null.
If set to 'true' and the extractor get no result, the entire class will be discarded.

返回:

whether the field can be null

默认值:

false

multi

public abstract boolean multi

已过时。 since 0.4.2

Define whether the extractor return more than one result. When set to 'true', the extractor return a list of string (so you should define the field as List).
Deprecated since 0.4.2. This option is determined automatically by the class of field.

返回:

whether the extractor return more than one result

默认值:

false