com.yishuifengxiao.common.crawler.extractor.content.strategy.impl

Class ConstantStrategy

java.lang.Object

com.yishuifengxiao.common.crawler.extractor.content.strategy.impl.ConstantStrategy

All Implemented Interfaces:

Strategy

public class ConstantStrategy
extends Object
implements Strategy

常量提取策略
无论输入数据是什么，直接将设置的常量值作为输出数据输出

Version:

1.0.0

Author:

yishui

Constructor Summary

Constructors

Constructor and Description
ConstantStrategy()

Method Summary

Modifier and Type	Method and Description
String	extract(String input, String param1, String param2) 根据规则提取输入字符里的数据

Methods inherited from class java.lang.Object

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

Constructor Detail

ConstantStrategy

public ConstantStrategy()

Method Detail

extract

public String extract(String input,
                      String param1,
                      String param2)

根据规则提取输入字符里的数据

Specified by:

extract in interface Strategy

Parameters:

input - 输入数据

param1 - 第一个参数，设置的常量值

param2 - 第二个参数 ，此模式下该参数无效

Returns:

输出数据，注意可能是null或空字符串