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

Class SubstrStrategy

java.lang.Object

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

All Implemented Interfaces:

Strategy

public class SubstrStrategy
extends Object
implements Strategy

字符截取策略
根据参数从输入数据中截取指定长度的字符

Version:

1.0.0

Author:

yishui

Constructor Summary

Constructors

Constructor and Description
SubstrStrategy()

Method Summary

Modifier and Type	Method and Description
String	extract(String input, String param1, String param2) 根据参数从输入数据中截取指定长度的字符

Methods inherited from class java.lang.Object

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

Constructor Detail

SubstrStrategy

public SubstrStrategy()

Method Detail

extract

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

根据参数从输入数据中截取指定长度的字符

Specified by:

extract in interface Strategy

Parameters:

input - 输入数据

param1 - 第一个参数，必填，必须为数字，开始截取的位置

param2 - 第二个参数 ，必填，必须为数字，结束截取的位置

Returns:

输出数据，注意可能是null或空字符串