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

Class XpathStrategy

java.lang.Object

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

All Implemented Interfaces:

Strategy

public class XpathStrategy
extends Object
implements Strategy

XPATH提取策略
根据参数按照XPATH方式从输入数据中提取出所有符合要求的数据

Version:

1.0.0

Author:

yishui

Constructor Summary

Constructors

Constructor and Description
XpathStrategy()

Method Summary

Modifier and Type	Method and Description
String	extract(String input, String param1, String param2) 根据参数按照XPATH方式从输入数据中提取出所有符合要求的数据

Methods inherited from class java.lang.Object

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

Constructor Detail

XpathStrategy

public XpathStrategy()

Method Detail

extract

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

根据参数按照XPATH方式从输入数据中提取出所有符合要求的数据

Specified by:

extract in interface Strategy

Parameters:

input - 输入数据

param1 - 第一个参数，必填，XPATH表达式

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