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

Class ScriptStrategy

java.lang.Object

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

All Implemented Interfaces:

Strategy

public class ScriptStrategy
extends Object
implements Strategy

脚本提取器
通过js脚本从输入参数中提取数据
示例脚本如下:

  var extractor = function(param) {
                return param;
  };
 

脚本中必须包含一个名字为 extractor的函数

Version:

1.0.0

Author:

yishui

Constructor Summary

Constructors

Constructor and Description
ScriptStrategy()

Method Summary

Modifier and Type	Method and Description
String	extract(String input, String param1, String param2) 通过js脚本从输入参数中提取数据

Methods inherited from class java.lang.Object

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

Constructor Detail

ScriptStrategy

public ScriptStrategy()

Method Detail

extract

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

通过js脚本从输入参数中提取数据

Specified by:

extract in interface Strategy

Parameters:

input - 输入数据

param1 - 第一个参数，必填，为js函数，必须有一个名字为 extractor 的函数

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