Jmeter json提取并删除重复项以写入文件

Question

import com.jayway.jsonpath.JsonPath

def path = vars.get("BaseFilePath") + "/" + vars.get("FhirVersion") + "/Get/Patient/";
def newLine = System.getProperty('line.separator')
def response = prev.getResponseDataAsString()

//address
def addressCSV = new File(path + 'address.csv')
def addressList = []
def addressCityCSV = new File(path + 'address-city.csv')
def cityList = []
def addressCountryCSV = new File(path + 'address-country.csv')
def countryList = []
def addressPostalCodeCSV = new File(path + 'address-postalcode.csv')
def postalCodeList = []
def addressStateCSV = new File(path + 'address-state.csv')
def stateList = []

def addressArray = JsonPath.read(response, '$..address')
addressArray.each { eachAddress ->
    eachAddress.each { subAddress ->
        subAddress.get('line').each { line ->
            addressList.add(line)
        }
		
		cityList.add(subAddress.get('city'))
		stateList.add(subAddress.get('state'))
		postalCodeList.add(subAddress.get('postalCode'))
		countryList(subAddress.get('country'))				
    }

addressList.unique().each { address ->
	addressCSV << address << newLine 
	}
cityList.unique().each { city ->
	addressCityCSV << city << newLine 
	}
countryList.unique().each { country ->
	addressCountryCSV << country << newLine
	}
postalCodeList.unique().each { postalCode ->
	addressPostalCodeCSV << postalCode << newLine
	}
stateList.unique().each { state ->
	addressStateCSV << state << newLine
	}
}

我在jmeter的JSR223后处理器中编写了此脚本，以从json响应中提取数据，addressList，cityList和其他列表包含重复元素，因此我想删除重复项并将唯一值推送到文件中。 但是此代码不起作用。有人可以帮我解决这个问题

Answer 1

要仅保留唯一值，请使用Set

  

我们可以使用toSet（）函数将List转换为Set。

因此您可以将其添加到相关列表中，如下所示：

 uniqueStateCSVSet = addressStateCSV.toSet()

或预定义为

 Set addressArray

Answer 2

调用Collection.unique()函数应该可以解决问题，即

addressList = addressList.unique()

演示：

但是，如果您的集合包含自定义对象（即不正常的Strings），则需要提出一个特殊的Comparator实现，即

def myComparator = [
        equals: { delegate.equals(it) },
        compare: { source, target ->
            source.someField <=> target.someField
        }
] as Comparator

def unique = addressList.unique(myComparator)

有关更多Groovy技巧和窍门，请参见The Groovy Templates Cheat Sheet for JMeter