您可以使用WebElement.getText（）函数获取两个阶段名称的时间戳，然后使用TimeCategory类计算差值：

def uploaded = uploaded_web_element.getText()
def validated = validated_web_element.getText()

def uploaded_date = Date.parse('dd/MM/yy hh:mm:ss', uploaded)
def validated_date = Date.parse('dd/MM/yy hh:mm:ss', validated)

use(groovy.time.TimeCategory) {
    def duration = validated_date - uploaded_date
    WDS.log.info("Elapsed: ${duration.seconds} seconds")
}

有关JMeter中Groovy脚本的更多信息：Apache Groovy: What Is Groovy Used For?