Javascript JMeter - 在用户变量上使用子字符串

JMeter - using substring on a user variable

提问by Joe Watkins

Using jmeter, I have a variable passed from CSV file (using CSV Data Set Config), and I'd like to use a substring of it in an http request.

使用 jmeter，我有一个从 CSV 文件（使用 CSV 数据集配置）传递的变量，我想在 http 请求中使用它的子字符串。

i.e. variable TIME=23:40, request paramaters are hour and minute, so I want to extract appropriate parts, in the HTTP Request.

即变量TIME=23:40，请求参数是小时和分钟，所以我想在HTTP请求中提取适当的部分。

I read you could use javascript, so for the hour, I tried ${TIME}.substring(0,2), which didn't look as though it would work, and sure enough it didn't.

我读到你可以使用 javascript，所以在这个小时里，我尝试了 ${TIME}.substring(0,2)，这看起来好像行不通，但果然行不通。

How do I do this?

我该怎么做呢？

回答by ant

You can do that by calling javascript function inline http://jmeter.apache.org/usermanual/functions.html

您可以通过内联调用 javascript 函数来做到这一点http://jmeter.apache.org/usermanual/functions.html

Ex :

前任 ：

${__javaScript('${TIME}'.substring(0\,2))}

Or

或者

1. create user defined variables sample
2. create variable called myTime(or anything you want)

3. create beanshell sampler, choose beanshell as language in it then:

   String tempTime = vars.get("myTime");
   String newTime = tempTime.substring(0,2);     
   vars.put("newTime", newTime);
   

1. 创建用户定义的变量示例
2. 创建名为 myTime 的变量（或任何你想要的）

3. 创建 beanshell 采样器，选择 beanshell 作为其中的语言，然后：

   String tempTime = vars.get("myTime");
   String newTime = tempTime.substring(0,2);     
   vars.put("newTime", newTime);
   

use ${newTime}variable in your request

${newTime}在您的请求中使用变量

Edited according to the other answer. Comma needs to be quoted.

根据另一个答案编辑。逗号需要引用。

回答by Andrei Botalov

You can do it without calling Javascript interpreter (Rhino) with substringfunction from JMeter plugins:

您可以在不使用JMeter 插件中的substring函数调用 Javascript 解释器（Rhino）的情况下执行此操作：

${__substring(${TIME}, 0, 2)}

回答by Andrei Botalov

Make sure you escape commas in javascript functions:

确保在 javascript 函数中转义逗号：

${__javaScript('${TIME}'.substring(0\,2))}