JMeter-从JSON响应中提取'id'变量，并将其保存在CSV文件中，并在拆解线程中使用 [英] JMeter- extract 'id' variables from JSON response and save it in CSV file and use it in tear down thread

问题描述

在我的发帖请求中创建一个工作，其响应的唯一ID如下，

{"id":626}

我想将626的id值保存在csv或任何文件中，并且在测试完成后，我想使用此文件中的所有这些值来检查tear down线程组中作业的状态. /p>

如何完成此操作? 我有以下脚本，但出现错误，

new groovy.json.JsonSlurper().parse(prev.getResponseData()).id.each { entry ->
    new File('result.csv') << entry.get('id') << System.getProperty('line.separator')
}

错误详细信息，

2021-01-15 12:13:05,699 ERROR o.a.j.e.JSR223PostProcessor: Problem in JSR223 script, JSR223 PostProcessor
javax.script.ScriptException: groovy.lang.MissingMethodException: No signature of method: java.lang.Integer.get() is applicable for argument types: (String) values: [id]
Possible solutions: getAt(java.lang.String), next(), grep(), grep(java.lang.Object), wait(), abs()

解决方案

只需将entry.get('id')更改为entry，它应该可以工作:

new groovy.json.JsonSlurper().parse(prev.getResponseData()).id.each { entry ->
    new File('result.csv') << entry << System.getProperty('line.separator')
}

---

但是，如果您使用>当多个线程同时写入同一文件时，您可能会遇到一个竞争条件的1个线程因此，更防错的方法将是:

1. 将下一行添加到 user.properties 文件:

   sample_variables=id
   

2. 使用 JSON JMESPath Extractor 配置如下:

3. 使用 Flexible File Writer 将值写入到文件:

In my post request create a job whose response have only id as follow,

{"id":626}

And I want to save the id value which is 626 in a csv or any file and after my test complete I want use all these value from this file to check the status of the job in the tear down thread group.

how to complete this ? I have following script but getting error,

new groovy.json.JsonSlurper().parse(prev.getResponseData()).id.each { entry ->
    new File('result.csv') << entry.get('id') << System.getProperty('line.separator')
}

error details,

2021-01-15 12:13:05,699 ERROR o.a.j.e.JSR223PostProcessor: Problem in JSR223 script, JSR223 PostProcessor
javax.script.ScriptException: groovy.lang.MissingMethodException: No signature of method: java.lang.Integer.get() is applicable for argument types: (String) values: [id]
Possible solutions: getAt(java.lang.String), next(), grep(), grep(java.lang.Object), wait(), abs()

解决方案

Just change entry.get('id') to just entry and it should work:

new groovy.json.JsonSlurper().parse(prev.getResponseData()).id.each { entry ->
    new File('result.csv') << entry << System.getProperty('line.separator')
}

---

However there is a potential problem with your approach, if you run your script with > 1 thread you may run into a race condition when multiple threads will be concurrently writing into the same file so more error-proof approach would be:

1. Add the next line to user.properties file:

   sample_variables=id
   

2. Extract the id from the response using JSON JMESPath Extractor configured like:

3. Use Flexible File Writer to write the value(s) to the file:

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