如何解析 sample1 的响应以在 JMeter 中创建新样本

问题描述

我使用 JMeter 做 Web 服务器的性能测试.我的测试用例如下:

I use JMeter to do performance test of web server. My test case is as following:

step1: send file update request to server.
step2: server will return some files URL as html response
step3: client need to create new request with the URL returned in step2,thus need to parse 
the response of step2.

我是 JMeter 的新手，不知道如何实现它.JMeter的前处理器和后处理器基本都学过，但是还是不知道怎么做.

I am new to JMeter, and do not know how to implement it. I basically learned JMeter about the pre-processor and post-processor, but still no clue about how to do.

推荐答案

好的，先开始第一步吧:

Ok let's start before the first step :

右击->添加 ->线程(用户)->线程组

• 现在是实际的第一步(如果您使用 REST):

添加 ->采样器 ->Http请求

您在底部随请求发送文件.如果这是您的要求，您可以添加文件附件.

You have at the bottom part Send Files With the Request. You can add file attachment if that is what you asked.

• 从服务器提取响应:

假设您的回复是这样的:

Let's assume your response is this :

<Response>
  <name>StackOverflow.com</name>
  <url>http://stackoverflow.com/questions/11186423/how-to-parse-response-of-sample1-to-create-new-sample-in-jmeter</url>
</Response>

这是你要做的:

右键单击您之前添加的 http 请求(在步骤 1 中)->后处理器 ->Xpath 提取器

Reference Name 是要在其中存储值的变量的名称.我们将其命名为 url.而 Xpath query 是 Response/url 或 //Response/url 如果你得到更多的响应标签.如果你想要第一个 //Response[1]/url 等等..

Reference Name is the name of the variable in which you want to store the value. Let's name it url. And Xpath query is Response/url or //Response/url if you get more response tags. If you want the first one //Response[1]/url and so on..

• 重复第 1 步(复制/粘贴采样器并删除您不再需要的 Xpath Extractor)，并将 Server Name or IP 更改为 ${url} 这是之前返回的值.

• Repeat step 1 (copy/paste sampler and remove the Xpath Extractor you don't need it anymore), and change the Server Name or IP to ${url} which is the value previously returned.

瞧，你去吧.如果您有更具体的问题，请告诉我.Jmeter 很有趣.

And Voila there you go. Let me know if you got more specific questions. Jmeter is fun.

Per Grace 评论:

想提取https://192.168.100.46/updserver/download?action=signature_download&token=


响应数据不足:

<responseData class="java.lang.String">&lt;html&gt;&#xd;
&lt;body&gt;&#xd;
ERROR=0&#xd;
MSG=N/A&#xd;
FILELIST=1555;1340778737370;1526545487;&#xd;
VERSION=1.002&#xd;
URL=https://192.168.100.46/updserver/download?action=signature_download&amp;token=&#xd;
INTERVAL=0&#xd;
&lt;/body&gt;&#xd;
&lt;/html&gt;&#xd;
</responseData>

这应该很简单.添加后处理器 ->正则表达式提取器并输入以下内容:

This should be pretty simple. Add a post processor -> Regular Expression Extractor and put the following :

Reference Name : url 
Regular Expression : (http[S]+)
Template : $1$
Match No. (0 for Random): 1

所以现在你有了 url 变量，你可以在测试中进一步使用它作为 ${url}.让我知道这是否适合您.我用虚拟采样器进行了测试，它对我有用.

So now you have url variable that you can use further in your test as ${url}. Let me know if that works for you. I tested with dummy sampler and it works for me.

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