Introduction to jmeter
Apache JMeter is a Java-based stress testing tool developed by the Apache organization. Used for stress testing software, it was originally designed for web application testing, but later expanded to other testing areas.
download
Download URL: Apache JMeter - Download Apache JMeter
Install
- Since Jmeter is a Java-based program, we must first install the Java environment if we want to use Jmeter. You can install JDK by yourself (currently the latest Jmeter5.1.1 requires Java8+, so it is recommended to install 1.8 or above)
- Unzip and download the zip, enter the directory apache-jmeter-5.1.1\bin, double-click ApacheJMeter.jar to open jmeter.
Use Jmeter to initiate an HTTP request
Request is in Json format
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Create a test plan: right click on the test plan -> Add -> Thread (User) -> Thread Group
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Right-click Thread Group -> Add -> Sampler -> HTTP Request
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Enter interface information: We used the packet capture tool to capture the interface of the blog garden to obtain the dynamics of the whole site. Taking this as an example, the interface is as follows
获取最新10条博客文章
Url: https://home.cnblogs.com/ajax/feed/recent
HTTP Method: Post
Request：
{
"feedListType":5,
"appId":"",
"pageIndex":1,
"groupId":""
}
Entry Information
4. Add an HTTP information header manager: store the Request Headers here, because the default request data type of jmeter is form, so the request data in json format needs to be set in the HTTP information header manager
Content-Type: application/json; charset=UTF-8
5. Finally, add a view result tree to view the response data of the request
6. Run the HTTP request, we can see that the returned data is the latest developments in the blog garden
Request is in Form format
I searched around in the blog garden and didn’t find a request in the form format. I had to go to other sites to find it. Let’s take the following interface as an example.
Url: https://data.cma.cn/weatherGis/web/weather/weatherFcst/getCurrentCondition
HTTP Method: Post
Request：
staId: 54511
1. The steps are basically the same as those in json format, the point that needs to be modified is the position of Requset Data
2. Because the data is requested in form format, the Content-Type in the HTTP header manager should be set to
Content-Type: application/x-www-form-urlencoded; charset=UTF-8
3. After the setting is complete, run the HTTP request and view the result tree to see the response data of the request.
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