Interface test for quick start of JMeter

Jmeter Quick interface test

Catalog

• 1、 Preface
• 2、 brief introduction
• 3、 install
• 4、 environment variable
  • 4.1、Windows Environmental Science
  • 4.2、Mac Environmental Science
• 5、 Start the program
• 6、 Directory description
• 7、 The operation sample
  • 7.1、Get request
  • 7.2、Post request
  • 7.3、 Rely on requests

1、 Preface

Pressure measuring tool Jmeter In addition to performance testing , You can also do interface testing . When interface testing tends to be automated , You can use a typical interface automation test framework Jmeter + Ant + Jenkins.

This article will explain how to quickly use Jmeter To test the interface .

2、 brief introduction

Jmeter yes Apache Organization development based on Java Pressure testing tools for . For stress testing software , It was originally designed for Web Application testing , But then it expanded to other areas of testing .

It can be used to test static and dynamic resources , For example, static files 、Java Little service program 、CGI Script 、Java object 、 database 、FTP Servers and so on .

Jmeter Can be used for server 、 Network or object simulating huge load , Test their strength and analyze their overall performance from different stress categories . in addition ,Jmeter Ability to function on Applications / regression testing , Verify that your program returns what you expect by creating a script with assertions . For maximum flexibility ,Jmeter Allow regular expressions to create assertions .

Official website address ：

https://jmeter.apache.org/

3、 install

Official website download address ：

https://jmeter.apache.org/download_jmeter.cgi

Download the unzipped package version .

Be careful ： need Java 8+ （JDK 1.8+） The above support .

About JDK Installation and configuration , Clickable Java- install Read the article .

For example, this explanation system brings JDK Version is 1.8.0_261.

For example, download apache-jmeter-5.4.1.zip

When the download is complete , Unzip it to the path you specify .

for example ：

Windows System , Unzip to C Under the root directory .

Path is C:\apache-jmeter-5.4.1

Mac System , Unzip to /Users/wangmeng Under the table of contents .

Path is /Users/wangmeng/apache-jmeter-5.4.1

4、 environment variable

4.1、Windows Environmental Science

【 My computer 】 Right click ---> attribute ---> Advanced system setup ---> environment variable ---> System variables

newly build JMETER_HOME The value is C:\apache-jmeter-5.4.1

edit CLASSPATH The variable of （ If not, new ）, The value is

%JMETER_HOME%\lib\ext\ApacheJMeter_core.jar;%JMETER_HOME%\lib\jorphan.jar

edit PATH The new value added is %JMETER_HOME%\bin

After the save , Open the command line as Administrator , Input jmeter -v

Environment variable configuration succeeded

4.2、Mac Environmental Science

Open the terminal , edit .bash_profile file .

vim .bash_profile

Copy

Add the following configuration ：

export JMETER_HOME=/Users/wangmeng/apache-jmeter-5.4.1
export PATH=${PATH}:$JMETER_HOME/bin
export CLASSPATH=:$JMETER_HOME/lib/ext/ApacheJMeter_core.jar:$JMETER_HOME/lib/jorphan.jar

Copy

Save and exit , send .bash_profile The contents of the document take effect .

source ~/.bash_profile

Copy

Reopen the terminal , Input jmeter -v

Environment variable configuration succeeded

5、 Start the program

1、 Open command line or terminal input jmeter, You can start the program （ If the environment variable has been configured successfully ）.

2、 Or open Jmeter\bin Directory to start the application .

Windows System , double-click jmeter.bat that will do .

Mac System , double-click jmeter that will do .

6、 Directory description

• backups： Backup directory , Is to put your own jmx Script for backup , Each save will save the script to this directory , Saving multiple times will save multiple identical files , The file name is incremented by default .
• bin： Include startup 、 Configuration and other related commands .
• bin\jmeter.properties： Core profile , Various configurations are basically completed here .
• docs： Official interface document .
• extras： Auxiliary Library .
• lib： Store all kinds of Jmeter The source code of the core library jar package , Store your own secondary development jar package .
• lib\ext： Official third-party plug-ins .
• LICENSE： License description .
• licenses： License, etc .
• NOTICE： A simple message says .
• printable_docs： Offline help documentation , You can view functions and other contents .
• README.md： Official basic introduction .

7、 The operation sample

This article simulates the use of interface request links moco Generate .

About moco Deployment and use of , Clickable moco Series of chapters .

1、 Add thread group

【 test plan 】 Right click ---> Add ---> Threads(Users) ---> Thread Group

2、 Set the number of threads （ Number of concurrent users ） And the number of cycles

This chapter explains interface testing , Simulate one user request at a time , Therefore, the number of users and the number of cycles are 1 that will do .

7.1、Get request

Interface request address ：http://localhost:8083/getdemo

As shown in the figure ： First use Postman, Access this interface .

GET request ,2 Parameters username、password

The returned data is “ Successful operation ”

1、 add to HTTP request

【 Thread group 】 Right click ---> Add ---> Sampler ---> HTTP Request

Fill in the relevant configuration information .

Mode one ：

• The name of the interface ：demo01
• agreement ：http
• Server name or IP：localhost
• Port number ：8083
• Method ：GET
• route ：/getdemo
• Content encoding ：utf-8
• Parameters： Fill in the corresponding parameter name and parameter value

Mode two ：

• The name of the interface ：demo01
• agreement ：http
• Server name or IP：localhost
• Port number ：8083
• Method ：GET
• route ：/getdemo?username=admin&password=123456
• Content encoding ：utf-8

2、 Add response assertion

【demo01】 Right click ---> Add ---> Assertions ---> Response Assertion

Enter what the assertion matches .

According to the example interface , If the returned text content is equal to “ Successful operation ”, Then it's even Pass

3、 Add assertion results

【demo01】 Right click ---> Add ---> Listener ---> Assertion Results

4、 Add view result tree

【demo01】 Right click ---> Add ---> Listener ---> View Results Tree

5、 Run script

Operation mode 1 ：【 Thread group 】 Right click ---> Start

Operation mode II ： Click the run button .

6、 Running results

Look at the assertion results , Verification passed ,Pass

View the result tree , You can view request and response data , Verification passed ,Pass

7.2、Post request

Interface request address ：http://localhost:8083/postdemo

As shown in the figure ： First use Postman, Access this interface .

POST request ,2 Parameters username、password

The returned data is “ Successful operation ”

1、 add to HTTP request

【 Thread group 】 Right click ---> Add ---> Sampler ---> HTTP Request

Fill in the relevant configuration information .

• The name of the interface ：demo02
• agreement ：http
• Server name or IP：localhost
• Port number ：8083
• Method ：POST
• route ：/postdemo
• Content encoding ：utf-8
• Parameters： Fill in the corresponding parameter name and parameter value

2、 Add response assertion

【demo02】 Right click ---> Add ---> Assertions ---> Response Assertion

Enter what the assertion matches .

According to the example interface , If the returned text content is equal to “ Successful operation ”, Then it's even Pass

3、 Add assertion results

【demo02】 Right click ---> Add ---> Listener ---> Assertion Results

4、 Add view result tree

【demo02】 Right click ---> Add ---> Listener ---> View Results Tree

5、 Run script

Operation mode 1 ：【 Thread group 】 Right click ---> Start

Operation mode II ： Click the run button .

6、 Running results

Look at the assertion results , Verification passed ,Pass

View the result tree , You can view request and response data , Verification passed ,Pass

7.3、 Rely on requests

There are two interfaces , Interface 1 There is an interface in the data returned after execution 2 Required request parameters , Then execute the interface 2 when , First execute the interface 1 Get the specified data returned .

Interface 1 Request address ：http://localhost:8083/demo?aaa=123&bbb=456&ccc=789

As shown in the figure ： First use Postman, Access this interface .

GET request ,3 Parameters aaa、bbb、ccc

return json The data is ：

{

"mystatus": " Successful operation ",

"mytoken": "eyJhbGciOiJIUzI1NiJ9"

}

Interface 2 Request address ：http://localhost:8083/demo2

As shown in the figure ： First use Postman, Access this interface .

POST request , Request header has 2 Parameters Content-Type、mytoken

return json The data is ：

{

"mystatus": " Successful operation ",

"mystatusid": "1"

}

Sent json strand .

1、 Add user parameters

Interface 1 And interface 2 They all have parameters ccc, And it's worth it 789, It can be set as a public user variable , Convenient and unified extraction .

【 Thread group 】 Right click ---> Add ---> Pre Processors ---> User Parameters

Fill in the parameters ccc And parameter values 789

2、 add to HTTP request （ Interface 1）

【 Thread group 】 Right click ---> Add ---> Sampler ---> HTTP Request

Fill in the relevant configuration information .

• The name of the interface ：demo03-1
• agreement ：http
• Server name or IP：localhost
• Port number ：8083
• Method ：GET
• route ：/demo
• Content encoding ：utf-8
• Parameters： Fill in the corresponding parameter name and parameter value ,${ccc} Reference user parameters for ccc Value .

（1） Add response assertion

【demo03-1】 Right click ---> Add ---> Assertions ---> Response Assertion

Enter what the assertion matches .

According to the example interface 1, If the returned text content includes the specified “ Successful operation ”, Then it's even Pass

（2） Add assertion results

【demo03-1】 Right click ---> Add ---> Listener ---> Assertion Results

（3） Add view result tree

【demo03-1】 Right click ---> Add ---> Listener ---> View Results Tree

（4） Add regular expression extractor

Used to extract interface 1 Returns the specified data , Interface 2 This data will be called .

【demo03-1】 Right click ---> Add ---> Post Processors ---> Regular Expression Extractor

Fill in the relevant regular expression information .

• Quote name ： Variable name when referenced elsewhere , This is defined as my_token, Reference method ：${ Quote name }
• Regular expressions ： Data extractor ,() In parentheses is the value to be obtained ."mytoken":"( amount to LR The left border , )" amount to LR The right border of . And in parentheses .*? For regular expressions ,"mytoken":"(.*?)" Match the shortest , With "mytoken":" Start , With " Ending string .
• Templates ： Template for creating strings from found matches . This is an arbitrary string with special elements , Used to reference a group in a regular expression . The syntax of the reference group is ：1 Reference group 1,2 Reference group 2, wait .0 Reference the matching content of the whole expression .
• Match the Numbers ： All the results of regular expression matching data can be regarded as an array , A matching number is the number one element of an array .-1 All ,0 Random ,1 first ,2 the second , And so on . If you just get the first value of the match , Then fill in 1
• The default value ： Default value when matching fails .

（5） Add post debug processor

It is convenient to check whether the required information is correctly extracted in real time when debugging the script .

【demo03-1】 Right click ---> Add ---> Post Processors ---> Debug PostProcessor

3、 add to HTTP Head manager （ Interface 2）

Interface 2 There is request header information to be set , So add HTTP Head manager .

【 Thread group 】 Right click ---> Add ---> Config Element ---> HTTP Header Manager

Fill in the relevant configuration information .

${my_token} To reference regular expressions my_token Extract interface 1 Returns the specified value .

4、 add to HTTP request （ Interface 2）

【 Thread group 】 Right click ---> Add ---> Sampler ---> HTTP Request

Fill in the relevant configuration information .

• The name of the interface ：demo03-2
• agreement ：http
• Server name or IP：localhost
• Port number ：8083
• Method ：POST
• route ：/demo2
• Content encoding ：utf-8
• Body Data： Fill in the corresponding key value ,${ccc} Reference user parameters for ccc Value .

{

"id":"1",

"username":"test",

"password":"123456",

"ccc":"${ccc}"

}

（1） Add response assertion

【demo03-2】 Right click ---> Add ---> Assertions ---> Response Assertion

Enter what the assertion matches .

According to the example interface 2, If the returned text content includes the specified “ Successful operation ”, Then it's even Pass

（2） Add assertion results

【demo03-2】 Right click ---> Add ---> Listener ---> Assertion Results

（3） Add view result tree

【demo03-2】 Right click ---> Add ---> Listener ---> View Results Tree

5、 Run script

Operation mode 1 ：【 Thread group 】 Right click ---> Start

Operation mode II ： Click the run button .

6、 Running results

Interface 1, Look at the assertion results , Verification passed ,Pass

Interface 1, View the result tree , You can view request and response data , Verification passed ,Pass

Interface 1, View the result tree , Interface extracted by regular expression 1 Data returned by

Interface 2, Look at the assertion results , Verification passed ,Pass

Interface 2, View the result tree , You can view request and response data , Verification passed ,Pass