JMeter takes the result of the previous request as the parameter of the next request

The project interface needs to send a request with token value , Therefore, this article introduces jmeter Operation method that takes the result of the previous request as the parameter of the next request .

1、 New thread group ; Create a new thread under thread group HTTP Request to get token; Create a new view result tree to view the interface request status ;

 

 

2、 complete 【HTTP request 】 Set up , Send a request , see 【 Look at the fruit tree 】 Response data of the page ; 

Format it as follows

3、 stay 【 Look at the fruit tree 】 Regular expression test under the page , Pictured above , The data we want is { "data":" What we want token"}

4、 Use regular expressions to extract what you want

"data":"(.+?)"

()： The enclosed part is to be extracted 
.： A dot denotes matching division “\n” Any single character other than .（\n Represents a newline character ）
+：+ Sign means to match the previous character ,1 Times or more （ Here to fill out * It's fine too ）
?： Non greedy mode , Find a matching data and stop ; Greedy mode , Get rid of ？ The number is OK , It means to extract all the matching data 

Match count: 1  --- Indicates that there is a value for the matching addition 
Match[1][1] = xxxxxxxxx      --- Indicates that the first value obtained is xxxxxx

 If multiple values are obtained , The expression is as follows 
Match[2][1] =             ----- Take the second value 
Match[3][1] =             ----- The third value obtained 

5、 add to 【 Post Processors 】--【 Regular expression extractor 】

 Quote name ：   Is the name of the custom variable to be referenced by the next request ;
 Regular expressions ：   Is to extract the regular expression of what you want , Can combine   Look at the fruit tree   Under the   Regular tests   To write ;
 Templates ：   Is to use the extracted value . Because there may be multiple values matching , So use templates . from  1  Begin to match , By analogy . There's only one , So fill in  $1$  that will do ; according to   Look at the fruit tree   Under the   Regular tests   Back to Match Value filling 
 Match the Numbers （0 For random ）：  0  Represents a random value ,1  Represents all values . There's only one , fill  1  that will do ;
 The default value ：  Indicates that the parameter has no value , Give it a value . Generally, it is not filled in or null

6、 The newly added 【HTTP request 】（ need token）, To verify that

 7、 complete http After requesting the content of the page , add to 【HTTP Header Manager 】 To add token

 8、 Create a new view result tree running thread , View results

Successfully transferred obtain token Interface token To use

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This article does not provide When the regular expression extractor needs to extract multiple values , Follow up