How to implement the association between interfaces in JMeter?

Hello, everyone , I'm Daejeon .

There are many ways to associate , Share two of them that are often used in the field ： Regular expression extractors and  json Extractor .

First we need to know , What does association mean ？

The two interfaces are related , The response data of the previous interface is passed into the request of the next interface as a parameter .

such as ： After a payment interface request is completed , You want to use the query interface to query the specific information of this order , that , You need to transfer the order data generated in the payment interface to the request of the query interface , Only in this way can we find the specific information of this order . This process is called correlation .

that JMeter How to implement Association in ？

The tool adds a post processor to the request ： Regular expression extractors and json Extractor , Add path as shown in the following figure .

About regular expression extractors ：

Quote name ： As the request name in the next interface , Define your own ;

Regular expressions ： Focus on finding the left and right boundaries of the response data , You can define multiple regular expressions . The common forms are （.*?）（.+?）;

remarks ：「.*?」 If the condition is met, it will only match once 、「.+?」 It means that after matching, it will directly return

Template ： In the multiple regular expressions defined in the previous step, extract the first one and use  $ A few $;

Match the Numbers ：-1 All match 、0 Random match 、1 The first matching value 、2 The second matching value , Usually filled in 1;

The default value ： Default value when matching fails , Just define yourself .

About json Extractor ：

Names of created variables： Quote name , Self defined ;

JSON Path expressions： Path expression , Generally speaking, it means how you can find the value you want to reference ;

Match No.(0 for Random)： Match the Numbers ,-1 All 、0 Random 、1 Is the first 、2 It's the second one. ;

Default Values： The default value , Represents the default value of matching failure , Here you can define it as the error message in case of failure .

The above is what Daejeon shared today , If you find it useful, you can give Daejeon a compliment .

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