如何使用正则表达式提取器从响应中提取值

Question

在 Jmeter 中如何使用正则表达式提取器从下面的响应中提取 File_Name 和 ReqId 值

{"FileCode":["Aadhar"],"File_Name":"271954143_1_1.jpg","Aadhar_Features":[{"Confidence":"79.46","File_Code":"UIA","Count": 1},{"Confidence":"87.87","File_Code":"GOI","Count":1},{"Confidence":"88.25","File_Code":"Aadhar_Slogan","Count":1} ,{"Confidence":"92.36","File_Code":"SatyamevaJayateLogo","Count":1},{"Confidence":"92.99","File_Code":"AadharLogo","Count":1},{ "信心":"97.01","File_Code":"Aadhar","Count":2}],"ReqId":"REQ_1639032634869","类":[{"信心":[96.21741771697998,98.64940047264099],"坐标":["383,269,110.0,27","375,882,105.33333333333333,28"],"Count":2,"Name":"AadharNo"}]}

Answer 1

必须是正则表达式提取器吗？ JSON is not a regular language 因此考虑使用JSON JMESPath Extractor 是有意义的，它允许执行任意JMESPath 查询并将结果存储到JMeter Variables。

在您的情况下，JMESPath 表达式将只是 File_Name 和 ReqId，示例配置：

在需要时将提取的值引用为${File_Name}，相同的设置可用于ReqId

更多信息：The JMeter JSON JMESPath Extractor and Assertion: A Guide