1: pre-conditions
The fastjson-1.2.49.jar package placed in the lib directory jmeter and add the jar package to the Library test plan; otherwise it will be reported: Typed variable declaration: Class: JSONObject not found in namespace error
2: analytical thinking
After beanshell acquired using json response, and then analyzed by the array and JSONObject JSONArray, length through the array, the parameter values extracted
We need to parse the following json response, and extracted middle population Name
import com.alibaba.fastjson.JSONObject;
import com.alibaba.fastjson.JSONArray;
//import java.util.HashMap;
import com.alibaba.fastjson.JSON;
import com.alibaba.fastjson.JSONPath;
import java.util.List;
//获取获取请求的返回值
String response_data = prev.getResponseDataAsString();
//日志打印获取请求的返回值
log.info(response_data);
//将String类型的返回值构造成JSONObject对象
//JSONObject data_obj = JSONObject.parseObject(response_data);
JSONObject data_obj= JSON.parseObject(response_data);
log.info("--------------" + data_obj.toString());
//获取作为下一个请求post的参数值Province(两种方式)
String Provincelist_str = data_obj.getString("data");
log.info(Provincelist_str);
JSONObject jsondata= JSON.parseObject(Provincelist_str);
log.info("--------------" +jsondata.toString());
String CUUID = JSONPath.eval(data_obj,"$.data.elements[0].courses[0].courseUUID");
log.info(CUUID);
vars.put("MessageNum",CUUID);