解析response中的内容，并把获取到的value传递到后续的request中，常用的方法就是在想要解析response的request上添加后置处理器
本章介绍两种常用的组件

• BeanShell PostProcessor
• JSON Extractor

添加后置处理器：BeanShell PostProcessor

• 获取response中的字符串，并对内容进行判断，当response中包含“The wait operation timed out”或者“Oops. Something went wrong ... sorry”时，都认为该request的response不正确
  String response = prev.getResponseDataAsString();
  String code = prev.getResponseCode();
  log.info("Respnse is " + response);
  log.info(code);
  int result1 = response.indexOf("The wait operation timed out");
  int result2 = response.indexOf("Oops. Something went wrong ... sorry");
  if(code == "200" && result1>=0 || result2>=0){
  FailureMessage = "OK,check current";
  }
  else{
  Failure = true;
  FailureMessage = "ERROR,check error";
  }

• 解析返回的Jason数据，获取name字段的值赋给变量result

{“body”:{“apps”:[{“name”:”111”},{“name”:”222”}]}}

import org.json.*;
脚本中的导入的json包需要自己去网络下载后放到\lib\ext下

String response_data = prev.getResponseDataAsString();
JSONObject data_obj = new JSONObject(response_data);
String apps_str = data_obj.get("body").get("apps").toString();
JSONArray apps_array = new JSONArray(apps_str);
String[] result = new String[apps_array.length()];
for(int i=0;i<apps_array.length();i++){
JSONObject app_obj = new JSONObject(apps_array.get(i).toString());
String name = app_obj.get("name").toString();
result[i] = name;
}
vars.put("result", Arrays.toString(result));

添加后置处理器：JSON Extractor

解析返回的Jason数据，获取name字段的值带入参数到后边的request中

{“body”:{“apps”:[{“name”:”111”},{“name”:”222”}]}}

变量t1的值是111，变量t2的值是222

原文 Jmeter Web 性能测试入门 (六)：Jmeter 解析 response 并传递 value