jmeter学习（7）beanshell

beanshell preprocessor

发送请求前执行

beanshell postprocessor

发送请求前执行

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获取请求相关信息

String body = sampler.getArguments().getArgument(0).getValue();
String url = sampler.getPath();

获取响应报文
String response=prev.getResponseDataAsString();

获取变量

String deviceId = vars.get("deviceId");

设置变量

vars.put("deviceHttpsToken", xxxx);

举例：获取返回数据中的字段

import org.apache.jmeter.config.Arguments;
import com.fasterxml.jackson.databind.JsonNode;
import com.fasterxml.jackson.databind.ObjectMapper;
//获取响应报文
String response=prev.getResponseDataAsString();
ObjectMapper mapper = new ObjectMapper();
JsonNode rootNode=mapper.readTree(response);retCode=rootNode.get("retCode").asText();
log.info("==========取到的retCode值："+retCode);
vars.put("code",code);

 有列表

import org.apache.jmeter.config.Arguments;
import com.fasterxml.jackson.databind.JsonNode;
import com.fasterxml.jackson.databind.ObjectMapper;
//获取响应报文
String response=prev.getResponseDataAsString();
ObjectMapper mapper = new ObjectMapper();
JsonNode rootNode=mapper.readTree(response);retCode=rootNode.get("payload").get("list").get(0).get("creator").asText();
log.info("==========取到的retCode值："+retCode);
//vars.put("code",code);

截取字符串

No=vars.get("No");
log.info("获取到的No："+No);
No=No.substring(1);
log.info("去掉第一位后的No："+No);
No1=No.substring(0,3);
log.info("截取出来的001："+No1);

计算

import java.math.BigDecimal;
 
BigDecimal a=new BigDecimal("6");
BigDecimal b=new BigDecimal("2");
BigDecimal c=a.add(b);
String c1=c.toString();
log.info("a+b="+c1);
 
BigDecimal c=a.subtract(b);
String c1=c.toString();
log.info("a-b="+c1);
 
BigDecimal c=a.multiply(b);
String c1=c.toString();
log.info("a*b="+c1);
 
BigDecimal c=a.divide(b);
String c1=c.toString();
log.info("a/b="+c1);

查看日志

打开日志选项，beanshell的log可以在日志中查看log.info("deviceId"）