全局变量、BeanShell Sampler、JDBC(postgresql)
设置全局变量
场景:在压测指定接口时需要先进行登录才能去访问接口,解决方案是先设置一个登录线程,登录成功后通过JSON Extractor提取出token,再通过BeanShell Sampler将环境变量设置成全局变量,使用函数为 __setProperty
,例如:${__setProperty(access_token, ${access_token})};
![线程组 image.png](https://img-blog.csdnimg.cn/img_convert/2b1ac78b1ecf97d3e135dacbaed212f0.png#averageHue=#f8f7f6&clientId=u67768fca-39cb-4&from=paste&height=150&id=ue167018f&name=image.png&originHeight=187&originWidth=287&originalType=binary&ratio=1.25&rotation=0&showTitle=true&size=30121&status=done&style=none&taskId=u904f1c3c-eb09-43ae-9189-553aa2860cb&title=%E7%BA%BF%E7%A8%8B%E7%BB%84&width=229.6)
![提取Token image.png](https://img-blog.csdnimg.cn/img_convert/71a865a89cc32d7a4a864f7ccd16dce0.png#averageHue=#f4f4f4&clientId=u67768fca-39cb-4&from=paste&height=190&id=u7422da3b&name=image.png&originHeight=237&originWidth=914&originalType=binary&ratio=1.25&rotation=0&showTitle=true&size=37337&status=done&style=none&taskId=ua9a8e8ae-8fd3-4a98-aa6d-ae3ae6085c4&title=%E6%8F%90%E5%8F%96Token&width=731.2)
读取全局变量,使用函数__property
,例如 ${__property(access_token)}
![读取全局变量 image.png](https://img-blog.csdnimg.cn/img_convert/562c84d44fc3145b8b25a39a566031c2.png#clientId=u67768fca-39cb-4&from=paste&height=207&id=u1c690340&name=image.png&originHeight=259&originWidth=1197&originalType=binary&ratio=1.25&rotation=0&showTitle=true&size=65731&status=done&style=none&taskId=u05573dad-a038-40d3-bc6b-4e0e3f8ef7c&title=%E8%AF%BB%E5%8F%96%E5%85%A8%E5%B1%80%E5%8F%98%E9%87%8F&width=957.6)
BeanShell Sampler
写了一段BeanShell脚本,脚本中主要有一些功能
- 指定几个变量,每次循环随机获取其中一个
- 获取当前时间并转换成指定格式(最后发现其实jmeter中存在响应的函数
__timeShift
) - 将BeanShell中变量设置成环境变量
import java.time.*;
import java.time.format.*;
String[] keys = {"equivalentPeak","validValue","equivalentPpValue", "envTruePpValue"};
int k = (int) (Math.random() * 4) % 4 ;
vars.put("key", keys[k]);
String[] data_cate = {"acceleration","speed","displacement"};
int l = (int) (Math.random() * 3) % 3 ;
vars.put("data_cate", data_cate[l]);
LocalDateTime time1 = LocalDateTime.now();
LocalDateTime time2 = time1.minusDays(1);
String now_time = time1.format(DateTimeFormatter.ofPattern("yyyy-MM-dd HH:mm:ss"));
String start_time = time2.format(DateTimeFormatter.ofPattern("yyyy-MM-dd HH:mm:ss"));
vars.put("start_time", start_time);
vars.put("now_time", now_time);
JDBC(postgresql)
首先是驱动,在网上找到的官网地址地不开,其它路径找了一个,版本42.5.0
链接:https://pan.baidu.com/s/1rE6o1B9CEenGcNTlKuPWIg?pwd=gvd1
提取码:gvd1
将下载后将jar文件放入到jmeter安装目录下的lib文件夹下,重启启动下jmeter
使用起来还是很方便的,和mysql基本一样
添加 JDBC Connection Configuration
![image.png](https://img-blog.csdnimg.cn/img_convert/d450bb26059a12787c9b0280f0e42e41.png#averageHue=#f6f6f6&clientId=u67768fca-39cb-4&from=paste&height=490&id=ue2922e53&name=image.png&originHeight=613&originWidth=900&originalType=binary&ratio=1.25&rotation=0&showTitle=false&size=77863&status=done&style=none&taskId=u60fd2543-91b2-4586-8127-01b7c1a3343&title=&width=720)
添加 JDBC Request
![image.png](https://img-blog.csdnimg.cn/img_convert/241821b61fb0478234078d32f6309742.png#averageHue=#f9f9f8&clientId=u67768fca-39cb-4&from=paste&height=484&id=u726e7274&name=image.png&originHeight=605&originWidth=902&originalType=binary&ratio=1.25&rotation=0&showTitle=false&size=61695&status=done&style=none&taskId=uef3eddc4-25a6-4dc3-bc99-a21ae5a4b69&title=&width=721.6)
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