LoadRunner参数和变量之间的转换
这是用LoadRunner自定义监控Tomcat的脚本为基础而写的脚本.阐述了参数相互之间以及参数与变量之间复制传递原理.下面的代码注释是按照自己的理解写的,正确性不一定保证.
- Action()
- {
- //定义三个字符数组用于条件判断
- char jFM[100];
- char jTM[100];
- char jMM[100];
- //必须要预先声明数据转换函数,否则得到的监控结果不正确.
- double atof(const char *string);
- //以下三个web_reg_save_param负责从Tomcat中抓取监控数据
- web_reg_save_param("JVM_Free_Memory",
- "LB=Free memory:",
- "RB=MB",
- "ORD=1",
- LAST);
- web_reg_save_param("JVM_Total_Memory",
- "LB=Total memory:",
- "RB=MB",
- "ORD=1",
- LAST);
- web_reg_save_param("JVM_Max_Memory",
- "LB=Max memory:",
- "RB=MB",
- "ORD=1",
- LAST);
- //设定监控事务
- lr_start_transaction("Status");
- //登陆Tomcat
- web_set_user("admin", "admin", "localhost:8080");
- //Tomcat监控URL
- web_url("status",
- "URL=http://localhost:8080/manager/status",
- "Resource=0",
- "RecContentType=text/html",
- "Snapshot=t1.inf",
- "Mode=HTML",
- LAST);
- lr_end_transaction("Status", LR_PASS);
- //通过用户自定义监控Tomcat_JVM的使用情况
- //lr_user_data_point("JVM Free Memory", atof(lr_eval_string("{JVM_Free_Memory}")));
- //lr_user_data_point("JVM Total Memory", atof(lr_eval_string("{JVM_Total_Memory}")));
- //lr_user_data_point("JVM Max Memory", atof(lr_eval_string("{JVM_Max_Memory}")));
- lr_output_message("**********************************");
- //打印监控值
- lr_output_message(lr_eval_string("{JVM_Free_Memory}"));
- lr_output_message(lr_eval_string("{JVM_Total_Memory}"));
- lr_output_message(lr_eval_string("{JVM_Max_Memory}"));
- lr_output_message("**********************************");
- //将参数的值保存在另外一个参数中(其实从运行原理上说,类似于C++中的引用)
- lr_save_string(lr_eval_string("{JVM_Free_Memory}"), "JFreeMem");
- lr_save_string(lr_eval_string("{JVM_Total_Memory}"), "JTotalMem");
- lr_save_string(lr_eval_string("{JVM_Max_Memory}"), "JMaxMem");
- lr_output_message("**********************************");
- //打印"引用"中的值
- lr_output_message(lr_eval_string("{JFreeMem}"));
- lr_output_message(lr_eval_string("{JTotalMem}"));
- lr_output_message(lr_eval_string("{JMaxMem}"));
- lr_output_message("**********************************");
- //将参数值赋给变量(字符串数组)
- strcpy(jFM, lr_eval_string("{JVM_Free_Memory}"));
- strcpy(jTM, lr_eval_string("{JVM_Total_Memory}"));
- strcpy(jMM, lr_eval_string("{JVM_Max_Memory}"));
- //进行逻辑判断
- if (strcmp(jFM, "") == 0 && strcmp(jTM, "") == 0 && strcmp(jMM, "") == 0) {
- lr_output_message("%s", "无参数");
- } else {
- lr_output_message("%s", "有参数");
- }
- //输出实际值
- lr_output_message("**********************************");
- lr_output_message("%s", jFM);
- lr_output_message("%s", jTM);
- lr_output_message("%s", jMM);
- lr_output_message("**********************************");
- //将变量值保存在另外一个参数中(其实从运行原理上说,类似于C++中的引用)
- lr_save_string(jFM, "JFreeMem");
- lr_save_string(jTM, "JTotalMem");
- lr_save_string(jMM, "JMaxMem");
- lr_output_message("**********************************");
- return 0;
- }