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;
}

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LoadRunner参数和变量之间的转换

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