LoadRunner參數和變量之間的轉換

這是用LoadRunner自定義監控Tomcat的腳本爲基礎而寫的腳本.闡述了參數相互之間以及參數與變量之間複製傳遞原理.下面的代碼註釋是按照本身的理解寫的,正確性不必定保證.

 

Action()
{
    //定義三個字符數組用於條件判斷
    char jFM[100];
    char jTM[100];
    char jMM[100];

    //必需要預先聲明數據轉換函數,不然獲得的監控結果不正確.
    double atof(const char *string);

    //如下三個web_reg_save_param負責從Tomcat中抓取監控數據
    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);

    //設定監控事務
        lr_start_transaction("Status");
    //登錄Tomcat
    web_set_user("admin", "admin", "localhost:8080");
    //Tomcat監控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);
    //經過用戶自定義監控Tomcat_JVM的使用狀況
    //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("**********************************");

    //打印監控值
        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("**********************************");

    //將參數的值保存在另一個參數中(其實從運行原理上說,相似於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("**********************************");

    //將參數值賦給變量(字符串數組)
    strcpy(jFM, lr_eval_string("{JVM_Free_Memory}"));
    strcpy(jTM, lr_eval_string("{JVM_Total_Memory}"));
    strcpy(jMM, lr_eval_string("{JVM_Max_Memory}"));

    //進行邏輯判斷
    if (strcmp(jFM, "") == 0 && strcmp(jTM, "") == 0 && strcmp(jMM, "") == 0) {
        lr_output_message("%s", "無參數");
    } else {
        lr_output_message("%s", "有參數");
    }

    //輸出實際值
    lr_output_message("**********************************");
    lr_output_message("%s", jFM);
    lr_output_message("%s", jTM);
    lr_output_message("%s", jMM);
    lr_output_message("**********************************");

    //將變量值保存在另一個參數中(其實從運行原理上說,相似於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;
}