loadrunner 参数化取值方式详解

最新推荐文章于 2020-08-13 11:42:43 发布

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最新推荐文章于 2020-08-13 11:42:43 发布

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原文链接：http://www.cnblogs.com/benben-wu/p/10695330.html

本文详细介绍了LoadRunner中的参数化取值方式，包括Sequential、Random、Unique三种方式，以及Each iteration、Each occurrence、Once三个更新选项。通过登录接口的示例，展示了不同组合下的参数取值结果，并探讨了当参数值不足时的处理策略。

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参数化对话框中与参数取值方式有关的区域如下：

改变参数化的取值方式，关键在于Select next row和Update value on这两个选项。

　　Select next row包括以下选项：

Sequential：顺序方式
Random：随机方式
Unique：唯一方式

　　Update value on包括如下选项：

Each iteration：每次迭代更新取值
Each occurrence：每次取值更新
Once：只更新一次

以下代码以登录接口和参数化进行演示，参数化文件中有2个值

lr_output_message("login_username:%s",lr_eval_string("{login_username}"));

web_custom_request("login",
		"URL=http://192.168.44.130:8080/mobile/api/user/login",
		"Method=POST",
		"TargetFrame=",
		"Resource=0",
		"Referer=",
		"Mode=HTTP",
		"EncType=application/json;charset=utf-8",
		"Body={\"mobile\":\"{login_username}\",\"password\":\"123456\"}",
		LAST);

　参数化文件中的数据为：

13141140050
13141140058

第一种取值方式：Sequential+Each iteration，设置迭代次数为3次，参数取值结果为：

Starting iteration 1.
Maximum number of concurrent connections per server: 6 [MsgId: MMSG-26989]
Starting action Action.
Action.c(18): Notify: Parameter Substitution: parameter "login_username" = "13141140050"
Action.c(18): login_username:13141140050
Action.c(20): web_custom_request("login") started [MsgId: MMSG-26355]
Action.c(20): Notify: Parameter Substitution: parameter "login_username" = "13141140050"
Action.c(20): web_custom_request("login") was successful, 361 body bytes, 157 header bytes, 12 chunking overhead bytes [MsgId: MMSG-26385]
Ending action Action.
Ending iteration 1.
Starting iteration 2.
Notify: Next row for parameter login_username = 2 [table = login_username].
Notify: Getting new value for parameter 'login_username': table = 'login_username.dat' column = '0' row = '2'.
Starting action Action.
Action.c(18): Notify: Parameter Substitution: parameter "login_username" = "13141140058"
Action.c(18): login_username:13141140058
Action.c(20): web_custom_request("login") started [MsgId: MMSG-26355]
Action.c(20): Notify: Parameter Substitution: parameter "login_username" = "13141140058"
Action.c(20): web_custom_request("login") was successful, 361 body bytes, 157 header bytes, 12 chunking overhead bytes [MsgId: MMSG-26385]
Ending action Action.
Ending iteration 2.
Starting iteration 3.
Notify: Next row for parameter login_username = 1 [table = login_username].
Notify: Getting new value for parameter 'login_username': table = 'login_username.dat' column = '0' row = '1'.
Starting action Action.
Action.c(18): Notify: Parameter Substitution: parameter "login_username" = "13141140050"
Action.c(18): login_username:13141140050
Action.c(20): web_custom_request("login") started [MsgId: MMSG-26355]
Action.c(20): Notify: Parameter Substitution: parameter "login_username" = "13141140050"
Action.c(20): web_custom_request("login") was successful, 361 body bytes, 157 header bytes, 12 chunking overhead bytes [MsgId: MMSG-26385]
Ending action Action.
Ending iteration 3.

第二种取值方式：Sequential+Each occurrence，设置迭代次数为3次，参数取值结果为：

Starting iteration 1.
Maximum number of concurrent connections per server: 6      [MsgId: MMSG-26989]
Starting action Action.
Action.c(18): Notify: Getting new value for parameter 'login_username': table = 'login_username.dat' column = '0' row = '1'.
Action.c(18): Notify: Parameter Substitution: parameter "login_username" =  "13141140050"
Action.c(18): login_username:13141140050
Action.c(20): web_custom_request("login") started      [MsgId: MMSG-26355]
Action.c(20): Notify: Next row for parameter login_username = 2 [table  = login_username].
Action.c(20): Notify: Getting new value for parameter 'login_username': table = 'login_username.dat' column = '0' row = '2'.
Action.c(20): Notify: Parameter Substitution: parameter "login_username" =  "13141140058"
Action.c(20): web_custom_request("login") was successful, 361 body bytes, 157 header bytes, 12 chunking overhead bytes      [MsgId: MMSG-26385]
Ending action Action.
Ending iteration 1.
Starting iteration 2.
Starting action Action.
Action.c(18): Notify: Next row for parameter login_username = 1 [table  = login_username].
Action.c(18): Notify: Getting new value for parameter 'login_username': table = 'login_username.dat' column = '0' row = '1'.
Action.c(18): Notify: Parameter Substitution: parameter "login_username" =  "13141140050"
Action.c(18): login_username:13141140050
Action.c(20): web_custom_request("login") started      [MsgId: MMSG-26355]
Action.c(20): Notify: Next row for parameter login_username = 2 [table  = login_username].
Action.c(20): Notify: Getting new value for parameter 'login_username': table = 'login_username.dat' column = '0' row = '2'.
Action.c(20): Notify: Parameter Substitution: parameter "login_username" =  "13141140058"
Action.c(20): web_custom_request("login") was successful, 361 body bytes, 157 header bytes, 12 chunking overhead bytes      [MsgId: MMSG-26385]
Ending action Action.
Ending iteration 2.
Starting iteration 3.
Starting action