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loadrunner 引數化取值方式詳解

阿新 • • 發佈：2020-11-05

引數化對話方塊中與引數取值方式有關的區域如下，在忘記的時候儲存下來，以便於即使檢視。

改變引數化的取值方式，關鍵在於Select next row和Update value on這兩個選項。

　　Select next row包括以下選項：

  • Sequential：順序方式
  • Random：隨機方式
  • Unique：唯一方式

　　Update value on包括如下選項：

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

以下程式碼以登入介面和引數化進行演示，引數化檔案中有2個值

1 2 3 4 5 6 7 8 9 10 lr_output_message("login_username:%s",lr_eval_string("{login_username}"));<br><br>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);

　引數化檔案中的資料為：

13141140050
13141140058

第一種取值方式：Sequential+Each iteration，設定迭代次數為3次，引數取值結果為：

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.

第二種取值方式：Sequential+Each occurrence，設定迭代次數為3次，引數取值結果為：

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 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 3.

第三種取值方式：Sequential+Once，設定迭代次數為3次，引數取值結果為：

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.
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 2.
Starting iteration 3.
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.

第四種取值方式：Random+Each iteration，設定迭代次數為3次，引數取值結果為：

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" =  "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 1.
Starting iteration 2.
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 2.
Starting iteration 3.
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 3.

第五種取值方式：Random+Each occurrence，設定迭代次數為3次，引數取值結果為：

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 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 3.

第六種取值方式：Random+Once，設定迭代次數為3次，引數取值結果為：

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.
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 2.
Starting iteration 3.
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.

第七種取值方式：Unique+Each iteration

這種取值方式，又可以有以下幾種設定：

當值不足時，可以選擇以下3種方式：

1)、中斷虛擬使用者

2)、迴圈取引數中的值，返回到第一行取值

3)、取最後一行值

以下執行結果以Abort Vuser為例執行，其它情況可自行設定執行，設定迭代次數為3次，引數取值結果為：

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.
Error: Parameter 'login_username': No more unique values for this parameter in table 'login_username.dat' [unique range is 1-2]. The Vuser is aborted according to "When Out Of Values" policy.
Action was aborted.
Ending Vuser...

第八種取值方式：Unique+Each occurrence，引數不夠用時，也會報錯，設定迭代次數為3次，引數取值結果為：

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): Error: Parameter 'login_username': No more unique values for this parameter in table 'login_username.dat' [unique range is 1-2]. The Vuser is aborted according to "When Out Of Values" policy.
Abort was called from an action.
Ending Vuser...

第九種取值方式：Unique+Once，引數不夠用時，也會報錯，設定迭代次數為3次，引數取值結果為：

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.
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 2.
Starting iteration 3.
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.

總結：

本文轉載於：loadrunner 引數化取值方式詳解

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