LoadRunner录制的脚本，有一处不管是关联还是不关联，回放均失败，求高手解答

sirme

本次遇到的问题是：在测试自有产品项目管理系统（B/S架构，JAVA开发）的并发用户数的瓶颈（验证本系统最多支持多少用户并发操作），录制脚本使用Web协议。
以下是我用LR8.1录制的脚本：
/* Registering parameter(s) from source task id 81

// {WCSParam3} = "57332B5914AD9733B6AAC14BAE8DBF664D9A7FC64B58FA2512F789137377C5D2449515B69B0D8B8E"

// */


web_reg_save_param("WCSParam3",

"LB/IC=.do?sid=",

"RB/IC=;",

"Ord=ALL",

"Search=headers",

"RelFrameId=1",

"SaveLen=80",

LAST);


web_url("main.do",

"URL=http://116.204.99.242:8888/JH_SMS/main.do?sid=57332B5914AD9733B6AAC14BAE8DBF664D9A7FC64B58FA2512F789137377C5D2449515B69B0D8B8E ",  注：应该是这里出了问题，为什么我用关联参数{WCSParam3}代替后，回放找不到{WCSParam3},见如后面的报错。如不替换的话，此时页面是过期的（最新的已变成2A515179A0B211BC8EAB16D33D6B440E8E1A19B9E347FDE59BDCFAA0F5129BA58DC1AF2410A98472 ），将无法打开而失败。请高手帮助解答，如何解决，谢谢！

"Resource=0",

"RecContentType=text/html",

"Referer=",

"Snapshot=t4.inf",

"Mode=HTML",

EXTRARES,

"Url=js/dojo/_firebug/firebug.js", "Referer=http://116.204.99.242:8888/JH_SMS/main.do?sid={WCSParam3}", ENDITEM,

"Url=js/dojo/parser.js", "Referer=http://116.204.99.242:8888/JH_SMS/main.do?sid={WCSParam3}", ENDITEM,

"Url=js/dojo/date/stamp.js", "Referer=http://116.204.99.242:8888/JH_SMS/main.do?sid={WCSParam3}", ENDITEM,

"Url=js/dijit/form/Button.js", "Referer=http://116.204.99.242:8888/JH_SMS/main.do?sid={WCSParam3}", ENDITEM,

"Url=js/dijit/form/_FormWidget.js", "Referer=http://116.204.99.242:8888/JH_SMS/main.do?sid={WCSParam3}", ENDITEM,

"Url=js/dojo/window.js", "Referer=http://116.204.99.242:8888/JH_SMS/main.do?sid={WCSParam3}", ENDITEM,

"Url=js/dijit/_Widget.js", "Referer=http://116.204.99.242:8888/JH_SMS/main.do?sid={WCSParam3}", ENDITEM,

"Url=js/dijit/_WidgetBase.js", "Referer=http://116.204.99.242:8888/JH_SMS/main.do?sid={WCSParam3}", ENDITEM,

"Url=js/dijit/_base/manager.js", "Referer=http://116.204.99.242:8888/JH_SMS/main.do?sid={WCSParam3}", ENDITEM,

"Url=js/dojo/Stateful.js", "Referer=http://116.204.99.242:8888/JH_SMS/main.do?sid={WCSParam3}", ENDITEM,

"Url=js/dijit/_base.js", "Referer=http://116.204.99.242:8888/JH_SMS/main.do?sid={WCSParam3}", ENDITEM,

"Url=js/dijit/_base/focus.js", "Referer=http://116.204.99.242:8888/JH_SMS/main.do?sid={WCSParam3}", ENDITEM,

"Url=js/dijit/_base/place.js", "Referer=http://116.204.99.242:8888/JH_SMS/main.do?sid={WCSParam3}", ENDITEM,

"Url=js/dojo/AdapterRegistry.js", "Referer=http://116.204.99.242:8888/JH_SMS/main.do?sid={WCSParam3}", ENDITEM,

"Url=js/dijit/_base/popup.js", "Referer=http://116.204.99.242:8888/JH_SMS/main.do?sid={WCSParam3}", ENDITEM,

"Url=js/dijit/_base/window.js", "Referer=http://116.204.99.242:8888/JH_SMS/main.do?sid={WCSParam3}", ENDITEM,

"Url=js/dijit/_base/scroll.js", "Referer=http://116.204.99.242:8888/JH_SMS/main.do?sid={WCSParam3}", ENDITEM,

"Url=js/dijit/_base/sniff.js", "Referer=http://116.204.99.242:8888/JH_SMS/main.do?sid={WCSParam3}", ENDITEM,

"Url=js/dojo/uacss.js", "Referer=http://116.204.99.242:8888/JH_SMS/main.do?sid={WCSParam3}", ENDITEM,

"Url=js/dijit/_base/typematic.js", "Referer=http://116.204.99.242:8888/JH_SMS/main.do?sid={WCSParam3}", ENDITEM,

"Url=js/dijit/_base/wai.js", "Referer=http://116.204.99.242:8888/JH_SMS/main.do?sid={WCSParam3}", ENDITEM,

"Url=js/dijit/_Templated.js", "Referer=http://116.204.99.242:8888/JH_SMS/main.do?sid={WCSParam3}", ENDITEM,

"Url=js/dojo/string.js", "Referer=http://116.204.99.242:8888/JH_SMS/main.do?sid={WCSParam3}", ENDITEM,

"Url=js/dojo/cache.js", "Referer=http://116.204.99.242:8888/JH_SMS/main.do?sid={WCSParam3}", ENDITEM,

"Url=js/dijit/_CssStateMixin.js", "Referer=http://116.204.99.242:8888/JH_SMS/main.do?sid={WCSParam3}", ENDITEM,

"Url=js/dijit/_Container.js", "Referer=http://116.204.99.242:8888/JH_SMS/main.do?sid={WCSParam3}", ENDITEM,

"Url=js/dijit/_HasDropDown.js", "Referer=http://116.204.99.242:8888/JH_SMS/main.do?sid={WCSParam3}", ENDITEM,

"Url=js/dijit/Dialog.js", "Referer=http://116.204.99.242:8888/JH_SMS/main.do?sid={WCSParam3}", ENDITEM,

"Url=js/dojo/dnd/move.js", "Referer=http://116.204.99.242:8888/JH_SMS/main.do?sid={WCSParam3}", ENDITEM,

"Url=js/dojo/dnd/Mover.js", "Referer=http://116.204.99.242:8888/JH_SMS/main.do?sid={WCSParam3}", ENDITEM,

"Url=js/dojo/dnd/common.js", "Referer=http://116.204.99.242:8888/JH_SMS/main.do?sid={WCSParam3}", ENDITEM,

"Url=js/dojo/dnd/autoscroll.js", "Referer=http://116.204.99.242:8888/JH_SMS/main.do?sid={WCSParam3}", ENDITEM,

"Url=js/dojo/dnd/Moveable.js", "Referer=http://116.204.99.242:8888/JH_SMS/main.do?sid={WCSParam3}", ENDITEM,

"Url=js/dojo/dnd/TimedMoveable.js", "Referer=http://116.204.99.242:8888/JH_SMS/main.do?sid={WCSParam3}", ENDITEM,

"Url=js/dojo/fx.js", "Referer=http://116.204.99.242:8888/JH_SMS/main.do?sid={WCSParam3}", ENDITEM,

"Url=js/dojo/fx/Toggler.js", "Referer=http://116.204.99.242:8888/JH_SMS/main.do?sid={WCSParam3}", ENDITEM,

"Url=js/dijit/form/_FormMixin.js", "Referer=http://116.204.99.242:8888/JH_SMS/main.do?sid={WCSParam3}", ENDITEM,

"Url=js/dijit/_DialogMixin.js", "Referer=http://116.204.99.242:8888/JH_SMS/main.do?sid={WCSParam3}", ENDITEM,

"Url=js/dijit/DialogUnderlay.js", "Referer=http://116.204.99.242:8888/JH_SMS/main.do?sid={WCSParam3}", ENDITEM,

"Url=js/dijit/layout/ContentPane.js", "Referer=http://116.204.99.242:8888/JH_SMS/main.do?sid={WCSParam3}", ENDITEM,

"Url=js/dijit/layout/_ContentPaneResizeMixin.js", "Referer=http://116.204.99.242:8888/JH_SMS/main.do?sid={WCSParam3}", ENDITEM,

"Url=js/dijit/_Contained.js", "Referer=http://116.204.99.242:8888/JH_SMS/main.do?sid={WCSParam3}", ENDITEM,

"Url=js/dijit/layout/_LayoutWidget.js", "Referer=http://116.204.99.242:8888/JH_SMS/main.do?sid={WCSParam3}", ENDITEM,

"Url=js/dojo/html.js", "Referer=http://116.204.99.242:8888/JH_SMS/main.do?sid={WCSParam3}", ENDITEM,

"Url=js/dojo/i18n.js", "Referer=http://116.204.99.242:8888/JH_SMS/main.do?sid={WCSParam3}", ENDITEM,

"Url=js/dijit/nls/zh/loading.js", "Referer=http://116.204.99.242:8888/JH_SMS/main.do?sid={WCSParam3}", ENDITEM,

"Url=js/dijit/nls/zh/common.js", "Referer=http://116.204.99.242:8888/JH_SMS/main.do?sid={WCSParam3}", ENDITEM,

"Url=js/dijit/TooltipDialog.js", "Referer=http://116.204.99.242:8888/JH_SMS/main.do?sid={WCSParam3}", ENDITEM,

"Url=js/dijit/form/ValidationTextBox.js", "Referer=http://116.204.99.242:8888/JH_SMS/main.do?sid={WCSParam3}", ENDITEM,

"Url=js/dijit/form/TextBox.js", "Referer=http://116.204.99.242:8888/JH_SMS/main.do?sid={WCSParam3}", ENDITEM,

"Url=js/dijit/Tooltip.js", "Referer=http://116.204.99.242:8888/JH_SMS/main.do?sid={WCSParam3}", ENDITEM,

"Url=js/dijit/form/nls/zh/validate.js", "Referer=http://116.204.99.242:8888/JH_SMS/main.do?sid={WCSParam3}", ENDITEM,

"Url=js/dijit/form/Form.js", "Referer=http://116.204.99.242:8888/JH_SMS/main.do?sid={WCSParam3}", ENDITEM,

"Url=images/main_bg.jpg", "Referer=http://116.204.99.242:8888/JH_SMS/main.do?sid={WCSParam3}", ENDITEM,

"Url=images/main_bgline.jpg", "Referer=http://116.204.99.242:8888/JH_SMS/main.do?sid={WCSParam3}", ENDITEM,

LAST);
录制完后，回放失败，信息如下：
Action.c(125): Error -26366: "Text=欢迎使用项目管理系统" not found for web_reg_find  
[MsgId: MERR-26366]
Action.c(125): Error -26377: No match found for the requested parameter "WCSParam3". Check whether the requested boundaries exist in the response data. Also, if the data you want to save exceeds 1024 bytes, use web_set_max_html_param_len to increase the parameter size  
[MsgId: MERR-26377]
Action.c(125): Notify: Saving Parameter "WCSParam3_count = 0"
Action.c(125): web_url("main.do") highest severity level was "ERROR", 197662 body bytes, 4087 header bytes, 11 chunking overhead bytes  
[MsgId: MMSG-26387]


关联函数的位置应该不是问题，但又不知道为什么关联后，又不能将最新的动态数据代替。
本人用lr_output_message("%s",lr_eval_string("{WCSParam3}"));打印显示是空的。请问如何打印WCSParam3的变量信息？

sirme

谢谢各位的支持，问题已解决。
通过查找Generation Log，发现是自动关联时，web_reg_save_param函数位置顺序存放出差错了。还真想不到LoadRunner有这个BUG。

mrfatxx

心情好。。。帮你解答下吧。。。
1. EXTRARES以下是废代码，都是一些网页内容的链接信息，所以这些基本都可 ...
tachibana814 发表于 2013-5-14 10:06

“EXTRARES以下是废代码，都是一些网页内容的链接信息”对于ls这点还是有点不同的看法哈，虽然说这部分请求删了对主请求也没有什么影响，但对于服务器来说，这部分的EXTRARES所造成的性能影响有可能比主请求的还大，对于真实场景运行时，这些请求如果又是必须产生的话，去掉反而会“失真”，那么你测出来的结果参考意义自然也大为降低，所以我个人觉得，如果录制脚本的时候这些附加请求都是确确实实存在的话，那么还是不要去掉为好

tachibana814

补充下，还有你关联函数的位置。。。一般都是先注册创建关联函数，然后再之后的页面替换，可能是第二个页面，也可能是第三第四个页面，关键看你的业务流程。建议以后不要用自动关联，手动关联可以让你更好掌握网页的数据传递以及业务流程

tachibana814

心情好。。。帮你解答下吧。。。
1. EXTRARES以下是废代码，都是一些网页内容的链接信息，所以这些基本都可以删掉
2. 基于你报错的MSG和关联函数，估计你是用自动关联的
WCSParam3的唯一性是否确认过，还有就是你关联内容的字节数超过了1024，你必须在代码开头加一段关联内容长度的控制函数，设置此脚本中关联的长度为多少上限。
自己再试试吧

mrfatxx

额，楼主你关联的请求不对，web_url("main.do"）这个请求之前至少还有一个请求吧，web_reg_save_param("WCSParam3"）这个函数你要放在第一次服务器返回sid的前面

omg

个人理解这个警告，就是说打印的时候，这个WCSParam3还没有执行到关联地方。

我始终怀疑你的获取这个值的地方不对，如果你的实际代码顺序真是这样的：

web_reg_save_param("WCSParam3",

"LB/IC=.do?sid=",

"RB/IC=;",

"Ord=ALL",

"Search=headers",

"RelFrameId=1",

"SaveLen=80",

LAST);


web_url("main.do",

"URL=http://116.204.99.242:8888/JH_SMS/main.do?sid=57332B5914AD9733B6AAC14BAE8DBF664D9A7FC64B58FA2512F789137377C5D2449515B69B0D8B8E "

因为第一句是注册关联函数，第二句是打开这个页面，同时让关联函数去取值，然后赋值给WCSParam3。

所以第二句sid=这里已经替换为{WCSParam3}，那就算你的关联有效果，那WCSParam3只会等于{WCSParam3}这个本身。不知道看你懂没有。

感觉，你应该在其他页面，第一次生成或者能拿到这个sid的地方，做关联，然后，到你这里的第二句，才能用。

sirme

回复 5# omg
使用你所说的函数，执行后运行日志内容如下：
Action.c(124): Warning: The string 'WCSParam3' with parameter delimiters is not a parameter.Action.c(124): {WCSParam3}

还是不能根本性解决问题，关联的函数应该没问题，但不知道为什么就是获取不到值？

omg

打印变量的值，还可以更简单点lr_output_message(lr_eval_string("{WCSParam3}"));

在这里替换之前，获取到关联之后，输出这个变量看看。
web_url("main.do",

"URL=http://116.204.99.242:8888/JH_SMS/main.do?

sirme

回复 3# 云层
一开始录制是不能自动关联的，是我手动添加关联规约才能录制时自动关联，也做了手动关联，结果都一样

云层

dojo框架么。。。把录制选项改一下别用web_link很容易有问题，关联估计是需要的，你要自己做手工关联试试。

黑羽祭

回复 1# sirme


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