loadrunner使用参数化，关联修改浏览帖子脚本

下面是浏览帖子的一个Action录制后经过简单修改的初始脚本。

viewtopic(){    //进入某个版块web_url("forum.php_3", "URL=http://192.168.159.144/bbs/forum.php?mod=forumdisplay&fid=38", "Resource=0", "RecContentType=text/html", "Referer=http://192.168.159.144/bbs/forum.php", "Snapshot=t122.inf", "Mode=HTML", LAST);     //点击某个帖子   web_url("forum.php_4", "URL=http://192.168.159.144/bbs/forum.php?mod=viewthread&tid=997&extra=page%3D1", "Resource=0", "RecContentType=text/html", "Referer=http://192.168.159.144/bbs/forum.php?mod=forumdisplay&fid=2", "Snapshot=t125.inf", "Mode=HTML", EXTRARES, "Url=static/image/common/share_btn.png", "Referer=http://192.168.159.144/bbs/forum.php?mod=viewthread&tid=997&extra=page%3D1", ENDITEM, "Url=static/image/common/midavt_shadow.gif", "Referer=http://192.168.159.144/bbs/forum.php?mod=viewthread&tid=997&extra=page%3D1", ENDITEM, "Url=static/image/common/fastreply.gif", "Referer=http://192.168.159.144/bbs/forum.php?mod=viewthread&tid=997&extra=page%3D1", ENDITEM, "Url=static/image/common/edit.gif", "Referer=http://192.168.159.144/bbs/forum.php?mod=viewthread&tid=997&extra=page%3D1", ENDITEM, LAST);}

在上面脚本中，点击的板块的fid与帖子的tid都是死的。这两个地方需要参数化和关联。

1.参数化板块的fid

如下图

然后将进入板块的fid的值替换为参数。如下

web_url("forum.php_3", "URL=http://192.168.159.144/bbs/forum.php?mod=forumdisplay&fid={fid}", "Resource=0", "RecContentType=text/html", "Referer=http://192.168.159.144/bbs/forum.php", "Snapshot=t122.inf", "Mode=HTML", LAST);

2.关联帖子的tid:

经过上面的对板块的fid值进行参数化后，每次迭代就会进入不同的板块，但是后面点击的帖子的tid是死了，不能做到进入哪个板块就点击哪个帖子的效果。所以要对tid进行关联。

我们首先查看下板块页面的html源代码，确定关联的左右边界。我将关键部分做了截图

图中箭头所指的部分就是需要关联的内容。

2.1 获取单个参数

首先在点击帖子之前执行 web_reg_save_param()函数，将找到的帖子的tid放入topictid参数中

web_reg_save_param("topictid","LB=<a href=\"forum.php?mod=viewthread&tid=","RB=&extra=page%3D1\" onclick=\"atarget(this)\" class=\"xst\" >","Search=NoResource",        "Notfound=warning","ORD=1",LAST);

注意：如果左右边界中有双引号，请将双引号前加上转义字符\

然后在点击帖子的时候使用topictid参数对帖子tid进行参数化。在此之前还需要判断此时板块里有没有帖子，没有帖子退出程序，有帖子的话执行web_url函数。

整体脚本如下：

viewtopic(){//查找出第一个帖子的tid，将此作为参数web_reg_save_param("topictid","LB=<a href=\"forum.php?mod=viewthread&tid=","RB=&extra=page%3D1\" onclick=\"atarget(this)\" class=\"xst\" >","Search=NoResource",        "Notfound=warning","ORD=1",LAST);    //进入某个版块web_url("forum.php_3", "URL=http://192.168.159.144/bbs/forum.php?mod=forumdisplay&fid={fid}", "Resource=0", "RecContentType=text/html", "Referer=http://192.168.159.144/bbs/forum.php", "Snapshot=t122.inf", "Mode=HTML", LAST);   //如果板块中没有帖子，直接退出脚本，如果有帖子，进行点击   if ( strcmp(lr_eval_string("{topictid}"),"") == 0 ) {  return 0;   }else  {   web_url("forum.php_4", "URL=http://{IP}/bbs/forum.php?mod=viewthread&tid={topictid}&extra=page%3D1", "Resource=0", "RecContentType=text/html", "Referer=http://{IP}/bbs/forum.php?mod=forumdisplay&fid=2", "Snapshot=t125.inf", "Mode=HTML", EXTRARES, "Url=static/image/common/share_btn.png", "Referer=http://{IP}/bbs/forum.php?mod=viewthread&tid=997&extra=page%3D1", ENDITEM, "Url=static/image/common/midavt_shadow.gif", "Referer=http://{IP}/bbs/forum.php?mod=viewthread&tid=997&extra=page%3D1", ENDITEM, "Url=static/image/common/fastreply.gif", "Referer=http://{IP}/bbs/forum.php?mod=viewthread&tid=997&extra=page%3D1", ENDITEM, "Url=static/image/common/edit.gif", "Referer=http://{IP}/bbs/forum.php?mod=viewthread&tid=997&extra=page%3D1", ENDITEM, LAST);    }   return 0;}

2.2 获取参数数组

  前面的方法有一个缺点，它只能点击某个板块的第一个帖子。这显然不是我们想要的结果。我们想要结果是能够随机点击某个板块的一个帖子。这时需要用到参数数组。

也就是执行 web_reg_save_param()函数的时候将某个板块首页的全部帖子的tid保存到一个参数数组中。脚本如下:

web_reg_save_param("topictid","LB=<a href=\"forum.php?mod=viewthread&tid=","RB=&extra=page%3D1\" onclick=\"atarget(this)\" class=\"xst\" >","Search=NoResource",        "Notfound=warning","ORD=ALL",LAST);

对照可以看出，此处把ORD=1，修改为了ORD=ALL。

修改后整体脚本如下：

viewtopic(){//用于记录参数数组的长度int len;//用于记录参数数组中随机取出的一个参数的值char * topic; //查找出所有帖子的的tid，并将此放入参数数组中web_reg_save_param("topictid","LB=<a href=\"forum.php?mod=viewthread&tid=","RB=&extra=page%3D1\" onclick=\"atarget(this)\" class=\"xst\" >","Search=NoResource",        "Notfound=warning","ORD=ALL",LAST);    //进入某个版块web_url("forum.php_3", "URL=http://{IP}/bbs/forum.php?mod=forumdisplay&fid={fid}", "Resource=0", "RecContentType=text/html", "Referer=http://{IP}/bbs/forum.php", "Snapshot=t122.inf", "Mode=HTML", LAST);//将数组长度的值赋值给len变量len =  atoi(lr_eval_string("{topictid_count}"));//将参数数组中随机取出的一个值赋给topic变量topic = lr_paramarr_random("topictid");//将参数数组中随机取出的值保持为randomtopic参数 lr_save_string( topic,"randomtopic"); if( len == 0) {return 0; }else { web_url("forum.php_4", "URL=http://{IP}/bbs/forum.php?mod=viewthread&tid={randomtopic}&extra=page%3D1", "Resource=0", "RecContentType=text/html", "Referer=http://{IP}/bbs/forum.php?mod=forumdisplay&fid=2", "Snapshot=t125.inf", "Mode=HTML", EXTRARES, "Url=static/image/common/share_btn.png", "Referer=http://{IP}/bbs/forum.php?mod=viewthread&tid=997&extra=page%3D1", ENDITEM, "Url=static/image/common/midavt_shadow.gif", "Referer=http://{IP}/bbs/forum.php?mod=viewthread&tid=997&extra=page%3D1", ENDITEM, "Url=static/image/common/fastreply.gif", "Referer=http://{IP}/bbs/forum.php?mod=viewthread&tid=997&extra=page%3D1", ENDITEM, "Url=static/image/common/edit.gif", "Referer=http://{IP}/bbs/forum.php?mod=viewthread&tid=997&extra=page%3D1", ENDITEM, LAST); }   return 0;}

在此说明下参数数组。我们可以通过下面的方法生成一个参数数组。

lr_save_string("www.baidu.com","site_1");lr_save_string("www.sina.com","site_2");lr_save_string("www.163.com","site_3");lr_save_string("www.qq.com","site_4");lr_save_string("4","site_count");

此时参数数组名为site，各个参数的名为site_1,site_2,site_3,site_4。在一个参数数组中，有一个参数用来记录参数数组的长度。即参数名_count。