Loadrunner上传文件解决办法（大文件）

╰+哭是因爲堅強的太久メ 2021-09-19 13:58 653阅读 0赞

最近再做一个跟海量存储相关的项目 **测试**，需要通过LR模拟用户大量上传和下载文件，请求是Rest或Soap，同时还要模拟多种大小尺寸不一的文件

通常情况下，都是使用简单的post协议即可：

**　方法一：**

<table style="border-style:solid;width:612.727px;"> 
 <tbody> 
  <tr> 
   <td> 
    <div>
      web_submit_data("importStudent.do", 
    </div> 
    <div>
      "Action=https://testserver/console/importStudent.do", 
    </div> 
    <div>
      "Method=POST", 
    </div> 
    <div>
      "EncType=multipart/form-data", 
    </div> 
    <div>
      "RecContentType=text/html", 
    </div> 
    <div>
      "Referer=https://testserver/console/displayStudentList.do", 
    </div> 
    <div>
      "Snapshot=t12.inf", 
    </div> 
    <div>
      "Mode=HTTP", 
    </div> 
    <div>
      ITEMDATA, 
    </div> 
    <div>
      "Name=uploadFile", "Value=D://Excel//data161955.zip", "File=yes", ENDITEM, 
    </div> 
    <div>
      LAST); 
    </div> </td> 
  </tr> 
 </tbody> 
</table>

后续对上传的文件进行MD5值比较，发现不一致，仔细查看后，发现上传的文件内容被loadrunner添加了几行额外的值，content-type等，无奈下，重写读文件的方式，我通过如下程序实现了1到10M文本文件的上传，如果上传二进制文件，body的写法有变化：

**方法二：**

<table style="color:rgb(51,51,51);font-family:Arial, Helvetica, sans-serif;border-style:solid;width:612.727px;"> 
 <tbody> 
  <tr> 
   <td> 
    <div>
      vuser_init() 
    </div> 
    <div>
      {  
    </div> 
    <div>
      char fileName[] = "D:/Script/CreateObj_10M/tools.zip"; 
    </div> 
    <div>
      int len = 0; 
    </div> 
    <div>
      int readLen=0; 
    </div> 
    <div>
      int tmpLen=1; 
    </div> 
    <div>
      int &nbsp;runLen =104857; 
    </div> 
    <div>
      int &nbsp;cLen = 0; 
    </div> 
    <div>
      if ( (file_stream = fopen(fileName, "rb")) == NULL) 
    </div> 
    <div>
      {  
    </div> 
    <div>
      lr_message("open file failed!\n"); 
    </div> 
    <div>
      return -1; 
    </div> 
    <div>
      } 
    </div> 
    <div>
      fseek(file_stream, 0, 2); 
    </div> 
    <div>
      len = ftell(file_stream); 
    </div> 
    <div>
      lr_message("file length is: %d bytes", &nbsp;len); 
    </div> 
    <div>
      readbuf = (char *) malloc(len+1); 
    </div> 
    <div>
      memset(readbuf, 0, len+1); 
    </div> 
    <div>
      if ( runLen &gt; len) {  
    </div> 
    <div>
      runLen = len; 
    </div> 
    <div>
      } 
    </div> 
    <div>
      fseek(file_stream, 0, 0); 
    </div> 
    <div>
      while(feof(file_stream)== 0){  
    </div> 
    <div>
      tmpLen = fread(readbuf + readLen, 1,runLen , file_stream); 
    </div> 
    <div>
      readLen += tmpLen; 
    </div> 
    <div>
      cLen = readLen + runLen; 
    </div> 
    <div>
      if (cLen &gt; len) {  
    </div> 
    <div>
      runLen = cLen - len; 
    </div> 
    <div>
      } 
    </div> 
    <div>
      if (tmpLen==0) {  
    </div> 
    <div>
      break; 
    </div> 
    <div>
      } 
    </div> 
    <div>
      } 
    </div> </td> 
  </tr> 
 </tbody> 
</table>

<table style="border-style:solid;width:612.727px;"> 
 <tbody> 
  <tr> 
   <td> 
    <div>
      //关闭文件句柄 
    </div> 
    <div>
      fclose(file_stream); 
    </div> 
    <div>
      //保存参数 
    </div> 
    <div>
      lr_save_string(readbuf,"bodys"); 
    </div> 
    <div>
      } 
    </div> 
    <div>
      Action() 
    </div> 
    <div>
      {  
    </div> 
    <div>
      lr_start_transaction("CreateObj_1M"); 
    </div> 
    <div>
      web_add_header("Accept", "text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8.."); 
    </div> 
    <div>
      web_add_header("Content-Type", "text/plain; charset=UTF-8"); 
    </div> 
    <div>
      web_add_header("Authorization", "YWS {userkey}:XXXXXXX"); 
    </div> 
    <div>
      web_custom_request("CreateObj", 
    </div> 
    <div>
      "URL=http://smartstorage{id}.yoyoyws.com:38080/test00bucket00/{IterationNum}-10M", 
    </div> 
    <div>
      "Method=PUT", 
    </div> 
    <div>
      "TargetFrame=", 
    </div> 
    <div>
      "Resource=0", 
    </div> 
    <div>
      "RecContentType=application/xml", 
    </div> 
    <div>
      "Referer=", 
    </div> 
    <div>
      "Mode=HTML", 
    </div> 
    <div>
      "Body={bodys}", &nbsp; &nbsp; &nbsp; //如果是二进制文件，可以改成BodyBinary 
    </div> 
    <div>
      LAST ); 
    </div> 
    <div>
      returnCode = web_get_int_property(HTTP_INFO_RETURN_CODE); 
    </div> 
    <div>
      if ( returnCode!=201 ) {  
    </div> 
    <div>
      lr_end_transaction("CreateObj_1M",LR_FAIL); 
    </div> 
    <div>
      }else{  
    </div> 
    <div>
      lr_end_transaction("CreateObj_1M",LR_PASS); 
    </div> 
    <div>
      } 
    </div> 
    <div>
      return 0; 
    </div> 
    <div>
      } 
    </div> </td> 
  </tr> 
 </tbody> 
</table>

但是这个程序依然有问题，当打开是二进制文件，或者文件内容过大的时候，依然会出现文件内容不一致的问题，我后续试验后，会持续更新。

最新内容请见作者的GitHub页：http://qaseven.github.io/