我正在编写一个 Jmeter 测试计划以将文件分块上传到服务器。我对Java知之甚少。
我在带有Bean Shell Pre-Processor的HTTP Request Sampler上使用了while 控制器。我编写了一个简短的脚本来从文件中获取字节,现在我面临的问题是:HTTP 请求采样器在文件上传部分获取文件路径。有没有办法在 Bean Shell 预处理器的内存中创建一个文件,然后在文件路径字段中使用该内存文件变量。
我认为理论上是,这是可能的。因为每当我们上传文件时,我们首先将其放入内存,然后发送到服务器。那么,我们是否可以从字节(1 MB 的块)在内存中创建一个文件,然后将其作为文件上传发送。这是我在 Bean Shell Pre-Processor 中编写的代码
Integer maxChunkSize = new Integer(vars.get("FILE_MAX_SIZE"));
String uploadFilePath = vars.get("UPLOAD_FILE");
uploadFileSize = new File(uploadFilePath).length();
InputStream uploadFile = new BufferedInputStream(new FileInputStream(uploadFilePath));
int offset = whileCounter * maxChunkSize;
ByteArrayOutputStream bos = new ByteArrayOutputStream();
byte[] bytes;
int size;
/* creating bytes array to hold file data*/
if (offset < uploadFileSize) {
if (((int) offset + (int) maxChunkSize) < uploadFileSize) {
bytes = new byte[ (int) maxChunkSize];
size = maxChunkSize;
} else {
size = (int) (uploadFileSize - offset);
bytes = new byte[ (int) size];
vars.put("WHILE_LOOP", "0");
}
}
/* printing results for debugging */
/*
log.info(" ============================================================== ");
log.info("While counter " + whileCounter.toString() );
log.info("While loop " + vars.get("WHILE_LOOP").toString() );
log.info("The file to upload is : " + uploadFilePath);
log.info("Maximum Chunk size is : " + maxChunkSize.toString());
log.info("Current Offset is : " + offset.toString());
log.info("The file size is " + uploadFileSize.toString());
log.info(" ============================================================== ");
*/
/* here it is giving method invocation on loop counter 2, so skip method is used */
uploadFile.skip(offset);
int bytesRead = uploadFile.read(bytes, 0, size);
/* write to byte output stream to read as a file */
bos.write(bytes, 0, bytesRead);
/* params for next iteration */
uploadFile.close();
whileCounter++;
vars.put("WHILE_COUNTER", whileCounter.toString() );
预期:通过 JMeter 分块上传文件的替代方法,或者创建一个内存变量,作为 JMeter HTTP 请求采样器->文件上传部分中文件上传路径的文件。