如何在Jmeter中的http后处理器中从示例结果中删除原始帖子正文

Question

我有一个上传1.5 Gb文件的场景，我使用分布式jmeter测试。I.e请求数据对我的测试没有意义，所以我不希望将post数据从slave(代理(jmeter传输到master(服务器(。然而，在beanshell后处理器中，我还没有找到任何API来从http采样器中删除原始post数据。

https://jmeter.apache.org/api/org/apache/jmeter/protocol/http/sampler/HTTPSamplerBase.html#setPostBodyRaw-boolean-似乎不是这样。那么，如何从Jmeter中的采样器中去除大量的后置数据，以使分布式测试工作更加稳健呢？

Answer 1

1. 默认情况下，JMeter不应将POST数据从从属服务器传输到主服务器。如果它确实仔细检查了您的结果文件配置，并确保jmeter.save.saveservice.output_format设置为csv，并且您只存储那些绝对需要的度量

---

仅供参考：您看到的函数错误，如果您想以编程方式从"文件上传"部分删除文件，则需要执行类似sampler.setHTTPFiles(new HTTPFileArg[0]);的操作

请注意，此更改后，您的文件上载将停止工作。

3. 从JMeter 3.1开始，建议使用JSR223测试元素和Groovy语言进行脚本编写，主要是因为Groovy的性能比其他脚本语言好得多，所以今后一定要使用Groovy

Answer 2

SO，我不知道如何从jmeter从机到主通信中排除post数据；我必须编写自己的JSR-223 Sampler，它使用HttpConnection类来执行名为form Java代码的http请求，然后操纵Java代码中的示例数据。Http采样器对我不起作用。

这种采样器很好，因为它还允许使用Input/OutputStreams和缓冲区读取文件并将其发送到http post-body，因此我们不再需要HttpSampler用来分配的整个上传文件的内存。

示例采样器代码为：

import java.net.HttpURLConnection;
HttpURLConnection httpConn = null;
String line = null;
try {
URL url = new URL("http://${url}/api/v2.0/datasets");
URLConnection urlConn = url.openConnection();               
if (!(urlConn instanceof HttpURLConnection)) {
throw new IOException ("URL is not an Https URL");
}               
httpConn = (HttpURLConnection)urlConn;
httpConn.setAllowUserInteraction(false);
httpConn.setInstanceFollowRedirects(true);
httpConn.setRequestMethod("POST");
httpConn.setRequestProperty("Connection", "keep-alive");
httpConn.setRequestProperty("Content-Type", "multipart/form-data; boundary=boundary");
httpConn.setRequestProperty("User-Agent", "Apache-HttpClient/4.5.5 (Java/1.8.0_161)");
httpConn.setReadTimeout(500 * 1000);
httpConn.setDoOutput(true);
OutputStreamWriter out = new OutputStreamWriter(
httpConn.getOutputStream());

out.write("--boundaryrn");
out.write("Content-Disposition: form-data; name="name"rn");
out.write("Content-Type: text/plain; charset=US-ASCIIrn");
out.write("Content-Transfer-Encoding: 8bitrn");
out.write("rn");
out.write("dataset${__time}rn");
out.write("--boundaryrn");
out.write("Content-Disposition: form-data; name="token"rn");
out.write("Content-Type: text/plain; charset=US-ASCIIrn");
out.write("Content-Transfer-Encoding: 8bitrn");
out.write("rn");
out.write("${user_token}rn");
out.write("--boundaryrn");
out.write("Content-Disposition: form-data; name="sep"rn");
out.write("Content-Type: text/plain; charset=US-ASCIIrn");
out.write("Content-Transfer-Encoding: 8bitrn");
out.write("rn");
out.write("${separator}rn");
out.write("--boundaryrn");
out.write("Content-Disposition: form-data; name="csv_file"; filename="filename.csv"rn");
out.write("Content-Type: text/plainrn");
out.write("Content-Transfer-Encoding: binaryrn");
out.write("rn");
out.write("rn");
String filepath="files//${datasetFileName}";
File file = new File(filepath);
FileInputStream fileInputStream = new FileInputStream(file);
InputStreamReader isr = new InputStreamReader(fileInputStream);
BufferedReader fin =
new BufferedReader(isr); 
String bufString;                  
while ((bufString = fin.readLine()) != null) {
out.write(bufString+"rn");
}  
out.write("--boundary--");
out.flush();
out.close();
InputStream _is;
log.info(""+httpConn.getResponseCode());
SampleResult.setResponseCode(httpConn.getResponseCode()+"");
if (httpConn.getResponseCode() >= 400) {         
_is = httpConn.getErrorStream();
SampleResult.setSuccessful(false);
} else {
/* error from server */
_is = httpConn.getInputStream();
}
if (_is!=null)
{
BufferedReader in =
new BufferedReader(
new InputStreamReader(_is)
);                   
String decodedString;
String accumulate="";
while ((decodedString = in.readLine()) != null) {
accumulate=accumulate+"n"+decodedString;
log.info(decodedString);
}       
SampleResult.setResponseData(accumulate);
}
else
{
SampleResult.setResponseData("No data from server");
}
}
catch (MalformedURLException e) {
e.printStackTrace();
log.info(e.getMessage());
} catch( SocketTimeoutException e){
e.printStackTrace();
log.info(e.getMessage());
}    
finally {//httpConn.disconnect();
}