How to send Multipart request with Httpunit in Java

Question

I am essentially asking the exact same question here. As you can see, there are no solid answers. All I want to do is send a file using HTTPUnit to test a java servlet.

So, I have a Java Servlet with this code (dumbed down):

@WebServlet("/properties/StorePropertyAttachment")
@MultipartConfig
public class StorePropertyAttachment {

    @Override
    public void doPost(HttpServletRequest req, HttpServletResponse resp) throws IOException, ServletException{
        final Part p = req.getPart("propertyImage");
         ....
    }
}

Here is the important part of my test case:

    ServletRunner servletRunner = new ServletRunner();
    servletRunner.registerServlet("StorePropertyAttachment", StorePropertyAttachment.class.getName());

    WebRequest webRequest = new PostMethodWebRequest(WEB_REQUEST_BASE_URL + STORE_PROPERTIES_ENDPOINT);
    UploadFileSpec spec = new UploadFileSpec(new File("C:/test.jpg"), "multipart/form-data");
    webRequest.setParameter("propertyImage", new UploadFileSpec[] {spec});
    ^^^^^  line 68  ^^^^^

    ServletUnitClient servletClient = servletRunner.newClient();
    WebResponse webResponse = servletClient.getResponse(webRequest);

When I run this, I get this error:

com.meterware.httpunit.IllegalNonFileParameterException: Parameter 'propertyImage' is not a file parameter and may not be set to a file value.
    at com.meterware.httpunit.WebRequest.setParameter(WebRequest.java:232)
    at com.amsgeo.mspworkmanager.services.properties.PropertyAttachmentTest.test(PropertyAttachmentTest.java:68)
    ....

Just for kick, if I change line 68 to this (a normal parameter):

webRequest.setParameter("propertyImage", "some string");

I get this error (from within my servlet my the way):

java.lang.AbstractMethodError: com.meterware.servletunit.ServletUnitHttpRequest.getPart(Ljava/lang/String;)Ljavax/servlet/http/Part;
at com.amsgeo.mspworkmanager.services.properties.StorePropertyAttachment.doPost(StorePropertyAttachment.java:40)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:647)
at com.amsgeo.webapi.services.ServiceStub.service(ServiceStub.java:64)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:728)
at com.meterware.servletunit.InvocationContextImpl.service(InvocationContextImpl.java:76)
at com.meterware.servletunit.ServletUnitClient.newResponse(ServletUnitClient.java:126)
at com.meterware.httpunit.WebClient.createResponse(WebClient.java:647)
at com.meterware.httpunit.WebWindow.getResource(WebWindow.java:220)
at com.meterware.httpunit.WebWindow.getSubframeResponse(WebWindow.java:181)
at com.meterware.httpunit.WebWindow.getResponse(WebWindow.java:158)
at com.meterware.httpunit.WebClient.getResponse(WebClient.java:122)
at com.amsgeo.mspworkmanager.services.properties.PropertyAttachmentTest.testNoParam(PropertyAttachmentTest.java:70)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
....

I don't know why it wont let me add the file.

Any suggestions??

EDIT:

I am trying to submit this using a form from a local html file. I am loading the form in successfully but am getting a 404. Here is my form declaration.

<form method="POST" action="http://localhost/StorePropertyAttachment" enctype="multipart/form-data" name="propertyImageTest">
    <input type="file" name="propertyImage" />
    <input type="submit" />
</form>

Updated test code:

    ServletRunner servletRunner = new ServletRunner();
    servletRunner.registerServlet("StorePropertyAttachment", StorePropertyAttachment.class.getName());

    WebConversation conversation = new WebConversation();
    WebRequest  request = new GetMethodWebRequest("file:/C:/test.html");
    WebResponse response = conversation.getResponse(request);
    WebForm form = response.getFormWithName("propertyImageTest");   
    UploadFileSpec uploadFileSpec = new UploadFileSpec(new File("C:/test.jpg"), "image/jpeg"); 
    form.setParameter("propertyImage", new UploadFileSpec[] {uploadFileSpec});

    WebResponse webResponse = form.submit();

`new UploadFileSpec(new File("C:/test.jpg"), "multipart/form-data");`. The second parameter value seems to be invalid. Take a look at this source code: [link](http://grepcode.com/file/repo1.maven.org/maven2/org.kohsuke.httpunit/httpunit/1.7-patch-2/com/meterware/httpunit/protocol/UploadFileSpec.java) — Sowmiya, Jun 10 '14 at 11:02

ra2085 · Accepted Answer · 2014-06-10T20:28:05.693

2

Should't the third UploadFileSpec constructor parameter be the content type and not the message type? In your case would be "image/jpeg".

You need a WebForm

WebConversation conversation = new WebConversation();
WebRequest  request = new GetMethodWebRequest("http://your-site-to-test.com/path-to-your-upload-form");
WebResponse response = conversation.getResponse(request);
WebForm form = response.getFormWithName("stockImageUpload");   
UploadFileSpec uploadFileSpec = new UploadFileSpec("test.jpg",new File("C:/test.jpg"), "image/jpeg"); 
form.setParameter("propertyImage", new UploadFileSpec[] {uploadFileSpec});

You really need to dig into the testing framework documentation as suggested in the only answer on your first post.

EDIT: the getPart() method is not supported in the servlet implementation in ServletRunner, that's why you couldn't get any part on the other side and getting an AbtractMethodError.

edited Jun 10 '14 at 20:28

answered Jun 10 '14 at 01:09

ra2085

814
4
13

In the first line of your example, what is `response`? – jlars62 Jun 10 '14 at 15:57
I just extended the code answer. You need an HTML resource on your site/server/app containing a form with "stockImageUpload" as name. HTML Forms with file parameters are submitted as multipart messages. – ra2085 Jun 10 '14 at 16:18
If you don't really want to implement any HTML resource, then perhaps you should change your Web client libraries. You can test an upload using plain HTTPUrlConnections. – ra2085 Jun 10 '14 at 16:21
You can also use a REST client library such as Jersey. – ra2085 Jun 10 '14 at 16:22
Do you know if there is a way to add a local html file? Or a way to just add static html in the code? I don't want to have to make an http request to get a form, if possible. – jlars62 Jun 10 '14 at 16:55
I am just simulating the server with ServletRunner – jlars62 Jun 10 '14 at 17:01
Then, it shouldn't be too difficult to implement a servlet with the Form you need as response. That's pretty much the way the library works. Here's a nice tutorial to follow http://httpunit.sourceforge.net/doc/tutorial/task1editor-initial.html – ra2085 Jun 10 '14 at 17:03
Or you can change your client library. HttpUnit is used to test both ends of a web app (http client and server at the same time). – ra2085 Jun 10 '14 at 17:05
You know what? why don't you try using a java.net.URL instead of a plain String as the first parameter of GetMethodWebRequest, and don't forget to use in the URL the java local file protocol: file://localhost/:/ – ra2085 Jun 10 '14 at 17:17
1

Yeah, actually that's what I was trying to do, and I got it working now. For whatever reason, it only works if there is only one slash after file - found that tip here... http://www.coderanch.com/t/95000/Testing/HttpUnit-Web-Server-howto-newbie. So I got the form now, and I am successfully setting parameters, but I am still getting a `404`. Not sure why yet. – jlars62 Jun 10 '14 at 17:24
I updated my question with my `form` declaration as well as my code for setting up my `ServletRunner`. – jlars62 Jun 10 '14 at 17:32
Did you applied the suggested changes on parameters in UploadFileSpec constructor? – ra2085 Jun 10 '14 at 17:36
also, please update the code of the test case that's shown here. – ra2085 Jun 10 '14 at 17:37
Yes. I should have shown the whole updated test code...Done now. – jlars62 Jun 10 '14 at 17:39
ok, you're not naming your form in the HTML, therefore is not being found at getFormWithName. Use response.getForms()[0] instead. – ra2085 Jun 10 '14 at 17:40
Ah sorry man, I actually just fixed that but forgot to update it here... my bad. See edit – jlars62 Jun 10 '14 at 17:42
still getting 404 on form submission? – ra2085 Jun 10 '14 at 17:44
Let us [continue this discussion in chat](http://chat.stackoverflow.com/rooms/55388/discussion-between-ra2085-and-jlars62). – ra2085 Jun 10 '14 at 17:44

How to send Multipart request with Httpunit in Java

1 Answers1