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();

Answer 1

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.