如何在 Java 中使用 Httpunit 发送 Multipart 请求

Question

我本质上是在问完全相同的问题here。如您所见，没有可靠的答案。我要做的就是使用HTTPUnit 发送一个文件来测试一个java servlet。

所以，我有一个Java Servlet，上面有这段代码（已简化）：

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

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

这是我的测试用例的重要部分：

    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);

当我运行这个时，我得到这个错误：

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)
    ....

只是为了踢，如果我将第 68 行更改为此（一个普通参数）：

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

我收到了这个错误（从我的 servlet 中）：

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)
....

我不知道为什么它不让我添加文件。

有什么建议吗？？

编辑：

我正在尝试使用本地 html 文件中的表单提交此内容。我正在成功加载表单，但收到 404。这是我的表单声明。

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

更新的测试代码：

    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

第三个 UploadFileSpec 构造函数参数不应该是内容类型而不是消息类型吗？在您的情况下将是“图像/JPEG”。

你需要一个网络表单

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});

您确实需要按照您第一篇文章的唯一答案中的建议深入研究测试框架文档。

编辑：ServletRunner 中的 servlet 实现不支持 getPart() 方法，这就是为什么您无法在另一边获得任何部分并获得 AbtractMethodError。