GWT:在我的GWTTestCase中提交AJAX请求时获得404

Question

我在win XP上使用Eclipse Indigo，并试图为我的GWT 2.4应用程序编写GWT测试用例。具体来说，我试图测试一个AJAX请求，但得到一个404。我以为GWT会在托管模式下启动自己的服务器?我的代码是

public class GetHtmlTest extends GWTTestCase {
    public void gwtSetUp() {
        ...
        submitButton = new Button();
        DOM.setElementAttribute(submitButton.getElement(), "id", Productplus_gwt.SUBMIT_BUTTON_ID);
        ...
    }
    @Test
    public void testSuccessEvent() {    
        nameField.setText(VALID_ID);
        submitButton.click();
        Timer timer = new Timer() {
            public void run() {
                final Element contentDiv = DOM.getElementById(Productplus_gwt.CONTENT_DIV_ID);
                final String divText = contentDiv.getInnerText();
                assertNotNull(divText);
                assertEquals(-1, divText.toLowerCase().indexOf("error") );
                finishTest();
            }
        };
        timer.schedule(100);
        delayTestFinish(2000);
    } // testSuccessEvent

最终，单击按钮会导致这个AJAX调用…

        productPlusService.getHtml(docId, new AsyncCallback<String>() {
            public void onFailure(Throwable caught) {
                submitButtonElement.setAttribute("enabled", Boolean.TRUE.toString());
                contentDiv.setInnerHTML("<span>Error: " + caught.getMessage() + "</span>");
            }
            public void onSuccess(String result) {
                submitButtonElement.setAttribute("enabled", Boolean.TRUE.toString());
                contentDiv.setInnerHTML(result);
                // Format tabs
                postHtmlProcessing();
            }
        });

我通过右键单击它来运行测试，选择"运行为"one_answers"GWT测试用例"。控制台上的错误是

[WARN] 404 - POST /com.myco.clearing.productplus.Productplus_gwt.JUnit/getHtml (10.40.70.197) 1444 bytes
   Request headers
      Host: 10.40.70.197:2084
      User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.9.0.19) Gecko/2010031422 Firefox/3.0.19
      Accept-Language: en-us
      Accept: */*
      Connection: Keep-Alive
      Referer: http://10.40.70.197:2084/com.myco.clearing.productplus.Productplus_gwt.JUnit/junit-standards.html?gwt.codesvr=10.40.70.197:2080
      X-GWT-Permutation: HostedMode
      X-GWT-Module-Base: http://10.40.70.197:2084/com.myco.clearing.productplus.Productplus_gwt.JUnit/
      Content-Type: text/x-gwt-rpc; charset=utf-8
      Content-Length: 217
   Response headers
      Content-Type: text/html; charset=iso-8859-1
      Content-Length: 1444

你知道出了什么问题吗?谢谢，- Dave

Answer 1

对于JUnit测试，您必须使用<servlet path="..." class="..." />元素在模块的gwt.xml中声明servlet。