试试HtmlUnit

HtmlUnit是“用于Java程序的GUI更少的浏览器”。它为HTML文档建模，并提供一个API，使您可以调用页面，填写表单，单击链接等，就像在“常规”浏览器中一样。

提交表单的示例代码：

@Test
public void submittingForm() throws Exception {
    final WebClient webClient = new WebClient();

    // Get the first page
    final HtmlPage page1 = webClient.getPage("http://some_url");

    // Get the form that we are dealing with and within that form, 
    // find the submit button and the field that we want to change.
    final HtmlForm form = page1.getFormByName("myform");

    final HtmlSubmitInput button = form.getInputByName("submitbutton");
    final HtmlTextInput textField = form.getInputByName("userid");

    // Change the value of the text field
    textField.setValueAttribute("root");

    // Now submit the form by clicking the button and get back the second page.
    final HtmlPage page2 = button.click();

    webClient.closeAllWindows();
}

有关更多详细信息，请检查：http :
//htmlunit.sourceforge.net/gettingStarted.html