如何以编程方式访问Java中的网页

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：

@Testpublic 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