模拟登陆部分代码：

本次使用HttpClient 4.3进行开发, 该版本与之前的代码写法风格相差较大, 大家多留意下.需导入Jar包：commons-logging-1.1.3.jar / httpclient-4.3.4.jar / httpcore-4.3.2.jar / jsoup-1.7.2.jar

private static CloseableHttpClient httpClient = HttpClients.createDefault();

/**

* 高校教务系统，模拟POST登陆

*

* @param username 学号

* @param password 密码

* @return

*/

public static int getLoginCookie(String username, String password) {

System.out.println("--------Get Cookie for Login---------");

// 登陆URL, POST数据提交地址

String loginUrl = "http://*.*.*.*/Default2.aspx";

int htmlCode= 0;

//模拟登陆，按实际服务器端要求选用 Post 或 Get 请求方式

HttpPost httpPost = new HttpPost(loginUrl);

System.out.println("request line : " + httpPost.getRequestLine());

try {

//设置登陆信息，POST提交数据

List nvps = new ArrayList ();

nvps.add(new BasicNameValuePair("__VIEWSTATE", "dDwtMTgzNTQyOTM0O3Q8O2w8aTwxPjs+O2w8dDw7bDxpPDExPjs+O2w8dDxwPDtwPGw8b25jbGljazs+O2w8d2luZG93LmNsb3NlKClcOzs+Pj47Oz47Pj47Pj47bDxDaGVja0JveDE7Pj4jTSDOG8YeEoLssydszmMECrKaiw=="));

nvps.add(new BasicNameValuePair("yh", username));

nvps.add(new BasicNameValuePair("kl", password));

nvps.add(new BasicNameValuePair("RadioButtonList1", "%D1%A7%C9%FA")); //“学生”的 urlEncode编码

nvps.add(new BasicNameValuePair("Button1", "%B5%C7++%C2%BC")); //“登录”的 urlEncode编码

nvps.add(new BasicNameValuePair("CheckBox1", "on")); // 代表接受许可

httpPost.setEntity(new UrlEncodedFormEntity(nvps));

CloseableHttpResponse response = httpClient.execute(httpPost);

try {

// 获取返回数据

HttpEntity entity = response.getEntity();

System.out.println("Response Line: " + response.getStatusLine());

System.out.println("Cookie: " + response.getFirstHeader("Set-Cookie").getValue());

htmlCode = response.getStatusLine().getStatusCode();

EntityUtils.consume(entity);

} finally {

response.close();

}

} catch (ClientProtocolException e) {

e.printStackTrace();

} catch (UnsupportedEncodingException e1) {

e1.printStackTrace();

} catch (IOException e) {

e.printStackTrace();

}

return htmlCode;

}

运行结果，会打印出Cookie。

获取成绩部分代码：

/**

* 教务系统：查询成绩

*

* @param username 学号

* @param tmpcookies Cookie

* @return

*/

public static String getResultsHtml(String username) {

System.out.println("--------Get Results Data---------");

// 成绩的 Url

String dataUrl = "http://*.*.*.*/xscj.aspx?xh=" + username;

String htmlText = "";

try {

HttpGet httpGet = new HttpGet(dataUrl);

System.out.println("request line : " + httpGet.getRequestLine());

CloseableHttpResponse response = httpClient.execute(httpGet);

try {

HttpEntity entity = response.getEntity();

System.out.println("Response Line: " + response.getStatusLine());

if (entity != null) {

htmlText = EntityUtils.toString(entity);

EntityUtils.consume(entity);

}

} finally {

response.close();

}

} catch (Exception e) {

e.printStackTrace();

}

return htmlText;

}

运行结果：

数据处理部分：

/**

* 数据处理：提取成绩信息

* @param htmlSource 获取的成绩源码

*/

public static void getResults(String htmlSource) {

System.out.println("--------Processing Results Data---------");

Document document = Jsoup.parse(htmlSource);

Elements elements = new Elements(document.getElementById("DataGrid1").getElementsByTag("td"));

for (int i = 0; i < elements.size(); i++) {

System.out.println(elements.get(i).html() + "t" + elements.get(i+1).html() + "t" + elements.get(i+2).html() + "t" +

elements.get(i+3).html() + "t" + elements.get(i+4).html() + "t" + elements.get(i+5).html() + "t" +

elements.get(i+6).html() + "t" + elements.get(i+7).html() + "t" + elements.get(i+8).html());

System.out.println("----------------------Processing end-----------------------------");

i = i+8;

}

}

运行结果：

当然你也可以使用正则之类的进行处理。