如果有一个网站的url是http://xxx.xxx.xxx,登陆的动作是login.do其中userId表示变量名 username表示内容，密码同理
1 public static String getHttpContent(String loginForm, String url, String userId, String passwordId,
2 String username, String password) throws Exception {
3 String responseString = "";
4 HttpClient conn = new HttpClient();
5 if (!loginForm.equals("")) {
6 UTF8PostMethod signinPost = new UTF8PostMethod(loginForm);
7 signinPost.addParameter(userId, username);
8 signinPost.addParameter(passwordId, password);
9 conn.executeMethod(signinPost);
10 }
11 UTF8PostMethod postMethod = new UTF8PostMethod(url);
12 int statusCode = conn.executeMethod(postMethod);
13 if (statusCode > 300) {
14 Header header = postMethod.getResponseHeader("location");
15 String location = null;
16 if (header != null) {
17 location = header.getValue();
18 System.out.println("The page was redirected to:" + location);
19 postMethod = new UTF8PostMethod(location);
20 }
21 }
22 String serverPath = HttpUtils.getServerContext(url);
23 String host = HttpUtils.gethost(url);
24 String[] item = url.split("/");
25 responseString = postMethod.getResponseBodyAsString();
26 if (responseString == null)
27 responseString = "此网址内容为空";
28 if (item.length > 4) {
29 if (responseString.replace("/" + item[3], item[0] + "//" + item[2] + "/" + item[3]) != null) {
30 responseString = responseString.replace("/" + item[3], item[0] + "//" + item[2] + "/" + item[3]);
31 }
32 } else {
33 if (responseString.replace("/" + item[3], item[0] + "//" + item[2]) != null) {
34 responseString = responseString.replace("/" + item[3], item[0] + "//" + item[2]);
35 }
36 }
37 return responseString;
38 }
