7
public
class
GetRedirectUrlTest {
8
@Test
9
public
void
test_getRedirectUrl()
throws
Exception {
10
String url="http://www.baidu.com/link?url=ByBJLpHsj5nXx6DESXbmMjIrU5W4Eh0yg5wCQpe3kCQMlJK_RJBmdEYGm0DDTCoTDGaz7rH80gxjvtvoqJuYxK"
;
11
String expectUrl="http://www.zhihu.com/question/20583607/answer/16597802"
;
12
String redictURL =
getRedirectUrl(url);
13
Assert.assertEquals(expectUrl, redictURL);
14
}
16
/**
17
* 获取重定向地址
18
*
@param
path
19
*
@return
20
*
@throws
Exception
21
*/
22
private
String getRedirectUrl(String path)
throws
Exception {
23
HttpURLConnection conn = (HttpURLConnection)
new
URL(path)
24
.openConnection();
25
conn.setInstanceFollowRedirects(
false
);
26
conn.setConnectTimeout(5000
);
27
return
conn.getHeaderField("Location"
);
28
}
1 /**
2 * 处理跳转链接，获取重定向地址
3 * @param url 源地址
4 * @return 目标网页的绝对地址
5 */
6 public String getAbsUrl(String url){
7 CloseableHttpClient httpclient = HttpClients.createDefault();
8 HttpClientContext context = HttpClientContext.create();
9 HttpGet httpget = new HttpGet(url);
10 CloseableHttpResponse response = null;
11 String absUrl = null;
12 try {
13 response = httpclient.execute(httpget, context);
14 HttpHost target = context.getTargetHost();
15 List<URI> redirectLocations = context.getRedirectLocations();
16 URI location = URIUtils.resolve(httpget.getURI(), target, redirectLocations);
17 System.out.println("Final HTTP location: " + location.toASCIIString());
18 absUrl = location.toASCIIString();
19 }catch(IOException e){
20 e.printStackTrace();
21 }catch (URISyntaxException e) {
22 e.printStackTrace();
23 }finally {
24 try {
25 httpclient.close();
26 response.close();
27 } catch (IOException e) {
28 e.printStackTrace();
29 }
30 }
31 return absUrl;
