利用Java怎么获取302重定向后的URL
本篇文章为大家展示了利用Java怎么获取302重定向后的URL,内容简明扼要并且容易理解,绝对能使你眼前一亮,通过这篇文章的详细介绍希望你能有所收获。
创新互联从2013年创立,先为惠东等服务建站,惠东等地企业,进行企业商务咨询服务。为惠东企业网站制作PC+手机+微官网三网同步一站式服务解决您的所有建站问题。
方法1:
import java.net.HttpURLConnection; import java.net.URL; import org.junit.Assert; import org.junit.Test; public class GetRedirectUrlTest { @Test public void test_getRedirectUrl() throws Exception { String url="http://www.baidu.com/link?url=ByBJLpHsj5nXx6DESXbmMjIrU5W4Eh0yg5wCQpe3kCQMlJK_RJBmdEYGm0DDTCoTDGaz7rH80gxjvtvoqJuYxK"; String expectUrl="http://www.zhihu.com/question/20583607/answer/16597802"; String redictURL = getRedirectUrl(url); Assert.assertEquals(expectUrl, redictURL); } /** * 获取重定向地址 * @param path * @return * @throws Exception */ private String getRedirectUrl(String path) throws Exception { HttpURLConnection conn = (HttpURLConnection) new URL(path) .openConnection(); conn.setInstanceFollowRedirects(false); conn.setConnectTimeout(5000); return conn.getHeaderField("Location"); } }
方法2:
/** * 处理跳转链接,获取重定向地址 * @param url 源地址 * @return 目标网页的绝对地址 */ public String getAbsUrl(String url){ CloseableHttpClient httpclient = HttpClients.createDefault(); HttpClientContext context = HttpClientContext.create(); HttpGet httpget = new HttpGet(url); CloseableHttpResponse response = null; String absUrl = null; try { response = httpclient.execute(httpget, context); HttpHost target = context.getTargetHost(); ListredirectLocations = context.getRedirectLocations(); URI location = URIUtils.resolve(httpget.getURI(), target, redirectLocations); System.out.println("Final HTTP location: " + location.toASCIIString()); absUrl = location.toASCIIString(); }catch(IOException e){ e.printStackTrace(); }catch (URISyntaxException e) { e.printStackTrace(); }finally { try { httpclient.close(); response.close(); } catch (IOException e) { e.printStackTrace(); } } return absUrl; }
上述内容就是利用Java怎么获取302重定向后的URL,你们学到知识或技能了吗?如果还想学到更多技能或者丰富自己的知识储备,欢迎关注创新互联行业资讯频道。
本文标题:利用Java怎么获取302重定向后的URL
浏览路径:http://myzitong.com/article/pehjse.html