package com.ch.net; import java.io.IOException;
import java.net.URI;
import java.util.List; import org.apache.http.client.ClientProtocolException;
import org.apache.http.client.config.CookieSpecs;
import org.apache.http.client.config.RequestConfig;
import org.apache.http.client.methods.CloseableHttpResponse;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.client.protocol.HttpClientContext;
import org.apache.http.impl.client.CloseableHttpClient;
import org.apache.http.impl.client.HttpClients; public class UrlRedirectionDemo { // 浏览器Agent public static String USER_AGENT = "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_7_3) AppleWebKit/535.19 (KHTML, like Gecko) Chrome/18.0.1025.151 Safari/535.19"; // 创建并配置HttpClient private static final CloseableHttpClient httpClient = HttpClients .custom() .setUserAgent(USER_AGENT) .setDefaultRequestConfig( RequestConfig.custom() .setCookieSpec(CookieSpecs.BROWSER_COMPATIBILITY) .build()).build(); /** * 根据给定的链接获取所有的重定向位置 * @param link 给定的链接 * @return * @throws ClientProtocolException * @throws IOException */ public List<URI> getAllRedirectLocations(String link) throws ClientProtocolException, IOException{ List<URI> redirectLocations = null; CloseableHttpResponse response = null; try{ HttpClientContext context = HttpClientContext.create(); HttpGet httpGet = new HttpGet(link); response = httpClient.execute(httpGet, context); // 获取所有的重定向位置 redirectLocations = context.getRedirectLocations(); } finally{ if(response!=null){ response.close(); } } return redirectLocations; } public static void main(String[] args) throws ClientProtocolException, IOException{ // 输入URL String link = "http://t.cn/zjYwrl3"; UrlRedirectionDemo demo = new UrlRedirectionDemo(); List<URI> allRedirectLocations = demo.getAllRedirectLocations(link); if(allRedirectLocations!=null){ System.out.println(link); for(URI uri : allRedirectLocations){ System.out.println("|\nv\n" + uri.toASCIIString()); } } else{ System.out.println("Not found!"); } }
}

http://t.cn/zjYwrl3
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