我有一个url,它会产生2个内部重定向,然后最终返回ok响应。
第一个网址:http://www.someurl.com/
重定向网址1::http://www.someurl_1.com/,回复302
重定向网址2::http://www.someurl_2.com/,回复302
最终网址:http://www.finalurl.com/,回复200
内部重定向网址1 将一些Cookie发送到重定向网址2 。
我要做的就是为重定向网址2 获取Cookie设置。
这是我的java代码。
HttpClient client = HttpClientBuilder.create().build();
HttpGet get = new HttpGet(myurl);
get.setHeader("User-Agent", "Mozilla");
get.setHeader("Accept"," text/html,application/xhtml+xml,application/xml;");
get.setHeader("Accept-Language", "en-US,en;q=0.8");
get.setHeader("Accept-Encoding"," gzip, deflate");
get.setHeader("Connection","keep-alive");
get.setHeader("Cookie",JSESSIONID+");
// get.setHeader("Accept","text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,*/*;q=0.8");
Header[] requestheaders = get.getAllHeaders();
System.out.println("requestheaders >>> ");
for(Header header: requestheaders){
System.out.println(header.getName()+"-------------------- "+header.getValue());
}
HttpResponse response = client.execute(get);
System.out.println("response 7 "+response);
System.out.println("Headers are");
Header[] headers = response.getAllHeaders();
for (int i = 0; i < headers.length; i++) {
System.out.println((headers[i].getName()+"___________________"+headers[i].getValue()));
}
此代码给出了最终响应,而不是中间重定向响应。
所以任何人都可以建议我做什么更好的方法。
我检查过的其他事情是: -
虽然在ruby中可以获取这样的重定向cookie,但我已经这样做了 但我必须在java中这样做。 httpclient 4.5
答案 0 :(得分:3)
如果您想要更好地控制重定向行为,可以更改http客户端的RedirectStrategy。
您可以创建自己的RedirectStrategy并使用它:
HttpClient instance = HttpClientBuilder.create()
.setRedirectStrategy(new LaxRedirectStrategy()).build();
答案 1 :(得分:3)
这对我有用
HttpClient client = HttpClientBuilder.create().setRedirectStrategy(new DefaultRedirectStrategy() {
public boolean isRedirected(HttpRequest request, HttpResponse response, HttpContext context) {
boolean isRedirect=false;
try {
isRedirect = super.isRedirected(request, response, context);
Header[] requestheaders = response.getAllHeaders();
System.out.println("getAuthToken >>> ");
for(Header header: requestheaders){
System.out.println(header.getName()+"-------------------- "+header.getValue());
if(header.getName().equalsIgnoreCase("Set-Cookie") && header.getValue().startsWith("auth-token")){
System.out.println("Auth_Cookie "+header.getValue().split(";")[0]);
auth_token = header.getValue().split(";")[0];
}
}
} catch (ProtocolException e) {
e.printStackTrace();
}
if (!isRedirect) {
int responseCode = response.getStatusLine().getStatusCode();
if (responseCode == 301 || responseCode == 302) {
return true;
}
}
return false;
}
}).build();
HttpGet get = new HttpGet(url);
client.execute(get);
有关更多技术细节,请查看我的博客here。
答案 2 :(得分:0)
我遇到了同样的问题,即我进行了多次重定向,但是我需要将每个响应中的Cookie传递给重定向。我可能可以做更多的工作来弄清楚每个重定向真正需要哪些cookie,但是我只是建立了所有cookie的映射,并且每个重定向都从合并的重定向中获取了完整的cookie集。这是我的代码...
import java.util.HashMap;
import java.util.Map;
import org.apache.http.Header;
import org.apache.http.HttpRequest;
import org.apache.http.HttpResponse;
import org.apache.http.ProtocolException;
import org.apache.http.client.HttpClient;
import org.apache.http.client.RedirectStrategy;
import org.apache.http.client.methods.HttpUriRequest;
import org.apache.http.impl.client.DefaultRedirectStrategy;
import org.apache.http.impl.client.HttpClientBuilder;
import org.apache.http.protocol.HttpContext;
import org.springframework.http.HttpEntity;
import org.springframework.http.ResponseEntity;
import org.springframework.http.client.HttpComponentsClientHttpRequestFactory;
import org.springframework.web.client.RestTemplate;
...
RestTemplate restTemplate = new RestTemplate();
HttpComponentsClientHttpRequestFactory factory = new HttpComponentsClientHttpRequestFactory();
RedirectStrategy rs = new DefaultRedirectStrategy() {
Map<String, Header> cookies = new HashMap<>();
@Override
public HttpUriRequest getRedirect(HttpRequest request, HttpResponse response,
HttpContext context) throws ProtocolException {
//
// Get the cookies out of the response so we can inject them into the redirect.
//
for (Header header : response.getHeaders("Set-Cookie")) {
this.cookies.put(header.getName(), header);
}
HttpUriRequest redirect = super.getRedirect(request, response, context);
for (Header cookie : this.cookies.values()) {
redirect.addHeader("Cookie", cookie.getValue());
}
return redirect;
}
};
final HttpClient httpClient = HttpClientBuilder.create().setRedirectStrategy(rs).build();
factory.setHttpClient(httpClient);
restTemplate.setRequestFactory(factory);
ResponseEntity<String> response = restTemplate.getForEntity("<my_url>", String.class);