Java 从重定向URL获取Cookie
我有一个url,它会进行两次内部重定向,然后最终返回ok响应Java 从重定向URL获取Cookie,java,httpclient,Java,Httpclient,我有一个url,它会进行两次内部重定向,然后最终返回ok响应 第一个URL:: 重定向URL 1::带有响应302 重定向URL 2::带有响应302 最终URL::响应200 内部重定向URL 1将一些cookie发送到重定向URL 2。 我要做的是获取设置为重定向URL 2:的cookie 这是我的java代码 HttpClient client = HttpClientBuilder.create().build(); HttpGet get = new HttpGet(my
第一个URL::
重定向URL 1::带有响应302
重定向URL 2::带有响应302
最终URL::响应200
内部重定向URL 1将一些cookie发送到重定向URL 2。 我要做的是获取设置为重定向URL 2:的cookie 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()));
}
HttpClient-client=HttpClientBuilder.create().build();
HttpGet=newhttpget(myurl);
get.setHeader(“用户代理”、“Mozilla”);
get.setHeader(“Accept”,“text/html,application/xhtml+xml,application/xml;”);
get.setHeader(“接受语言”,“en-US,en;q=0.8”);
setHeader(“接受编码”、“gzip、deflate”);
get.setHeader(“连接”,“保持活动”);
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(标头:requestheaders){
System.out.println(header.getName()+“-------------------”+header.getValue());
}
HttpResponse response=client.execute(get);
系统输出打印项次(“响应7”+响应);
System.out.println(“标题为”);
Header[]headers=response.getAllHeaders();
对于(int i=0;i
此代码为我提供了最终响应,而不是中间重定向响应。因此,请任何人向我推荐更好的方法 我检查过的另一件事是:-
但我必须用java来做这件事。
httpclient 4.5如果您想要对重定向行为进行更多控制,您可能可以更改http客户端的设置 您可以创建自己的重定向策略并使用它:
HttpClient instance = HttpClientBuilder.create()
.setRedirectStrategy(new LaxRedirectStrategy()).build();
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。我也遇到过同样的问题,我有很多重定向,但我需要将每个响应中的cookie传递给重定向。我本可以做更多的工作来找出每个重定向真正需要的cookie,但我只是建立了一个所有cookie的映射,每个重定向都得到了fu我将从之前的组合重定向中获取一组cookie。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);
import java.util.HashMap;
导入java.util.Map;
导入org.apache.http.Header;
导入org.apache.http.HttpRequest;
导入org.apache.http.HttpResponse;
导入org.apache.http.ProtocolException;
导入org.apache.http.client.HttpClient;
导入org.apache.http.client.RedirectStrategy;
导入org.apache.http.client.methods.HttpUriRequest;
导入org.apache.http.impl.client.DefaultRedirectStrategy;
导入org.apache.http.impl.client.HttpClientBuilder;
导入org.apache.http.protocol.HttpContext;
导入org.springframework.http.HttpEntity;
导入org.springframework.http.ResponseEntity;
导入org.springframework.http.client.HttpComponentsClientHttpRequestFactory;
导入org.springframework.web.client.rest模板;
...
RestTemplate RestTemplate=新RestTemplate();
HttpComponents客户端HttpRequestFactory工厂=新的HttpComponents客户端HttpRequestFactory();
RedirectStrategy rs=新的DefaultRedirectStrategy(){
Map cookies=新HashMap();
@凌驾
公共HttpUriRequest getRedirect(HttpRequest请求、HttpResponse响应、,
HttpContext(上下文)抛出ProtocolException{
//
//从响应中取出cookies,以便我们可以将它们注入重定向。
//
for(Header:response.getHeaders(“Set Cookie”)){
this.cookies.put(header.getName(),header);
}
HttpUriRequest redirect=super.getRedirect(请求、响应、上下文);
for(标头cookie:this.cookies.values()){
redirect.addHeader(“Cookie”,Cookie.getValue());
}
返回重定向;
}
};
最终的HttpClient-HttpClient=HttpClientBuilder.create().setRedirectStrategy(rs.build();
工厂设置httpClient(httpClient);
restTemplate.setRequestFactory(工厂);
ResponseEntity response=restemplate.getForEntity(“,String.class”);
谢谢你的提示,DefaultRedirect策略对我很有效。