Why is my Session gone when using RestTemplate to access Spring MVC? - java

I am trying to access a Spring MVC app. That uses a CSRF Token. I do an initial GET to receive the Token. Then add it to my POST with my JSESSIONID. However, during debug the Server app doesn't find my JSESSIONID. And therefore, doesn't authenticate my token, and gives me 403.
I can't tell but it looks like my GET JSESSIONID doesn't get saved in the server HTTP Session repository.
Is there a way, to validate:
The session is in the server context?
Am I sending the correct header data?
Here's my code:
public String testLogin() {
ResponseEntity<String> response =
restTemplate.getForEntity(LOGIN_RESOURCE_URL, String.class);
List<String> cookies = new ArrayList<String>();
cookies = response.getHeaders().get("Set-Cookie");
String[] firstString = cookies.get(0).split("=|;");
String jsessionPart = firstString[1];
String[] secondString = cookies.get(1).split("=|;");
String tokenPart = secondString[1];
BasicCookieStore cookieStore = new BasicCookieStore();
BasicClientCookie cookie = new BasicClientCookie("JSESSIONID",
jsessionPart);
cookie.setDomain(".mydomain.com");
cookie.setPath("/");
cookieStore.addCookie(cookie);
BasicClientCookie cookie2 = new BasicClientCookie("X-XSRF-TOKEN",
tokenPart);
cookie2.setDomain(".mydomain.com");
cookie2.setPath("/");
cookieStore.addCookie(cookie2);
HttpClient client = HttpClientBuilder
.create()
.setDefaultCookieStore(cookieStore)
.disableRedirectHandling()
.build();
HttpComponentsClientHttpRequestFactory factory = new
HttpComponentsClientHttpRequestFactory();
factory.setHttpClient(client);
RestTemplate postTemplate = new RestTemplate(factory);
HttpEntity<?> requestEntity = new HttpEntity<Object>(body, headers);
ResponseEntity<String> response = postTemplate.exchange(loginUserUrl,
HttpMethod.POST, requestEntity,String.class);
To your code sample I added user name and password plus changed the content type. The 403 still happens whether i sent content type or not:
HttpHeaders headers = new HttpHeaders();
headers.setContentType(MediaType.APPLICATION_FORM_URLENCODED);
// if you need to pass form parameters in request with headers.
MultiValueMap<String, String> map = new LinkedMultiValueMap<>();
try {
map.add( URLEncoder.encode("username", "UTF-8"),
URLEncoder.encode("userdev", "UTF-8") );
map.add(URLEncoder.encode("password", "UTF-8"),
URLEncoder.encode("devpwd","UTF-8") );
} catch (UnsupportedEncodingException e) {
e.printStackTrace();
}
HttpEntity<MultiValueMap<String, String>> requestEntity = new HttpEntity<>
(map, headers);
ResponseEntity<String> response =
this.restTemplate(builder).exchange(RESOURCE_URL, HttpMethod.POST,
requestEntity, String.class);

Instead of messing around with cookies yourself let the framework, Apache HttpClient, handle this for you. Configure the RestTemplate to work with a properly configured HttpClient.
Something like this should do the trick
#Bean
public RestTemplate restTemplate(RestTemplateBuilder builder) {
return builder.requestFactory(this::requestFactory)
.build();
}
#Bean
public HttpComponentsClientHttpRequestFactory requestFactory() {
RequestConfig defaultRequestConfig = RequestConfig.custom()
.setCookieSpec(CookieSpecs.DEFAULT)
.setExpectContinueEnabled(true)
.build();
CloseableHttpClient httpClient = HttpClientBuilder.create()
.setDefaultCookieStore(new BasicCookieStore())
.setDefaultRequestConfig(defaultRequestConfig).build();
HttpComponentsClientHttpRequestFactory requestFactory = new HttpComponentsClientHttpRequestFactory();
requestFactory.setHttpClient(httpClient);
return requestFactory;
}
This will configure the RestTemplate to use a HttpClient that stores cookies in a CookieStore in between requests. Reuse the configured RestTemplate and don't create a new one because you might need it.

Related

Spring RestTemplate with NTML Authentication

I am consuming a service which is NTML Authentication .
Below is my configuration
But i am getting 400 Bad Request
PoolingHttpClientConnectionManager cm = new PoolingHttpClientConnectionManager();
RequestConfig.Builder requestBuilder = RequestConfig.custom().setConnectTimeout(5000).setSocketTimeout(10000);
Registry<AuthSchemeProvider> authSchemeRegistry = RegistryBuilder.<AuthSchemeProvider> create().register(AuthSchemes.NTLM, new NTLMSchemeFactory())
.register(AuthSchemes.NTLM, new SPNegoSchemeFactory()).build();
CredentialsProvider credentialsProvider = new BasicCredentialsProvider();
credentialsProvider.setCredentials(AuthScope.ANY, new NTCredentials("MyUsername", "MyPassword", "", "MyDomain"));
HttpClientBuilder builder = HttpClientBuilder.create().setConnectionManager(cm).setDefaultRequestConfig(requestBuilder.build())
.setDefaultAuthSchemeRegistry(authSchemeRegistry).setDefaultCredentialsProvider(credentialsProvider);
HttpHeaders headers = new HttpHeaders();
HttpEntity<String> entity = new HttpEntity<>("parameters", headers);
RestTemplate restTemplate = new RestTemplate();
restTemplate.setRequestFactory(new HttpComponentsClientHttpRequestFactory(builder.build()));
List<ClientHttpRequestInterceptor> interceptors
= restTemplate.getInterceptors();
if (CollectionUtils.isEmpty(interceptors)) {
interceptors = new ArrayList<>();
restTemplate.setInterceptors(interceptors);
}
restTemplate.getInterceptors().add(clientHttpRequestInterceptor);
The same service i am able to consume using apache http client.
Does spring supports NTML Authentication .?

Retrieve a cookie using Spring RestTemplate

I need to get a cookie from a server using Spring RestTemplate. Do you guys know how I can perform this?
Thank you for your help!
final String url = "http://codeflex.co:8080/rest/Management/login";
RestTemplate template = new RestTemplate();
Credentials cred = new Credentials();
cred.setUserName("admin#codeflex.co");
cred.setPassword("godmode");
HttpEntity<Credentials> request = new HttpEntity<>(cred);
HttpEntity<String> response = template.exchange(url, HttpMethod.POST, request, String.class);
HttpHeaders headers = response.getHeaders();
String set_cookie = headers.getFirst(HttpHeaders.SET_COOKIE);
code from the example
HttpHeaders requestHeaders = new HttpHeaders();
requestHeaders.add("Cookie", "JSESSIONID=" + session.getValue());
HttpEntity requestEntity = new HttpEntity(null, requestHeaders);
ResponseEntity rssResponse = restTemplate.exchange(
"https://jira.example.com/sr/jira.issueviews:searchrequest-xml/18107/SearchRequest-18107.xml?tempMax=1000",
HttpMethod.GET,
requestEntity,
Rss.class);
Rss rss = rssResponse.getBody();
from http://springinpractice.com/2012/04/08/sending-cookies-with-resttemplate

How to get redirected url from RestTemplate?

I would like to call RestTemplate with http GET and retrieve status code and redirected url (if there was one).
How to achieve that?
Using Spring and overriding prepareConnection() in SimpleClientHttpRequestFactory...
RestTemplate restTemplate = new RestTemplate( new SimpleClientHttpRequestFactory(){
#Override
protected void prepareConnection( HttpURLConnection connection, String httpMethod ) {
connection.setInstanceFollowRedirects(false);
}
} );
ResponseEntity<Object> response = restTemplate.exchange( "url", HttpMethod.GET, null, Object.class );
int statusCode = response.getStatusCodeValue();
String location = response.getHeaders().getLocation() == null ? "" : response.getHeaders().getLocation().toString();
Create Apache HttpClient with custom RedirectStrategy where you can intercept intermediate response(s) when redirect occurred.
Replace default request factory with HttpComponentsClientHttpRequestFactory and new Apache HttpClient.
Have a look at org.apache.http.client.RedirectStrategy for more information. Or reuse DefaultRedirectStrategy as in the following example:
CloseableHttpClient httpClient = HttpClientBuilder
.create()
.setRedirectStrategy( new DefaultRedirectStrategy() {
#Override
public boolean isRedirected(HttpRequest request, HttpResponse response,
HttpContext context) throws ProtocolException {
System.out.println(response);
// If redirect intercept intermediate response.
if (super.isRedirected(request, response, context)){
int statusCode = response.getStatusLine().getStatusCode();
String redirectURL = response.getFirstHeader("Location").getValue();
System.out.println("redirectURL: " + redirectURL);
return true;
}
return false;
}
})
.build();
HttpComponentsClientHttpRequestFactory factory = new HttpComponentsClientHttpRequestFactory(httpClient);
RestTemplate restTemplate = new RestTemplate(factory);
.......
var responseEntity = restTemplate.exchange("someurl", HttpMethod.GET, null, Object.class);
HttpHeaders headers = responseEntity.getHeaders();
URI location = headers.getLocation();
location.toString();

Spring RestTemplate postForObject with Header: webservice can't find my header parameters

I'm struggling with RestTemplate. I need to POST some authentication information to a rest webservice. I can send a request and I get a response. But according to the response my header parameters are not getting through. (Sending the same request with SOAPUI works fine)
This is my code:
HttpHeaders headers = new HttpHeaders();
headers.setContentType(MediaType.APPLICATION_FORM_URLENCODED);
headers.add("companyId", companyId);
headers.add("password", password);
HttpEntity<String> request = new HttpEntity<String>(headers);
RestTemplate restTemplate = new RestTemplate();
List<HttpMessageConverter<?>> messageConverters = new ArrayList<HttpMessageConverter<?>>();
messageConverters.add(new MappingJacksonHttpMessageConverter());
restTemplate.setMessageConverters(messageConverters);
LoginResponse response = (LoginResponse)restTemplate.postForObject(url, request, LoginResponse.class);
Anyone who can tell me what's wrong with my HttpEntity or HttpHeader?
thank you.
SOLVED:
Ok, finally got it working.
MultiValueMap<String, String> map = new LinkedMultiValueMap<String, String>();
map.add("companyId", companyId);
map.add("password", password);
HttpHeaders headers = new HttpHeaders();
headers.setContentType(MediaType.APPLICATION_FORM_URLENCODED);
HttpEntity<MultiValueMap<String, String>> request = new HttpEntity<MultiValueMap<String, String>>(map, headers);
List<HttpMessageConverter<?>> messageConverters = new ArrayList<HttpMessageConverter<?>>();
messageConverters.add(new MappingJacksonHttpMessageConverter());
messageConverters.add(new FormHttpMessageConverter());
restTemplate.setMessageConverters(messageConverters);
LoginResponse response = (LoginResponse) restTemplate.postForObject(url, request, LoginResponse.class);
Because I also had a hard time on the response, maybe it can be useful to others:
#JsonIgnoreProperties(ignoreUnknown = true)
public class ItcLoginResponse {
public String loginToken;
#JsonProperty("token")
public String getLoginToken() {
return loginToken;
}
public void setLoginToken(String loginToken) {
this.loginToken = loginToken;
}
}
You're setting a header indicating you're posting a form (APPLICATION_FORM_URLENCODED), but then setting companyId and password as HTTP headers.
I suspect you want those fields to be in the body of your request.
You're also creating an HttpEntity<String> which indicates you're going to post a request body containing a String, but you're providing headers but no String.
If that doesn't help you fix it perhaps you can explain what the request is supposed to look like.

Making authenticated POST requests with Spring RestTemplate for Android

I have a RESTful API I'm trying to connect with via Android and RestTemplate. All requests to the API are authenticated with HTTP Authentication, through setting the headers of the HttpEntity and then using RestTemplate's exchange() method.
All GET requests work great this way, but I cannot figure out how to accomplish authenticated POST requests. postForObject and postForEntity handle POSTs, but have no easy way to set the Authentication headers.
So for GETs, this works great:
HttpAuthentication httpAuthentication = new HttpBasicAuthentication("username", "password");
HttpHeaders requestHeaders = new HttpHeaders();
requestHeaders.setAuthorization(httpAuthentication);
HttpEntity<?> httpEntity = new HttpEntity<Object>(requestHeaders);
MyModel[] models = restTemplate.exchange("/api/url", HttpMethod.GET, httpEntity, MyModel[].class);
But POSTs apparently don't work with exchange() as it never sends the customized headers and I don't see how to set the request body using exchange().
What is the easiest way to make authenticated POST requests from RestTemplate?
Ok found the answer. exchange() is the best way. Oddly the HttpEntity class doesn't have a setBody() method (it has getBody()), but it is still possible to set the request body, via the constructor.
// Create the request body as a MultiValueMap
MultiValueMap<String, String> body = new LinkedMultiValueMap<String, String>();
body.add("field", "value");
// Note the body object as first parameter!
HttpEntity<?> httpEntity = new HttpEntity<Object>(body, requestHeaders);
ResponseEntity<MyModel> response = restTemplate.exchange("/api/url", HttpMethod.POST, httpEntity, MyModel.class);
Slightly different approach:
MultiValueMap<String, String> headers = new LinkedMultiValueMap<String, String>();
headers.add("HeaderName", "value");
headers.add("Content-Type", "application/json");
RestTemplate restTemplate = new RestTemplate();
restTemplate.getMessageConverters().add(new MappingJackson2HttpMessageConverter());
HttpEntity<ObjectToPass> request = new HttpEntity<ObjectToPass>(objectToPass, headers);
restTemplate.postForObject(url, request, ClassWhateverYourControllerReturns.class);
I was recently dealing with an issue when I was trying to get past authentication while making a REST call from Java, and while the answers in this thread (and other threads) helped, there was still a bit of trial and error involved in getting it working.
What worked for me was encoding credentials in Base64 and adding them as Basic Authorization headers. I then added them as an HttpEntity to restTemplate.postForEntity, which gave me the response I needed.
Here's the class I wrote for this in full (extending RestTemplate):
public class AuthorizedRestTemplate extends RestTemplate{
private String username;
private String password;
public AuthorizedRestTemplate(String username, String password){
this.username = username;
this.password = password;
}
public String getForObject(String url, Object... urlVariables){
return authorizedRestCall(this, url, urlVariables);
}
private String authorizedRestCall(RestTemplate restTemplate,
String url, Object... urlVariables){
HttpEntity<String> request = getRequest();
ResponseEntity<String> entity = restTemplate.postForEntity(url,
request, String.class, urlVariables);
return entity.getBody();
}
private HttpEntity<String> getRequest(){
HttpHeaders headers = new HttpHeaders();
headers.add("Authorization", "Basic " + getBase64Credentials());
return new HttpEntity<String>(headers);
}
private String getBase64Credentials(){
String plainCreds = username + ":" + password;
byte[] plainCredsBytes = plainCreds.getBytes();
byte[] base64CredsBytes = Base64.encodeBase64(plainCredsBytes);
return new String(base64CredsBytes);
}
}
Very useful
I had a slightly different scenario where I the request xml was itself the body of the POST and not a param. For that the following code can be used - Posting as an answer just in case anyone else having similar issue will benefit.
final HttpHeaders headers = new HttpHeaders();
headers.add("header1", "9998");
headers.add("username", "xxxxx");
headers.add("password", "xxxxx");
headers.add("header2", "yyyyyy");
headers.add("header3", "zzzzz");
headers.setContentType(MediaType.APPLICATION_XML);
headers.setAccept(Arrays.asList(MediaType.APPLICATION_XML));
final HttpEntity<MyXmlbeansRequestDocument> httpEntity = new HttpEntity<MyXmlbeansRequestDocument>(
MyXmlbeansRequestDocument.Factory.parse(request), headers);
final ResponseEntity<MyXmlbeansResponseDocument> responseEntity = restTemplate.exchange(url, HttpMethod.POST, httpEntity,MyXmlbeansResponseDocument.class);
log.info(responseEntity.getBody());

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