Вот решение, которое очень хорошо работает с Spring 3.1 и Apache HttpComponents 4.1. Я создал различные ответы на этом сайте и прочитал исходный код RestTempalte. Я разделяю надежды на то, чтобы сэкономить время других, я думаю, что в Spring просто должен быть встроен такой код, но это не так.
RestClient client = new RestClient();
client.setApplicationPath("someApp");
String url = client.login("theuser", "123456");
UserPortfolio portfolio = client.template().getForObject(client.apiUrl("portfolio"),
UserPortfolio.class);
Ниже приведен класс Factory, который устанавливает одинаковый контекст HttpComponents при каждом запросе с RestTemplate.
public class StatefullHttpComponentsClientHttpRequestFactory extends
HttpComponentsClientHttpRequestFactory
{
private final HttpContext httpContext;
public StatefullHttpComponentsClientHttpRequestFactory(HttpClient httpClient, HttpContext httpContext)
{
super(httpClient);
this.httpContext = httpContext;
}
@Override
protected HttpContext createHttpContext(HttpMethod httpMethod, URI uri)
{
return this.httpContext;
}
}
Ниже приведен шаблон Statefull Rest, который вы можете использовать для запоминания файлов cookie. После входа в систему он запомнит JSESSIONID и отправит его при последующих запросах.
public class StatefullRestTemplate extends RestTemplate
{
private final HttpClient httpClient;
private final CookieStore cookieStore;
private final HttpContext httpContext;
private final StatefullHttpComponentsClientHttpRequestFactory statefullHttpComponentsClientHttpRequestFactory;
public StatefullRestTemplate()
{
super();
httpClient = new DefaultHttpClient();
cookieStore = new BasicCookieStore();
httpContext = new BasicHttpContext();
httpContext.setAttribute(ClientContext.COOKIE_STORE, getCookieStore());
statefullHttpComponentsClientHttpRequestFactory = new StatefullHttpComponentsClientHttpRequestFactory(httpClient, httpContext);
super.setRequestFactory(statefullHttpComponentsClientHttpRequestFactory);
}
public HttpClient getHttpClient()
{
return httpClient;
}
public CookieStore getCookieStore()
{
return cookieStore;
}
public HttpContext getHttpContext()
{
return httpContext;
}
public StatefullHttpComponentsClientHttpRequestFactory getStatefulHttpClientRequestFactory()
{
return statefullHttpComponentsClientHttpRequestFactory;
}
}
Вот класс для представления отдыхающего клиента, чтобы вы могли вызвать приложение, защищенное с помощью Spring.
безопасность.
public class RestClient
{
private String host = "localhost";
private String port = "8080";
private String applicationPath;
private String apiPath = "api";
private String loginPath = "j_spring_security_check";
private String logoutPath = "logout";
private final String usernameInputFieldName = "j_username";
private final String passwordInputFieldName = "j_password";
private final StatefullRestTemplate template = new StatefullRestTemplate();
/**
* This method logs into a service by doing an standard http using the configuration in this class.
*
* @param username
* the username to log into the application with
* @param password
* the password to log into the application with
*
* @return the url that the login redirects to
*/
public String login(String username, String password)
{
MultiValueMap<String, String> form = new LinkedMultiValueMap<>();
form.add(usernameInputFieldName, username);
form.add(passwordInputFieldName, password);
URI location = this.template.postForLocation(loginUrl(), form);
return location.toString();
}
/**
* Logout by doing an http get on the logout url
*
* @return result of the get as ResponseEntity
*/
public ResponseEntity<String> logout()
{
return this.template.getForEntity(logoutUrl(), String.class);
}
public String applicationUrl(String relativePath)
{
return applicationUrl() + "/" + checkNotNull(relativePath);
}
public String apiUrl(String relativePath)
{
return applicationUrl(apiPath + "/" + checkNotNull(relativePath));
}
public StatefullRestTemplate template()
{
return template;
}
public String serverUrl()
{
return "http://" + host + ":" + port;
}
public String applicationUrl()
{
return serverUrl() + "/" + nullToEmpty(applicationPath);
}
public String loginUrl()
{
return applicationUrl(loginPath);
}
public String logoutUrl()
{
return applicationUrl(logoutPath);
}
public String apiUrl()
{
return applicationUrl(apiPath);
}
public void setLogoutPath(String logoutPath)
{
this.logoutPath = logoutPath;
}
public String getHost()
{
return host;
}
public void setHost(String host)
{
this.host = host;
}
public String getPort()
{
return port;
}
public void setPort(String port)
{
this.port = port;
}
public String getApplicationPath()
{
return applicationPath;
}
public void setApplicationPath(String contextPath)
{
this.applicationPath = contextPath;
}
public String getApiPath()
{
return apiPath;
}
public void setApiPath(String apiPath)
{
this.apiPath = apiPath;
}
public String getLoginPath()
{
return loginPath;
}
public void setLoginPath(String loginPath)
{
this.loginPath = loginPath;
}
public String getLogoutPath()
{
return logoutPath;
}
@Override
public String toString()
{
StringBuilder builder = new StringBuilder();
builder.append("RestClient [\n serverUrl()=");
builder.append(serverUrl());
builder.append(", \n applicationUrl()=");
builder.append(applicationUrl());
builder.append(", \n loginUrl()=");
builder.append(loginUrl());
builder.append(", \n logoutUrl()=");
builder.append(logoutUrl());
builder.append(", \n apiUrl()=");
builder.append(apiUrl());
builder.append("\n]");
return builder.toString();
}
}