I am trying to post an xml request to a third party server and expecting an xml response back.
I am here by attaching the source code for configuring Cnfiguration,gateways & channels, Customized Rest Template class and Test Client to execute. We have various message converters for XML Posting but despite that it is always saying no suitable HTTPMessage Converters
/**** Gateway & Channel Configuration class****/
@Configuration
@MessagingGateway(name = "EntryGateway", defaultRequestChannel = "EntryChannel", defaultRequestTimeout = "2000", defaultReplyChannel = "ExitChannel", defaultReplyTimeout = "2000")
public interface Gateway {
@Gateway(requestChannel = "EntryChannel", requestTimeout = Constants.REQUEST_TIMEOUT_IN_MILLISECONDS, replyChannel = "ExitChannel", replyTimeout = Constants.RESPONSE_TIMEOUT_IN_MILLISECONDS)
ReqResMessage sendRequest(ReqResMessage request);
}
import java.util.ArrayList;
import java.util.List;
import org.aopalliance.aop.Advice;
import org.slf4j.Logger;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.ComponentScan;
import org.springframework.context.annotation.Configuration;
import org.springframework.context.annotation.Import;
import org.springframework.context.annotation.PropertySource;
import org.springframework.core.env.Environment;
import org.springframework.http.HttpMethod;
import org.springframework.http.MediaType;
import org.springframework.http.converter.FormHttpMessageConverter;
import org.springframework.http.converter.HttpMessageConverter;
import org.springframework.http.converter.StringHttpMessageConverter;
import org.springframework.http.converter.xml.MarshallingHttpMessageConverter;
import org.springframework.integration.annotation.IntegrationComponentScan;
import org.springframework.integration.annotation.ServiceActivator;
import org.springframework.integration.channel.DirectChannel;
import org.springframework.integration.config.EnableIntegration;
import org.springframework.integration.http.outbound.HttpRequestExecutingMessageHandler;
import org.springframework.messaging.MessageChannel;
import org.springframework.messaging.MessageHandler;
import org.springframework.messaging.converter.MessageConverter;
import org.springframework.oxm.Marshaller;
import org.springframework.oxm.Unmarshaller;
import org.springframework.oxm.jaxb.Jaxb2Marshaller;
@Configuration
@ComponentScan("package_name")
@IntegrationComponentScan("package_name")
@EnableIntegration
@Import(value = ExternalSystemsConfiguration.class)
@PropertySource(value = "classpath:properties", ignoreResourceNotFound = true)
public class Configuration {
private static final Logger logger = LogbackConfig.getApplicationLogger(POPConfiguration.class);
@Autowired
Environment env;
@Autowired
ExternalSystemsConfiguration externalSystemsConfiguration;
/**
* Entry channel to the messaging system through the gateway.
*
* @return MessageChannel
*/
@Bean
public MessageChannel EntryChannel() {
return new DirectChannel();
}
@Bean
public MessageChannel RequestChannel() {
return new DirectChannel();
}
@Bean
public MessageChannel ResponseChannel() {
return new DirectChannel();
}
@Bean
public MessageChannel ExitChannel() {
return new DirectChannel();
}
@Bean
@ServiceActivator(inputChannel = "RequestChannel")
public MessageHandler cmmHttpGateway() throws Exception {
logger.debug("Entered Configuration httpGateway() ");
List<Advice> retryAdvices = new ArrayList<>();
retryAdvices.add(externalSystemsConfiguration.requestHandlerRetryAdvice());
HttpRequestExecutingMessageHandler handler = new HttpRequestExecutingMessageHandler(env.getProperty("url")
);
List<HttpMessageConverter<?>> converters = new ArrayList<>();
converters.add(marshallingMessageConverter());
handler.setMessageConverters(converters);
handler.setOutputChannel(popResponseChannel());
handler.setRequiresReply(true);
//handler.setExtractPayload(true);
// handler.
handler.setHttpMethod(HttpMethod.POST);
logger.debug("Exited Configuration httpGateway() ");
return handler;
}
@Bean
public MarshallingHttpMessageConverter marshallingMessageConverter() {
return new MarshallingHttpMessageConverter(
jaxb2Marshaller(),
jaxb2Marshaller()
);
}
@Bean
public Jaxb2Marshaller jaxb2Marshaller() {
System.out.println("jaxb2Marshaller");
Jaxb2Marshaller marshaller = new Jaxb2Marshaller();
marshaller.setClassesToBeBound(new Class[]{
ReqResMessage.class,
ReqResBody.class,
ReqResHeader.class,
Request.class,
Response.class
});
return marshaller;
}
}
/***** Rest Template Comfiguration ******/
import java.io.IOException;
import java.net.HttpURLConnection;
import java.net.InetSocketAddress;
import java.net.Proxy;
import java.security.cert.X509Certificate;
import java.util.ArrayList;
import java.util.Base64;
import java.util.List;
import java.util.Map;
import java.util.Queue;
import javax.net.ssl.SSLException;
import javax.net.ssl.SSLSession;
import javax.net.ssl.SSLSocket;
import org.apache.http.Header;
import org.apache.http.HttpHeaders;
import org.apache.http.HttpHost;
import org.apache.http.HttpResponse;
import org.apache.http.auth.AuthOption;
import org.apache.http.auth.AuthScheme;
import org.apache.http.auth.AuthScope;
import org.apache.http.auth.MalformedChallengeException;
import org.apache.http.auth.UsernamePasswordCredentials;
import org.apache.http.client.AuthCache;
import org.apache.http.client.AuthenticationStrategy;
import org.apache.http.client.HttpClient;
import org.apache.http.client.config.RequestConfig;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.client.methods.HttpHead;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.client.params.HttpClientParams;
import org.apache.http.client.protocol.HttpClientContext;
import org.apache.http.conn.params.ConnRoutePNames;
import org.apache.http.conn.ssl.X509HostnameVerifier;
import org.apache.http.impl.auth.BasicScheme;
import org.apache.http.impl.client.BasicAuthCache;
import org.apache.http.impl.client.BasicCredentialsProvider;
import org.apache.http.impl.client.CloseableHttpClient;
import org.apache.http.impl.client.DefaultHttpClient;
import org.apache.http.impl.client.DefaultRedirectStrategy;
import org.apache.http.impl.client.HttpClientBuilder;
import org.apache.http.impl.client.LaxRedirectStrategy;
import org.apache.http.impl.client.ProxyAuthenticationStrategy;
import org.apache.http.message.BasicHeader;
import org.apache.http.protocol.HttpContext;
import org.slf4j.Logger;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.context.annotation.PropertySource;
import org.springframework.core.env.Environment;
import org.springframework.http.MediaType;
import org.springframework.http.client.ClientHttpRequestFactory;
import org.springframework.http.client.HttpComponentsClientHttpRequestFactory;
import org.springframework.http.client.SimpleClientHttpRequestFactory;
import org.springframework.http.converter.FormHttpMessageConverter;
import org.springframework.http.converter.HttpMessageConverter;
import org.springframework.http.converter.StringHttpMessageConverter;
import org.springframework.http.converter.xml.Jaxb2RootElementHttpMessageConverter;
import org.springframework.http.converter.xml.MarshallingHttpMessageConverter;
import org.springframework.integration.handler.advice.RequestHandlerRetryAdvice;
import org.springframework.oxm.Marshaller;
import org.springframework.oxm.Unmarshaller;
import org.springframework.oxm.jaxb.Jaxb2Marshaller;
import org.springframework.retry.backoff.FixedBackOffPolicy;
import org.springframework.retry.policy.SimpleRetryPolicy;
import org.springframework.retry.support.RetryTemplate;
import org.springframework.web.client.RestTemplate;
@Configuration
@PropertySource(value ="classpath:integration.properties", ignoreResourceNotFound =true)
public class ExternalSystemsConfiguration {
@Autowired
Environment env;
private static final Logger logger = LogbackConfig.getApplicationLogger(ExternalSystemsConfiguration.class);
@Bean
public RequestHandlerRetryAdvice requestHandlerRetryAdvice() {
logger.debug("Entered RetryConfiguration requestHandlerRetryAdvice()");
RequestHandlerRetryAdvice retryAdvice = new RequestHandlerRetryAdvice();
RetryTemplate retryTemplate = new RetryTemplate();
FixedBackOffPolicy fixedBackOffPolicy = new FixedBackOffPolicy();
SimpleRetryPolicy simpleRetryPolicy = new SimpleRetryPolicy();
simpleRetryPolicy.setMaxAttempts(Integer.parseInt(env.getProperty("retryAttempts")));
fixedBackOffPolicy.setBackOffPeriod(Integer.parseInt(env.getProperty("backOffPolicy")));
retryTemplate.setBackOffPolicy(fixedBackOffPolicy);
retryTemplate.setRetryPolicy(simpleRetryPolicy);
retryAdvice.setRetryTemplate(retryTemplate);
return retryAdvice;
}
/**
* This method is used to create rest template with configurable read and connection timeouts.It is used by all http gateways.
* @return RestTemplate
*/
@SuppressWarnings("deprecation")
@Bean
public RestTemplate getRestTemplate(){
RestTemplate restTemplate = new RestTemplate();
BasicCredentialsProvider credentialsProvider = new BasicCredentialsProvider();
credentialsProvider.setCredentials(new AuthScope("test.com", 443), new UsernamePasswordCredentials("testuser", "testpassword"));
HttpHost target = new HttpHost("test", 443, "https");
System.out.println("BASE64:"+credentialsProvider.toString());
// Create AuthCache instance
AuthCache authCache = new BasicAuthCache();
// Generate BASIC scheme object and add it to the local auth cache
BasicScheme basicAuth = new BasicScheme();
authCache.put(target, basicAuth);
// Add AuthCache to the execution context
HttpClientContext context = HttpClientContext.create();
context.setCredentialsProvider(credentialsProvider);
context.setAuthCache(authCache);
Header header = new BasicHeader(HttpHeaders.CONTENT_TYPE, "application/xml");
List<Header> headers = new ArrayList<>();
headers.add(header);
HttpHost proxy = new HttpHost("", "", "http");
RequestConfig config = RequestConfig.custom()
.setProxy(proxy)
.build();
CloseableHttpClient httpClient = HttpClientBuilder.create().setProxy(proxy).setDefaultHeaders(headers).setProxyAuthenticationStrategy(new ProxyAuthenticationStrategy())
.setDefaultCredentialsProvider(credentialsProvider).setRedirectStrategy(new DefaultRedirectStrategy() {
private String[] REDIRECT_METHODS = new String[] {
HttpGet.METHOD_NAME, HttpHead.METHOD_NAME
};
@Override
protected boolean isRedirectable(String method) {
for (String m : REDIRECT_METHODS) {
if (m.equalsIgnoreCase(method)) {
return true;
}
}
return false;
}
})
.build();
restTemplate.setRequestFactory(new Conn());
/* List<HttpMessageConverter<?>> converters = new ArrayList<>();
converters.add(marshallingMessageConverter());
converters.add(new FormHttpMessageConverter());
converters.add(new StringHttpMessageConverter());
restTemplate.setMessageConverters(converters);*/
return restTemplate;
}
public class Conn extends SimpleClientHttpRequestFactory {
public Conn(){
Proxy proxy = new Proxy(Proxy.Type.HTTP, new InetSocketAddress("", 8080));
this.setProxy(proxy);
}
@Override
protected void prepareConnection(HttpURLConnection connection, String httpMethod) throws IOException {
// TODO Auto-generated method stub
super.prepareConnection(connection, httpMethod);
connection.setFollowRedirects(true);
String userpassword = "testuser" + ":" + "testpassword";
String encodedAuthorization = Base64.getEncoder().encodeToString(userpassword.getBytes());
System.out.println("basic-----" + encodedAuthorization);
connection.setDoOutput(true);
connection.setRequestMethod("POST");
connection.addRequestProperty("Authorization", "Basic " + encodedAuthorization);
connection.addRequestProperty("content-type", "application/xml");
}
}
}
/***** Test Client to Post XML Request in the form of Java object as well as String *****/
*/
@ContextConfiguration(classes = Configuration.class)
@RunWith(SpringJUnit4ClassRunner.class)
public class Test {
private static Logger logger = LogbackConfig.getApplicationLogger(Test.class);
@Autowired
private Gateway cmmGateway;
@Autowired
RestTemplate template;
@Test
public void testJsonResponse() {
String xml = "<?xml version=\"1.0\"?>"
+"<Message>"
+ "<Header><NCPDPID>3942100</NCPDPID><SentTime>2016-07-14 06:13:00</SentTime>"
+ "<SenderID>01hw320985</SenderID><MaxRowCount>500</MaxRowCount>"
+ "</Header><Body><Request><Distance>100.00</Distance><LastName>ALLEN</LastName>"
+ "<FirstName></FirstName><Gender></Gender><Phone></Phone><City></City>"
+ "<State></State><LicensedState></LicensedState>" + "<DEA></DEA>"
+ "" + "</Request>"
+ "</Body>" + "</Message>";/*
ReqResMessage user=null;
try{
JAXBContext jaxbContext = JAXBContext.newInstance(ReqResMessage.class);
Unmarshaller jaxbUnmarshaller = jaxbContext.createUnmarshaller();
InputStream is = new ByteArrayInputStream(xml.getBytes());
user= (ReqResMessage) jaxbUnmarshaller.unmarshal(is);
// System.out.println("REquest****"+user.getBody().getRequest());
}catch(Exception e){
e.printStackTrace();
}*/
ReqResMessage re = new ReqResMessage();
ReqResHeader header= new ReqResHeader();
header.setPharmacyNCPDPID("3942100");
header.setRowCount("500");
header.setSenderID("01hw320985");
Request request = new Request();
request.setDistance("100.00");
request.setLastName("ALLEN");
ReqResBody body = new ReqResBody();
body.setRequest(request);
re.setBody(body);
re.setHeader(header);
//System.out.println("Before:"+System.currentTimeMillis());
ReqResMessage response = cmmGateway.sendRequest(re);
}
}
Yalamanda
Finally i found solution by setting header enricher out put channel to be passed as request channel to httpoutbound gateway. Find below code snippet,there i set content-type to application/xml that resolves problem.
@Bean
@Transformer(inputChannel = "RequestChannel", outputChannel = "enricherOutputChannel")
public HeaderEnricher makeEnricher() {
Map<String, ? extends HeaderValueMessageProcessor<?>> headersToAdd = Collections
.singletonMap(HttpHeaders.CONTENT_TYPE, new StaticHeaderValueMessageProcessor<>("application/xml"));
HeaderEnricher enricher = new HeaderEnricher(headersToAdd);
enricher.setDefaultOverwrite(true);
return enricher;
}
来源：https://stackoverflow.com/questions/38894650/could-not-write-request-no-suitable-httpmessageconverter-found-for-request-type