nested exception is org.springframework.web.client.ResourceAccessException: I/O error

[rama kammari]

I want to access webservice by calling an URL (webservice URL) through my company proxy,
I am getting this error in my server, and on my browser : I/O error: Connection refused
i wrote this code in my RestfulClient class

 HttpClient client = new HttpClient();
	  UsernamePasswordCredentials credentials = new UsernamePasswordCredentials("username","password");
	  client.getState().setCredentials(new AuthScope("company.com", 8080, AuthScope.ANY_REALM), credentials);
	  CommonsClientHttpRequestFactory commons = new CommonsClientHttpRequestFactory(client);

	  RestTemplate restTemplate = new RestTemplate(commons);
	  // Prepare acceptable media type
	  List<MediaType> acceptableMediaTypes = new ArrayList<MediaType>();
	  acceptableMediaTypes.add(MediaType.IMAGE_GIF);
	   
	  // Prepare header
	  HttpHeaders headers = new HttpHeaders();
	  headers.setAccept(acceptableMediaTypes);
	  HttpEntity<String> entity = new HttpEntity<String>(headers); 
	   
	  // Send the request as GET
	  ResponseEntity<byte[]> result = restTemplate.exchange("http://web.vw.com/offers/ZIP_.xml", HttpMethod.GET, entity, byte[].class);
	   
	  // Display the image
	  Writer.write(response, result.getBody());

[Request processing failed; nested exception is org.springframework.web.client.ResourceAccessException: I/O error: Connection refused: connect; nested exception is java.net.ConnectException: Connection refused: connect] with root cause
java.net.ConnectException: Connection refused: connect
	at java.net.PlainSocketImpl.socketConnect(Native Method)
	at java.net.PlainSocketImpl.doConnect(PlainSocketImpl.java:351)
	at java.net.PlainSocketImpl.connectToAddress(PlainSocketImpl.java:213)
	at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:200)
	at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:366)
	at java.net.Socket.connect(Socket.java:529)
	at java.net.Socket.connect(Socket.java:478)
	at java.net.Socket.<init>(Socket.java:375)
	at java.net.Socket.<init>(Socket.java:249)
	at org.apache.commons.httpclient.protocol.DefaultProtocolSocketFactory.createSocket(DefaultProtocolSocketFactory.java:80)
	at org.apache.commons.httpclient.protocol.DefaultProtocolSocketFactory.createSocket(DefaultProtocolSocketFactory.java:122)
	at org.apache.commons.httpclient.HttpConnection.open(HttpConnection.java:707)
	at org.apache.commons.httpclient.HttpMethodDirector.executeWithRetry(HttpMethodDirector.java:387)
	at org.apache.commons.httpclient.HttpMethodDirector.executeMethod(HttpMethodDirector.java:171)
	at org.apache.commons.httpclient.HttpClient.executeMethod(HttpClient.java:397)
	at org.apache.commons.httpclient.HttpClient.executeMethod(HttpClient.java:323)
	at org.springframework.http.client.CommonsClientHttpRequest.executeInternal(CommonsClientHttpRequest.java:83)
	at org.springframework.http.client.AbstractClientHttpRequest.execute(AbstractClientHttpRequest.java:52)
	at org.springframework.web.client.RestTemplate.doExecute(RestTemplate.java:438)
	at org.springframework.web.client.RestTemplate.execute(RestTemplate.java:401)
	at org.springframework.web.client.RestTemplate.exchange(RestTemplate.java:377)
	at com.restful.example.RestClientController.getPhoto(RestClientController.java:59)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
	at java.lang.reflect.Method.invoke(Method.java:597)
	at org.springframework.web.bind.annotation.support.HandlerMethodInvoker.invokeHandlerMethod(HandlerMethodInvoker.java:176)
	at org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter.invokeHandlerMethod(AnnotationMethodHandlerAdapter.java:426)
	at org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter.handle(AnnotationMethodHandlerAdapter.java:414)
	at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:790)
	at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:719)
	at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:644)
	at org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:549)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:621)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:722)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:304)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:224)
	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:185)
	at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:472)
	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:151)
	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:100)
	at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:929)
	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118)
	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:405)
	at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:269)
	at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:515)
	at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:302)
	at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
	at java.lang.Thread.run(Thread.java:662)

[Bill Gorder]

This is not really a question about Spring or RestTemplate but about Apache Commons HTTP Client. I would use the HttpComponentsClientHttpRequestFactory instead and upgrade to Apache HTTP Components. The version you are using is no longer supported. That said I would talk to other members of your organization about how they typically work with the proxy, perhaps the method you are using is not correct, or sometimes the preferred method is to apply for a proxy exception for your application. Either way RestTemplate will just use what you have configured.

See this link and see if it will help you.

http://stackoverflow.com/questions/6962047/apache-httpclient-4-1-proxy-authentication