How to pipe request data from spring MVC controller to Spring RestTemplate
I have a Spring MVC application which takes requests from UI (multiform and json) and it has to post this data to another micro service using Spring RestTemplate. Copying request as string to RestTemplate works fine incase of json content type but doesnt seems to be working incase of multipart.
Here is my sample code
Spring MVC controller:
@Controller
public class MvcController {
@RequestMapping(value = "/api/microservice", method = RequestMethod.POST)
public ResponseEntity<?> callMicroservice(HttpServletRequest request) throws Exception {
RestTemplate rest = new RestTemplate();
String payload = IOUtils.toString(request.getReader());
HttpHeaders headers = new HttpHeaders();
headers.add("Content-Type", request.getHeader("Content-Type"));
HttpEntity<String> requestEntity = new HttpEntity<String>(payload, headers);
return rest.exchange("https://remote.micrservice.com/api/backendservice", HttpMethod.POST, requestEntity, String.class);
}
}
And here how backend microservice looks like
@Controller
public class RestController {
@RequestMapping(value = "/api/backendservice", method = RequestMethod.POST)
public @ResponseBody Object createService(@RequestParam(value = "jsondata") String jsondata,
@RequestParam(value = "email") String email,@RequestParam(value = "xsltFile", required = false) MultipartFile xsltFile,
HttpServletRequest request) {
// process jsondata
// process xsltFile
// send response
}
}
If you look at MvcController, i am sending payload as string
String payload = IOUtils.toString(request.getReader());
instead, how can I send request data as it is to RestTemplate request so that it works for both string and multipart. If you look at MvcController signature, I do not know what details user would be sending at the sometime I do not know what would be micro service signature. I just need to pipe the data between MvcController and RestTemplate request.
spring spring-mvc spring-boot resttemplate
add a comment |
I have a Spring MVC application which takes requests from UI (multiform and json) and it has to post this data to another micro service using Spring RestTemplate. Copying request as string to RestTemplate works fine incase of json content type but doesnt seems to be working incase of multipart.
Here is my sample code
Spring MVC controller:
@Controller
public class MvcController {
@RequestMapping(value = "/api/microservice", method = RequestMethod.POST)
public ResponseEntity<?> callMicroservice(HttpServletRequest request) throws Exception {
RestTemplate rest = new RestTemplate();
String payload = IOUtils.toString(request.getReader());
HttpHeaders headers = new HttpHeaders();
headers.add("Content-Type", request.getHeader("Content-Type"));
HttpEntity<String> requestEntity = new HttpEntity<String>(payload, headers);
return rest.exchange("https://remote.micrservice.com/api/backendservice", HttpMethod.POST, requestEntity, String.class);
}
}
And here how backend microservice looks like
@Controller
public class RestController {
@RequestMapping(value = "/api/backendservice", method = RequestMethod.POST)
public @ResponseBody Object createService(@RequestParam(value = "jsondata") String jsondata,
@RequestParam(value = "email") String email,@RequestParam(value = "xsltFile", required = false) MultipartFile xsltFile,
HttpServletRequest request) {
// process jsondata
// process xsltFile
// send response
}
}
If you look at MvcController, i am sending payload as string
String payload = IOUtils.toString(request.getReader());
instead, how can I send request data as it is to RestTemplate request so that it works for both string and multipart. If you look at MvcController signature, I do not know what details user would be sending at the sometime I do not know what would be micro service signature. I just need to pipe the data between MvcController and RestTemplate request.
spring spring-mvc spring-boot resttemplate
add a comment |
I have a Spring MVC application which takes requests from UI (multiform and json) and it has to post this data to another micro service using Spring RestTemplate. Copying request as string to RestTemplate works fine incase of json content type but doesnt seems to be working incase of multipart.
Here is my sample code
Spring MVC controller:
@Controller
public class MvcController {
@RequestMapping(value = "/api/microservice", method = RequestMethod.POST)
public ResponseEntity<?> callMicroservice(HttpServletRequest request) throws Exception {
RestTemplate rest = new RestTemplate();
String payload = IOUtils.toString(request.getReader());
HttpHeaders headers = new HttpHeaders();
headers.add("Content-Type", request.getHeader("Content-Type"));
HttpEntity<String> requestEntity = new HttpEntity<String>(payload, headers);
return rest.exchange("https://remote.micrservice.com/api/backendservice", HttpMethod.POST, requestEntity, String.class);
}
}
And here how backend microservice looks like
@Controller
public class RestController {
@RequestMapping(value = "/api/backendservice", method = RequestMethod.POST)
public @ResponseBody Object createService(@RequestParam(value = "jsondata") String jsondata,
@RequestParam(value = "email") String email,@RequestParam(value = "xsltFile", required = false) MultipartFile xsltFile,
HttpServletRequest request) {
// process jsondata
// process xsltFile
// send response
}
}
If you look at MvcController, i am sending payload as string
String payload = IOUtils.toString(request.getReader());
instead, how can I send request data as it is to RestTemplate request so that it works for both string and multipart. If you look at MvcController signature, I do not know what details user would be sending at the sometime I do not know what would be micro service signature. I just need to pipe the data between MvcController and RestTemplate request.
spring spring-mvc spring-boot resttemplate
I have a Spring MVC application which takes requests from UI (multiform and json) and it has to post this data to another micro service using Spring RestTemplate. Copying request as string to RestTemplate works fine incase of json content type but doesnt seems to be working incase of multipart.
Here is my sample code
Spring MVC controller:
@Controller
public class MvcController {
@RequestMapping(value = "/api/microservice", method = RequestMethod.POST)
public ResponseEntity<?> callMicroservice(HttpServletRequest request) throws Exception {
RestTemplate rest = new RestTemplate();
String payload = IOUtils.toString(request.getReader());
HttpHeaders headers = new HttpHeaders();
headers.add("Content-Type", request.getHeader("Content-Type"));
HttpEntity<String> requestEntity = new HttpEntity<String>(payload, headers);
return rest.exchange("https://remote.micrservice.com/api/backendservice", HttpMethod.POST, requestEntity, String.class);
}
}
And here how backend microservice looks like
@Controller
public class RestController {
@RequestMapping(value = "/api/backendservice", method = RequestMethod.POST)
public @ResponseBody Object createService(@RequestParam(value = "jsondata") String jsondata,
@RequestParam(value = "email") String email,@RequestParam(value = "xsltFile", required = false) MultipartFile xsltFile,
HttpServletRequest request) {
// process jsondata
// process xsltFile
// send response
}
}
If you look at MvcController, i am sending payload as string
String payload = IOUtils.toString(request.getReader());
instead, how can I send request data as it is to RestTemplate request so that it works for both string and multipart. If you look at MvcController signature, I do not know what details user would be sending at the sometime I do not know what would be micro service signature. I just need to pipe the data between MvcController and RestTemplate request.
spring spring-mvc spring-boot resttemplate
spring spring-mvc spring-boot resttemplate
asked Nov 16 '18 at 22:26
MurthyMurthy
328
328
add a comment |
add a comment |
1 Answer
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@RequestMapping(value = "/api/microservice", method = RequestMethod.POST)
public ResponseEntity<?> callMicroservice(HttpServletRequest request) throws Exception {
RestTemplate rest = new RestTemplate();
LinkedMultiValueMap<String, Object> map = new LinkedMultiValueMap<>();
map.add("jsondata", yourjsondata);
map.add("email", youremail);
map.add("xsltFile", new ClassPathResource(file));
HttpHeaders headers = new HttpHeaders();
headers.setContentType(MediaType.MULTIPART_FORM_DATA);
HttpEntity<LinkedMultiValueMap<String, Object>> requestEntity = new HttpEntity<LinkedMultiValueMap<String, Object>>(
map, headers);
ResponseEntity<String > result = template.get().exchange(
contextPath.get() + path, HttpMethod.POST, requestEntity,
String.class);
}
Thank you Tiny for your response. But the problem is I do not know what is coming in the request and whats been implemented in remote micro service also. If you look at MvcController, the method signature is just having request. Think of like in Zuul proxy where it just act as proxy and routes data as is from source to target. I would like to have similar approach here where MvcController, just proxy the request to remote micro service. Hope this clarifies my requirement.
– Murthy
Nov 18 '18 at 23:41
add a comment |
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1 Answer
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1 Answer
1
active
oldest
votes
active
oldest
votes
active
oldest
votes
@RequestMapping(value = "/api/microservice", method = RequestMethod.POST)
public ResponseEntity<?> callMicroservice(HttpServletRequest request) throws Exception {
RestTemplate rest = new RestTemplate();
LinkedMultiValueMap<String, Object> map = new LinkedMultiValueMap<>();
map.add("jsondata", yourjsondata);
map.add("email", youremail);
map.add("xsltFile", new ClassPathResource(file));
HttpHeaders headers = new HttpHeaders();
headers.setContentType(MediaType.MULTIPART_FORM_DATA);
HttpEntity<LinkedMultiValueMap<String, Object>> requestEntity = new HttpEntity<LinkedMultiValueMap<String, Object>>(
map, headers);
ResponseEntity<String > result = template.get().exchange(
contextPath.get() + path, HttpMethod.POST, requestEntity,
String.class);
}
Thank you Tiny for your response. But the problem is I do not know what is coming in the request and whats been implemented in remote micro service also. If you look at MvcController, the method signature is just having request. Think of like in Zuul proxy where it just act as proxy and routes data as is from source to target. I would like to have similar approach here where MvcController, just proxy the request to remote micro service. Hope this clarifies my requirement.
– Murthy
Nov 18 '18 at 23:41
add a comment |
@RequestMapping(value = "/api/microservice", method = RequestMethod.POST)
public ResponseEntity<?> callMicroservice(HttpServletRequest request) throws Exception {
RestTemplate rest = new RestTemplate();
LinkedMultiValueMap<String, Object> map = new LinkedMultiValueMap<>();
map.add("jsondata", yourjsondata);
map.add("email", youremail);
map.add("xsltFile", new ClassPathResource(file));
HttpHeaders headers = new HttpHeaders();
headers.setContentType(MediaType.MULTIPART_FORM_DATA);
HttpEntity<LinkedMultiValueMap<String, Object>> requestEntity = new HttpEntity<LinkedMultiValueMap<String, Object>>(
map, headers);
ResponseEntity<String > result = template.get().exchange(
contextPath.get() + path, HttpMethod.POST, requestEntity,
String.class);
}
Thank you Tiny for your response. But the problem is I do not know what is coming in the request and whats been implemented in remote micro service also. If you look at MvcController, the method signature is just having request. Think of like in Zuul proxy where it just act as proxy and routes data as is from source to target. I would like to have similar approach here where MvcController, just proxy the request to remote micro service. Hope this clarifies my requirement.
– Murthy
Nov 18 '18 at 23:41
add a comment |
@RequestMapping(value = "/api/microservice", method = RequestMethod.POST)
public ResponseEntity<?> callMicroservice(HttpServletRequest request) throws Exception {
RestTemplate rest = new RestTemplate();
LinkedMultiValueMap<String, Object> map = new LinkedMultiValueMap<>();
map.add("jsondata", yourjsondata);
map.add("email", youremail);
map.add("xsltFile", new ClassPathResource(file));
HttpHeaders headers = new HttpHeaders();
headers.setContentType(MediaType.MULTIPART_FORM_DATA);
HttpEntity<LinkedMultiValueMap<String, Object>> requestEntity = new HttpEntity<LinkedMultiValueMap<String, Object>>(
map, headers);
ResponseEntity<String > result = template.get().exchange(
contextPath.get() + path, HttpMethod.POST, requestEntity,
String.class);
}
@RequestMapping(value = "/api/microservice", method = RequestMethod.POST)
public ResponseEntity<?> callMicroservice(HttpServletRequest request) throws Exception {
RestTemplate rest = new RestTemplate();
LinkedMultiValueMap<String, Object> map = new LinkedMultiValueMap<>();
map.add("jsondata", yourjsondata);
map.add("email", youremail);
map.add("xsltFile", new ClassPathResource(file));
HttpHeaders headers = new HttpHeaders();
headers.setContentType(MediaType.MULTIPART_FORM_DATA);
HttpEntity<LinkedMultiValueMap<String, Object>> requestEntity = new HttpEntity<LinkedMultiValueMap<String, Object>>(
map, headers);
ResponseEntity<String > result = template.get().exchange(
contextPath.get() + path, HttpMethod.POST, requestEntity,
String.class);
}
answered Nov 17 '18 at 3:49
TinyOSTinyOS
90811029
90811029
Thank you Tiny for your response. But the problem is I do not know what is coming in the request and whats been implemented in remote micro service also. If you look at MvcController, the method signature is just having request. Think of like in Zuul proxy where it just act as proxy and routes data as is from source to target. I would like to have similar approach here where MvcController, just proxy the request to remote micro service. Hope this clarifies my requirement.
– Murthy
Nov 18 '18 at 23:41
add a comment |
Thank you Tiny for your response. But the problem is I do not know what is coming in the request and whats been implemented in remote micro service also. If you look at MvcController, the method signature is just having request. Think of like in Zuul proxy where it just act as proxy and routes data as is from source to target. I would like to have similar approach here where MvcController, just proxy the request to remote micro service. Hope this clarifies my requirement.
– Murthy
Nov 18 '18 at 23:41
Thank you Tiny for your response. But the problem is I do not know what is coming in the request and whats been implemented in remote micro service also. If you look at MvcController, the method signature is just having request. Think of like in Zuul proxy where it just act as proxy and routes data as is from source to target. I would like to have similar approach here where MvcController, just proxy the request to remote micro service. Hope this clarifies my requirement.
– Murthy
Nov 18 '18 at 23:41
Thank you Tiny for your response. But the problem is I do not know what is coming in the request and whats been implemented in remote micro service also. If you look at MvcController, the method signature is just having request. Think of like in Zuul proxy where it just act as proxy and routes data as is from source to target. I would like to have similar approach here where MvcController, just proxy the request to remote micro service. Hope this clarifies my requirement.
– Murthy
Nov 18 '18 at 23:41
add a comment |
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