I need to render ModelAndView in my controller manually in order to put it inside JSON object. If I pass the whole ModelAndView object into to JSON I get " no serializer found for class javassistlazyinitializer" exception because jackson can't work properly with LAZY-objects.
Thank you
public class JSONView implements View {
/**
* Logger for this class
*/
private static final Logger logger = Logger.getLogger(JSONView.class);
private String contentType = "application/json";
public void render(Map map, HttpServletRequest request, HttpServletResponse response)
throws Exception {
if(logger.isDebugEnabled()) {
logger.debug("render(Map, HttpServletRequest, HttpServletResponse) - start");
}
JSONObject jsonObject = new JSONObject(map);
PrintWriter writer = response.getWriter();
writer.write(jsonObject.toString());
if(logger.isDebugEnabled()) {
logger.debug("render(Map, HttpServletRequest, HttpServletResponse) - end");
}
}
public String getContentType() {
return contentType;
}
}
ModelAndView returnModelAndView = new ModelAndView(new JSONView(), model);
Related
I need to create an interceptor that will intercept HTTP requests and responses, but it seems to me that I'm doing something wrong, can someone tell me what I should change or add?
public class HttpInterceptor extends HandlerInterceptorAdapter implements ClientHttpRequestInterceptor
{
#Override
public ClientHttpResponse intercept(final HttpRequest httpRequest, final byte[] bytes, final ClientHttpRequestExecution clientHttpRequestExecution) throws IOException
{
RestTemplate restTemplate = new RestTemplate();
final ClientHttpResponse response = clientHttpRequestExecution.execute(httpRequest, bytes);
final String httpResponseName = response.toString();
final HttpHeaders httpHeaders = response.getHeaders();
final HttpStatus httpStatusCode = response.getStatusCode();
final String statusText = response.getStatusText();
final String body = httpHeaders.toString() + httpStatusCode.toString() + statusText;
//And then i will put body to DB
return response;
}
xml
<bean id="httpInterceptor" class="HttpInterceptor"/>
<bean id="httpInterceptor" class="de.hybris.platform.servicelayer.interceptor.impl.InterceptorMapping">
<property name="interceptor" ref="httpInterceptor"/>
<property name="typeCode" value="Message"/>
</bean>
I understood that you try to create service (it can be rest, soap or any other). If I am right, you need to create controller for handling http request.
#Controller("MyController")
public class MyController extends AbstractController {
#RequestMapping(value = "/mymethod/{id}", method = RequestMethod.GET)
public void myMethod(#PathVariable final String id, final HttpServletRequest request, final HttpServletResponse out) throws Exception {
try {
if (StringUtils.isEmpty(id))
throw new UnknownIdentifierException("id is null!");
out.setContentType(MediaType.APPLICATION_TXT_VALUE);
IOUtils.copy(myStream, out.getOutputStream());
} catch (UnknownIdentifierException ex) {
out.setStatus(HttpServletResponse.SC_BAD_REQUEST);
out.setContentType(MediaType.TEXT_PLAIN_VALUE);
String message = "My error text!";
IOUtils.copy(new ByteArrayInputStream(message.getBytes()), out.getOutputStream());
}
}
I recommande to implements Filter to transform or use the information contained in the requests or responses. and not Interceptor , it provide more information then Interceptor Here's an exemple of the use of Filter for logging :
#Component
public class HttpLoggingFilter implements Filter {
private static final Logger logger = LoggerFactory.getLogger(HttpLoggingFilter.class);
#Value("${output.trace.actif}")
private boolean isOutputActif;
private static String getRequestData(final HttpServletRequest request) throws UnsupportedEncodingException {
String payload = null;
ContentCachingRequestWrapper wrapper = WebUtils.getNativeRequest(request, ContentCachingRequestWrapper.class);
if (wrapper != null) {
byte[] buf = wrapper.getContentAsByteArray();
if (buf.length > 0) {
payload = new String(buf, 0, buf.length, wrapper.getCharacterEncoding());
}
}
return payload;
}
private static String getResponseData(final HttpServletResponse response) throws IOException {
String payload = null;
ContentCachingResponseWrapper wrapper = WebUtils.getNativeResponse(response, ContentCachingResponseWrapper.class);
if (wrapper != null) {
byte[] buf = wrapper.getContentAsByteArray();
if (buf.length > 0) {
payload = new String(buf, 0, buf.length, wrapper.getCharacterEncoding());
wrapper.copyBodyToResponse();
}
}
return payload;
}
#Override
public void init(FilterConfig filterConfig) {
logger.info("start http filter");
}
#Override
public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain) throws IOException, ServletException {
HttpServletRequest httpServletRequest = (HttpServletRequest) request;
HttpServletResponse httpServletResponse = (HttpServletResponse) response;
ContentCachingRequestWrapper requestToCache = new ContentCachingRequestWrapper(httpServletRequest);
ContentCachingResponseWrapper responseToCache = new ContentCachingResponseWrapper(httpServletResponse);
HttpUtil.majMDCRestInfo(httpServletRequest);
long start = System.currentTimeMillis();
chain.doFilter(requestToCache, responseToCache);
long elapsedTime = System.currentTimeMillis() - start;
String requestBody = new String(requestToCache.getContentAsByteArray());
String responseBody = new String(responseToCache.getContentAsByteArray());
final StringBuilder logMessage = new StringBuilder().append("[METHOD:").append(httpServletRequest.getMethod())
.append("] [PARAMS:")
.append(httpServletRequest.getQueryString()).append("] [BODY:").append(requestBody).append("]");
if (isOutputActif) {
String respContent = responseBody;
if (respContent.equals("")) {
respContent = "no data";
}
logMessage.append(" [RESPONSE:").append(respContent).append("]");
}
logMessage.append(" [STATUS:").append(responseToCache.getStatus()).append("] [Time:").append(elapsedTime).append("ms]");
String[] nonLoggingPaths = {"/api/"};
String urlPath = httpServletRequest.getRequestURL().toString();
if ((Arrays.stream(nonLoggingPaths).parallel().anyMatch(urlPath::contains))) {
logger.info("{}", logMessage);
}
getRequestData(requestToCache);
getResponseData(responseToCache);
}
}
I'm sending a response to another web service to create an user. If the user already exists it sends back the 409 response. I'm using RestTemplate like so:
#PostMapping("/todos/{toDoNoteId}/users")
public ResponseEntity <String> postUser(#RequestBody User user, #PathVariable int toDoNoteId, UriComponentsBuilder builder)throws HttpMessageNotReadableException, ParseException{
RestTemplate restTemplate = new RestTemplate();
final String uri = "http://friend:5000/users";
try {
ResponseEntity<String> result = restTemplate.postForEntity(uri, user, String.class);
return result;
}
catch (HttpClientErrorException ex) {
return ResponseEntity.status(ex.getRawStatusCode()).headers(ex.getResponseHeaders())
.body(ex.getResponseBodyAsString());
}
}
While catching an exception somewhat works (in the catch block i can access the status code and body), is there a way to access it without exceptions something similar like this:
#PostMapping("/todos/{toDoNoteId}/users")
public ResponseEntity <String> postUser(#RequestBody User user, #PathVariable int toDoNoteId, UriComponentsBuilder builder)throws HttpMessageNotReadableException, ParseException{
RestTemplate restTemplate = new RestTemplate();
final String uri = "http://friend:5000/users";
ResponseEntity<String> result = restTemplate.postForEntity(uri, user, String.class);
if(result.getStatusCode()=="409"){
// do something
}
else{
// do something else
}
return result;
}
Have you been check the ExceptionHandler? When exception throws, ExceptionHandler handles it.
For example:
#ControllerAdvice()
public class CustomExceptionHandler {
private static final Logger logger = LogManager.getLogger("CustomExceptionHandler");
#ExceptionHandler(YourException.class)
public ResponseEntity handleYourException(HttpServletRequest request, YourException ex) {
return ResponseEntity.ok("");
}
#ExceptionHandler(Exception.class)
public ResponseEntity handleException(HttpServletRequest request, Exception ex) {
logExp("Exception", request, ex);
//return new ResponseEntity<>();
return null;
}
}
You can create your own custom resttemplate and define exception handler. Here is a code snippet.
#Configuration
public class CustomRestTemplate extends RestTemplate {
#Autowired
private CustomErrorHandler customErrorHandler;
#PostConstruct
public void init() {
this.setErrorHandler(customErrorHandler);
}
}
#Component
public class CustomErrorHandler implements ResponseErrorHandler {
#Override
public boolean hasError(ClientHttpResponse response) throws IOException {
if(response.getStatusCode() != "409"){
return true;
}else {
return false;
}
}
#Override
public void handleError(ClientHttpResponse response) throws IOException {
String responseBody = response.getBody();//Pls read from InputStream and create write into String
JSONObject jsonObj = new JSONObject(result);
JSONArray jsonArray = new JSONArray();
jsonObj.put("status", response.getStatusCode());
jsonObj.put("body", responseBody );
jsonArray.put(jsonObj);
responseString = jsonArray.get(0).toString();
throw new MyException(responseString );
}
}
class MyException throw RuntimeException {
public MyException (String message) {
super(message);
}
}
So, your class will changed to
#PostMapping("/todos/{toDoNoteId}/users")
public ResponseEntity <String> postUser(#RequestBody User user, #PathVariable int toDoNoteId, UriComponentsBuilder builder)throws HttpMessageNotReadableException, ParseException{
CustomRestTemplate restTemplate = new CustomRestTemplate ();
final String uri = "http://friend:5000/users";
ResponseEntity<String> result = restTemplate.postForEntity(uri, user, String.class);
return result
}
I have a spring boot application. And now I need to read request and response in interceptor.I use a HttpServletRequestWrapper replace the request in DispatcherServlet
#Component("dispatcherServlet")
public class FofDisPatcherServlet extends DispatcherServlet {
#Override
protected void doDispatch(HttpServletRequest request, HttpServletResponse response) throws Exception {
MultiReadHttpServletRequest requestWrapper = null;
try {
requestWrapper = new MultiReadHttpServletRequest(request);
super.doDispatch(requestWrapper, response);
} catch (Exception e) {
super.doDispatch(request,response);
}
}
}
And in my interceptor , I can read the request body. But when I want to read the response body, it doesn't works.when I replace the response in the CustomerDispatcherServlet I got nothing response.I have tried ContentCachingResponseWrapper , but I got the payload with "".
It's a old question.and I have search some questions but didn't find a suitable solution.
I know I can solve the problem with AOP.But I want to know how can I do it in the interceptor?
here is my interceptor code
public class CustomerInterceptor extends HandlerInterceptorAdapter{
#Override
public void postHandle(...){
MultiReadHttpServletRequest req = (MultiReadHttpServletRequest) request;
ContentCachingResponseWrapper res = new ContentCachingResponseWrapper(response);
Byte[] body = res. getContentAsByteArray();
...
}
}
the body I got is [].
After few days .I find the answer.In the CustomerDispatcherServlet I should add responseWrapper.copyBodyToResponse()
the CustomerDIspatcherServlet like this:
#Component("dispatcherServlet")
public class FofDisPatcherServlet extends DispatcherServlet {
#Override
protected void doDispatch(HttpServletRequest request, HttpServletResponse response) throws Exception {
MultiReadHttpServletRequest requestWrapper = null;
try {
requestWrapper = new MultiReadHttpServletRequest(request);
if (!(response instanceof ContentCachingResponseWrapper)) {
ContentCachingResponseWrapper responseWrapper = new ContentCachingResponseWrapper(response);
super.doDispatch(requestWrapper, responseWrapper);
responseWrapper.copyBodyToResponse();
}else {
super.doDispatch(requestWrapper, response);
}
} catch (Exception e) {
super.doDispatch(request, response);
}
}
}
Try this:
#Component("dispatcherServlet")
public class FofDisPatcherServlet extends DispatcherServlet {
#Override
protected void doDispatch(HttpServletRequest request, HttpServletResponse response) throws Exception {
MultiReadHttpServletRequest requestWrapper = null;
try {
requestWrapper = new MultiReadHttpServletRequest(request);
super.doDispatch(requestWrapper, new ContentCachingResponseWrapper(request));
} catch (Exception e) {
super.doDispatch(request,response);
}
}
}
.
public class CustomerInterceptor extends HandlerInterceptorAdapter{
#Override
public void postHandle(..., HttpServletResponse response){
if (response instanceof ContentCachingResponseWrapper) {
Byte[] body = ((ContentCachingResponseWrapper)response). getContentAsByteArray();
}
...
}
}
The error is in your code
public class CustomerInterceptor extends HandlerInterceptorAdapter{
#Override
public void postHandle((HttpServletRequest request, HttpServletResponse response, Object handler, ModelAndView modelAndView){
MultiReadHttpServletRequest req = (MultiReadHttpServletRequest) request;
ContentCachingResponseWrapper res = new ContentCachingResponseWrapper(response);
Byte[] body = res. getContentAsByteArray();
...
}
}
You are passing request in ContentCachingResponseWrapper.
See this question very similar problem .
Using Spring (4.2.4) with MVC (4.2.4) and Security (4.0.3). I have implemented an AccessDecisionManager and from within my decide-method I am throwing an exception:
public void decide(
Authentication authentication,
Object object,
Collection<ConfigAttribute> configAttributes
) throws AccessDeniedException, InsufficientAuthenticationException {
FilterInvocation fi = (FilterInvocation) object;
String requestUrl = fi.getRequestUrl();
...
throw new SessionCompanyNotRoleTableCompanyException(1, 2);
...
throw new AccessDeniedException("Access denied!");
}
I'm not able to catch neither "SessionCompanyNotRoleTableCompanyException" nor AccessDeniedException. I've tried using a global exception handler:
#Component
#ControllerAdvice
public class GlobalExceptionHandler {
private static final Logger log = LoggerFactory.getLogger(GlobalExceptionHandler.class);
#ExceptionHandler(SessionCompanyNotRoleTableCompanyException.class)
public ModelAndView sessionCompanyNotRoleTableCompany() {
log.debug("SessionCompanyNotRoleTableCompanyException captured in GlobalExceptionHandler");
String reason = "Reason: SessionCompanyNotRoleTableCompanyException";
ModelAndView mav = new ModelAndView();
mav.addObject("reason", reason);
mav.setViewName("error.html");
return mav;
}
#ExceptionHandler(Exception.class)
public ModelAndView exception(ModelMap model) {
log.debug("Exception captured in GlobalExceptionHandler");
String reason = "General Exception";
ModelAndView mav = new ModelAndView();
mav.addObject("reason", reason);
mav.setViewName("error.html");
return mav;
}
}
I've even created ExceptionResolver-classes like:
#Component
public class SessionCompanyNotRoleTableCompanyExceptionResolver implements HandlerExceptionResolver, Ordered {
private static final Logger log = LoggerFactory.getLogger(SessionCompanyNotRoleTableCompanyExceptionResolver.class);
private int order;
#Override
public ModelAndView resolveException(
HttpServletRequest request,
HttpServletResponse response,
Object handler,
Exception ex
) {
if (ex instanceof SessionCompanyNotRoleTableCompanyException) {
log.debug("SessionCompanyNotRoleTableCompanyException captured in SessionCompanyNotRoleTableCompanyExceptionResolver");
String reason = "Reason: SessionCompanyNotRoleTableCompanyException";
ModelAndView mav = new ModelAndView();
mav.addObject("reason", reason);
mav.setViewName("error.html");
return mav;
}
return null;
}
#Override
public int getOrder() {
return order;
}
public void setOrder(int order) {
this.order = order;
}
}
... and have them initialized in my web-config-class like:
#Bean
public SessionCompanyNotRoleTableCompanyExceptionResolver createSessionCompanyNotRoleTableCompanyExceptionResolver() {
SessionCompanyNotRoleTableCompanyExceptionResolver resolver = new SessionCompanyNotRoleTableCompanyExceptionResolver();
resolver.setOrder(1);
return resolver;
}
These work, i.e. exceptions are captured ONLY IF they are thrown from the Controllers. But NOT from my decide-method in the AccessDecisionManager.
What and how am I supposed to implement something that can catch these outside (before) the controller?
EDIT (adding the SessionCompanyNotRoleTableCompanyException to show you its definition):
public class SessionCompanyNotRoleTableCompanyException extends RuntimeException {
private static final long serialVersionUID = 1L;
public SessionCompanyNotRoleTableCompanyException(Long contextCompanyId, Long tableId) {
super("Context companyId: " + contextCompanyId + ", tableId: " + tableId);
}
}
I am trying to test my controller. Spring populates my Profile object but it is empty. I can set the email before the call bu it still is null. How to jag pass a Profile in a proper way?
private MockHttpServletRequest request;
private MockHttpServletResponse response;
#Autowired
private RequestMappingHandlerAdapter handlerAdapter;
#Autowired
private RequestMappingHandlerMapping handlerMapping;
#Before
public void setUp() throws Exception {
this.request = new MockHttpServletRequest();
request.setContentType("application/json");
this.response = new MockHttpServletResponse();
}
#Test
public void testPost() {
request.setMethod("POST");
request.setRequestURI("/user/"); // replace test with any value
final ModelAndView mav;
Object handler;
try {
Profile p = ProfileUtil.getProfile();
p.setEmail("test#mail.com");
request.setAttribute("profile", p);
System.out.println("before calling the email is " + p.getEmail());
handler = handlerMapping.getHandler(request).getHandler();
mav = handlerAdapter.handle(request, response, handler);
Assert.assertEquals(200, response.getStatus());
// Assert other conditions.
} catch (Exception e) {
}
}
This is the controller
#RequestMapping(value = "/", method = RequestMethod.POST)
public View postUser(ModelMap data, #Valid Profile profile, BindingResult bindingResult) {
System.out.println("The email is " + profile.getEmail());
}
Try using following signature for the controller function postUser.
public View postUser(ModelMap data, #ModelAttribute("profile") #Valid Profile profile, BindingResult bindingResult)
Hope this helps you. Cheers.