I have a controller where I have controller level mapping as "/subjects/{subjectId}/lessons" which is required due to some reason
#RestController
#RequestMapping( value = "/subjects/{subjectId}/lessons",produces = { MediaType.APPLICATION_JSON_VALUE } )
public class LessonController {
.......
#RequestMapping( method = RequestMethod.GET )
public ResponseEntity<Resources<Resource<Lesson>>> getAllSjubject(#PathVariable(value = "subjectId") int subjectId){
List<Lesson> lessonList = lessonService.getAllLessons(subjectId);
Resources<Resource<Lesson>> resource = this.lessonResourceAssembler.toLessonResourceList(lessonList);
return new ResponseEntity<Resources<Resource<Lesson>>>(resource, HttpStatus.OK);
}
}
When made request it throws the exception
java.lang.IllegalArgumentException: Not enough variable values available to expand 'subjectId'
at org.springframework.web.util.UriComponents$VarArgsTemplateVariables.getValue(UriComponents.java:327)
at org.springframework.web.util.UriComponents.expandUriComponent(UriComponents.java:230)
at org.springframework.web.util.HierarchicalUriComponents$FullPathComponent.expand(HierarchicalUriComponents.java:685)
at org.springframework.web.util.HierarchicalUriComponents.expandInternal(HierarchicalUriComponents.java:328)
at org.springframework.web.util.HierarchicalUriComponents.expandInternal(HierarchicalUriComponents.java:47)
at org.springframework.web.util.UriComponents.expand(UriComponents.java:163)
at org.springframework.hateoas.mvc.ControllerLinkBuilder.linkTo(ControllerLinkBuilder.java:89)
at org.springframework.hateoas.mvc.ControllerLinkBuilder.linkTo(ControllerLinkBuilder.java:69)
at com.khaino.springrest.assembler.LessonResourceAssembler.toLessonResource(LessonResourceAssembler.java:31)
at com.khaino.springrest.assembler.LessonResourceAssembler.toLessonResourceList(LessonResourceAssembler.java:44)
at com.khaino.springrest.controller.LessonController.getAllSjubject(LessonController.java:43)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at org.springframework.web.method.support.InvocableHandlerMethod.doInvoke(InvocableHandlerMethod.java:221)
at org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:137)
at org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:111)
at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandlerMethod(RequestMappingHandlerAdapter.java:806)
at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:729)
at org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:85)
at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:959)
at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:893)
at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:970)
at org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:861)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:622)
at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:846)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:729)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:291)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:239)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:219)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:106)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:502)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:142)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:79)
at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:616)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:88)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:518)
at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1091)
at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:673)
at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1526)
at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.run(NioEndpoint.java:1482)
at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
at java.lang.Thread.run(Unknown Source)
But when I move the pathvariable to method level as below it is working correctly.
#RequestMapping( value = "/subjects",produces = { MediaType.APPLICATION_JSON_VALUE } )
public class LessonController {
......
#RequestMapping( value = "/{subjectId}/lessons", method = RequestMethod.GET )
public ResponseEntity<Resources<Resource<Lesson>>> getAllSjubject(#PathVariable("subjectId") int subjectId){
List<Lesson> lessonList = lessonService.getAllLessons(subjectId);
Resources<Resource<Lesson>> resource = this.lessonResourceAssembler.toLessonResourceList(lessonList);
return new ResponseEntity<Resources<Resource<Lesson>>>(resource, HttpStatus.OK);
}
....
}
Something wrong with my code? What could be the reason and solution?
Your mappings works in both scenarios but based on your stack trace, the following part is the source of problem:
this.lessonResourceAssembler.toLessonResourceList(lessonList)
You're creating some Hypermedia Links that contains some Template Variables which are NOT expanded.
Updated: Use this approach to create link:
linkTo(methodOn(LessonController.class).getAllSjubject(42))
.withRel(REL_SELF)
mehtodOn is in org.springframework.hateoas.mvc.ControllerLinkBuilder package, make sure you have correct static imports.
http://localhost:8080/springexample/subjects/3/lessons worked for me with code:
import org.springframework.http.HttpStatus;
import org.springframework.http.MediaType;
import org.springframework.http.ResponseEntity;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.RestController;
#RestController
#RequestMapping(value = "/subjects/{subjectId}/lessons", produces = { MediaType.APPLICATION_JSON_VALUE })
public class LessonController {
#RequestMapping(method = RequestMethod.GET)
public ResponseEntity getAllSjubject(
#PathVariable(value = "subjectId") int subjectId) {
System.out.println(subjectId);
return new ResponseEntity(HttpStatus.OK);
}
}
Having, Spring Dependency defined in pom.xml as: <spring.version>4.1.4.RELEASE</spring.version>
Related
I am trying to call a rest controller using get call which reads files from file system and return InputStream of that file.
client side code:
website = new URL(configurationFileUrl + "/stream/" + key.getReportRawDataId());
URLConnection connection = website.openConnection();
connection.setConnectTimeout(60 * 1000);
connection.setReadTimeout(60 * 1000);
stream = connection.getInputStream();
The controller code:
#RestController
#RequestMapping(value = "/blueprintConfig", produces = {"application/octet-stream", "application/json"}, headers = "Accept=*/*")
public class ReportConfigurationController {
#ResponseBody
#RequestMapping(value = "/stream/{id:.+}", method = RequestMethod.GET)
public ResponseEntity<?> getFilesAsStream(#PathVariable("id") String id) throws Exception {
return configurationService.getFilesAsStream(id);
}
}
service:
#Override
public ResponseEntity<?> getFilesAsStream(String id) throws Exception {
String filePath = resourcePath + id;
InputStream is = null;
try {
is = new FileInputStream(filePath);
} catch (FileNotFoundException e) {
LOGGER.error("can not read file: {}", e);
}
return new ResponseEntity<InputStream>(is, HttpStatus.OK);
}
while debugging I see the service is returning inputstream without any exception, but client side is throwing below IO exception:
java.io.IOException: Server returned HTTP response code: 406 for URL: http://localhost:8091/blueprintConfig/stream/1_check.png
at sun.net.www.protocol.http.HttpURLConnection.getInputStream0(HttpURLConnection.java:1839)
at sun.net.www.protocol.http.HttpURLConnection.getInputStream(HttpURLConnection.java:1440)
at com.jasper.wrapper.service.ReportServiceImpl.putInCache(ReportServiceImpl.java:128)
at com.jasper.wrapper.service.ReportServiceImpl.populateCache(ReportServiceImpl.java:110)
at com.jasper.wrapper.service.ReportServiceImpl.lambda$generateReport$0(ReportServiceImpl.java:64)
at com.jasper.wrapper.service.ReportServiceImpl$$Lambda$8/819977316.accept(Unknown Source)
at java.util.LinkedHashMap.forEach(LinkedHashMap.java:676)
at com.jasper.wrapper.service.ReportServiceImpl.generateReport(ReportServiceImpl.java:64)
at com.jasper.wrapper.controller.JasperReportController.generateReport(JasperReportController.java:27)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:497)
at org.springframework.web.method.support.InvocableHandlerMethod.doInvoke(InvocableHandlerMethod.java:221)
at org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:137)
at org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:110)
at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandlerMethod(RequestMappingHandlerAdapter.java:775)
at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:705)
at org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:85)
at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:959)
at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:893)
at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:967)
at org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:869)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:648)
at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:843)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:729)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:291)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:239)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.springframework.web.filter.HiddenHttpMethodFilter.doFilterInternal(HiddenHttpMethodFilter.java:77)
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:239)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:85)
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:239)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:217)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:106)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:502)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:142)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:79)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:88)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:518)
at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1091)
at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:673)
at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1500)
at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.run(NioEndpoint.java:1456)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
at java.lang.Thread.run(Thread.java:745)
what is wrong I am doing here I tried setting
connection.setRequestProperty("accept", "application/octet-stream");
but no luck, could you please help
406 means your client isn't accepting the response it got from the server, so the server is unaware (ergo no error on the server).
It really depends on what the server is saying the data is.
Just telnet into your server:
telnet localhost:8091
and emit a:
GET /blueprintConfig/stream/1_check.png HTTP/1.1
(press return key twice)
Then look at the response headers to find out what your server is sending back to the client.
Alternatively, if you have curl installed, just do:
curl -I http://localhost:8091/blueprintConfig/stream/1_check.png
And look at the headers.
I have set the interceptor for the Rest Template code as below:
ClientHttpRequestInterceptor acceptHeaderPdf = getClientHttpRequestInterceptor(APPLICATION_STREAM);
<-- here APPLICTION_STREAM is my header externalized variable you can use your headers like application/pdf ... -->
restTemplate.setInterceptors(singletonList(acceptHeaderPdf));
private ClientHttpRequestInterceptor getClientHttpRequestInterceptor(String applicationJson) {
return new AcceptHeaderHttpRequestInterceptor(
applicationJson);
}
class AcceptHeaderHttpRequestInterceptor implements ClientHttpRequestInterceptor {
private final String headerValue;
public AcceptHeaderHttpRequestInterceptor(String headerValue) {
this.headerValue = headerValue;
}
#Override
public ClientHttpResponse intercept(HttpRequest request, byte[] body,
ClientHttpRequestExecution execution) throws IOException {
HttpRequestWrapper requestWrapper = new HttpRequestWrapper(request);
requestWrapper.getHeaders().setAccept(singletonList(MediaType.valueOf(headerValue)));
return execution.execute(requestWrapper, body);
}
}
I have a method to download a zip file and at the moment I use FileSystemResource to do it. The problem is with a extension controller, I ccheck if a file is really zip file and I throw an exception if isn't so.
This exception create a Json object with error details and return it.
The problem is the type of Rest api because now I have :
#RequestMapping(value = "/zipDownload", produces="application/zip", method = RequestMethod.GET)
public FileSystemResource getZip(#RequestParam(value="filePath", required=true) String filePath ) throws FileExtensionException{
return file.getZipFile(filePath);
}
and services:
public FileSystemResource getZipFile(String fileName) throws FileExtensionException {
String ext=FilenameUtils.getExtension(fileName);
if (!ext.equals("zip"))
throw new FileExtensionException(ext + " and not zip");
return new FileSystemResource(new File(fileName));
}
the exception
public class FileExtensionException extends Exception {
private static final long serialVersionUID = 1L;
public FileExtensionException(String message){
super("The selected file has a different extension:" + message);
}
}
and exception controller
#ControllerAdvice
public class ErrorController {
/**
*
* #param e: exception thrown
* #return ErroreResponse
*/
#ExceptionHandler(value = Exception.class)
public #ResponseBody ErrorResponse errorHandler(Exception e){
//Make the exception by buildErrorResponse
return ErrorResponseBuilder.buildErrorResponse(e);
}
}
The problem another exception launched by Spring that override mine:
2015-09-21 09:09:05.197 ERROR 7500 --- [nio-8080-exec-2] .m.m.a.ExceptionHandlerExceptionResolver : Failed to invoke
#ExceptionHandler method: public matlab.ErrorResponse
matlab.ErrorController.errorHandler(java.lang.Exception)
org.springframework.web.HttpMediaTypeNotAcceptableException: Could not
find acceptable representation at
org.springframework.web.servlet.mvc.method.annotation.AbstractMessageConverterMethodProcessor.writeWithMessageConverters(AbstractMessageConverterMethodProcessor.java:173)
at
org.springframework.web.servlet.mvc.method.annotation.AbstractMessageConverterMethodProcessor.writeWithMessageConverters(AbstractMessageConverterMethodProcessor.java:101)
at
org.springframework.web.servlet.mvc.method.annotation.RequestResponseBodyMethodProcessor.handleReturnValue(RequestResponseBodyMethodProcessor.java:185)
at
org.springframework.web.method.support.HandlerMethodReturnValueHandlerComposite.handleReturnValue(HandlerMethodReturnValueHandlerComposite.java:71)
at
org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:126)
at
org.springframework.web.servlet.mvc.method.annotation.ExceptionHandlerExceptionResolver.doResolveHandlerMethodException(ExceptionHandlerExceptionResolver.java:362)
at
org.springframework.web.servlet.handler.AbstractHandlerMethodExceptionResolver.doResolveException(AbstractHandlerMethodExceptionResolver.java:60)
at
org.springframework.web.servlet.handler.AbstractHandlerExceptionResolver.resolveException(AbstractHandlerExceptionResolver.java:138)
at
org.springframework.web.servlet.handler.HandlerExceptionResolverComposite.resolveException(HandlerExceptionResolverComposite.java:74)
at
org.springframework.web.servlet.DispatcherServlet.processHandlerException(DispatcherServlet.java:1183)
at
org.springframework.web.servlet.DispatcherServlet.processDispatchResult(DispatcherServlet.java:1020)
at
org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:971)
at
org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:893)
at
org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:967)
at
org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:858)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:622) at
org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:843)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:729) at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:291)
at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at
org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:239)
at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at
org.springframework.web.filter.HiddenHttpMethodFilter.doFilterInternal(HiddenHttpMethodFilter.java:77)
at
org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:239)
at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at
org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:85)
at
org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:239)
at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at
org.springframework.boot.context.web.ErrorPageFilter.doFilter(ErrorPageFilter.java:116)
at
org.springframework.boot.context.web.ErrorPageFilter.access$000(ErrorPageFilter.java:60)
at
org.springframework.boot.context.web.ErrorPageFilter$1.doFilterInternal(ErrorPageFilter.java:91)
at
org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
at
org.springframework.boot.context.web.ErrorPageFilter.doFilter(ErrorPageFilter.java:109)
at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:239)
at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at
org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:219)
at
org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:106)
at
org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:502)
at
org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:142)
at
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:79)
at
org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:616)
at
org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:88)
at
org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:518)
at
org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1091)
at
org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:673)
at
org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1526)
at
org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.run(NioEndpoint.java:1482)
at
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at
org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
at java.lang.Thread.run(Thread.java:745)
2015-09-21 09:09:05.201 ERROR 7500 --- [nio-8080-exec-2]
o.s.boot.context.web.ErrorPageFilter : Forwarding to error page from
request [/ManagmentFile/zipDownload] due to exception [The selected
file has a different extension:xlsx and not zip]
matlab.FileExtensionException: The selected file has a different
extension:xlsx and not zip at
matlab.FileServices.getZipFile(FileServices.java:46) at
matlab.ws.FileManagerImpl.getZip(FileManagerImpl.java:38) at
sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:497) at
org.springframework.web.method.support.InvocableHandlerMethod.doInvoke(InvocableHandlerMethod.java:221)
at
org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:137)
at
org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:110)
at
org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandleMethod(RequestMappingHandlerAdapter.java:776)
at
org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:705)
at
org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:85)
at
org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:959)
at
org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:893)
at
org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:967)
at
org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:858)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:622) at
org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:843)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:729) at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:291)
at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at
org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:239)
at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at
org.springframework.web.filter.HiddenHttpMethodFilter.doFilterInternal(HiddenHttpMethodFilter.java:77)
at
org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:239)
at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at
org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:85)
at
org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:239)
at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at
org.springframework.boot.context.web.ErrorPageFilter.doFilter(ErrorPageFilter.java:116)
at
org.springframework.boot.context.web.ErrorPageFilter.access$000(ErrorPageFilter.java:60)
at
org.springframework.boot.context.web.ErrorPageFilter$1.doFilterInternal(ErrorPageFilter.java:91)
at
org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
at
org.springframework.boot.context.web.ErrorPageFilter.doFilter(ErrorPageFilter.java:109)
at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:239)
at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at
org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:219)
at
org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:106)
at
org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:502)
at
org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:142)
at
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:79)
at
org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:616)
at
org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:88)
at
org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:518)
at
org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1091)
at
org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:673)
at
org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1526)
at
org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.run(NioEndpoint.java:1482)
at
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at
org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
at java.lang.Thread.run(Thread.java:745)
How can I return Zip file or json message in the same method? the problem is , produces="application/zip", without this recieve the correct error json but it doesn't download the file, otherwise vice versa
Thanks
EDIT
You can keep your getZip from your controller as is and just change your #ExceptionHandler this way :
#ExceptionHandler(Exception.class)
#ResponseStatus(HttpStatus.BAD_REQUEST)
public #ResponseBody ErrorResponse errorHandler(Exception e, HttpServletRequest request) {
request.setAttribute(HandlerMapping.PRODUCIBLE_MEDIA_TYPES_ATTRIBUTE, Collections.singleton(MediaType.APPLICATION_JSON));
return ErrorResponseBuilder.buildErrorResponse(e);
}
Here I just modify the request and reset the PRODUCIBLE_MEDIA_TYPES_ATTRIBUTE parameter to tell explicitly to Spring what representation I want to use.
I'm using #ExceptionHandler to manage all my exception and to return a JSON response for any REST API that throws exception.
At the moment I manage two exception, the first is ResourceNotFoundException and it works but the second, FileExtensionException, it doesn't work.
It throws this exception in eclipse console and nothing into rest response.
2015-09-21 09:09:05.197 ERROR 7500 --- [nio-8080-exec-2]
.m.m.a.ExceptionHandlerExceptionResolver : Failed to invoke
#ExceptionHandler method: public matlab.ErrorResponse
matlab.ErrorController.errorHandler(java.lang.Exception)
org.springframework.web.HttpMediaTypeNotAcceptableException: Could not
find acceptable representation at
org.springframework.web.servlet.mvc.method.annotation.AbstractMessageConverterMethodProcessor.writeWithMessageConverters(AbstractMessageConverterMethodProcessor.java:173)
at
org.springframework.web.servlet.mvc.method.annotation.AbstractMessageConverterMethodProcessor.writeWithMessageConverters(AbstractMessageConverterMethodProcessor.java:101)
at
org.springframework.web.servlet.mvc.method.annotation.RequestResponseBodyMethodProcessor.handleReturnValue(RequestResponseBodyMethodProcessor.java:185)
at
org.springframework.web.method.support.HandlerMethodReturnValueHandlerComposite.handleReturnValue(HandlerMethodReturnValueHandlerComposite.java:71)
at
org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:126)
at
org.springframework.web.servlet.mvc.method.annotation.ExceptionHandlerExceptionResolver.doResolveHandlerMethodException(ExceptionHandlerExceptionResolver.java:362)
at
org.springframework.web.servlet.handler.AbstractHandlerMethodExceptionResolver.doResolveException(AbstractHandlerMethodExceptionResolver.java:60)
at
org.springframework.web.servlet.handler.AbstractHandlerExceptionResolver.resolveException(AbstractHandlerExceptionResolver.java:138)
at
org.springframework.web.servlet.handler.HandlerExceptionResolverComposite.resolveException(HandlerExceptionResolverComposite.java:74)
at
org.springframework.web.servlet.DispatcherServlet.processHandlerException(DispatcherServlet.java:1183)
at
org.springframework.web.servlet.DispatcherServlet.processDispatchResult(DispatcherServlet.java:1020)
at
org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:971)
at
org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:893)
at
org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:967)
at
org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:858)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:622) at
org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:843)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:729) at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:291)
at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at
org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:239)
at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at
org.springframework.web.filter.HiddenHttpMethodFilter.doFilterInternal(HiddenHttpMethodFilter.java:77)
at
org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:239)
at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at
org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:85)
at
org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:239)
at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at
org.springframework.boot.context.web.ErrorPageFilter.doFilter(ErrorPageFilter.java:116)
at
org.springframework.boot.context.web.ErrorPageFilter.access$000(ErrorPageFilter.java:60)
at
org.springframework.boot.context.web.ErrorPageFilter$1.doFilterInternal(ErrorPageFilter.java:91)
at
org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
at
org.springframework.boot.context.web.ErrorPageFilter.doFilter(ErrorPageFilter.java:109)
at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:239)
at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at
org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:219)
at
org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:106)
at
org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:502)
at
org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:142)
at
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:79)
at
org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:616)
at
org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:88)
at
org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:518)
at
org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1091)
at
org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:673)
at
org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1526)
at
org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.run(NioEndpoint.java:1482)
at
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at
org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
at java.lang.Thread.run(Thread.java:745)
2015-09-21 09:09:05.201 ERROR 7500 --- [nio-8080-exec-2]
o.s.boot.context.web.ErrorPageFilter : Forwarding to error page
from request [/ManagmentFile/zipDownload] due to exception [The
selected file has a different extension:xlsx and not zip]
matlab.FileExtensionException: The selected file has a different
extension:xlsx and not zip at
matlab.FileServices.getZipFile(FileServices.java:46) at
matlab.ws.FileManagerImpl.getZip(FileManagerImpl.java:38) at
sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:497) at
org.springframework.web.method.support.InvocableHandlerMethod.doInvoke(InvocableHandlerMethod.java:221)
at
org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:137)
at
org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:110)
at
org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandleMethod(RequestMappingHandlerAdapter.java:776)
at
org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:705)
at
org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:85)
at
org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:959)
at
org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:893)
at
org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:967)
at
org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:858)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:622) at
org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:843)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:729) at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:291)
at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at
org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:239)
at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at
org.springframework.web.filter.HiddenHttpMethodFilter.doFilterInternal(HiddenHttpMethodFilter.java:77)
at
org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:239)
at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at
org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:85)
at
org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:239)
at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at
org.springframework.boot.context.web.ErrorPageFilter.doFilter(ErrorPageFilter.java:116)
at
org.springframework.boot.context.web.ErrorPageFilter.access$000(ErrorPageFilter.java:60)
at
org.springframework.boot.context.web.ErrorPageFilter$1.doFilterInternal(ErrorPageFilter.java:91)
at
org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
at
org.springframework.boot.context.web.ErrorPageFilter.doFilter(ErrorPageFilter.java:109)
at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:239)
at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at
org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:219)
at
org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:106)
at
org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:502)
at
org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:142)
at
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:79)
at
org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:616)
at
org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:88)
at
org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:518)
at
org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1091)
at
org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:673)
at
org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1526)
at
org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.run(NioEndpoint.java:1482)
at
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at
org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
at java.lang.Thread.run(Thread.java:745)
These are the codes called by webservices:
public FileSystemResource getZipFile(String fileName) throws FileExtensionException {
String ext=FilenameUtils.getExtension(fileName);
if (ext!= "zip")
throw new FileExtensionException(ext + " and not zip");
return new FileSystemResource(new File(fileName));
}
the exception:
package matlab;
public class FileExtensionException extends RuntimeException {
private static final long serialVersionUID = 1L;
public FileExtensionException(String message){
super("The selected file has a different extension:" + message);
}
}
RestController:
#RequestMapping(value = "/files", method = RequestMethod.GET)
public Response<Collection<FileModel>> getAllFiles(#RequestParam(value="path", defaultValue="/home") String path) throws ResourceNotFoundException {
Collection<FileModel> result;
result = file.getAllFiles(path);
return new Response<Collection<FileModel>>(HttpStatus.OK.value(),result);
}
#RequestMapping(value = "/zipDownload", produces="application/zip", method = RequestMethod.GET)
#ResponseBody
public FileSystemResource getZip(#RequestParam(value="filePath", required=true) String filePath ) throws FileExtensionException{
return file.getZipFile(filePath);
}
ResourceNotFoundException
public class ResourceNotFoundException extends Exception {
private static final long serialVersionUID = 1L;
public ResourceNotFoundException(String path){
super("The specified path: "+ path +" doesn't exist");
}
}
the ErrorControl
#ControllerAdvice
public class ErrorController {
/**
*
* #param e: exception thrown
* #return ErroreResponse
*/
#ExceptionHandler(Exception.class)
public #ResponseBody ErrorResponse errorHandler(Exception e){
//Make the exception by buildErrorResponse
return ErrorResponseBuilder.buildErrorResponse(e);
}
}
the error build:
public class ErrorResponseBuilder {
public ErrorResponseBuilder() {
}
/**
* Build exception response beginning from exception
* #param e exception thrown
* #return ErrorResponse: response of an exception
*/
public static ErrorResponse buildErrorResponse(Exception e){
StringWriter errors = new StringWriter();
e.printStackTrace(new PrintWriter(errors));
return new ErrorResponse(HttpStatusManager.getHttpCode(e),e.getClass().getName(),e.getMessage(),errors.toString());
}
}
Where is the problem?
Thanks
Try to update your spring configuration with:
<bean id="methodHandlerExceptionResolver" class="org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerExceptionResolver">
<property name="messageConverters">
<list>
<ref bean="stringHttpMessageConverter"/>
<ref bean="jsonHttpMessageConverter"/>
<ref bean="marshallingHttpMessageConverter"/>
</list>
</property>
</bean>
Please i am trying to pass this json to a controller in spring framework.
{
"date" : "2012-02-09",
"subject" : "Margin ",
"selections" : [
{"FGY" : ["Try", "Harder"]},{"LGY" : ["Harder", "Try"]}
]
}
The Selections Class is
import org.springframework.context.annotation.Bean;
import org.springframework.stereotype.Component;
import java.io.Serializable;
import java.util.List;
#Component
public class Selections implements Serializable {
//#Bean
public Selections(){
}
#JsonProperty("FGY")
private List<String> FGY;
#JsonProperty("LGY")
private List<String> LGY;
public List<String> getFGY() {
return FGY;
}
public void setFGY(List<String> FGY) {
this.FGY = FGY;
}
public String getLGY(){
return LGY;
}
public void setLGY(List<String> LGY) {
this.LGY = LGY;
}
}
The ReportRequest Class is :
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.Bean;
import org.springframework.stereotype.Component;
import java.io.Serializable;
import java.util.Date;
import java.util.List;
#Component
public class ReportRequest implements Serializable{
private String report;
private Date date;
private List<Selections> selections;
public ReportRequest(){
}
public String getReport() {
return report;
}
public void setReport(String report) {
this.report = report;
}
public Date getDate() {
return date;
}
public void setDate(Date date) {
this.date = date;
}
public List<Selections> getSelections() {
return selections;
}
public void setSelections(List<Selections> selections) {
this.selections = selections;
}
public ReportResponse processRequest() {
for(Selections selection : getSelections()){ // null error occurs on either FGY or LGY depending on which is the second in the json list
selection.getFGY().forEach(System.out::println);
selection.getLGY().forEach(System.out::println);
}
return null;
}
The controller
#RequestMapping(value = "/request_report" , method = RequestMethod.POST )
public #ResponseBody
ReportResponse receive(#RequestBody ReportRequest reportRequest) {
return reportRequest.processRequest();
}
This is the error : java.lang.NullPointerException: null
Doing a debug i was able to find out that the null error occurs in the ReportRequest processRequest method.
OLD ERROR(SOLVED): The other attributes of the reportRequest object were properly initialized from the json but the attribute "selections" failed to initialize the "FGY" object with the list of strings in the json
EDIT(NEW ERROR): The new error is, only the first object in the selections list in the json is passed into the selections list in spring class ReportRequest. The second object in the list is not passed. Thus the null error occurs on whichever is second in the json. eg LGY is second presently.
StackTrace :
`
java.lang.NullPointerException: null
at com.teamapt.alm.utils.ReportRequest.processRequest(ReportRequest.java:79)
at com.teamapt.alm.controller.AlmController.receive(AlmController.java:66)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:483)
at org.springframework.web.method.support.InvocableHandlerMethod.doInvoke(InvocableHandlerMethod.java:221)
at org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:137)
at org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:110)
at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandleMethod(RequestMappingHandlerAdapter.java:776)
at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:705)
at org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:85)
at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:959)
at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:893)
at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:966)
at org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:868)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:707)
at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:842)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:790)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:291)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:239)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.springframework.boot.actuate.autoconfigure.EndpointWebMvcAutoConfiguration$ApplicationContextHeaderFilter.doFilterInternal(EndpointWebMvcAutoConfiguration.java:291)
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:239)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.springframework.web.filter.HiddenHttpMethodFilter.doFilterInternal(HiddenHttpMethodFilter.java:77)
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:239)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at com.teamapt.alm.config.Config$1.doFilter(Config.java:36)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:239)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.springframework.boot.actuate.trace.WebRequestTraceFilter.doFilterInternal(WebRequestTraceFilter.java:102)
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:239)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:85)
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:239)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.springframework.boot.actuate.autoconfigure.MetricFilterAutoConfiguration$MetricsFilter.doFilterInternal(MetricFilterAutoConfiguration.java:90)
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:239)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:219)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:106)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:501)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:142)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:79)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:88)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:516)
at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1086)
at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:659)
at org.apache.coyote.http11.Http11NioProtocol$Http11ConnectionHandler.process(Http11NioProtocol.java:223)
at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1558)
at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.run(NioEndpoint.java:1515)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
at java.lang.Thread.run(Thread.java:745)
Give the getter/setter combo
public List<String> getFGY() {
return FGY;
}
public void setFGY(List<String> FGY) {
this.FGY = FGY;
}
Jackson (which I assume is what you are using for your JSON serialization/deserialization) will determine the property's name to be fgy, not FGY. Deserialization will therefore not find your property.
You can annotate either one with
#JsonProperty("FGY")
to explicitly set the property name you expect.
Try using #JsonIgnore in the child class on parents collection. It is trying to serialize recursively.
Follow this link for other ways to handle this.
I have some code for download file from web server.
Everything works alright, but in console I have this exception:
июн 26, 2015 2:08:42 AM org.apache.catalina.core.StandardWrapperValve invoke
SEVERE: Servlet.service() for servlet [default] in context with path [/TestTask] threw exception
java.lang.IllegalStateException: Cannot call sendError() after the response has been committed
at org.apache.catalina.connector.ResponseFacade.sendError(ResponseFacade.java:462)
at org.apache.struts2.dispatcher.DefaultDispatcherErrorHandler.handleErrorInDevMode(DefaultDispatcherErrorHandler.java:109)
at org.apache.struts2.dispatcher.DefaultDispatcherErrorHandler.handleError(DefaultDispatcherErrorHandler.java:57)
at org.apache.struts2.dispatcher.Dispatcher.sendError(Dispatcher.java:909)
at org.apache.struts2.dispatcher.Dispatcher.serviceAction(Dispatcher.java:576)
at org.apache.struts2.dispatcher.ng.ExecuteOperations.executeAction(ExecuteOperations.java:81)
at org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter.doFilter(StrutsPrepareAndExecuteFilter.java:99)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:239)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:219)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:106)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:503)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:136)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:79)
at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:610)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:88)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:526)
at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1078)
at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:655)
at org.apache.coyote.http11.Http11NioProtocol$Http11ConnectionHandler.process(Http11NioProtocol.java:222)
at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1566)
at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.run(NioEndpoint.java:1523)
at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
at java.lang.Thread.run(Unknown Source)
Why and what it can be? And how i can fix this problem? I try find answer in the google, but I failed.
The code:
package actions;
import java.io.IOException;
import javax.servlet.ServletOutputStream;
import javax.servlet.http.HttpServletResponse;
import javax.xml.ws.Action;
import org.apache.log4j.Logger;
import org.apache.struts.chain.contexts.ServletActionContext;
import service.CsvCreator;
import com.opensymphony.xwork2.ActionSupport;
public class DownloadCsvAction extends ActionSupport {
private static final long serialVersionUID = -4714537109287679996L;
private CsvCreator CSVcreator;
private static final Logger logger = Logger.getLogger(DownloadCsvAction.class);
public CsvCreator getCSVcreator() {
return CSVcreator;
}
public void setCSVcreator(CsvCreator cSVcreator) {
CSVcreator = cSVcreator;
}
#Override
public String execute() {
HttpServletResponse response = org.apache.struts2.ServletActionContext.getResponse();
response.setHeader("Content-Disposition", "attachment; filename=\"phone_records.csv\"");
response.setContentType("text/csv");
ServletOutputStream out;
try {
out = response.getOutputStream();
String tableHeader = "Caller, Event, Reciever, Timestamp\n";
out.write(tableHeader.getBytes("UTF-8"));
out.write(CSVcreator.getAllRecordsInString().getBytes("UTF-8"));
out.flush();
out.close();
} catch (IOException e) {
logger.error(e.getMessage());
}
return SUCCESS;
}
}
And my struts.xml:
<action name="DownloadCsvAction" class="DownloadCsvAction">
<result name="success" type="dispatcher"/>
</action>
Why and what it can be?
Because response is already committed. You have closed response before it's used by the Struts2.
And how I can fix this problem?
When your action execution ends, return Action.NONE result code. This code tells the invoker to not execute any result because response might be already committed.
You can also rewrite the action implementation to use stream result type. In this way you have not to do with the response and let Struts2 do the rest. Example of using stream result is here.