jQuery и загрузка файлов загрузки Spring-Boot «Требуемый номер части запроса» нет »

Question

У меня есть файл, который я пытаюсь загрузить в мой микросервис под весной. Я использую jQuery для отправки файла с помощью объекта JavaScript формы FormData. Spring-boot не вызывает мою конечную точку в моем контроллере из-за неспособности сопоставить файл FormData с файлом RequestParam.

JavaScript:

var name = "TEST"; 
var kml = '<kml><Document><Placemark id="' + name + '"><Point><coordinates>-69.83701518,47.817278750000014</coordinates></Point></Placemark></Document></kml>'; 
// upload the kml file to the server 
var data = new FormData(); 
data.append('file', kml); 
$.ajax({ 
    method: "POST", 
    url: "http://localhost:9096/upload/" + name, 
    data: data, 
    cache: false, 
    contentType: false, 
    processData: false, 
    success: function(data){ 
     console.log("success", name, data); 
    } 
}); 

Вот мой код контроллера:

@RestController 
public class MicroServiceController { 

    private Logger logger = LoggerFactory.getLogger(MicroServiceController.class); 

    @RequestMapping(value="/upload/{name}", method = { RequestMethod.POST }) 
    public ResponseEntity<?> uploadKML(@PathVariable String name, @RequestParam("file") MultipartFile file) throws IOException { 
     logger.debug("Upload: {}", name); 

     return new ResponseEntity<Boolean>(true, HttpStatus.OK); 
    } 
} 

Вот исключение:

2017-02-09 11:45:52.860 DEBUG 5521 --- [nio-9096-exec-1] o.s.b.f.s.DefaultListableBeanFactory  : Returning cached instance of singleton bean 'microServiceController' 
2017-02-09 11:45:52.888 DEBUG 5521 --- [nio-9096-exec-1] .w.s.m.m.a.ServletInvocableHandlerMethod : Failed to resolve argument 1 of type 'org.springframework.web.multipart.MultipartFile' 

org.springframework.web.multipart.support.MissingServletRequestPartException: Required request part 'file' is not present 
    at org.springframework.web.method.annotation.RequestParamMethodArgumentResolver.handleMissingValue(RequestParamMethodArgumentResolver.java:193) ~[spring-web-4.3.6.RELEASE.jar!/:4.3.6.RELEASE] 
    at org.springframework.web.method.annotation.AbstractNamedValueMethodArgumentResolver.resolveArgument(AbstractNamedValueMethodArgumentResolver.java:109) ~[spring-web-4.3.6.RELEASE.jar!/:4.3.6.RELEASE] 
    at org.springframework.web.method.support.HandlerMethodArgumentResolverComposite.resolveArgument(HandlerMethodArgumentResolverComposite.java:121) ~[spring-web-4.3.6.RELEASE.jar!/:4.3.6.RELEASE] 
    at org.springframework.web.method.support.InvocableHandlerMethod.getMethodArgumentValues(InvocableHandlerMethod.java:158) [spring-web-4.3.6.RELEASE.jar!/:4.3.6.RELEASE] 
    at org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:128) [spring-web-4.3.6.RELEASE.jar!/:4.3.6.RELEASE] 
    at org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:116) [spring-webmvc-4.3.6.RELEASE.jar!/:4.3.6.RELEASE] 
    at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandlerMethod(RequestMappingHandlerAdapter.java:827) [spring-webmvc-4.3.6.RELEASE.jar!/:4.3.6.RELEASE] 
    at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:738) [spring-webmvc-4.3.6.RELEASE.jar!/:4.3.6.RELEASE] 
    at org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:85) [spring-webmvc-4.3.6.RELEASE.jar!/:4.3.6.RELEASE] 
    at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:963) [spring-webmvc-4.3.6.RELEASE.jar!/:4.3.6.RELEASE] 
    at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:897) [spring-webmvc-4.3.6.RELEASE.jar!/:4.3.6.RELEASE] 
    at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:970) [spring-webmvc-4.3.6.RELEASE.jar!/:4.3.6.RELEASE] 
    at org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:872) [spring-webmvc-4.3.6.RELEASE.jar!/:4.3.6.RELEASE] 
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:648) [tomcat-embed-core-8.5.11.jar!/:8.5.11] 
    at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:846) [spring-webmvc-4.3.6.RELEASE.jar!/:4.3.6.RELEASE] 
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:729) [tomcat-embed-core-8.5.11.jar!/:8.5.11] 
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:230) [tomcat-embed-core-8.5.11.jar!/:8.5.11] 
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:165) [tomcat-embed-core-8.5.11.jar!/:8.5.11] 
    at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52) [tomcat-embed-websocket-8.5.11.jar!/:8.5.11] 
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:192) [tomcat-embed-core-8.5.11.jar!/:8.5.11] 
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:165) [tomcat-embed-core-8.5.11.jar!/:8.5.11] 
    at org.springframework.web.filter.RequestContextFilter.doFilterInternal(RequestContextFilter.java:99) [spring-web-4.3.6.RELEASE.jar!/:4.3.6.RELEASE] 
    at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) [spring-web-4.3.6.RELEASE.jar!/:4.3.6.RELEASE] 
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:192) [tomcat-embed-core-8.5.11.jar!/:8.5.11] 
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:165) [tomcat-embed-core-8.5.11.jar!/:8.5.11] 
    at org.springframework.web.filter.HttpPutFormContentFilter.doFilterInternal(HttpPutFormContentFilter.java:105) [spring-web-4.3.6.RELEASE.jar!/:4.3.6.RELEASE] 
    at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) [spring-web-4.3.6.RELEASE.jar!/:4.3.6.RELEASE] 
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:192) [tomcat-embed-core-8.5.11.jar!/:8.5.11] 
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:165) [tomcat-embed-core-8.5.11.jar!/:8.5.11] 
    at org.springframework.web.filter.HiddenHttpMethodFilter.doFilterInternal(HiddenHttpMethodFilter.java:81) [spring-web-4.3.6.RELEASE.jar!/:4.3.6.RELEASE] 
    at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) [spring-web-4.3.6.RELEASE.jar!/:4.3.6.RELEASE] 
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:192) [tomcat-embed-core-8.5.11.jar!/:8.5.11] 
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:165) [tomcat-embed-core-8.5.11.jar!/:8.5.11] 
    at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:197) [spring-web-4.3.6.RELEASE.jar!/:4.3.6.RELEASE] 
    at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) [spring-web-4.3.6.RELEASE.jar!/:4.3.6.RELEASE] 
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:192) [tomcat-embed-core-8.5.11.jar!/:8.5.11] 
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:165) [tomcat-embed-core-8.5.11.jar!/:8.5.11] 
    at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:198) [tomcat-embed-core-8.5.11.jar!/:8.5.11] 
    at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:96) [tomcat-embed-core-8.5.11.jar!/:8.5.11] 
    at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:474) [tomcat-embed-core-8.5.11.jar!/:8.5.11] 
    at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:140) [tomcat-embed-core-8.5.11.jar!/:8.5.11] 
    at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:79) [tomcat-embed-core-8.5.11.jar!/:8.5.11] 
    at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:87) [tomcat-embed-core-8.5.11.jar!/:8.5.11] 
    at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:349) [tomcat-embed-core-8.5.11.jar!/:8.5.11] 
    at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:783) [tomcat-embed-core-8.5.11.jar!/:8.5.11] 
    at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:66) [tomcat-embed-core-8.5.11.jar!/:8.5.11] 
    at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:798) [tomcat-embed-core-8.5.11.jar!/:8.5.11] 
    at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1434) [tomcat-embed-core-8.5.11.jar!/:8.5.11] 
    at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49) [tomcat-embed-core-8.5.11.jar!/:8.5.11] 
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) [na:1.8.0_121] 
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) [na:1.8.0_121] 
    at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) [tomcat-embed-core-8.5.11.jar!/:8.5.11] 
    at java.lang.Thread.run(Thread.java:745) [na:1.8.0_121] 

2017-02-09 11:45:52.889 DEBUG 5521 --- [nio-9096-exec-1] .m.m.a.ExceptionHandlerExceptionResolver : Resolving exception from handler [public org.springframework.http.ResponseEntity<?> com.jasco.microservice.MicroServiceController.uploadKML(java.lang.String,org.springframework.web.multipart.MultipartFile) throws java.io.IOException]: org.springframework.web.multipart.support.MissingServletRequestPartException: Required request part 'file' is not present 
2017-02-09 11:45:52.891 DEBUG 5521 --- [nio-9096-exec-1] .w.s.m.a.ResponseStatusExceptionResolver : Resolving exception from handler [public org.springframework.http.ResponseEntity<?> com.jasco.microservice.MicroServiceController.uploadKML(java.lang.String,org.springframework.web.multipart.MultipartFile) throws java.io.IOException]: org.springframework.web.multipart.support.MissingServletRequestPartException: Required request part 'file' is not present 
2017-02-09 11:45:52.891 DEBUG 5521 --- [nio-9096-exec-1] .w.s.m.s.DefaultHandlerExceptionResolver : Resolving exception from handler [public org.springframework.http.ResponseEntity<?> com.jasco.microservice.MicroServiceController.uploadKML(java.lang.String,org.springframework.web.multipart.MultipartFile) throws java.io.IOException]: org.springframework.web.multipart.support.MissingServletRequestPartException: Required request part 'file' is not present 
2017-02-09 11:45:52.891 DEBUG 5521 --- [nio-9096-exec-1] o.s.web.servlet.DispatcherServlet  : Null ModelAndView returned to DispatcherServlet with name 'dispatcherServlet': assuming HandlerAdapter completed request handling 
2017-02-09 11:45:52.892 DEBUG 5521 --- [nio-9096-exec-1] o.s.web.servlet.DispatcherServlet  : Successfully completed request 

А вот запроса и заголовки:

Request URL:http://localhost:9096/upload/TEST 
Request Method:POST 
Status Code:400 
Remote Address:127.0.0.1:9096 

Request Headers: 
    Accept:*/* 
    Accept-Encoding:gzip, deflate, br 
    Accept-Language:en-GB,en-US;q=0.8,en;q=0.6 
    Cache-Control:no-cache 
    Connection:keep-alive 
    Content-Length:273 
    Content-Type:multipart/form-data; boundary=----WebKitFormBoundaryM401einBJzuTMVSj 
    Host:localhost:9096 
    Origin:http://localhost:8090 
    Pragma:no-cache 
    Referer:http://localhost:8090/ 
    User-Agent:Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/56.0.2924.76 Safari/537.36 

Request Payload 
------WebKitFormBoundaryM401einBJzuTMVSj 
Content-Disposition: form-data; name="file" 

<kml><Document><Placemark id="TEST"><Point><coordinates>-69.83701518,47.817278750000014</coordinates></Point></Placemark></Document></kml> 
------WebKitFormBoundaryM401einBJzuTMVSj-- 

И JSON ответ:

{"timestamp":1486655346223,"status":400,"error":"Bad Request","exception":"org.springframework.web.multipart.support.MissingServletRequestPartException","message":"Required request part 'file' is not present","path":"/upload/TEST"} 

Для меня это выглядит как у меня есть имя файла, установленного на «файл», и я также ищу «файл» в Microservice ... но он, похоже, не делает соединение на стороне пружинной загрузки. Я смущен, поскольку все это похоже на примеры и проблемы, которые я нахожу в Интернете, но я все еще получаю исключение.

Любые предложения о том, что делать дальше, или где я напортачил, полезно!

Answer 1

Вы используете @RequestParam("file") в методе контроллера, так что контроллер ожидает, что ваше значение file содержится в запросе, как:

http://localhost:9096/upload/TEST?file=TEST 

Если вы не хотите, чтобы отправить параметр файла как часть URL, вы должны попробовать с другой аннотацией Spring, например @ModelAttribute.

Надеется, что это помогает,