改造-春季图片上传

Question

I have a problem in uploading file to server(Spring Boot) from Android-retrofit.

this is my code in Spring Boot.

@RestController
@RequestMapping("beongae/api/{version}/profile")
public class ProfileController {
    @RequestMapping(value = "/upload/{name}", method = RequestMethod.POST)
    public ApiMessasge uploadBasic(@PathVariable("name") String name,
                                   @RequestPart("file") MultipartFile data) throws IOException {
        ApiMessasge apiMessasge = new ApiMessasge();
        System.out.println("start upload !!");
        if (!data.isEmpty()) {
            try {
                byte[] bytes = data.getBytes();
                BufferedOutputStream stream = new BufferedOutputStream(
                        new FileOutputStream("./profilepictures/" + new File(name + ".png"))
                );
                stream.write(bytes);
                stream.close();
                apiMessasge.setCode(1);
            } catch (Exception e) {
                System.out.println("Exception : " + e.getMessage());
                for (int i = 0; i < e.getStackTrace().length; i++) {
                    System.out.println(e.getStackTrace()[i].toString());
                }
                apiMessasge.setCode(-1);
            }
        }
        return apiMessasge;
    }
}

This is in Android

Uri resultUri = result.getUri();
File file = new File(resultUri.getPath());

RequestBody requestFile = RequestBody.create(MediaType.parse("multipart/form-data"), file);

MultipartBody.Part body = MultipartBody.Part.createFormData("file", file.getName(), requestFile);

And this is in APiService.class

@Multipart
@Headers("Content-Type:application/json")
@POST("/beongae/api/{version}/profile/upload/{name}")
Call<ApiMessasge> upload(@Path("version") int version, @Path("name") String fileName
        , @Part MultipartBody.Part file);

And This is the error message in Spring Boot

2017-09-19 21:34:51.179 ERROR 22271 --- [nio-8080-exec-2] oaccC[.[.[/].[dispatcherServlet] : Servlet.service() for servlet [dispatcherServlet] in context with path [] threw exception [Request processing failed; nested exception is org.springframework.web.multipart.MultipartException: Current request is not a multipart request] with root cause org.springframework.web.multipart.MultipartException: Current request is not a multipart request at org.springframework.web.servlet.mvc.method.annotation.RequestPartMethodArgumentResolver.resolveArgument(RequestPartMethodArgumentResolver.java:151) ~[spring-webmvc-4.3.10.RELEASE.jar!/:4.3.10.RELEASE] at org.springframework.web.method.support.HandlerMethodArgumentResolverComposite.resolveArgument(HandlerMethodArgumentResolverComposite.java:121) ~[spring-web-4.3.10.RELEASE.jar!/:4.3.10.RELEASE] at org.springframework.web.method.support.InvocableHandlerMethod.getMethodArgumentValues(InvocableHandlerMethod.java:158) ~[spring-web-4.3.10.RELEASE.jar!/:4.3.10.RELEASE] at org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:128) ~[spring-web-4.3.10.RELEASE.jar!/:4.3.10.RELEASE] at org.springframework.web.servl et.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:97) ~[spring-webmvc-4.3.10.RELEASE.jar!/:4.3.10.RELEASE] at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandlerMethod(RequestMappingHandlerAdapter.java:827) ~[spring-webmvc-4.3.10.RELEASE.jar!/:4.3.10.RELEASE] at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:738) ~[spring-webmvc-4.3.10.RELEASE.jar!/:4.3.10.RELEASE] at org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:85) ~[spring-webmvc-4.3.10.RELEASE.jar!/:4.3.10.RELEASE] at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:967) ~[spring-webmvc-4.3.10.RELEASE.jar!/:4.3.10.RELEASE] at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:901) ~[spring-webmvc-4.3.10.RELEASE.jar!/: 4.3.10.RELEASE] at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:970) ~[spring-webmvc-4.3.10.RELEASE.jar!/:4.3.10.RELEASE] at org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:872) ~[spring-webmvc-4.3.10.RELEASE.jar!/:4.3.10.RELEASE] at javax.servlet.http.HttpServlet.service(HttpServlet.java:661) ~[tomcat-embed-core-8.5.16.jar!/:8.5.16] at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:846) ~[spring-webmvc-4.3.10.RELEASE.jar!/:4.3.10.RELEASE] at javax.servlet.http.HttpServlet.service(HttpServlet.java:742) ~[tomcat-embed-core-8.5.16.jar!/:8.5.16] at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:231) ~[tomcat-embed-core-8.5.16.jar!/:8.5.16] at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) ~[tomcat-embed-core-8.5.16.jar!/:8.5.16] at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52 ) ~[tomcat-embed-websocket-8.5.16.jar!/:8.5.16] at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) ~[tomcat-embed-core-8.5.16.jar!/:8.5.16] at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) ~[tomcat-embed-core-8.5.16.jar!/:8.5.16] at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:197) ~[spring-web-4.3.10.RELEASE.jar!/:4.3.10.RELEASE] at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) ~[spring-web-4.3.10.RELEASE.jar!/:4.3.10.RELEASE] at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) ~[tomcat-embed-core-8.5.16.jar!/:8.5.16] at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) ~[tomcat-embed-core-8.5.16.jar!/:8.5.16] at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:198) ~[tomcat- embed-core-8.5.16.jar!/:8.5.16] at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:96) [tomcat-embed-core-8.5.16.jar!/:8.5.16] at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:478) [tomcat-embed-core-8.5.16.jar!/:8.5.16] at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:140) [tomcat-embed-core-8.5.16.jar!/:8.5.16] at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:80) [tomcat-embed-core-8.5.16.jar!/:8.5.16] at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:87) [tomcat-embed-core-8.5.16.jar!/:8.5.16] at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:342) [tomcat-embed-core-8.5.16.jar!/:8.5.16] at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:799) [tomcat-embed-core-8.5.16.jar!/:8.5.16] at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:66) [tomcat-embed-core-8.5.16. jar!/:8.5.16] at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:868) [tomcat-embed-core-8.5.16.jar!/:8.5.16] at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1455) [tomcat-embed-core-8.5.16.jar!/:8.5.16] at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49) [tomcat-embed-core-8.5.16.jar!/:8.5.16] at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) [na:1.8.0_131] at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) [na:1.8.0_131] at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) [tomcat-embed-core-8.5.16.jar!/:8.5.16] at java.lang.Thread.run(Thread.java:748) [na:1.8.0_131]

But, It's done well when I use Postman.

Please tell me what is the problem and how to solve

Answer 1

尝试稍微修改服务，然后尝试

 @Part("file\"; filename=\"filename.png\" ")