在Spring上默认为‘application/octet’，设置为null

Question

我试图在Spring中创建一个使用JSON的简单Post请求处理程序。

@RestController
@EnableWebMvc
public class WebFormController
{
    @RequestMapping(path="/process-contact-form", method = RequestMethod.POST)
    public ResponseEntity<String> processContact(@RequestBody Form form) throws Exception
    {
        System.out.println("TEST TEST: Ran");
        return  new ResponseEntity<String>("Thank you for contacting us, we'll respond soon.", HttpStatus.OK);
    }
}

默认情况下，我的理解是这将消耗application/json。然而，当我使用curl或Postman发出请求时，我得到了Spring的响应.

DefaultHandlerExceptionResolver : Resolved [org.springframework.web.HttpMediaTypeNotSupportedException: Content type 'application/octet-stream' not supported

在“邮递员”中，我得到了“415不受支持的媒体类型”。

如果我明确定义“消耗”属性..。

@RequestMapping(path="/process-contact-form", method = RequestMethod.POST, consumes=MediaType.APPLICATION_JSON_VALUE)

春靴还这个..。

DefaultHandlerExceptionResolver : Resolved [org.springframework.web.HttpMediaTypeNotSupportedException: Content type '' not supported

我尝试过将the设置为"application/json“、x form-urlencoded和纯文本，并从Postman发送这些类型的请求，但是我得到了相同的结果。

我是在aws-无服务器-java容器https://github.com/awslabs/aws-serverless-java-container/wiki/Quick-start---Spring-Boot上构建的，我是从SAM本地CLI运行它的。

编辑

我切换日志到调试以获得更多的细节..。

2020-05-08 17:53:40.692 DEBUG 1 --- [           main] s.b.w.s.f.OrderedCharacterEncodingFilter : Filter 'characterEncodingFilter' configured for use
2020-05-08 17:53:40.692 DEBUG 1 --- [           main] c.a.s.p.i.servlet.FilterChainHolder      : Starting REQUEST: filter 0-characterEncodingFilter
2020-05-08 17:53:40.698 DEBUG 1 --- [           main] c.a.s.p.i.s.AwsProxyHttpServletRequest   : Called set character encoding to UTF-8 on a request without a content type. Character encoding will not be set
2020-05-08 17:53:40.698 DEBUG 1 --- [           main] c.a.s.p.i.servlet.FilterChainHolder      : Starting REQUEST: filter 2-com.amazonaws.serverless.proxy.internal.servlet.FilterChainManager$ServletExecutionFilter
2020-05-08 17:53:40.729 DEBUG 1 --- [           main] o.s.web.servlet.DispatcherServlet        : POST "/process-contact-form", parameters={}
2020-05-08 17:53:40.732 DEBUG 1 --- [           main] c.a.s.p.i.servlet.AwsHttpServletRequest  : Trying to access session. Lambda functions are stateless and should not rely on the session
2020-05-08 17:53:40.758 DEBUG 1 --- [           main] c.a.s.p.i.s.AwsHttpServletResponse       : Response buffer flushed with 0 bytes, latch=1
2020-05-08 17:53:40.761  WARN 1 --- [           main] .w.s.m.s.DefaultHandlerExceptionResolver : Resolved [org.springframework.web.HttpMediaTypeNotSupportedException: Content type '' not supported]
2020-05-08 17:53:40.761 DEBUG 1 --- [           main] o.s.web.servlet.DispatcherServlet        : Exiting from "ERROR" dispatch, status 415
2020-05-08 17:53:40.763 DEBUG 1 --- [           main] c.a.s.p.i.servlet.AwsHttpServletRequest  : Trying to access session. Lambda functions are stateless and should not rely on the session
2020-05-08 17:53:40.768 DEBUG 1 --- [           main] c.a.s.p.i.servlet.FilterChainHolder      : Executed ERROR: filter 3-com.amazonaws.serverless.proxy.internal.servlet.FilterChainManager$ServletExecutionFilter
2020-05-08 17:53:40.769 DEBUG 1 --- [           main] c.a.s.p.i.servlet.FilterChainHolder      : Executed ERROR: filter 3-characterEncodingFilter
2020-05-08 17:53:40.779  INFO 1 --- [           main] c.a.s.p.internal.LambdaContainerHandler  : 127.0.0.1:56893 null- null [08/05/2020:17:53:40Z] "POST /process-contact-form null" 415 - "-" "-" combined
2020-05-08 17:53:40.818 DEBUG 1 --- [           main] s.n.www.protocol.http.HttpURLConnection  : sun.net.www.MessageHeader@c9d82f99 pairs: {POST /2018-06-01/runtime/invocation/807c7e06-86f6-1bd3-1055-78b464604573/response HTTP/1.1: null}{Docker-Lambda-Invoke-Wait: 1588960412475}{Docker-Lambda-Init-End: 1588960420587}{User-Agent: Java/1.8.0_201}{Host: 127.0.0.1:9001}{Accept: text/html, image/gif, image/jpeg, *; q=.2, */*; q=.2}{Connection: keep-alive}{Content-type: application/x-www-form-urlencoded}{Content-Length: 104}
2020-05-08 17:53:40.822 DEBUG 1 --- [           main] s.n.www.protocol.http.HttpURLConnection  : sun.net.www.MessageHeader@6f0129144 pairs: {null: HTTP/1.1 202 Accepted}{Content-Type: application/json}{Date: Fri, 08 May 2020 17:53:40 GMT}{Transfer-Encoding: chunked}
2020-05-08 17:53:40.825 DEBUG 1 --- [           main] s.n.www.protocol.http.HttpURLConnection  : sun.net.www.MessageHeader@18fdb6cf5 pairs: {GET /2018-06-01/runtime/invocation/next HTTP/1.1: null}{User-Agent: Java/1.8.0_201}{Host: 127.0.0.1:9001}{Accept: text/html, image/gif, image/jpeg, *; q=.2, */*; q=.2}{Connection: keep-alive}

编辑

StreamLambdaHandler

public class StreamLambdaHandler implements RequestStreamHandler {
    private static SpringBootLambdaContainerHandler<AwsProxyRequest, AwsProxyResponse> handler;
    static {
        try {
            handler = SpringBootLambdaContainerHandler.getAwsProxyHandler(Application.class);
        } catch (ContainerInitializationException e) {
            // if we fail here. We re-throw the exception to force another cold start
            e.printStackTrace();
            throw new RuntimeException("Could not initialize Spring Boot application", e);
        }
    }

    @Override
    public void handleRequest(InputStream inputStream, OutputStream outputStream, Context context)
            throws IOException {
        System.out.println("TEST TEST " + inputStream.toString() + " " + outputStream.toString());
        handler.proxyStream(inputStream, outputStream, context);
    }
}

Answer 1

我有一些帮助，从零开始应用程序，并使用不同的库。注释现在看起来是这样的。

@Path("/submit")
@Component
@Slf4j
public class SubmitController {

    private JiraService jira;
    private ConfigurationRepository configurations;

    @Autowired
    public SubmitController(JiraService jira, ConfigurationRepository configurations) {
        this.jira = jira;
        this.configurations = configurations;
    }

    @POST
    @Path("/{id}")
    @AnonymousAllowed
    @Produces({APPLICATION_JSON, MediaType.APPLICATION_XML})
    public Response submitForm(@PathParam("id") String id, String body) {
        // Stuff
    }