Question

将Moxy Json功能从Jackson功能配置到Springboot + Jersey应用程序时遇到的问题。

已完成更改-

在ResourceConfig扩展类中-

//register(JacksonJsonProvider.class); #Commented
register(MoxyJsonFeature.class);

在Pom.xml文件-

中添加了以下内容

<dependency>
   <groupId>org.glassfish.jersey.media</groupId>
   <artifactId>jersey-media-moxy</artifactId>
   <version>2.23.2</version>
</dependency>

API

@Produces(MediaType.APPLICATION_JSON)
@Path("/")
@Api(value = "xyz")
public class XyzController {
    @GET
    @Path(Urls.XYZ)
    @ApiOperation(value = "xyz", notes = "xyz", nickname = "xyz")
    public Long xyz(@Valid @BeanParam final FetchParams fetchParams) {
        return testService.xyz(fetchParams);
    }
}

API面临的异常-

Caused by: org.glassfish.jersey.message.internal.MessageBodyProviderNotFoundException: MessageBodyWriter not found for media type=application/json, type=class java.lang.Long, genericType=class java.lang.Long.
at org.glassfish.jersey.message.internal.WriterInterceptorExecutor$TerminalWriterInterceptor.aroundWriteTo(WriterInterceptorExecutor.java:247)
at org.glassfish.jersey.message.internal.WriterInterceptorExecutor.proceed(WriterInterceptorExecutor.java:162)
at org.glassfish.jersey.server.internal.JsonWithPaddingInterceptor.aroundWriteTo(JsonWithPaddingInterceptor.java:106)
at org.glassfish.jersey.message.internal.WriterInterceptorExecutor.proceed(WriterInterceptorExecutor.java:162)
at org.glassfish.jersey.server.internal.MappableExceptionWrapperInterceptor.aroundWriteTo(MappableExceptionWrapperInterceptor.java:86)

Answer 1

使用正确的@Produces注释时，问题已为我解决。

在这种情况下，它曾经是@Produces（MediaType.APPLICATION_JSON）。将其更改为@Produces（MediaType.TEXT_PLAIN）解决了该问题。

由于输出为Long，因此它将通过BasicTypesMessageProvider写程序模型，该模型仅针对“文本/纯文本”进行序列化。

@Produces({"text/plain"})
@Consumes({"text/plain"})
@Singleton
final class BasicTypesMessageProvider extends AbstractMessageReaderWriterProvider<Object> {...}

MessageBodyProviderNotFoundException：找不到针对媒体type = application / json，type = class java.lang.Long的MessageBodyWriter

1 个答案: