Java 没有适用于媒体类型的MessageBodyWriter“；“多部分/表单数据”；

我正在尝试创建一个jersey客户端，以通过多部分请求命中服务器。
我将文件作为

java.io.ByteArrayOutputStream

类型流上传。
我搜索了错误，发现了这个
并添加了

在创建
客户端时注册（MultiPartFeature.class）
，但无效。

我可能只需要朝正确的方向轻推一下。谢谢


我没有使用Maven或任何东西。



我的
java
文件中的相关部分是：

FormDataMultiPart multiPart = new FormDataMultiPart();
FormDataContentDisposition.FormDataContentDispositionBuilder dispositionBuilder = FormDataContentDisposition
 .name("file");

dispositionBuilder.fileName("file.zip");
FormDataContentDisposition formDataContentDisposition = dispositionBuilder.build();

/*
 * byteArrayOutputStream is of type java.io.ByteArrayOutputStream
 * and contains the file I wish to upload.
 */
multiPart.bodyPart(
 new FormDataBodyPart("file", byteArrayOutputStream, MediaType.APPLICATION_OCTET_STREAM_TYPE)
 .contentDisposition(formDataContentDisposition));

Entity < FormDataMultiPart > entity = Entity.entity(multiPart, MediaType.MULTIPART_FORM_DATA_TYPE);

Client client = ClientBuilder.newClient(new ClientConfig().register(MultiPartFeature.class));
WebTarget webTarget = client.target("http://localhost:3000/path/to/service");

// send request

Invocation.Builder invocationBuilder = webTarget.request();
Response response = invocationBuilder.post(entity);
return response;

我在ApacheTomcat8.5运行时服务器上尝试在Eclipse内部运行时遇到以下错误

SEVERE: Servlet.service() for servlet [Jersey Web Application] in context with path [/TestRest] threw exception [javax.ws.rs.ProcessingException: No available MessageBodyWriter for class "class java.io.ByteArrayOutputStream" and media type "multipart/form-data".] with root cause
java.lang.IllegalArgumentException: No available MessageBodyWriter for class "class java.io.ByteArrayOutputStream" and media type "multipart/form-data".
    at org.glassfish.jersey.media.multipart.internal.MultiPartWriter.writeTo(MultiPartWriter.java:229)
    at org.glassfish.jersey.media.multipart.internal.MultiPartWriter.writeTo(MultiPartWriter.java:79)
    at org.glassfish.jersey.message.internal.WriterInterceptorExecutor$TerminalWriterInterceptor.invokeWriteTo(WriterInterceptorExecutor.java:265)
    at org.glassfish.jersey.message.internal.WriterInterceptorExecutor$TerminalWriterInterceptor.aroundWriteTo(WriterInterceptorExecutor.java:250)
    at org.glassfish.jersey.message.internal.WriterInterceptorExecutor.proceed(WriterInterceptorExecutor.java:162)
    at org.glassfish.jersey.message.internal.MessageBodyFactory.writeTo(MessageBodyFactory.java:1130)

没有处理输出流的
MessageBodyWriter
。使用
输入流
代替
好的，注册MultiPartFeature.class

Client Client=ClientBuilder.newClient（newclientconfig（）.register（MultiPartFeature.class））

但您必须处理和注册响应类型，假设您上载了一个文件，并且响应的媒体类型是json，那么您必须添加这样的寄存器

Client Client=ClientBuilder.newClient（newclientconfig（）.register（MultiPartFeature.class）.register（JacksonFeature.class））

我认为您需要使用输入流（或字节[]），而不是输出流。不过，您也可以使用InputStream，这样就不会耗尽资源memory@peeskillet将代码转换为利用InputStream（ByteArrayInputStream）对我来说很有用！你能加上它作为答案吗？干杯
SEVERE: Servlet.service() for servlet [Jersey Web Application] in context with path [/TestRest] threw exception [javax.ws.rs.ProcessingException: No available MessageBodyWriter for class "class java.io.ByteArrayOutputStream" and media type "multipart/form-data".] with root cause
java.lang.IllegalArgumentException: No available MessageBodyWriter for class "class java.io.ByteArrayOutputStream" and media type "multipart/form-data".
    at org.glassfish.jersey.media.multipart.internal.MultiPartWriter.writeTo(MultiPartWriter.java:229)
    at org.glassfish.jersey.media.multipart.internal.MultiPartWriter.writeTo(MultiPartWriter.java:79)
    at org.glassfish.jersey.message.internal.WriterInterceptorExecutor$TerminalWriterInterceptor.invokeWriteTo(WriterInterceptorExecutor.java:265)
    at org.glassfish.jersey.message.internal.WriterInterceptorExecutor$TerminalWriterInterceptor.aroundWriteTo(WriterInterceptorExecutor.java:250)
    at org.glassfish.jersey.message.internal.WriterInterceptorExecutor.proceed(WriterInterceptorExecutor.java:162)
    at org.glassfish.jersey.message.internal.MessageBodyFactory.writeTo(MessageBodyFactory.java:1130)