java - 骆驼发送多部分/表单数据请求
问题描述
我有一个应用程序,它发送一个 multipart/form-data 和一个接收 multipart/form-data 请求的应用程序。
在接收器中处理:
InputStreamCache postBody = exchange.getIn().getBody(InputStreamCache.class);
MultipartUploadContext mux = new MultipartUploadContext(postBody, exchange.getIn().getHeader("Content-Type",String.class));
Map<String,Object> params = mux.parseRequest();
解析请求,从 Postman/Swagger 发送工作正常。我在将我的骆驼发送器与我的骆驼接收器集成时遇到了麻烦。
这是发件人路线:
from("direct:uploadFileToRest").routeId("uploadFileToRest").
process("uploadFileRequestProcessor").
setHeader(Exchange.HTTP_METHOD, simple("POST")).
setHeader(Exchange.CONTENT_TYPE, constant("multipart/form-data")).
to("myrecieverapp/full_upload").
id("fileUploadRestSending").
log(LoggingLevel.DEBUG, "RESPONSE BODY ${body}").
end();
发件人处理器:
MultipartEntityBuilder multipartEntityBuilder = MultipartEntityBuilder
.create()
.addTextBody("name", "SomeName")
.addBinaryBody("content", array_with_byte_content_here);
exchange.getOut().setBody(multipartEntityBuilder.build());
出现以下错误:
No body available of type: java.io.InputStream but has value: org.apache.http.entity.mime.MultipartFormEntity@35315261 of type: org.apache.http.entity.mime.MultipartFormEntity on: Message[ID-VRN26-1529401997491-0-3]. Caused by: No type converter available to convert from type: org.apache.http.entity.mime.MultipartFormEntity to the required type: java.io.InputStream with value org.apache.http.entity.mime.MultipartFormEntity@35315261.
在查找了相同的问题后,我找到了将 body 更改为的建议:
exchange.getOut().setBody(multipartEntityBuilder.build().getContent());
但是,它会导致接收方出现问题:
the request was rejected because no multipart boundary was found\r\n\tat org.apache.commons.fileupload.FileUploadBase$FileItemIteratorImpl.<init>(FileUploadBase.java:990)\r\n\tat org.apache.commons.fileupload.FileUploadBase.getItemIterator(FileUploadBase.java:310)\r\n\tat org.apache.commons.fileupload.FileUploadBase.parseRequest(FileUploadBase.java:334)\r\n\tat ru.cinimex.abb.fileuploader.util.MultipartUploadContext.parseRequest(MultipartUploadContext.java:29)\r\n\tat ru.cinimex.abb.fileuploader.camel.processors.ValidateFullUploadRequestProcessor.process(ValidateFullUploadRequestProcessor.java:33)\r\n\tat org.apache.camel.processor.DelegateSyncProcessor.process(DelegateSyncProcessor.java:63)\r\n\tat org.apache.camel.processor.RedeliveryErrorHandler.process(RedeliveryErrorHandler.java:548)\r\n\tat
我读过这些帖子:
http://hilton.org.uk/blog/camel-multipart-form-data
但找不到解决方案
骆驼版:org.apache.camel:camel-cxf:2.21.0.000033-fuse-000001-redhat-1
解决方案
您需要设置Content-Type
具有正确边界的标题,该标题在MultipartEntityBuilder
. 修改您的发件人处理器以设置此标头。
HttpEntity resultEntity = multipartEntityBuilder.build();
exchange.getOut().setHeader(Exchange.CONTENT_TYPE, resultEntity.getContentType().getValue());
exchange.getOut().setBody(resultEntity.getContent());
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