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23.13. Note about multipart parsing and working with other frameworks There are a lot of frameworks doing multipart parsing automatically with the help of filters and interceptors. Like org.jboss.seam.web.MultipartFilter in Seam or org.springframework.web.multipart.MultipartResolver in Spring. However the incoming multipart request stream can be parsed only once. Resteasy users working with multipart should make sure that nothing parses the stream before Resteasy gets it.