问题

抱歉，这段文本太长，无法一次性翻译完成。请分为多个较小的部分，我将分段为您翻译。以下是第一部分的翻译：

我正在尝试创建一个Util类，使用StringBuilder生成一个仅包含multipart/form-data请求的Http请求。所以这是在将文件和文本属性传递给我的工具类之后的输出：

Content-Type: multipart/form-data; boundary=------------------------464842921662621063770712
Content-Length: 608
Host: localhost:8080
Connection: Keep-Alive
Accept-Encoding: gzip
User-Agent: okhttp/4.2.2

--------------------------464842921662621063770712
Content-Disposition: form-data; name=&quot;file&quot;; filename=&quot;upload-file.txt&quot;
Content-Type: text/plain; charset=UTF-8

Lorem ipsum dolor sit amet, consectetur adipisicing elit. At, beatae consectetur, doloribus iste nemo pariatur, provident quae quam quis repellendus totam voluptatibus. Doloribus, itaque, porro? Ab autem deleniti magni quidem!

--------------------------464842921662621063770712
Content-Disposition: form-data; name=&quot;businessContext&quot;
Content-Type: text/plain; charset=UTF-8
business-context

--------------------------464842921662621063770712--

如果您需要翻译文本的其他部分，请将其分开发送。

英文:

i am trying to create Util class to generate an Http multipart/form-data request using only StringBuilder.
so this is the output that i have after passing a file and a text attribute to my util class:

Content-Type: multipart/form-data; boundary=------------------------464842921662621063770712
Content-Length: 608
Host: localhost:8080
Connection: Keep-Alive
Accept-Encoding: gzip
User-Agent: okhttp/4.2.2

--------------------------464842921662621063770712
Content-Disposition: form-data; name=&quot;file&quot;;filename=&quot;upload-file.txt&quot;
Content-Type: text/plain; charset=UTF-8

Lorem ipsum dolor sit amet, consectetur adipisicing elit. At, beatae consectetur, doloribus iste nemo pariatur, provident quae quam quis repellendus totam voluptatibus. Doloribus, itaque, porro? Ab autem deleniti magni quidem!

--------------------------464842921662621063770712
Content-Disposition: form-data; name=&quot;businessContext&quot;
Content-Type: text/plain; charset=UTF-8
business-context

--------------------------464842921662621063770712--
]

but when sending this multipart-request with okhttp to runngin spring-boot application it throws this error:

org.apache.tomcat.util.http.fileupload.MultipartStream$MalformedStreamException: Stream ended unexpectedly
	at org.apache.tomcat.util.http.fileupload.MultipartStream.readHeaders(MultipartStream.java:520) ~[tomcat-embed-core-9.0.37.jar:9.0.37]
	at org.apache.tomcat.util.http.fileupload.impl.FileItemIteratorImpl.findNextItem(FileItemIteratorImpl.java:232) ~[tomcat-embed-core-9.0.37.jar:9.0.37]
	at org.apache.tomcat.util.http.fileupload.impl.FileItemIteratorImpl.&lt;init&gt;(FileItemIteratorImpl.java:131) ~[tomcat-embed-core-9.0.37.jar:9.0.37]
	at org.apache.tomcat.util.http.fileupload.FileUploadBase.getItemIterator(FileUploadBase.java:255) ~[tomcat-embed-core-9.0.37.jar:9.0.37]
	at org.apache.tomcat.util.http.fileupload.FileUploadBase.parseRequest(FileUploadBase.java:279) ~[tomcat-embed-core-9.0.37.jar:9.0.37]
	at org.apache.catalina.connector.Request.parseParts(Request.java:2869) ~[tomcat-embed-core-9.0.37.jar:9.0.37]
	at org.apache.catalina.connector.Request.parseParameters(Request.java:3202) ~[tomcat-embed-core-9.0.37.jar:9.0.37]
	at org.apache.catalina.connector.Request.getParameterNames(Request.java:1170) ~[tomcat-embed-core-9.0.37.jar:9.0.37]
	at org.apache.catalina.connector.Request.getParameterMap(Request.java:1149) ~[tomcat-embed-core-9.0.37.jar:9.0.37]
	at org.apache.catalina.connector.RequestFacade.getParameterMap(RequestFacade.java:443) ~[tomcat-embed-core-9.0.37.jar:9.0.37]
	at org.springframework.web.servlet.DispatcherServlet.lambda$logRequest$2(DispatcherServlet.java:964) ~[spring-webmvc-5.2.8.RELEASE.jar:5.2.8.RELEASE]
	at org.springframework.core.log.LogFormatUtils.traceDebug(LogFormatUtils.java:86) ~[spring-core-5.2.8.RELEASE.jar:5.2.8.RELEASE]
	at org.springframework.web.servlet.DispatcherServlet.logRequest(DispatcherServlet.java:956) ~[spring-webmvc-5.2.8.RELEASE.jar:5.2.8.RELEASE]
	at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:911) ~[spring-webmvc-5.2.8.RELEASE.jar:5.2.8.RELEASE]
	at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:1006) ~[spring-webmvc-5.2.8.RELEASE.jar:5.2.8.RELEASE]
	at org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:909) ~[spring-webmvc-5.2.8.RELEASE.jar:5.2.8.RELEASE]
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:652) ~[tomcat-embed-core-9.0.37.jar:4.0.FR]
	at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:883) ~[spring-webmvc-5.2.8.RELEASE.jar:5.2.8.RELEASE]
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:733) ~[tomcat-embed-core-9.0.37.jar:4.0.FR]
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:231) ~[tomcat-embed-core-9.0.37.jar:9.0.37]
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) ~[tomcat-embed-core-9.0.37.jar:9.0.37]
	at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:53) ~[tomcat-embed-websocket-9.0.37.jar:9.0.37]
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) ~[tomcat-embed-core-9.0.37.jar:9.0.37]
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) ~[tomcat-embed-core-9.0.37.jar:9.0.37]
	at org.springframework.web.filter.RequestContextFilter.doFilterInternal(RequestContextFilter.java:100) ~[spring-web-5.2.8.RELEASE.jar:5.2.8.RELEASE]
	at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119) ~[spring-web-5.2.8.RELEASE.jar:5.2.8.RELEASE]
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) ~[tomcat-embed-core-9.0.37.jar:9.0.37]
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) ~[tomcat-embed-core-9.0.37.jar:9.0.37]
	at org.springframework.web.filter.FormContentFilter.doFilterInternal(FormContentFilter.java:93) ~[spring-web-5.2.8.RELEASE.jar:5.2.8.RELEASE]
	at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119) ~[spring-web-5.2.8.RELEASE.jar:5.2.8.RELEASE]
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) ~[tomcat-embed-core-9.0.37.jar:9.0.37]
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) ~[tomcat-embed-core-9.0.37.jar:9.0.37]
	at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:201) ~[spring-web-5.2.8.RELEASE.jar:5.2.8.RELEASE]
	at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119) ~[spring-web-5.2.8.RELEASE.jar:5.2.8.RELEASE]
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) ~[tomcat-embed-core-9.0.37.jar:9.0.37]
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) ~[tomcat-embed-core-9.0.37.jar:9.0.37]
	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:202) ~[tomcat-embed-core-9.0.37.jar:9.0.37]
	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:96) [tomcat-embed-core-9.0.37.jar:9.0.37]
	at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:541) [tomcat-embed-core-9.0.37.jar:9.0.37]
	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:139) [tomcat-embed-core-9.0.37.jar:9.0.37]
	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:92) [tomcat-embed-core-9.0.37.jar:9.0.37]
	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:74) [tomcat-embed-core-9.0.37.jar:9.0.37]
	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:343) [tomcat-embed-core-9.0.37.jar:9.0.37]
	at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:373) [tomcat-embed-core-9.0.37.jar:9.0.37]
	at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:65) [tomcat-embed-core-9.0.37.jar:9.0.37]
	at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:868) [tomcat-embed-core-9.0.37.jar:9.0.37]
	at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1589) [tomcat-embed-core-9.0.37.jar:9.0.37]
	at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49) [tomcat-embed-core-9.0.37.jar:9.0.37]
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) [na:1.8.0_252]
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) [na:1.8.0_252]
	at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) [tomcat-embed-core-9.0.37.jar:9.0.37]
	at java.lang.Thread.run(Thread.java:748) [na:1.8.0_252]

could someone please help me verify what is wrong with my multipart request!

答案1

得分: 0

turns out, i was using a bad end of the line "\n", the correct one is "\r\n"

see this thread

英文:

turns out, i was using a bad end of the line "\n", the correct one is "\r\n"

see this thread

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创建一个使用Java的HTTP multipart/form-data请求。

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