1.web.xml必须是3.0以上版本

2.在web.xml中的spring 的DispatcherServlet配置multipart-config

    		
     
      spring
     		
     
      org.springframework.web.servlet.DispatcherServlet
     		
     			
      
       contextConfigLocation
      			
      
       classpath:webApplicationContext.xml
      		
     		
     
      1
     	        
     			
      
       1000000
      		
     	
    	
    		
     
      spring
     		
     
      /
     	
    

3.spring上下文中配置StandardServletMultipartResolver

4.Controller中实现

@RequestMapping(value = "", method = RequestMethod.POST)@ResponseBodypublic ResponseEntity
     uploadFile(HttpServletRequest request) {    Part part = request.getPart(inputName);    InputStream in = part.getInputStream();}

5.参考

java.lang.IllegalStateException: Unable to process parts as no multi-part configuration has been provided	at org.apache.catalina.connector.Request.parseParts(Request.java:2680)	at org.apache.catalina.connector.Request.getParts(Request.java:2647)	at org.apache.catalina.connector.RequestFacade.getParts(RequestFacade.java:1083)	at org.springframework.web.multipart.support.StandardMultipartHttpServletRequest.parseRequest(StandardMultipartHttpServletRequest.java:92)	at org.springframework.web.multipart.support.StandardMultipartHttpServletRequest.
    
     (StandardMultipartHttpServletRequest.java:85)	at org.springframework.web.multipart.support.StandardServletMultipartResolver.resolveMultipart(StandardServletMultipartResolver.java:76)	at org.springframework.web.servlet.DispatcherServlet.checkMultipart(DispatcherServlet.java:1091)	at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:930)	at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:895)	at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:967)	at org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:869)	at javax.servlet.http.HttpServlet.service(HttpServlet.java:648)	at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:843)	at javax.servlet.http.HttpServlet.service(HttpServlet.java:729)	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:291)	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)	at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:239)	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:212)	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:106)	at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:502)	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:141)	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:79)	at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:616)	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:88)	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:521)	at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1096)	at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:674)	at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1500)	at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.run(NioEndpoint.java:1456)	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)	at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)	at java.lang.Thread.run(Thread.java:745)
    

6.2原因

        
     
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