title: How to config "CommonsMultipartResolver" in spring4 without xml to upload file
body: <p>I use xml config spring4 is work well.like this：</p>
  
  <pre><code>&lt;bean id="multipartResolver"
      class="org.springframework.web.multipart.commons.CommonsMultipartResolver"
      p:defaultEncoding="utf-8" &gt;
      &lt;!-- one of the properties available; the maximum file size in bytes --&gt;  
      &lt;!-- &lt;property name="maxUploadSize" value="40000000" /&gt; --&gt;  
  &lt;/bean&gt;
  </code></pre>
  
  <p>when I config spring4 without xml.like this:</p>
  
  <pre><code>@Configuration
  @ComponentScan({ "common.user", "service" })
  @EnableWebMvc
  public class SpringMVCConfig {
  
  @Bean
  public ViewResolver createInternalResourceViewResolver() {
      InternalResourceViewResolver viewResolver = new InternalResourceViewResolver();
      viewResolver.setViewClass(JstlView.class);
      viewResolver.setContentType("text/html");
      viewResolver.setPrefix("/view/");
      //viewResolver.setSuffix(".jsp");
      return viewResolver;
  }
  
  @Bean
  public DefaultServletHttpRequestHandler createDefaultServletHttpRequestHandler() {
      return new DefaultServletHttpRequestHandler();
  }
  
  
  @Bean
  public CommonsMultipartResolver createMultipartResolver() {
      CommonsMultipartResolver resolver=new CommonsMultipartResolver();
      resolver.setDefaultEncoding("utf-8");
      return resolver;
  }
  </code></pre>
  
  <p>}</p>
  
  <p>It throws an exception:</p>
  
  <pre><code> 九月 30, 2014 6:01:08 下午 org.apache.catalina.core.StandardWrapperValve invoke
  严重: Servlet.service() for servlet [dispatcher] in context with path [] threw exception [Request processing failed; nested exception is java.lang.IllegalStateException: Current request is not of type [org.springframework.web.multipart.MultipartHttpServletRequest]: org.apache.catalina.connector.RequestFacade@5ebfad8d] with root cause
  java.lang.IllegalStateException: Current request is not of type [org.springframework.web.multipart.MultipartHttpServletRequest]: org.apache.catalina.connector.RequestFacade@5ebfad8d
      at org.springframework.web.servlet.mvc.method.annotation.ServletRequestMethodArgumentResolver.resolveArgument(ServletRequestMethodArgumentResolver.java:97)
      at org.springframework.web.method.support.HandlerMethodArgumentResolverComposite.resolveArgument(HandlerMethodArgumentResolverComposite.java:79)
      at org.springframework.web.method.support.InvocableHandlerMethod.getMethodArgumentValues(InvocableHandlerMethod.java:157)
      at org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:124)
      at org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:104)
      at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandleMethod(RequestMappingHandlerAdapter.java:781)
      at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:721)
      at org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:83)
      at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:943)
      at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:877)
      at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:961)
      at org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:863)
      at javax.servlet.http.HttpServlet.service(HttpServlet.java:646)
      at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:837)
      at javax.servlet.http.HttpServlet.service(HttpServlet.java:727)
      at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:303)
      at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
      at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
      at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241)
      at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
      at common.servlet.RootFilter.doFilter(RootFilter.java:71)
      at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241)
      at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
      at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:220)
      at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:122)
      at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:501)
      at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:171)
      at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:103)
      at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:950)
      at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:116)
      at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:408)
      at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1070)
      at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:611)
      at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:316)
      at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
      at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
      at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
      at java.lang.Thread.run(Unknown Source)
  </code></pre>