多部分Http請求

如何初始化多部分請求..？我正在使用multipart/form-data內容類型上傳文件，但我無法在控制器中獲得多部分請求。因此，如何在我的控制器中獲得多部分請求。在此先感謝。我收到錯誤這樣的..多部分Http請求

Jun 13, 2012 2:01:05 PM org.apache.catalina.core.StandardWrapperValve invoke 
SEVERE: Servlet.service() for servlet [appServlet] in context with path [/Login] threw exception [Request processing failed; nested exception is java.lang.IllegalStateException: Multipart request not initialized] with root cause 
java.lang.IllegalStateException: Multipart request not initialized 
at org.springframework.web.multipart.support.AbstractMultipartHttpServletRequest.initializeMultipart(AbstractMultipartHttpServletRequest.java:107) 
at org.springframework.web.multipart.support.AbstractMultipartHttpServletRequest.getMultipartFiles(AbstractMultipartHttpServletRequest.java:97) 
at org.springframework.web.multipart.support.AbstractMultipartHttpServletRequest.getFile(AbstractMultipartHttpServletRequest.java:60) 
at com.mpm.common.controller.FileUploadController.create(FileUploadController.java:62) 
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) 
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57) 
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) 
at java.lang.reflect.Method.invoke(Method.java:601) 
at org.springframework.web.bind.annotation.support.HandlerMethodInvoker.invokeHandlerMethod(HandlerMethodInvoker.java:176) 
at org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter.invokeHandlerMethod(AnnotationMethodHandlerAdapter.java:436) 
at org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter.handle(AnnotationMethodHandlerAdapter.java:424) 
at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:790) 
at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:719) 
at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:669) 
at org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:585) 
at javax.servlet.http.HttpServlet.service(HttpServlet.java:641) 
at javax.servlet.http.HttpServlet.service(HttpServlet.java:722) 
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:304) 
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210) 
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:224) 
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:175) 
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:472) 
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:164) 
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:100) 
at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:929) 
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118) 
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:405) 
at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:279) 
at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:515) 
at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:300) 
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1110) 
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:603) 
at java.lang.Thread.run(Thread.java:722)

我的JSP代碼：

<body> 
    <h1>Please upload a file</h1> 
    <form method="post" action="upload.action" enctype="multipart/form-data"> 
     <input type="text" name="name"/></br> 
     <input type="file" name="file"/></br> 
     <input type="submit"/> 
    </form> 
</body>

和我的servlet-context.xml的代碼是：

<bean id="multipartResolver" class="org.springframework.web.multipart.commons.CommonsMultipartResolver"> 
    <!-- one of the properties available; the maximum file size in bytes --> 
</bean> 

<bean id="fileUploadController" class="com.mpm.common.controller.FileUploadController" ></bean>

來源

2012-06-13 Mayur

你可以從你的FileUploadController中添加相關的部分嗎？ – hcg

@hcg我在想同樣的事情，但後來在'create'上失敗了，所以看起來像配置錯了，看起來似乎不對。 – maksimov

你似乎使用彈簧。在這種情況下，我通常管理多要求是這樣的：

@RequestMapping("/url") 
public String method(HttpServletRequest request) { 
    MultipartHttpServletRequest multipartRequest = (MultipartHttpServletRequest) request; 
    // do stuff with multipartRequest 
    return "/jsp"; 
}

您只需投下您HttpServletRequest的請求。

來源

2012-06-13 08:47:29 sp00m

謝謝現在它正在工作... – Mayur

public void upload(HttpServletRequest request) { 

    File up = new File("C:\\temp"); // path where u need to upload 

    // Create object of MultipartRequest to upload file 
    MultipartRequest m; 
    try { 
     m = new MultipartRequest(request, up.toString()); 

     Enumeration files = m.getFileNames(); 

     // Get the files to be uploaded from enumeration 
     while (files.hasMoreElements()) { 
      String upload = (String) files.nextElement(); 
      filename = m.getFilesystemName(upload); 
      // out.println("<br/><br/><br/><br/>"); 
     } 
    } catch (IOException e) { 
     System.out.println("Error in Uploading files..."); 
    } 
     xsdName = filename.substring(0, filename.lastIndexOf('.')); 
}

這是我的代碼在servlet中做同樣的事情。希望能幫助到你。

來源

2012-06-13 08:48:15

多部分Http請求

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