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2013-10-16T06:00:15.867
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2013-10-16T06:17:46.043
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<p>Here is step by step configuration for file uploading by using Apache Commons FileUpload:</p> <p><strong>1. Add dependency jars for the following component. Here is the maven dependencies:</strong><br/></p> <p>pom.xml</p> <pre><code> <dependencies>  <dependency> <groupId>org.springframework</groupId> <artifactId>spring-webmvc</artifactId> <version>3.2.4.RELEASE</version> </dependency>  <dependency> <groupId>commons-fileupload</groupId> <artifactId>commons-fileupload</artifactId> <version>1.2.2</version> </dependency>  <dependency> <groupId>org.apache.commons</groupId> <artifactId>commons-io</artifactId> <version>1.3.2</version> </dependency>  <dependency> <groupId>jstl</groupId> <artifactId>jstl</artifactId> <version>1.2</version> </dependency> </dependencies> </code></pre> <p>If you are not using maven then download respective jar from the maven repository online.</p> <p><strong>2. Create a FileUploadForm model</strong><br/></p> <p>FileUploadForm.java</p> <pre><code>import java.util.List; import org.springframework.web.multipart.MultipartFile; public class FileUploadForm { private List<MultipartFile> files; //Getter and setter methods } </code></pre> <p><strong>3. Add resolver to MVC config file</strong></p> <pre><code><bean id="multipartResolver" class="org.springframework.web.multipart.commons.CommonsMultipartResolver">  <property name="maxUploadSize" value="100000"/> </bean> </code></pre> <p><strong>4. Write FileUploadController</strong><br/></p> <p>FileUploadController.java</p> <pre><code>@Controller public class FileUploadController { @RequestMapping(value = "/show", method = RequestMethod.GET) public String displayForm() { return "file_upload_form"; } @RequestMapping(value = "/save", method = RequestMethod.POST) public String save( @ModelAttribute("uploadForm") FileUploadForm uploadForm, Model map) { List<MultipartFile> files = uploadForm.getFiles(); List<String> fileNames = new ArrayList<String>(); if(null != files && files.size() > 0) { for (MultipartFile multipartFile : files) { String fileName = multipartFile.getOriginalFilename(); fileNames.add(fileName); //Handle file content - multipartFile.getInputStream() } } map.addAttribute("files", fileNames); return "file_upload_success"; } } </code></pre> <p><strong>5. Write jsp views <br/></strong></p> <p>file_upload_form.jsp</p> <pre><code><html> <head> <title>Spring MVC Multiple File Upload</title> <script src="http://ajax.googleapis.com/ajax/libs/jquery/1.8.2/jquery.min.js"></script> <script> $(document).ready(function() { //add more file components if Add is clicked $('#addFile').click(function() { var fileIndex = $('#fileTable tr').children().length - 1; $('#fileTable').append( '<tr><td>'+ ' <input type="file" name="files['+ fileIndex +']" />'+ '</td></tr>'); }); }); </script> </head> <body> <h1>Spring Multiple File Upload example</h1> <form method="post" action="save.html" **enctype="multipart/form-data"**> <p>Select files to upload. Press Add button to add more file inputs.</p> <input id="addFile" type="button" value="Add File" /> <table id="fileTable"> <tr> <td><input name="files[0]" type="file" /></td> </tr> <tr> <td><input name="files[1]" type="file" /></td> </tr> </table> <br/><input type="submit" value="Upload" /> </form> </body> </html> </code></pre> <p>Reference: <a href="http://docs.spring.io/spring/docs/3.2.4.RELEASE/spring-framework-reference/html/mvc.html#mvc-multipart" rel="nofollow">http://docs.spring.io/spring/docs/3.2.4.RELEASE/spring-framework-reference/html/mvc.html#mvc-multipart</a></p>
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1. POFile Image to Servlet Fails
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1. USPrakash Bhagat
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1. USPrakash Bhagat
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1. COI appreciate the long response, but file upload works fine through the ui. it's just that sometimes, during automated testing, that the image upload fails.
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  USJason
2. CONot really inherent... but +1 for the effort.
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  USAndrea Ligios

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