file upload issue in springs and struts 2.3 integrated app

Question

I am facing an issue with multipart file upload functionality in my spring application. I am using struts2.3 tags in few other jsp files in my application. Upload functionlity was working fine before I migrated struts from 1.2 to 2.3 in my spring app.

code snippet in my upload jsp file:

<td nowrap="nowrap">
                <input type="file" name="file" class="formElement" size="40"/>&nbsp;
                <input name="actionAdd" type="button" class="button" value="Add File to Table" onclick="addFileToTable();"/>
                <div id="noFileSelected" style="display:none"><p><span class="error">No File selected.</span> </p></div>
            </td>

code block in Implementation class:

multiPartRequest = (MultipartHttpServletRequest) request;
MultipartFile multipartFile = multiPartRequest.getFile("file");

code in spring config file

<bean id="multipartResolver"
    class="org.springframework.web.multipart.commons.CommonsMultipartResolver">
    <property name="maxUploadSize" value="500000"/>
</bean>

multiPartRequest.getFile("file") returning null.

the same code block was working fine before.

nansjames · Answer 1 · 2014-12-01T14:03:22.913

0

Try getting direclty from file object do not use multipart request to get the file.

private List<File> file; // if you want to select multiple files
private String fileFileName;
private String fileContentType;

    for (File file : file){

        System.out.print("\nFile ["+i+"] ");
                      System.out.print("title:"+imgTitle);
                      System.out.print("; name:"         + fileFileName.get(i));
                      System.out.print("; contentType: " + fileContentType.get(i));
                      System.out.print("; length: "      + file.length());
    }

edited Dec 01 '14 at 14:03

answered Dec 01 '14 at 13:51

nansjames

35
1
8

If you use a List for File object, you should use a List for the fileNames and contentTypes too. Also, since your code is identical to [the one in this question](http://stackoverflow.com/a/17212916/1654265), you could have provided a reference to the original post. Finally, it is not clear what imgTitle is, since it's not defined anywhere – Andrea Ligios Dec 01 '14 at 17:43

score 0 · Accepted Answer · edited May 23 '17 at 10:33

I guess you have Struts2 with Spring-plugin + Spring libraries (and not Spring MVC, that is an alternative to Struts2); then why using Spring to upload files, when Struts2 is even better, and with no code to write, in doing it ?

JSP

<input type="file" name="file" class="formElement" size="40"/>

Action

private File file;
private String fileFileName;
private String fileContentType;

/* Getters and Setters */

Ensure to have the FileUpload Interceptor in your stack (if you haven't touched anything, you have it), that's it. Fully automatic.

It also works perfectly with multiple files.

file upload issue in springs and struts 2.3 integrated app

2 Answers2