Question

I am trying to upload Excel only file in Struts2 WEB Application. So using the following Code in Jsp page:

<s:label value="File Name : *" />
<s:file name="fileUpload" label="Select a File to upload"/>
<br>

<br>
<s:submit value="Add" name="add" tabindex="8" /> 



    </s:form>

In Response.jsp page displaying the File content and It’s type as Follows:

   <s:form  action="saveBulkStores.action" method="get" >

<h4>
   File Name : <s:property value="fileUploadFileName"/> 
</h4> 

<h4>
   Content Type : <s:property value="fileUploadContentType"/> 
</h4> 

<h4>
   File : <s:property value="fileUpload"/> 
</h4> 

<br>
    </s:form>

In Struts.xml:

            <action name="bulkStores" class="com.action.FilesUploadAction"
        method="loadBulkStoresPage"> 
        <result name="input">/viewfile.jsp</result>
        <result name="success">/uploadfile.jsp</result> 
    </action> 

            <action name="saveBulkStores" class="com.action.FilesUploadAction"
        method="saveBulkStores"> 
        <interceptor-ref name="exception"/>
        <interceptor-ref name="i18n"/>
        <interceptor-ref name="fileUpload">
            <param name="allowedTypes">text/plain</param>
            <param name="maximumSize">10240</param>
         </interceptor-ref> 
        <interceptor-ref name="params">
            <param name="excludeParams">dojo\..*,^struts\..*</param>
        </interceptor-ref>
        <interceptor-ref name="validation">
            <param name="excludeMethods">input,back,cancel,browse</param>
        </interceptor-ref>
        <interceptor-ref name="workflow">
            <param name="excludeMethods">input,back,cancel,browse</param>
        </interceptor-ref> 
        <result name="input">/uploadfile.jsp</result>
        <result name="success">/success.jsp</result> 
    </action>

In Action Classes:

         public String loadBulkStoresPage(){
    System.out.println("FILES BULK UPLOADS.........");
    return SUCCESS;
     }
         private File fileUpload;
     private String fileUploadContentType; 
     private String fileUploadFileName;
         //Getters and Setters for above Fields.

Displaying filename,content type as follows:

         public String saveBulkStores(){
    System.out.println("check Bulk upload file");

    System.out.println("fileName:"+fileUploadFileName);
    System.out.println("content type:"+fileUploadContentType);
    System.out.println("fileupload:"+fileUpload); 

    return SUCCESS;
     }

Output:

   It's displaying NUll value only for my display statements. So anyone help me to fix this issue. thanks in Advance. 

I am new to do this task.

Answer 1

FileUtils is not part of the standard JDK, it a class in the Apache Commons IO library.It contains Methods like

FileUtils.readFileToString(file);
FileUtils.copyDirectoryToDirectory(source, destination);
FileUtils.deleteDirectory(source);......................which make copying files from one directory to other directory in most easier way in word it reduces voluminous amount of code as entire code is written by Apache people
please refer this URL for reference http://www.koders.com/java/fid002DB6BD79CABA7B6AA0F2669061424E3B9776D3.aspx