How to submit multipart/form-data with File and Text Fields using Struts2?

Question

This registration form contains a file upload and textfields. Using Struts2 how do we submit the form parameters and also upload the file?

1. register.jsp:

<s:form action = "Register" enctype="multipart/form-data" method="post">
    <s:textfield name="uname" label = "User Name"/>  
    <s:password name ="password" label = "Password"/>
    <s:file name="fileUpload" label="Select a File to upload" size="40" />
    <s:submit/> 
</s:form>

2. RegisterAction:

package user.action;

import java.io.File;

public class RegisterAction 
{
    private String uname,password;
    private File fileUpload;
    private String fileUploadContentType;
    private String fileUploadFileName;

    //getter setters

    public String execute() throws Exception
    {
        return "success";
    }
}

3. struts.xml:

</action>
<action name="Register" class="user.action.RegisterAction">
    <interceptor-ref name="fileUpload">
        <param name="allowedTypes">text/plain</param>
        <param name="maximumSize">10240</param>
    </interceptor-ref> 
    <result name="success">registered.jsp</result>
</action>

4. registered.jsp:

User Name    : <s:property value="uname"/>
File Name    : <s:property value="fileUploadFileName"/> 
Content Type : <s:property value="fileUploadContentType"/> 
File         : <s:property value="fileUpload"/>

User Name <s:property value="uname"/> is not giving any output in registered.jsp. Should we use Apache file upload to parse the request to get the textfields value?

Roman C · Accepted Answer · 2014-12-08 10:38:43Z

1

No, you shouldn't. The Apache file upload is part of Struts2. The fileUpload interceptor is already included to the defaultStack, so you don't need to reference it in the action configuration. If you want to override parameters of this interceptor then

<action name="Register" class="user.action.RegisterAction">
    <interceptor-ref name="defaultStack">
        <param name="fileUpload.allowedTypes">text/plain</param>
        <param name="fileUpload.maximumSize">10240</param>
    </interceptor-ref> 
    <result name="success">registered.jsp</result>
</action>

As long as the required libraries are added to your project you will be able to take advantage of of the Struts 2 fileUpload capability.

edited Dec 8, 2014 at 10:38

answered Dec 8, 2014 at 10:27

Roman C

1

Sign up to request clarification or add additional context in comments.

Comments

Govinda Sakhare · Accepted Answer · 2014-12-08 08:23:18Z

0

check you setter methods local variable and in registered.jsp try this change

User Name <s:property value="uname"/>

with

<s:label name="xyz" value="%{uname}" />

answered Dec 8, 2014 at 8:23

Govinda Sakhare

5,8606 gold badges41 silver badges86 bronze badges

Comments

Chinmay Patel · Accepted Answer · 2014-12-08 12:12:09Z

Thanks Friends for looking into the problem. I have got the answer. Actually I had done a mistake while adding the interceptor. I had missed

<interceptor-ref name="defaultStack"></interceptor-ref>

so my new action after change should be

  <action name="Register" class="user.action.RegisterAction">
        <interceptor-ref name="fileUpload">
            <param name="allowedTypes">text/plain</param>
            <param name="maximumSize">10240</param>
        </interceptor-ref> 
        <interceptor-ref name="defaultStack"></interceptor-ref>
        <result name="success">registered.jsp</result>
    </action>

Mr Roman is correct that we should add the file upload interceptor only if we need to override. If we don't still it will upload.

Collectives™ on Stack Overflow

How to submit multipart/form-data with File and Text Fields using Struts2?

3 Answers 3

Comments

Comments

Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

3 Answers 3

Comments

Comments

Comments

Your Answer

Sign up or log in

Post as a guest

Related