CODEWITHSUNDEEP
javajspfile-uploadstruts2multipartform-data
Chinmay Patel
Chinmay Patel

Reputation: 430

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

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?

Upvotes: 2

Views: 4264

Answers (3)

Chinmay Patel
Chinmay Patel

Reputation: 430

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.

Upvotes: 0

Roman C
Roman C

Reputation: 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.

Upvotes: 1

Govinda Sakhare
Govinda Sakhare

Reputation: 5749

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}" />

Upvotes: 0

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