Uploading file example in liferay

1. in service.xml

Open service.xml:

write the following code.

<?xml version="1.0" encoding="UTF-8"?>

<!DOCTYPE service-builder PUBLIC "-//Liferay//DTD Service Builder 6.0.0//EN" "http://www.liferay.com/dtd/liferay-service-builder_6_0_0.dtd">

<service-builder package-path="com.upload.slayer">

      <author>meera</author>

      <namespace>U</namespace>

      <entity name="FileUploader" table="fileuploader" local-service="true">

 <column name="fid" type="long" primary="true"/>

    <column name="content" type="String"/>

 </entity>

</service-builder>

2. Now do Ant-build service for the portlet you created.

3. portlet-model-hints.xml (ctrl+shift+r)

a) Open portlet-model-hints.xml and you will see a code like this
<model-hints>
 <model name="com.sample.model.FileUploader">
  <field name="fid" type="long" />
  <field name="content" type="String" />
 </model>
<model-hints>

b) Now update the above code with this below code:

<?xml version="1.0" encoding="UTF-8"?>

<model-hints>

      <model name="com.sample.model.FileUploader">

            <field name="fid" type="long" />

            <field name="content" type="String">

                  <hint-collection name="CLOBTYPE" />

            </field>

      </model>

      <hint-collection name="CLOBTYPE">

            <hint name="max-length">2000000</hint>

      </hint-collection>

      <model name="com.upload.slayer.model.FileUploader">

            <field name="fid" type="long" />

            <field name="content" type="String" />

      </model>

</model-hints>

View.jsp

4. Now open view.jsp an add following code to insert file

<portlet:actionURL name="addStack" var="actionFoo"></portlet:actionURL>

<form action="<%=actionFoo.toString()%>" method="post" enctype="multipart/form-data">

 <input type="file" name="file"/>

 <input type="submit" value="Submit" />

</form>

5. Now deploy it and you will see the file and the submit button in your page.

FileUploaderLocalServiceImpl.java

6. Open FileUploaderLocalServiceImpl.java and add following code

package com.upload.slayer.service.impl;

import java.io.File;

import java.io.IOException;

import com.liferay.counter.service.CounterLocalServiceUtil;

import com.liferay.portal.kernel.util.Base64;

import com.liferay.portal.kernel.util.FileUtil;

import com.upload.slayer.model.FileUploader;

import com.upload.slayer.service.base.FileUploaderLocalServiceBaseImpl;

public class FileUploaderLocalServiceImpl

      extends FileUploaderLocalServiceBaseImpl {

      public void add(File file)

       {

        byte[] bt;

        long fid=0L;

        try {

         fid=CounterLocalServiceUtil.increment();

         FileUploader f = fileUploaderLocalService.createFileUploader(fid);

         bt = FileUtil.getBytes(file);

         System.out.println(bt);

         f.setContent(Base64.objectToString(bt));

         fileUploaderPersistence.update(f, false);

        } catch (Exception e) {

         // TODO Auto-generated catch block

         e.printStackTrace();

        }

}

}

In contoller.java

7. Open controller.java action class and write down logic as shown below:

package com.upload;

import java.io.File;

import javax.portlet.ActionRequest;

import javax.portlet.ActionResponse;

import com.liferay.portal.kernel.upload.UploadPortletRequest;

import com.liferay.portal.util.PortalUtil;

import com.liferay.util.bridges.mvc.MVCPortlet;

import com.upload.slayer.service.FileUploaderLocalServiceUtil;

public class UploadPortlet extends MVCPortlet {

      public void addStack(ActionRequest arq,ActionResponse ars)

      {

UploadPortletRequest            ureq=PortalUtil.getUploadPortletRequest(arq);

       File file=(File) ureq.getFile("file");

       System.out.println("sddgvwsg"+((java.io.File) file).getName());

       FileUploaderLocalServiceUtil.add((java.io.File) file);

      }

}