Uploading files in Struts
Struts has default interceptor (in-build interceptor) for uploading files, however not that these files will get stored in temporary directory they should be processed and stored in permanent location. (Refer: Default Interceptors in Struts)
Lets see an example of uploading an image using Struts,
Directory Structure
We have created 2 jsp files, one dao.java for this example.
upload.jsp
<%@page contentType="text/html" pageEncoding="UTF-8"%>
<%@ taglib prefix="s" uri="/struts-tags"%>
<!DOCTYPE html>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>Uploading Image</title>
</head>
<body>
<s:form action="userImage" method="post" enctype="multipart/form-data">
<s:file name="userImage" label="Image" />
<s:submit value="Upload" align="center" />
</s:form>
</body>
</html>
success.jsp
<%@page contentType="text/html" pageEncoding="UTF-8"%>
<!DOCTYPE html>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>Image show</title>
</head>
<body>
Uploaded Successfully!
</body>
</html>
dao.java
package Dao;
import com.opensymphony.xwork2.ActionSupport;
import java.io.File;
import javax.servlet.http.HttpServletRequest;
import org.apache.commons.io.FileUtils;
import org.apache.struts2.interceptor.ServletRequestAware;
public class dao extends ActionSupport implements ServletRequestAware {
File imageupload;
HttpServletRequest servletRequest;
String filename;
public String getFilename() {
return filename;
}
public void setFilename(String filename) {
this.filename = filename;
}
public HttpServletRequest getServletRequest() {
return servletRequest;
}
public void setServletRequest(HttpServletRequest servletRequest) {
this.servletRequest = servletRequest;
}
public File getImageupload() {
return imageupload;
}
public void setImageupload(File imageupload) {
this.imageupload = imageupload;
}
public String execute()
{
try
{
String path=servletRequest.getSession().getServletContext().getRealPath("/").concat("images");
System.out.println(path);
File create = new File(path, this.filename);
FileUtils.copyFile(this.imageupload, create);
}
catch(Exception e)
{
}
return "success";
}
}
struts.xml
<struts>
<package name="default" extends="struts-default">
<action name="userImage" class="Dao.dao">
<interceptor-ref name="fileUpload">
<param name="maximumSize">2000000</param>
<param name="allowedTypes">
image/png,image/gif,image/jpeg,image/pjpeg
</param>
</interceptor-ref>
<interceptor-ref name="defaultStack"></interceptor-ref>
<result name="success">success.jsp</result>
<result name="input">upload.jsp</result>
</action>
</package>
</struts>
Output:
Uploaded Successfully!
Now check server.log to know the location where the image got saved,
Image Location: E:\NetBeans\Struts2FUL\build\web\images
