Struts 2 File Upload & Save Example With Explanation
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Struts 2 File Upload & Save Example
Let us see how to work with file uploads in struts 2 frame work, things to remember while working with this type of application
- See in
index.jsp
i have taken <
s:file name=”uploadFile”
i mean my file tag name is uploadFile
- We used to write
setters
,
getters
for this property in
Action
class right, but while writing we need to write setters, getters for 2 more properties with names uploadFileFileName & uploadFileContentType
- I mean name format must be
[
our file property name
]
ContentType &
[
our file property nam
e
]
FileName
- Actually at run time struts 2
container
will injects the required file details into these properties, and thing is see
struts.xml
– line
23
fileUpload
is the
predefined
interceptor class, this will take cares every thing
- Once file uploaded, struts 2 will stores the file with some temp name, its our responsibility to convert and save that file, see line numbers 39,40,41,42 in
Action
class of LogingEx.java
File Upload E
xample
required files….
- index.jsp
- success.jsp
- web.xml
- struts.xml
- LogingEx.java
Directory Structure
index.jsp
<%@ taglib prefix="s" uri="/struts-tags" %> <html> <head> <s:head /> </head> <s:actionerror /> <s:form action="uploadAction" method="POST" enctype="multipart/form-data"> <s:file name="uploadFile" label="Choose File" size="40" /> <s:submit value="Upload" name="submit" /> </s:form>
success.jsp
<%@ taglib prefix="s" uri="/struts-tags" %> <html> File uploaded successfully...!!! File Name : <s:property value="uploadFileFileName"/> <br> Content Type : <s:property value="uploadFileContentType"/> <br> Temp File Name : <s:property value="uploadFile"/>
LogingEx.java
package java4s;
import java.io.File;
import org.apache.commons.io.FileUtils;
import com.opensymphony.xwork2.ActionSupport;
public class LogingEx extends ActionSupport{
private static final long serialVersionUID = 1L;
private File uploadFile;
private String uploadFileContentType;
private String uploadFileFileName;
public File getUploadFile() {
return uploadFile;
}
public void setUploadFile(File uploadFile) {
this.uploadFile = uploadFile;
}
public String getUploadFileContentType() {
return uploadFileContentType;
}
public void setUploadFileContentType(String uploadFileContentType) {
this.uploadFileContentType = uploadFileContentType;
}
public String getUploadFileFileName() {
return uploadFileFileName;
}
public void setUploadFileFileName(String uploadFileFileName) {
this.uploadFileFileName = uploadFileFileName;
}
public String execute()
{
try{
String filePath = "c:/Myuploads"; // Path where uploaded file will be stored
System.out.println("Server path:" + filePath); // check your path in console
File fileToCreate = new File(filePath, uploadFileFileName);// Create file name same as original
FileUtils.copyFile(uploadFile, fileToCreate); // Just copy temp file content tos this file
}catch(Exception e)
{
e.printStackTrace();
addActionError(e.getMessage());
return INPUT;
}
return SUCCESS;
}
}
// Context pirnt.....
//private HttpServletRequest servletRequest;
//String filePath = servletRequest.getSession().getServletContext().getRealPath("/");
//System.out.println("Server path:" + filePath);
//File fileN = new File(filePath, this.uploadFileFileName);
//FileUtils.copyFile(this.userImage, fileToCreate);
web.xml
<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://java.sun.com/xml/ns/javaee" xmlns:web="http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" id="WebApp_ID" version="2.5">
<filter>
<filter-name>struts2</filter-name>
<filter-class>org.apache.struts2.dispatcher.FilterDispatcher</filter-class>
</filter>
<filter-mapping>
<filter-name>struts2</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
<welcome-file-list>
<welcome-file>index.jsp</welcome-file>
</welcome-file-list>
</web-app>
struts.xml
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE struts PUBLIC
"-//Apache Software Foundation//DTD Struts Configuration 2.0//EN"
"http://struts.apache.org/dtds/struts-2.0.dtd">
<struts>
<include file="struts-default.xml"/>
<package name="a" extends="struts-default">
<action name="uploadAction" class="java4s.LogingEx">
<interceptor-ref name="exception" />
<interceptor-ref name="alias" />
<interceptor-ref name="servletConfig" />
<interceptor-ref name="prepare" />
<interceptor-ref name="i18n" />
<interceptor-ref name="chain" />
<interceptor-ref name="debugging" />
<interceptor-ref name="profiling" />
<interceptor-ref name="scopedModelDriven" />
<interceptor-ref name="modelDriven" />
<interceptor-ref name="fileUpload">
<param name="maximumSize">10240</param>
<param name="allowedTypes">text/plain</param>
</interceptor-ref>
<interceptor-ref name="checkbox" />
<interceptor-ref name="staticParams" />
<interceptor-ref name="actionMappingParams" />
<interceptor-ref name="params">
<param name="excludeParams"> dojo\..*,^struts\..*</param>
</interceptor-ref>
<interceptor-ref name="conversionError" />
<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="success">/success.jsp</result>
<result name="input">/index.jsp</result>
</action>
</package>
</struts>
Output
Output If if we take wrong file
Output If file accepted
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::. About the Author .::
Sivateja Kandula – Java/J2EE Full Stack Developer
Founder of Java4s – Get It Yourself, A popular Java/J2EE Programming Blog, Love Java and UI frameworks.
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Founder of Java4s – Get It Yourself, A popular Java/J2EE Programming Blog, Love Java and UI frameworks.You can sign-up for thefor your daily dose of Java tutorials.
