File upload with Jersey using POSTMAN extension : FormDataContentDisposition is NULL - web-services

Question

I am getting FormDataContentDisposition object as NULL while implementing jersey file upload example as mentioned in below URL :
http://www.mkyong.com/webservices/jax-rs/file-upload-example-in-jersey/
Here is my sample code,
IMPORTS
import java.io.InputStream;
import javax.ws.rs.Consumes;
import javax.ws.rs.GET;
import javax.ws.rs.POST;
import javax.ws.rs.Path;
import javax.ws.rs.PathParam;
import javax.ws.rs.Produces;
import javax.ws.rs.core.Context;
import javax.ws.rs.core.MediaType;
import javax.ws.rs.core.Response;
import com.sun.jersey.core.header.FormDataContentDisposition;
import com.sun.jersey.multipart.FormDataParam;
Rest API code,
#POST
#Path("/uploadFiles")
#Produces({ MediaType.APPLICATION_JSON})
#Consumes({ MediaType.MULTIPART_FORM_DATA })
public Response uploadFiles(#FormDataParam("file") InputStream uploadedInputStream,
#FormDataParam("file") FormDataContentDisposition fileDetail)
throws IOException{
I am getting fileDetail object null in above code.
JAR versions used,
<dependency>
<groupId>com.sun.jersey</groupId>
<artifactId>jersey-core</artifactId>
<version>1.11</version>
</dependency>
<dependency>
<groupId>com.sun.jersey.contribs</groupId>
<artifactId>jersey-multipart</artifactId>
<version>1.19</version>
</dependency>
I am hitting my request from Chrome POSTMAN Client,
Here is the snapshot of my request from POSTMAN client...
I already gone through the link : File upload with Jersey : FormDataContentDisposition is null having same problem but the difference is that I am using REST Client instead of HTML/JSP to submit my request.
Can any one please help me to know why I am getting NULL object of FormDataContentDisposition,
Thanks in advance!
Edit:
I found the difference between example and my application implementation is that they have below configuration in web.xml
<servlet>
<servlet-name>jersey-serlvet</servlet-name>
<servlet-class>com.sun.jersey.spi.container.servlet.ServletContainer</servlet-class>
<init-param>
<param-name>com.sun.jersey.config.property.packages</param-name>
<param-value>com.mkyong.rest</param-value>
</init-param>
<load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>jersey-serlvet</servlet-name>
<url-pattern>/rest/*</url-pattern>
</servlet-mapping>
and My Application configuration is,
#javax.ws.rs.ApplicationPath("/rest")
#javax.ws.rs.Path("application")
public class RestServices extends Application {
#Override
public Set<Class<?>> getClasses() {
HashSet<Class<?>> classes = new HashSet<Class<?>>();
classes.add(this.getClass());
classes.add(RestAPI.class);
return classes;
}
Can anybody tell me what is the exact difference between these two
configurations. Can Above both implementation will changes the way
things working?

Answer 1

Remove #javax.ws.rs.Path("application").
You don't need two kinds of Deployment Descriptor, use either Programmatic approach or web.xml;
My approach:
empty web.xml
<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns="http://java.sun.com/xml/ns/javaee"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://java.sun.com/xml/ns/javaee
http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd"
version="3.0">
</web-app>
and config class:
#ApplicationPath("/rootpath")
public class YourApplication extends ResourceConfig {
// Constructor
public YourApplication() {
super (
//YOUR JAX-RS Service Classes
MyJaxRSService.class,
// This one corresponds to jersey-media-json-jackson in dependencies
JacksonFeature.class,
// This is one to : jersey-media-multipart
MultiPartFeature.class
);
}
}
update dependencies
<dependency>
<groupId>org.glassfish.jersey.containers</groupId>
<artifactId>jersey-container-servlet</artifactId>
<version>2.22.1</version>
</dependency>
<dependency>
<groupId>org.glassfish.jersey.media</groupId>
<artifactId>jersey-media-json-jackson</artifactId>
<version>2.22.1</version>
</dependency>
<dependency>
<groupId>org.glassfish.jersey.media</groupId>
<artifactId>jersey-media-multipart</artifactId>
<version>2.22.1</version>
</dependency>
Last and most important: forget such tutorials, it helps you start instantly but when you encounter problem you're stuck, and you'll just waste your time. Instead read official documentation and their real world examples, get some real insight into technology how and why it works.
Jersey Documentation: https://jersey.java.net/documentation/latest/index.html
In addition: I'd recommend this book by Bill Burke - RESTful Java with JAX-RS 2.0.
Good luck.

Answer 2

Though I am using Jersey 2.22.1, my web.xml has provided configuration for multipart data.
web.xml
<web-app version="2.5" xmlns="http://java.sun.com/xml/ns/javaee"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd">
<servlet>
<servlet-name>Jersey Web Application</servlet-name>
<servlet-class>org.glassfish.jersey.servlet.ServletContainer</servlet-class>
<init-param>
<param-name>jersey.config.server.provider.packages</param-name>
<param-value>com.xyz.rest.controller;com.xyz.rest.filters</param-value>
</init-param>
<init-param>
<param-name>com.sun.jersey.api.json.POJOMappingFeature</param-name>
<param-value>true</param-value>
</init-param>
<init-param>
<param-name>jersey.config.server.provider.classnames</param-name>
<param-value>org.glassfish.jersey.media.multipart.MultiPartFeature</param-value>
</init-param>
<load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>Jersey Web Application</servlet-name>
<url-pattern>/api/*</url-pattern>
</servlet-mapping>
</web-app>
Reply back if still problem persist