Expects requests to be made using the multipart/form-data MIME type.InPutStream в€’ The InputStream is used to read data from a source.OutPutStream в€’ The OutputStream is used for writing data to a destination.Java provides strong but flexible support for I/O related to files and networks but this tutorial covers very basic functionality related to streams and I/O. We will see the most commonly used examples one by one в€’ Byte StreamsJava byte streams are used to perform input and output of 8-bit bytes. Though there are many classes related to byte streams but the most frequently used classes are, FileInputStream and FileOutputStream.

Go to the directory where you unzipped the file i.e. Make sure you have latest version of Gradle installed and PATH is configured. 1 package com.firstfewlines 2 import static spark.Spark.* 3 4 import spark.utils.IOUtils 5 6 import javax.servlet.MultipartConfigElement 7 import javax.servlet.http.Part 8 import java.io.FileOutputStream 9 import java.io.InputStream 10 import java.io.OutputStream 11 12 public class SparkJavaFileUploadSample In this example you simply create a file Upload application using ajax just follows by these points: Create a simple HTML form for file upload. Set the target to an iFrame which is on the actual page but not visible.A stream can be defined as a sequence of data.

9 INFO spark.embeddedserver.jetty.EmbeddedJettyServer - > Listening on 0.0.0.0:456710 INFO org.eclipse.jetty.server.Server - jetty-9.4.4.v2017041411 INFO org.eclipse.jetty.server.session - DefaultSessionIdManager workerName=node012 INFO org.eclipse.jetty.server.session - No SessionScavenger set, using defaults13 INFO org.eclipse.jetty.server.session - Scavenging every 600000ms14 INFO org.eclipse.jetty.server.AbstractConnector - Started INFO org.eclipse.jetty.server. Now open your browser and point to Alternatively, you can use IntelliJ IDEa or Eclipse to import the Gradle project and1Starting a Gradle Daemon (subsequent builds will be faster)6 INFO spark.staticfiles.StaticFilesConfiguration - StaticResourceHandler configured with folder = /public7 INFO org.eclipse.jetty.util.log - Logging initialized to org.eclipse.jetty.util.log.Slf4jLog8 INFO spark.embeddedserver.jetty.EmbeddedJettyServer - = Spark has ignited. This should run the application with output similar to below

Java File Upload Example