Quarkus File Upload Example

This article shows you how to upload multiple files in the Quarkus application. 


 More Quarkus Related topics,

Technologies used:

  • Quarkus 2.2.3.Final
  • rest-easy-multipart 2.2.3:Final
  • Java 11
  • Maven 3
  • H2DB

Project Structure:




Maven dependencies(pom.xml)
<?xml version="1.0"?>
<project xsi:schemaLocation="http://maven.apache.org/POM/4.0.0
https://maven.apache.org/xsd/maven-4.0.0.xsd"
xmlns="http://maven.apache.org/POM/4.0.0"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<modelVersion>4.0.0</modelVersion>
<groupId>com.knf.dev.demo</groupId>
<artifactId>quarkus-upload-file</artifactId>
<version>1.0.0-SNAPSHOT</version>
<properties>
<compiler-plugin.version>3.8.1</compiler-plugin.version>
<maven.compiler.parameters>true</maven.compiler.parameters>
<maven.compiler.source>11</maven.compiler.source>
<maven.compiler.target>11</maven.compiler.target>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
<quarkus.platform.artifact-id>quarkus-bom</quarkus.platform.artifact-id>
<quarkus.platform.group-id>io.quarkus.platform</quarkus.platform.group-id>
<quarkus.platform.version>2.2.3.Final</quarkus.platform.version>
<surefire-plugin.version>3.0.0-M5</surefire-plugin.version>
</properties>
<dependencyManagement>
<dependencies>
<dependency>
<groupId>${quarkus.platform.group-id}</groupId>
<artifactId>${quarkus.platform.artifact-id}</artifactId>
<version>${quarkus.platform.version}</version>
<type>pom</type>
<scope>import</scope>
</dependency>
</dependencies>
</dependencyManagement>
<dependencies>
<!-- Server dependencies -->
<dependency>
<groupId>io.quarkus</groupId>
<artifactId>quarkus-resteasy</artifactId>
</dependency>
<!-- Client dependencies -->
<dependency>
<groupId>io.quarkus</groupId>
<artifactId>quarkus-rest-client</artifactId>
</dependency>
<dependency>
<groupId>io.quarkus</groupId>
<artifactId>quarkus-resteasy-multipart</artifactId>
</dependency>
<!-- Test dependencies -->
<dependency>
<groupId>io.quarkus</groupId>
<artifactId>quarkus-junit5</artifactId>
<scope>test</scope>
</dependency>
<dependency>
<groupId>io.rest-assured</groupId>
<artifactId>rest-assured</artifactId>
<scope>test</scope>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>${quarkus.platform.group-id}</groupId>
<artifactId>quarkus-maven-plugin</artifactId>
<version>${quarkus.platform.version}</version>
<extensions>true</extensions>
<executions>
<execution>
<goals>
<goal>build</goal>
<goal>generate-code</goal>
<goal>generate-code-tests</goal>
</goals>
</execution>
</executions>
</plugin>
<plugin>
<artifactId>maven-compiler-plugin</artifactId>
<version>${compiler-plugin.version}</version>
<configuration>
<parameters>
${maven.compiler.parameters}
</parameters>
</configuration>
</plugin>
<plugin>
<artifactId>maven-surefire-plugin</artifactId>
<version>${surefire-plugin.version}</version>
<configuration>
<systemPropertyVariables>
<java.util.logging.manager>
org.jboss.logmanager.LogManager
</java.util.logging.manager>
<maven.home>${maven.home}</maven.home>
</systemPropertyVariables>
</configuration>
</plugin>
</plugins>
</build>
<profiles>
<profile>
<id>native</id>
<activation>
<property>
<name>native</name>
</property>
</activation>
<build>
<plugins>
<plugin>
<artifactId>maven-failsafe-plugin</artifactId>
<version>${surefire-plugin.version}</version>
<executions>
<execution>
<goals>
<goal>integration-test</goal>
<goal>verify</goal>
</goals>
<configuration>
<systemPropertyVariables>
<native.image.path>
${project.build.directory}/${project.build.finalName}-runner
</native.image.path>
<java.util.logging.manager>
org.jboss.logmanager.LogManager
</java.util.logging.manager>
<maven.home>
${maven.home}
</maven.home>
</systemPropertyVariables>
</configuration>
</execution>
</executions>
</plugin>
</plugins>
</build>
<properties>
<quarkus.package.type>
native
</quarkus.package.type>
</properties>
</profile>
</profiles>
</project>


FileUploadService
package com.knf.dev.demo;

import org.apache.commons.io.IOUtils;
import org.eclipse.microprofile.config.inject.ConfigProperty;
import org.jboss.resteasy.plugins.providers.multipart.InputPart;
import org.jboss.resteasy.plugins.providers.multipart.MultipartFormDataInput;
import javax.inject.Singleton;
import javax.ws.rs.core.MultivaluedMap;
import java.io.File;
import java.io.IOException;
import java.io.InputStream;
import java.nio.file.Files;
import java.nio.file.Paths;
import java.nio.file.StandardOpenOption;
import java.util.ArrayList;
import java.util.List;
import java.util.Map;

@Singleton
public class FileUploadService {

@ConfigProperty(name = "upload.directory")
String UPLOAD_DIR;

public String uploadFile(MultipartFormDataInput input) {
Map<String, List<InputPart>> uploadForm = input.getFormDataMap();
List<String> fileNames = new ArrayList<>();
List<InputPart> inputParts = uploadForm.get("file");
String fileName = null;
for (InputPart inputPart : inputParts) {
try {
MultivaluedMap<String, String> header =
inputPart.getHeaders();
fileName = getFileName(header);
fileNames.add(fileName);
InputStream inputStream = inputPart.getBody(InputStream.class, null);
writeFile(inputStream,fileName);
} catch (Exception e) {
e.printStackTrace();
}
}
return "Files Successfully Uploaded";
}

private void writeFile(InputStream inputStream,String fileName)
throws IOException {
byte[] bytes = IOUtils.toByteArray(inputStream);
File customDir = new File(UPLOAD_DIR);
fileName = customDir.getAbsolutePath() +
File.separator + fileName;
Files.write(Paths.get(fileName), bytes,
StandardOpenOption.CREATE_NEW);
}

private String getFileName(MultivaluedMap<String, String> header) {
String[] contentDisposition = header.
getFirst("Content-Disposition").split(";");
for (String filename : contentDisposition) {
if ((filename.trim().startsWith("filename"))) {
String[] name = filename.split("=");
String finalFileName = name[1].trim().replaceAll("\"", "");
return finalFileName;
}
}
return "";
}
}


MultiFileUploadController
package com.knf.dev.demo;

import org.jboss.resteasy.annotations.providers.multipart.MultipartForm;
import org.jboss.resteasy.plugins.providers.multipart.MultipartFormDataInput;
import javax.inject.Inject;
import javax.ws.rs.Consumes;
import javax.ws.rs.POST;
import javax.ws.rs.Path;
import javax.ws.rs.Produces;
import javax.ws.rs.core.MediaType;
import javax.ws.rs.core.Response;

@Path("/upload")
public class MultiFileUploadController {

@Inject
FileUploadService fileUploadService;

@POST
@Path("/files")
@Consumes(MediaType.MULTIPART_FORM_DATA)
@Produces(MediaType.TEXT_PLAIN)
public Response fileUpload(@MultipartForm MultipartFormDataInput
input) {
return Response.ok().
entity(fileUploadService.uploadFile(input)).build();
}
}


application.properties
upload.directory= /home/user/Pictures/files


Run

Build application jar file: mvn clean package


Start application: java -jar quarkus-run.jar

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