ws

JAX-RS Jersey file upload

Server.java
form.html
multi.form
context.xml
web.xml
pom.xml

Server.java

package com.training;

import com.sun.jersey.core.header.ContentDisposition;
import com.sun.jersey.core.header.FormDataContentDisposition;
import com.sun.jersey.multipart.FormDataBodyPart;
import com.sun.jersey.multipart.FormDataMultiPart;
import com.sun.jersey.multipart.FormDataParam;
import java.io.File;
import java.io.FileOutputStream;
import java.io.InputStream;
import java.io.OutputStream;
import javax.ws.rs.Consumes;
import javax.ws.rs.POST;
import javax.ws.rs.Path;
import javax.ws.rs.core.MediaType;
import javax.ws.rs.core.Response;

@Path("/files")
public class Server {
//http://127.0.0.1:8080/jax_rs_jersey_file_upload_example/form.html
//http://127.0.0.1:8080/jax_rs_jersey_file_upload_example/multi.html

    @POST
    @Path("/upload")
    @Consumes(MediaType.MULTIPART_FORM_DATA)
    public Response uploadFile(
            @FormDataParam("file") InputStream inputStream,
            @FormDataParam("file") FormDataContentDisposition formDataContentDisposition) {
        String fileName = formDataContentDisposition.getFileName();

        String filePath = saveFile(inputStream, fileName);

        String output = "File: " + filePath;

        return Response.status(Response.Status.CREATED).entity(output).build();
    }

    @POST
    @Path("/multi")
    @Consumes(MediaType.MULTIPART_FORM_DATA)
    public Response uploadFile(
            FormDataMultiPart form) {
        FormDataBodyPart filePart = form.getField("file");

        ContentDisposition headerOfFilePart = filePart.getContentDisposition();

        InputStream inputStream = filePart.getValueAs(InputStream.class);

        String filePath = saveFile(inputStream, headerOfFilePart.getFileName());

        String output = "File: " + filePath;

        return Response.status(Response.Status.CREATED).entity(output).build();
    }

    private String saveFile(InputStream inputStream, String fileName) {
        try {
            File file = File.createTempFile("temp", ".txt");
            OutputStream outputStream = new FileOutputStream(file);
            int read = 0;
            byte[] bytes = new byte[1024];

            while ((read = inputStream.read(bytes)) != -1) {
                outputStream.write(bytes, 0, read);
            }
            outputStream.flush();
            outputStream.close();
            return file.getAbsolutePath();
        } catch (Exception e) {

        }
        return "";
    }

}

form.html

<!DOCTYPE html>
<html>
    <head>
        <meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
        <title>Form Page</title>
    </head>
    <body>
        <h1>Upload a File</h1>

        <form action="rest/files/upload" method="post" enctype="multipart/form-data">

            <p>
                Select a file : <input type="file" name="file" size="50" />
            </p>

            <input type="submit" value="Upload It" />
        </form>

    </body>
</html>

multi.form

<!DOCTYPE html>
<html>
    <head>
        <meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
        <title>Form Page</title>
    </head>
    <body>
        <h1>Upload a File</h1>

        <form action="rest/files/multi" method="post" enctype="multipart/form-data">

            <p>
                Select a file : <input type="file" name="file" size="50" />
            </p>

            <input type="submit" value="Upload It" />
        </form>

    </body>
</html>

context.xml

<?xml version="1.0" encoding="UTF-8"?>
<Context antiJARLocking="true" path="/jax_rs_jersey_file_upload_example"/>

web.xml

<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">

    <display-name>JAX-RS Web Application</display-name>

    <servlet>
        <servlet-name>Jersey REST Service</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.training</param-value>
        </init-param>
        <load-on-startup>1</load-on-startup>
    </servlet>

    <servlet-mapping>
        <servlet-name>Jersey REST Service</servlet-name>
        <url-pattern>/rest/*</url-pattern>
    </servlet-mapping>

</web-app>

pom.xml

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">

    <modelVersion>4.0.0</modelVersion>

    <groupId>com.training</groupId>
    <artifactId>jax_rs_jersey_file_upload_example</artifactId>
    <version>1.0</version>
    <packaging>war</packaging>

    <properties>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
        <maven.compiler.source>1.7</maven.compiler.source>
        <maven.compiler.target>1.7</maven.compiler.target>
        <jersey.version>1.19</jersey.version>
    </properties>

    <dependencies>
        <dependency>
            <groupId>com.sun.jersey</groupId>
            <artifactId>jersey-core</artifactId>
            <version>${jersey.version}</version>
        </dependency>
        <dependency>
            <groupId>com.sun.jersey</groupId>
            <artifactId>jersey-servlet</artifactId>
            <version>${jersey.version}</version>
        </dependency>
        <dependency>
            <groupId>com.sun.jersey</groupId>
            <artifactId>jersey-json</artifactId>
            <version>${jersey.version}</version>
        </dependency>
        <dependency>
            <groupId>com.sun.jersey.contribs</groupId>
            <artifactId>jersey-multipart</artifactId>
            <version>${jersey.version}</version>
        </dependency>
    </dependencies>

</project>