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Neo4j Movies Example application with SparkJava backend using the neo4j-java-driver

Home Page: http://my-neo4j-movies-app.herokuapp.com/

License: Apache License 2.0

Java 52.20% HTML 47.62% Procfile 0.18%

graph graph-database neo4j cypher bolt java movies-api

movies-java-bolt's Introduction

Neo4j Movies Application: Quick Start

This example application demonstrates how easy it is to get started with Neo4j in Java.

It is a very simple web application that uses our Movie graph dataset to provide a search with listing, a detail view and a graph visualization.

The Stack

These are the components of our Web Application:

Application Type: Java-Web Application
Web framework: Spark-Java (Micro-Webframework)
Neo4j Database Connector: Neo4j-Java-Driver for Cypher Docs
Database: Neo4j-Server (5.x) with multi-database
Frontend: jquery, bootstrap, d3.js

Provision a database quickly with Neo4j Sandbox or Neo4j Aura.

Endpoints:

Get Movie

// JSON object for single movie with cast
curl http://localhost:8080/movie/The%20Matrix

// list of JSON objects for movie search results
curl http://localhost:8080/search?q=matrix

// JSON object for whole graph viz (nodes, links - arrays)
curl http://localhost:8080/graph

Setup

Make sure to install a JDK 17+ and Apache Maven.

Run locally

Just run:

mvn compile exec:java

Go to http://localhost:8080.

You can search for movies by title or and click on any entry.

Or better you can run Neo4j locally to experiment with your own data. Start your local Neo4j Server in Neo4j Desktop (Download & Install), open Neo4j Browser. After logging in, install the Movies graph data set by entering the :play movies command, click the CREATE-statement, and hit the triangular "Run" button.

Configuration options

Environment variable name	Default value (or N/A)
PORT	8080
NEO4J_URI	neo4j+s://demo.neo4jlabs.com
NEO4J_USER	movies
NEO4J_PASSWORD	movies
NEO4J_DATABASE	movies

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movies-java-bolt's Issues

Blurb in Readme.adoc about editing Util.java is invisible on GitHub

On GitHub, the following blurb in Readme.adoc is invisible:

Please edit example.movies.util.Util.java to add your connection settings, for instance "bolt://neo4j:neo4j@localhost"

Because of the back apostrophes in front of it? In any case, it took me a while to look at the copy of Readme.adoc on my computer to find that important little piece of info.

Compilation failed: cannot find IteratorUtil from org.neo4j.helpers.collection

org.apache.maven.lifecycle.LifecycleExecutionException: Failed to execute goal
org.apache.maven.plugins:maven-compiler-plugin:3.1:compile (default-compile) on project neo4j-movies: Compilation failure
.../projects/neo4j-movies-java-bolt/src/main/java/example/movies/backend/MovieService.java:[5,36] cannot find symbol
  symbol:   class IteratorUtil
  location: package org.neo4j.helpers.collection

        at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:212)
        at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:153)
        at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:145)

java -version
java version "1.8.0_77"
Java(TM) SE Runtime Environment (build 1.8.0_77-b03)
Java HotSpot(TM) 64-Bit Server VM (build 25.77-b03, mixed mode)

Complement the example with data creation

Dear @jexp,
I loved this example it is simple and elegant do you have and example of using the example.movies.executor.CypherExecutor to add data to the database ?
As this example is just reading data the 3 methods of the example.movies.backend.MovieService to only retrieval of data, can I use the CypherExecutor.query method also to insert data in the database ?

Thank you, kindly
Luis Oscar

where is the css and pics?

PLZZZZ, where to find the css files and pictures?

The requested route [/app/] has not been mapped in Spark

Hi,

I have configured the steps as mentioned in the github and mvn compile exec:java also compiles successfully. However, going to http://localhost:8080/app/ gives a 404 error in the browser and "INFO spark.http.matching.MatcherFilter - The requested route [/app/] has not been mapped in Spark" error in the backend. How can this issue be resolved ?

Here's the log:

Puneets-MBP:neo4j-movies-java-bolt puneetl$ mvn compile exec:java
[INFO] Scanning for projects...
[INFO]
[INFO] ------------------------------------------------------------------------
[INFO] Building Neo4j Movies Demo 3.0-SNAPSHOT
[INFO] ------------------------------------------------------------------------
[INFO]
[INFO] --- maven-resources-plugin:2.6:resources (default-resources) @ neo4j-movies ---
[WARNING] Using platform encoding (UTF-8 actually) to copy filtered resources, i.e. build is platform dependent!
[INFO] Copying 1 resource
[INFO]
[INFO] --- maven-compiler-plugin:3.1:compile (default-compile) @ neo4j-movies ---
[INFO] Changes detected - recompiling the module!
[INFO] Compiling 6 source files to /Users/puneetl/Documents/github/neo4j-movies-java-bolt/target/classes
[WARNING] /Users/puneetl/Documents/github/neo4j-movies-java-bolt/src/main/java/example/movies/backend/MovieServer.java: Some input files use or override a deprecated API.
[WARNING] /Users/puneetl/Documents/github/neo4j-movies-java-bolt/src/main/java/example/movies/backend/MovieServer.java: Recompile with -Xlint:deprecation for details.
[INFO]
[INFO] >>> exec-maven-plugin:1.2.1:java (default-cli) > validate @ neo4j-movies >>>
[INFO]
[INFO] <<< exec-maven-plugin:1.2.1:java (default-cli) < validate @ neo4j-movies <<<
[INFO]
[INFO] --- exec-maven-plugin:1.2.1:java (default-cli) @ neo4j-movies ---
11:24:28.391 [example.movies.backend.MovieServer.main()] INFO spark.staticfiles.StaticFilesConfiguration - External StaticResourceHandler configured with folder = src/main/webapp
11:24:28.581 [example.movies.backend.MovieServer.main()] DEBUG spark.route.Routes - Adds route: get, /movie/:title, spark.RouteImpl$1@6986c54
11:24:28.584 [example.movies.backend.MovieServer.main()] DEBUG spark.route.Routes - Adds route: get, /search, spark.RouteImpl$1@7f135c7f
11:24:28.586 [example.movies.backend.MovieServer.main()] DEBUG spark.route.Routes - Adds route: get, /graph, spark.RouteImpl$1@dcab0f3
11:24:28.714 [Thread-1] INFO spark.embeddedserver.jetty.EmbeddedJettyServer - == Spark has ignited ...
11:24:28.717 [Thread-1] INFO spark.embeddedserver.jetty.EmbeddedJettyServer - >> Listening on 0.0.0.0:8080
11:24:38.635 [qtp72681950-16] INFO spark.http.matching.MatcherFilter - The requested route [/app/] has not been mapped in Spark

Cannot compile application

Dear folks,
I have downloaded applicaiton and tried to compiled it, I am facing with classNotFound Exception.

As below:

java.lang.ClassNotFoundException: example.jdbc.movies.MovieServer
at java.net.URLClassLoader.findClass(URLClassLoader.java:381)
at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
at org.codehaus.mojo.exec.ExecJavaMojo$1.run(ExecJavaMojo.java:285)
at java.lang.Thread.run(Thread.java:745)
[INFO] ------------------------------------------------------------------------
[INFO] BUILD FAILURE
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 4.404 s
[INFO] Finished at: 2016-09-08T17:33:29+08:00
[INFO] Final Memory: 10M/24M
[INFO] ------------------------------------------------------------------------
[ERROR] Failed to execute goal org.codehaus.mojo:exec-maven-plugin:1.2.1:java (default-cli) on project neo4j-movies: An exception occured while executing the Java class. example.jdbc.movies.MovieServer -> [Help 1]
[ERROR]
[ERROR] To see the full stack trace of the errors, re-run Maven with the -e switch.
[ERROR] Re-run Maven using the -X switch to enable full debug logging.
[ERROR]
[ERROR] For more information about the errors and possible solutions, please read the following articles:
[ERROR] [Help 1] http://cwiki.apache.org/confluence/display/MAVEN/MojoExecutionException

I have checked this class, but seems no such as class like this, MovieServer class belong to
example.movies.backend.MovieServer.

Appreciate for your promt action.

example.jdbc.movies.MovieServer