├── .gitignore
├── README.md
├── configuration.yml
├── pom.xml
└── src
    └── main
        ├── java
            └── eu
            │   └── kielczewski
            │       └── example
            │           ├── ExampleService.java
            │           ├── config
            │               ├── DatabaseConfiguration.java
            │               ├── ExampleServiceConfiguration.java
            │               └── MessagesConfiguration.java
            │           ├── dao
            │               ├── UserDao.java
            │               └── UserDaoImpl.java
            │           ├── model
            │               └── User.java
            │           └── resource
            │               ├── HelloResource.java
            │               └── UserResource.java
        └── resources
            └── META-INF
                └── persistence.xml


/.gitignore:
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1 | .idea
2 | *.iml
3 | target
4 | dependency-reduced-pom.xml
5 | 


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/README.md:
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 1 | Dropwizard with Guice and JPA Example
 2 | =====================================
 3 | 
 4 | Dropwizard application using Guice and JPA
 5 | 
 6 | Check out: [http://kielczewski.eu/2013/05/developing-restful-web-services-using-dropwizard-part-ii/](http://kielczewski.eu/2013/05/developing-restful-web-services-using-dropwizard-part-ii/) and [http://kielczewski.eu/2013/05/developing-restful-web-services-using-dropwizard-part-iii/](http://kielczewski.eu/2013/05/developing-restful-web-services-using-dropwizard-part-iii/)
 7 | 
 8 | Requirements
 9 | ------------
10 | * [Java Platform (JDK) 7](http://www.oracle.com/technetwork/java/javase/downloads/index.html)
11 | * [Apache Maven 3.x](http://maven.apache.org/)
12 | 
13 | Quick start
14 | -----------
15 | 1. `mvn package`
16 | 2. `java -jar target/example-dropwizard-guice-1.0-SNAPSHOT.jar`
17 | 3. Point your browser to [http://localhost:8080/hello](http://localhost:8080/hello)
18 | 


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/configuration.yml:
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1 | messages:
2 |   hello: Hello world!
3 | 
4 | database:
5 |   driverClass: com.mysql.jdbc.Driver
6 |   user:
7 |   password:
8 |   url: jdbc:mysql://localhost/test


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/pom.xml:
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 1 | <?xml version="1.0" encoding="UTF-8"?>
 2 | <project xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
 3 |          xmlns="http://maven.apache.org/POM/4.0.0"
 4 |          xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
 5 |     <modelVersion>4.0.0</modelVersion>
 6 | 
 7 |     <groupId>eu.kielczewski.example.dropwizard</groupId>
 8 |     <artifactId>example-dropwizard-guice</artifactId>
 9 |     <version>1.0-SNAPSHOT</version>
10 |     <name>Example Dropwizard With Guice Application</name>
11 | 
12 |     <properties>
13 |         <dropwizard.version>0.6.2</dropwizard.version>
14 |         <guice.version>3.0</guice.version>
15 |         <eclipselink.version>2.5.1</eclipselink.version>
16 |         <mysql-connector-java.version>5.1.30</mysql-connector-java.version>
17 |         <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
18 |         <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
19 |     </properties>
20 | 
21 |     <dependencies>
22 |         <dependency>
23 |             <groupId>com.yammer.dropwizard</groupId>
24 |             <artifactId>dropwizard-core</artifactId>
25 |             <version>${dropwizard.version}</version>
26 |         </dependency>
27 |         <dependency>
28 |             <groupId>com.google.inject</groupId>
29 |             <artifactId>guice</artifactId>
30 |             <version>${guice.version}</version>
31 |         </dependency>
32 |         <dependency>
33 |             <groupId>com.google.inject.extensions</groupId>
34 |             <artifactId>guice-persist</artifactId>
35 |             <version>${guice.version}</version>
36 |         </dependency>
37 |         <dependency>
38 |             <groupId>org.eclipse.persistence</groupId>
39 |             <artifactId>eclipselink</artifactId>
40 |             <version>${eclipselink.version}</version>
41 |         </dependency>
42 |         <dependency>
43 |             <groupId>mysql</groupId>
44 |             <artifactId>mysql-connector-java</artifactId>
45 |             <version>${mysql-connector-java.version}</version>
46 |         </dependency>
47 |     </dependencies>
48 | 
49 |     <build>
50 |         <plugins>
51 |             <plugin>
52 |                 <groupId>org.apache.maven.plugins</groupId>
53 |                 <artifactId>maven-compiler-plugin</artifactId>
54 |                 <version>3.1</version>
55 |                 <configuration>
56 |                     <source>1.7</source>
57 |                     <target>1.7</target>
58 |                 </configuration>
59 |             </plugin>
60 |             <plugin>
61 |                 <groupId>org.apache.maven.plugins</groupId>
62 |                 <artifactId>maven-shade-plugin</artifactId>
63 |                 <version>2.2</version>
64 |                 <executions>
65 |                     <execution>
66 |                         <phase>package</phase>
67 |                         <goals>
68 |                             <goal>shade</goal>
69 |                         </goals>
70 |                         <configuration>
71 |                             <transformers>
72 |                                 <transformer
73 |                                         implementation="org.apache.maven.plugins.shade.resource.ManifestResourceTransformer">
74 |                                     <mainClass>eu.kielczewski.example.ExampleService</mainClass>
75 |                                 </transformer>
76 |                             </transformers>
77 |                             <filters>
78 |                                 <filter>
79 |                                     <artifact>*:*</artifact>
80 |                                     <excludes>
81 |                                         <exclude>META-INF/*.SF</exclude>
82 |                                         <exclude>META-INF/*.DSA</exclude>
83 |                                         <exclude>META-INF/*.RSA</exclude>
84 |                                     </excludes>
85 |                                 </filter>
86 |                             </filters>
87 |                         </configuration>
88 |                     </execution>
89 |                 </executions>
90 |             </plugin>
91 |         </plugins>
92 |     </build>
93 | 
94 | </project>


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/src/main/java/eu/kielczewski/example/ExampleService.java:
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 1 | package eu.kielczewski.example;
 2 | 
 3 | import com.google.inject.AbstractModule;
 4 | import com.google.inject.Guice;
 5 | import com.google.inject.Injector;
 6 | import com.google.inject.persist.PersistFilter;
 7 | import com.google.inject.persist.jpa.JpaPersistModule;
 8 | import com.yammer.dropwizard.Service;
 9 | import com.yammer.dropwizard.config.Bootstrap;
10 | import com.yammer.dropwizard.config.Environment;
11 | import eu.kielczewski.example.config.DatabaseConfiguration;
12 | import eu.kielczewski.example.config.ExampleServiceConfiguration;
13 | import eu.kielczewski.example.config.MessagesConfiguration;
14 | import eu.kielczewski.example.dao.UserDao;
15 | import eu.kielczewski.example.dao.UserDaoImpl;
16 | import eu.kielczewski.example.resource.HelloResource;
17 | import eu.kielczewski.example.resource.UserResource;
18 | 
19 | import java.util.Properties;
20 | 
21 | public class ExampleService extends Service<ExampleServiceConfiguration> {
22 | 
23 |     public static void main(String[] args) throws Exception {
24 |         new ExampleService().run(args);
25 |     }
26 | 
27 |     @Override
28 |     public void initialize(final Bootstrap<ExampleServiceConfiguration> bootstrap) {
29 |         bootstrap.setName("dropwizard-example-guice");
30 |     }
31 | 
32 |     // you probably would like to move this method to separate class
33 |     private Injector createInjector(final ExampleServiceConfiguration conf) {
34 |         return Guice.createInjector(new AbstractModule() {
35 |             @Override
36 |             protected void configure() {
37 |                 // if someone would like to @Inject ExampleServiceConfiguration
38 |                 bind(ExampleServiceConfiguration.class).toInstance(conf);
39 |                 // for ExampleResource, which does @Inject MessagesConfiguration
40 |                 bind(MessagesConfiguration.class).toInstance(conf.getMessages());
41 |                 // for UserDao
42 |                 bind(UserDao.class).to(UserDaoImpl.class);
43 |             }
44 |         }, createJpaPersistModule(conf.getDatabase()));
45 |     }
46 | 
47 |     // you probably would like to move this method to separate class
48 |     private JpaPersistModule createJpaPersistModule(DatabaseConfiguration conf) {
49 |         Properties props = new Properties();
50 |         props.put("javax.persistence.jdbc.url", conf.getUrl());
51 |         props.put("javax.persistence.jdbc.user", conf.getUser());
52 |         props.put("javax.persistence.jdbc.password", conf.getPassword());
53 |         props.put("javax.persistence.jdbc.driver", conf.getDriverClass());
54 |         JpaPersistModule jpaModule = new JpaPersistModule("Default");
55 |         jpaModule.properties(props);
56 |         return jpaModule;
57 |     }
58 | 
59 |     @Override
60 |     public void run(final ExampleServiceConfiguration conf, final Environment env) {
61 |         Injector injector = createInjector(conf);
62 |         env.addFilter(injector.getInstance(PersistFilter.class), "/*");
63 |         env.addResource(injector.getInstance(HelloResource.class));
64 |         env.addResource(injector.getInstance(UserResource.class));
65 |     }
66 | 
67 | }
68 | 


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/src/main/java/eu/kielczewski/example/config/DatabaseConfiguration.java:
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 1 | package eu.kielczewski.example.config;
 2 | 
 3 | import javax.validation.constraints.NotNull;
 4 | 
 5 | @SuppressWarnings("UnusedDeclaration")
 6 | public class DatabaseConfiguration {
 7 | 
 8 |     @NotNull
 9 |     private String driverClass;
10 |     private String user;
11 |     private String password;
12 |     @NotNull
13 |     private String url;
14 | 
15 |     public String getDriverClass() {
16 |         return driverClass;
17 |     }
18 | 
19 |     public void setDriverClass(String driverClass) {
20 |         this.driverClass = driverClass;
21 |     }
22 | 
23 |     public String getUser() {
24 |         return user;
25 |     }
26 | 
27 |     public void setUser(String user) {
28 |         this.user = user;
29 |     }
30 | 
31 |     public String getPassword() {
32 |         return password;
33 |     }
34 | 
35 |     public void setPassword(String password) {
36 |         this.password = password;
37 |     }
38 | 
39 |     public String getUrl() {
40 |         return url;
41 |     }
42 | 
43 |     public void setUrl(String url) {
44 |         this.url = url;
45 |     }
46 | }


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/src/main/java/eu/kielczewski/example/config/ExampleServiceConfiguration.java:
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 1 | package eu.kielczewski.example.config;
 2 | 
 3 | import com.yammer.dropwizard.config.Configuration;
 4 | 
 5 | import javax.validation.Valid;
 6 | import javax.validation.constraints.NotNull;
 7 | 
 8 | @SuppressWarnings("UnusedDeclaration")
 9 | public class ExampleServiceConfiguration extends Configuration {
10 | 
11 |     @NotNull
12 |     @Valid
13 |     private MessagesConfiguration messages;
14 | 
15 |     @NotNull
16 |     @Valid
17 |     private DatabaseConfiguration database;
18 | 
19 |     public MessagesConfiguration getMessages() {
20 |         return messages;
21 |     }
22 | 
23 |     public void setMessages(MessagesConfiguration messages) {
24 |         this.messages = messages;
25 |     }
26 | 
27 |     public DatabaseConfiguration getDatabase() {
28 |         return database;
29 |     }
30 | 
31 |     public void setDatabase(DatabaseConfiguration database) {
32 |         this.database = database;
33 |     }
34 | 
35 | }
36 | 


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/src/main/java/eu/kielczewski/example/config/MessagesConfiguration.java:
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 1 | package eu.kielczewski.example.config;
 2 | 
 3 | import javax.validation.constraints.NotNull;
 4 | 
 5 | @SuppressWarnings("UnusedDeclaration")
 6 | public class MessagesConfiguration {
 7 | 
 8 |     @NotNull
 9 |     private String hello;
10 | 
11 |     public String getHello() {
12 |         return hello;
13 |     }
14 | 
15 |     public void setHello(String hello) {
16 |         this.hello = hello;
17 |     }
18 | 
19 | }
20 | 


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/src/main/java/eu/kielczewski/example/dao/UserDao.java:
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 1 | package eu.kielczewski.example.dao;
 2 | 
 3 | import eu.kielczewski.example.model.User;
 4 | 
 5 | public interface UserDao {
 6 | 
 7 |     User getById(long id);
 8 | 
 9 |     User save(User user);
10 | 
11 | }
12 | 


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/src/main/java/eu/kielczewski/example/dao/UserDaoImpl.java:
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 1 | package eu.kielczewski.example.dao;
 2 | 
 3 | import com.google.inject.persist.Transactional;
 4 | import eu.kielczewski.example.model.User;
 5 | 
 6 | import javax.persistence.EntityManager;
 7 | import javax.persistence.PersistenceContext;
 8 | 
 9 | public class UserDaoImpl implements UserDao {
10 | 
11 |     @PersistenceContext
12 |     private EntityManager em;
13 | 
14 |     @Override
15 |     public User getById(long id) {
16 |         return em.find(User.class, id);
17 |     }
18 | 
19 |     @Override
20 |     @Transactional
21 |     public User save(User user) {
22 |         em.persist(user);
23 |         return user;
24 |     }
25 | 
26 | }
27 | 


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/src/main/java/eu/kielczewski/example/model/User.java:
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 1 | package eu.kielczewski.example.model;
 2 | 
 3 | import javax.persistence.Entity;
 4 | import javax.persistence.GeneratedValue;
 5 | import javax.persistence.GenerationType;
 6 | import javax.persistence.Id;
 7 | import javax.validation.constraints.NotNull;
 8 | import javax.validation.constraints.Size;
 9 | 
10 | @Entity
11 | public class User {
12 | 
13 |     @Id
14 |     @NotNull
15 |     @GeneratedValue(strategy = GenerationType.IDENTITY)
16 |     private long id;
17 | 
18 |     @NotNull
19 |     @Size(min = 2, max = 64)
20 |     private String name;
21 | 
22 |     @NotNull
23 |     @Size(min = 2, max = 16)
24 |     private String login;
25 | 
26 |     @NotNull
27 |     @Size(min = 2, max = 16)
28 |     private String password;
29 | 
30 |     public User() {
31 |     }
32 | 
33 |     public User(long id, String name, String login, String password) {
34 |         this.id = id;
35 |         this.name = name;
36 |         this.login = login;
37 |         this.password = password;
38 |     }
39 | 
40 |     public long getId() {
41 |         return id;
42 |     }
43 | 
44 |     public void setId(long id) {
45 |         this.id = id;
46 |     }
47 | 
48 |     public String getName() {
49 |         return name;
50 |     }
51 | 
52 |     public void setName(String name) {
53 |         this.name = name;
54 |     }
55 | 
56 |     public String getLogin() {
57 |         return login;
58 |     }
59 | 
60 |     public void setLogin(String login) {
61 |         this.login = login;
62 |     }
63 | 
64 |     public String getPassword() {
65 |         return password;
66 |     }
67 | 
68 |     public void setPassword(String password) {
69 |         this.password = password;
70 |     }
71 | }
72 | 


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/src/main/java/eu/kielczewski/example/resource/HelloResource.java:
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 1 | package eu.kielczewski.example.resource;
 2 | 
 3 | import eu.kielczewski.example.config.MessagesConfiguration;
 4 | 
 5 | import javax.inject.Inject;
 6 | import javax.servlet.http.HttpServletRequest;
 7 | import javax.ws.rs.*;
 8 | import javax.ws.rs.core.Context;
 9 | 
10 | @Path(value = "/hello")
11 | public class HelloResource {
12 | 
13 |     private final MessagesConfiguration conf;
14 | 
15 |     @Inject
16 |     public HelloResource(final MessagesConfiguration conf) {
17 |         this.conf = conf;
18 |     }
19 | 
20 |     @GET
21 |     public String sayHello() {
22 |         return conf.getHello();
23 |     }
24 | 
25 |     @POST
26 |     @Path("/{id}")
27 |     public String parameterDemoMethod(String body,
28 |                                       @PathParam("id") long id,
29 |                                       @QueryParam("foo") String foo,
30 |                                       @HeaderParam("X-Auth-Token") String token,
31 |                                       @Context HttpServletRequest request) {
32 |         String response;
33 |         response = "id = " + id + "\n";
34 |         response += "body = " + body + "\n";
35 |         response += "foo = " + foo + "\n";
36 |         response += "token = " + token + "\n";
37 |         response += "ip = " + request.getRemoteAddr() + "\n";
38 |         return response;
39 |     }
40 | 
41 | }
42 | 


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/src/main/java/eu/kielczewski/example/resource/UserResource.java:
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 1 | package eu.kielczewski.example.resource;
 2 | 
 3 | import eu.kielczewski.example.dao.UserDao;
 4 | import eu.kielczewski.example.model.User;
 5 | 
 6 | import javax.inject.Inject;
 7 | import javax.validation.Valid;
 8 | import javax.ws.rs.*;
 9 | import javax.ws.rs.core.MediaType;
10 | 
11 | @Path("/user")
12 | @Produces(MediaType.APPLICATION_JSON)
13 | @Consumes(MediaType.APPLICATION_JSON)
14 | public class UserResource {
15 | 
16 |     private final UserDao userDao;
17 | 
18 |     @Inject
19 |     public UserResource(final UserDao userDao) {
20 |         this.userDao = userDao;
21 |     }
22 | 
23 |     @GET
24 |     @Path("/{id}")
25 |     public User getUser(@PathParam("id") long id) {
26 |         return userDao.getById(id);
27 |     }
28 | 
29 |     @POST
30 |     public User addUser(@Valid User user) {
31 |         return userDao.save(user);
32 |     }
33 | 
34 | }


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/src/main/resources/META-INF/persistence.xml:
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 1 | <?xml version="1.0" encoding="UTF-8"?>
 2 | <persistence xmlns="http://java.sun.com/xml/ns/persistence" version="2.0">
 3 |     <persistence-unit name="Default" transaction-type="RESOURCE_LOCAL">
 4 |         <provider>org.eclipse.persistence.jpa.PersistenceProvider</provider>
 5 |         <exclude-unlisted-classes>false</exclude-unlisted-classes>
 6 |         <properties>
 7 |             <property name="eclipselink.ddl-generation" value="create-tables"/>
 8 |             <property name="eclipselink.ddl-generation.output-mode" value="database"/>
 9 |         </properties>
10 |     </persistence-unit>
11 | </persistence>


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