Added jackson/gson updates (#552)

2016-08-09 21:51:06 -07:00
parent 87d260ce46
commit 31d9e1bef6
13 changed files with 599 additions and 0 deletions
@@ -0,0 +1,55 @@
+package org.baeldung.jackson.entities;
+
+import java.util.Date;
+import java.util.List;
+
+import com.fasterxml.jackson.databind.annotation.JsonDeserialize;
+
+public class ActorJackson {
+
+    private String imdbId;
+    private Date dateOfBirth;
+    private List<String> filmography;
+
+    public String getImdbId() {
+        return imdbId;
+    }
+
+    public void setImdbId(String imdbId) {
+        this.imdbId = imdbId;
+    }
+
+    public Date getDateOfBirth() {
+        return dateOfBirth;
+    }
+
+    public void setDateOfBirth(Date dateOfBirth) {
+        this.dateOfBirth = dateOfBirth;
+    }
+
+    public List<String> getFilmography() {
+        return filmography;
+    }
+
+    public void setFilmography(List<String> filmography) {
+        this.filmography = filmography;
+    }
+
+    public ActorJackson(String imdbId, Date dateOfBirth, List<String> filmography) {
+        super();
+        this.imdbId = imdbId;
+        this.dateOfBirth = dateOfBirth;
+        this.filmography = filmography;
+    }
+
+    public ActorJackson() {
+
+        super();
+    }
+
+    @Override
+    public String toString() {
+        return "ActorJackson [imdbId=" + imdbId + ", dateOfBirth=" + dateOfBirth + ", filmography=" + filmography + "]";
+    }
+
+}
@@ -0,0 +1,50 @@
+package org.baeldung.jackson.entities;
+
+import java.util.List;
+
+public class Movie {
+
+    private String imdbId;
+    private String director;
+    private List<ActorJackson> actors;
+
+    public Movie(String imdbId, String director, List<ActorJackson> actors) {
+        super();
+        this.imdbId = imdbId;
+        this.director = director;
+        this.actors = actors;
+    }
+
+    public Movie() {
+        super();
+    }
+
+    @Override
+    public String toString() {
+        return "Movie [imdbId=" + imdbId + ", director=" + director + ", actors=" + actors + "]";
+    }
+
+    public String getImdbId() {
+        return imdbId;
+    }
+
+    public void setImdbId(String imdbId) {
+        this.imdbId = imdbId;
+    }
+
+    public String getDirector() {
+        return director;
+    }
+
+    public void setDirector(String director) {
+        this.director = director;
+    }
+
+    public List<ActorJackson> getActors() {
+        return actors;
+    }
+
+    public void setActors(List<ActorJackson> actors) {
+        this.actors = actors;
+    }
+}
@@ -0,0 +1,47 @@
+package org.baeldung.jackson.entities;
+
+import java.util.List;
+
+import com.fasterxml.jackson.annotation.JsonIgnore;
+import com.google.gson.annotations.Expose;
+
+public class MovieWithNullValue {
+
+    private String imdbId;
+
+    @JsonIgnore
+    private String director;
+
+    private List<ActorJackson> actors;
+
+    public MovieWithNullValue(String imdbID, String director, List<ActorJackson> actors) {
+        super();
+        this.imdbId = imdbID;
+        this.director = director;
+        this.actors = actors;
+    }
+
+    public String getImdbID() {
+        return imdbId;
+    }
+
+    public void setImdbID(String imdbID) {
+        this.imdbId = imdbID;
+    }
+
+    public String getDirector() {
+        return director;
+    }
+
+    public void setDirector(String director) {
+        this.director = director;
+    }
+
+    public List<ActorJackson> getActors() {
+        return actors;
+    }
+
+    public void setActors(List<ActorJackson> actors) {
+        this.actors = actors;
+    }
+}
@@ -0,0 +1,31 @@
+package org.baeldung.jackson.serialization;
+
+import java.io.IOException;
+import java.text.SimpleDateFormat;
+import java.util.stream.Collectors;
+
+import org.baeldung.jackson.entities.ActorJackson;
+
+import com.fasterxml.jackson.core.JsonGenerator;
+import com.fasterxml.jackson.databind.SerializerProvider;
+import com.fasterxml.jackson.databind.ser.std.StdSerializer;
+
+public class ActorJacksonSerializer extends StdSerializer<ActorJackson> {
+
+    private SimpleDateFormat sdf = new SimpleDateFormat("dd-MM-yyyy");
+
+    public ActorJacksonSerializer(Class t) {
+        super(t);
+    }
+
+    @Override
+    public void serialize(ActorJackson actor, JsonGenerator jsonGenerator, SerializerProvider serializerProvider) throws IOException {
+
+        jsonGenerator.writeStartObject();
+        jsonGenerator.writeStringField("imdbId", actor.getImdbId());
+        jsonGenerator.writeObjectField("dateOfBirth", actor.getDateOfBirth() != null ? sdf.format(actor.getDateOfBirth()) : null);
+        jsonGenerator.writeNumberField("N° Film: ", actor.getFilmography() != null ? actor.getFilmography().size() : null);
+        jsonGenerator.writeStringField("filmography", actor.getFilmography().stream().collect(Collectors.joining("-")));
+        jsonGenerator.writeEndObject();
+    }
+}
@@ -0,0 +1,42 @@
+package org.baeldung.jackson.deserialization;
+
+import java.io.IOException;
+import java.text.DateFormat;
+import java.text.SimpleDateFormat;
+import org.baeldung.jackson.entities.Movie;
+import org.junit.Assert;
+import org.junit.Test;
+
+import com.fasterxml.jackson.core.JsonParseException;
+import com.fasterxml.jackson.databind.JsonMappingException;
+import com.fasterxml.jackson.databind.ObjectMapper;
+
+public class JacksonDeserializeTest {
+
+    @Test
+    public void whenSimpleDeserialize_thenCorrect() throws JsonParseException, JsonMappingException, IOException {
+
+        String jsonInput = "{\"imdbId\":\"tt0472043\",\"actors\":[{\"imdbId\":\"nm2199632\",\"dateOfBirth\":\"1982-09-21T12:00:00+01:00\",\"filmography\":[\"Apocalypto\",\"Beatdown\",\"Wind Walkers\"]}]}";
+        ObjectMapper mapper = new ObjectMapper();
+        Movie movie = mapper.readValue(jsonInput, Movie.class);
+
+        String expectedOutput = "Movie [imdbId=tt0472043, director=null, actors=[ActorJackson [imdbId=nm2199632, dateOfBirth=Tue Sep 21 04:00:00 PDT 1982, filmography=[Apocalypto, Beatdown, Wind Walkers]]]]";
+        Assert.assertEquals(movie.toString(), expectedOutput);
+    }
+
+    @Test
+    public void whenCustomDeserialize_thenCorrect() throws JsonParseException, JsonMappingException, IOException {
+
+        String jsonInput = "{\"imdbId\":\"tt0472043\",\"director\":\"Mel Gibson\",\"actors\":[{\"imdbId\":\"nm2199632\",\"dateOfBirth\":\"1982-09-21T12:00:00+01:00\",\"filmography\":[\"Apocalypto\",\"Beatdown\",\"Wind Walkers\"]}]}";
+
+        ObjectMapper mapper = new ObjectMapper();
+        final DateFormat df = new SimpleDateFormat("yyyy-MM-dd'T'HH:mm:ss");
+        mapper.setDateFormat(df);
+
+        Movie movie = mapper.readValue(jsonInput, Movie.class);
+
+        String expectedOutput = "Movie [imdbId=tt0472043, director=Mel Gibson, actors=[ActorJackson [imdbId=nm2199632, dateOfBirth=Tue Sep 21 12:00:00 PDT 1982, filmography=[Apocalypto, Beatdown, Wind Walkers]]]]";
+        Assert.assertEquals(movie.toString(), expectedOutput);
+    }
+
+}
@@ -0,0 +1,60 @@
+package org.baeldung.jackson.serialization;
+
+import java.io.IOException;
+import java.text.DateFormat;
+import java.text.ParseException;
+import java.text.SimpleDateFormat;
+import java.util.Arrays;
+
+import org.baeldung.jackson.entities.ActorJackson;
+import org.baeldung.jackson.entities.Movie;
+import org.baeldung.jackson.entities.MovieWithNullValue;
+import org.baeldung.jackson.serialization.ActorJacksonSerializer;
+import org.junit.Assert;
+import org.junit.Test;
+
+import com.fasterxml.jackson.core.JsonParseException;
+import com.fasterxml.jackson.core.JsonProcessingException;
+import com.fasterxml.jackson.core.util.DefaultPrettyPrinter;
+import com.fasterxml.jackson.databind.JsonMappingException;
+import com.fasterxml.jackson.databind.ObjectMapper;
+import com.fasterxml.jackson.databind.SerializationFeature;
+import com.fasterxml.jackson.databind.module.SimpleModule;
+
+public class JacksonSerializeTest {
+
+    @Test
+    public void whenSimpleSerialize_thenCorrect() throws JsonProcessingException, ParseException {
+
+        SimpleDateFormat sdf = new SimpleDateFormat("dd-MM-yyyy");
+
+        ActorJackson rudyYoungblood = new ActorJackson("nm2199632", sdf.parse("21-09-1982"), Arrays.asList("Apocalypto", "Beatdown", "Wind Walkers"));
+        Movie movie = new Movie("tt0472043", "Mel Gibson", Arrays.asList(rudyYoungblood));
+
+        ObjectMapper mapper = new ObjectMapper();
+        String jsonResult = mapper.writeValueAsString(movie);
+
+        String expectedOutput = "{\"imdbId\":\"tt0472043\",\"director\":\"Mel Gibson\",\"actors\":[{\"imdbId\":\"nm2199632\",\"dateOfBirth\":401439600000,\"filmography\":[\"Apocalypto\",\"Beatdown\",\"Wind Walkers\"]}]}";
+        Assert.assertEquals(jsonResult, expectedOutput);
+    }
+
+    @Test
+    public void whenCustomSerialize_thenCorrect() throws ParseException, IOException {
+
+        SimpleDateFormat sdf = new SimpleDateFormat("dd-MM-yyyy");
+
+        ActorJackson rudyYoungblood = new ActorJackson("nm2199632", sdf.parse("21-09-1982"), Arrays.asList("Apocalypto", "Beatdown", "Wind Walkers"));
+        MovieWithNullValue movieWithNullValue = new MovieWithNullValue(null, "Mel Gibson", Arrays.asList(rudyYoungblood));
+
+        SimpleModule module = new SimpleModule();
+        module.addSerializer(new ActorJacksonSerializer(ActorJackson.class));
+        ObjectMapper mapper = new ObjectMapper();
+
+        String jsonResult = mapper.registerModule(module).writer(new DefaultPrettyPrinter()).writeValueAsString(movieWithNullValue);
+
+        Object json = mapper.readValue("{\"actors\":[{\"imdbId\":\"nm2199632\",\"dateOfBirth\":\"21-09-1982\",\"N° Film: \":3,\"filmography\":\"Apocalypto-Beatdown-Wind Walkers\"}],\"imdbID\":null}", Object.class);
+        String expectedOutput = new ObjectMapper().enable(SerializationFeature.INDENT_OUTPUT).writeValueAsString(json);
+
+        Assert.assertEquals(jsonResult, expectedOutput);
+    }
+}