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 +1,48 @@
+package org.baeldung.gson.entities;
+
+import java.util.Date;
+import java.util.List;
+
+public class ActorGson {
+
+    @Override
+    public String toString() {
+        return "ActorGson [imdbId=" + imdbId + ", dateOfBirth=" + dateOfBirth + ", filmography=" + filmography + "]";
+    }
+
+    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 ActorGson(String imdbId, Date dateOfBirth, List<String> filmography) {
+        super();
+        this.imdbId = imdbId;
+        this.dateOfBirth = dateOfBirth;
+        this.filmography = filmography;
+    }
+
+}
@@ -0,0 +1,46 @@
+package org.baeldung.gson.entities;
+
+import java.util.List;
+
+public class Movie {
+
+    @Override
+    public String toString() {
+        return "Movie [imdbId=" + imdbId + ", director=" + director + ", actors=" + actors + "]";
+    }
+
+    private String imdbId;
+    private String director;
+    private List<ActorGson> actors;
+
+    public Movie(String imdbID, String director, List<ActorGson> 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<ActorGson> getActors() {
+        return actors;
+    }
+
+    public void setActors(List<ActorGson> actors) {
+        this.actors = actors;
+    }
+}
@@ -0,0 +1,45 @@
+package org.baeldung.gson.entities;
+
+import java.util.List;
+
+import com.google.gson.annotations.Expose;
+
+public class MovieWithNullValue {
+
+    @Expose
+    private String imdbId;
+    private String director;
+    @Expose
+    private List<ActorGson> actors;
+
+    public MovieWithNullValue(String imdbID, String director, List<ActorGson> 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<ActorGson> getActors() {
+        return actors;
+    }
+
+    public void setActors(List<ActorGson> actors) {
+        this.actors = actors;
+    }
+}
@@ -0,0 +1,52 @@
+package org.baeldung.gson.serialization;
+
+import java.lang.reflect.Type;
+import java.text.ParseException;
+import java.text.SimpleDateFormat;
+import java.time.LocalDate;
+import java.time.ZoneId;
+import java.util.ArrayList;
+import java.util.Date;
+import java.util.List;
+import java.util.TimeZone;
+import java.util.stream.Collectors;
+
+import org.baeldung.gson.entities.ActorGson;
+
+import com.google.gson.JsonArray;
+import com.google.gson.JsonDeserializationContext;
+import com.google.gson.JsonDeserializer;
+import com.google.gson.JsonElement;
+import com.google.gson.JsonObject;
+import com.google.gson.JsonParseException;
+
+public class ActorGsonDeserializer implements JsonDeserializer<ActorGson> {
+
+    private SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd'T'HH:mm:ss");
+
+    @Override
+    public ActorGson deserialize(JsonElement json, Type type, JsonDeserializationContext jsonDeserializationContext) throws JsonParseException {
+
+        JsonObject jsonObject = json.getAsJsonObject();
+
+        JsonElement jsonImdbId = jsonObject.get("imdbId");
+        JsonElement jsonDateOfBirth = jsonObject.get("dateOfBirth");
+        JsonArray jsonFilmography = jsonObject.getAsJsonArray("filmography");
+
+        ArrayList<String> filmList = new ArrayList<String>();
+        if (jsonFilmography != null) {
+            for (int i = 0; i < jsonFilmography.size(); i++) {
+                filmList.add(jsonFilmography.get(i).getAsString());
+            }
+        }
+
+        ActorGson actorGson = null;
+        try {
+            actorGson = new ActorGson(jsonImdbId.getAsString(), sdf.parse(jsonDateOfBirth.getAsString()), filmList);
+        } catch (ParseException e) {
+            // TODO Auto-generated catch block
+            e.printStackTrace();
+        }
+        return actorGson;
+    }
+}
@@ -0,0 +1,34 @@
+package org.baeldung.gson.serialization;
+
+import java.lang.reflect.Type;
+import java.text.SimpleDateFormat;
+import java.util.List;
+import java.util.stream.Collectors;
+
+import org.baeldung.gson.entities.ActorGson;
+
+import com.google.gson.JsonElement;
+import com.google.gson.JsonObject;
+import com.google.gson.JsonSerializationContext;
+import com.google.gson.JsonSerializer;
+
+public class ActorGsonSerializer implements JsonSerializer<ActorGson> {
+
+    private SimpleDateFormat sdf = new SimpleDateFormat("dd-MM-yyyy");
+
+    @Override
+    public JsonElement serialize(ActorGson actor, Type type, JsonSerializationContext jsonSerializationContext) {
+
+        JsonObject actorJsonObj = new JsonObject();
+        actorJsonObj.addProperty("<strong>IMDB Code</strong>", actor.getImdbId());
+        actorJsonObj.addProperty("<strong>Date Of Birth</strong>", actor.getDateOfBirth() != null ? sdf.format(actor.getDateOfBirth()) : null);
+        actorJsonObj.addProperty("<strong>N° Film:</strong> ", actor.getFilmography() != null ? actor.getFilmography().size() : null);
+        actorJsonObj.addProperty("filmography", actor.getFilmography() != null ? convertFilmography(actor.getFilmography()) : null);
+
+        return actorJsonObj;
+    }
+
+    private String convertFilmography(List<String> filmography) {
+        return filmography.stream().collect(Collectors.joining("-"));
+    }
+}
@@ -0,0 +1,38 @@
+package org.baeldung.gson.deserialization;
+
+import java.text.ParseException;
+import org.baeldung.gson.entities.ActorGson;
+import org.baeldung.gson.entities.Movie;
+import org.baeldung.gson.serialization.ActorGsonDeserializer;
+import org.junit.Assert;
+import org.junit.Test;
+
+import com.google.gson.Gson;
+import com.google.gson.GsonBuilder;
+
+public class GsonDeserializeTest {
+
+    @Test
+    public void whenSimpleDeserialize_thenCorrect() throws ParseException {
+
+        String jsonInput = "{\"imdbId\":\"tt0472043\",\"actors\":" + "[{\"imdbId\":\"nm2199632\",\"dateOfBirth\":\"1982-09-21T12:00:00+01:00\",\"filmography\":" + "[\"Apocalypto\",\"Beatdown\",\"Wind Walkers\"]}]}";
+
+        Movie outputMovie = new Gson().fromJson(jsonInput, Movie.class);
+
+        String expectedOutput = "Movie [imdbId=tt0472043, director=null, actors=[ActorGson [imdbId=nm2199632, dateOfBirth=Tue Sep 21 04:00:00 PDT 1982, filmography=[Apocalypto, Beatdown, Wind Walkers]]]]";
+        Assert.assertEquals(outputMovie.toString(), expectedOutput);
+    }
+
+    @Test
+    public void whenCustomDeserialize_thenCorrect() throws ParseException {
+
+        String jsonInput = "{\"imdbId\":\"tt0472043\",\"actors\":" + "[{\"imdbId\":\"nm2199632\",\"dateOfBirth\":\"1982-09-21T12:00:00+01:00\",\"filmography\":" + "[\"Apocalypto\",\"Beatdown\",\"Wind Walkers\"]}]}";
+
+        Gson gson = new GsonBuilder().registerTypeAdapter(ActorGson.class, new ActorGsonDeserializer()).create();
+
+        Movie outputMovie = gson.fromJson(jsonInput, Movie.class);
+
+        String expectedOutput = "Movie [imdbId=tt0472043, director=null, actors=[ActorGson [imdbId=nm2199632, dateOfBirth=Tue Sep 21 12:00:00 PDT 1982, filmography=[Apocalypto, Beatdown, Wind Walkers]]]]";
+        Assert.assertEquals(outputMovie.toString(), expectedOutput);
+    }
+}
@@ -0,0 +1,51 @@
+package org.baeldung.gson.serialization;
+
+import java.text.ParseException;
+import java.text.SimpleDateFormat;
+import java.util.Arrays;
+
+import org.baeldung.gson.entities.ActorGson;
+import org.baeldung.gson.entities.Movie;
+import org.baeldung.gson.entities.MovieWithNullValue;
+import org.baeldung.gson.serialization.ActorGsonDeserializer;
+import org.baeldung.gson.serialization.ActorGsonSerializer;
+import org.junit.Assert;
+import org.junit.Test;
+
+import com.google.gson.Gson;
+import com.google.gson.GsonBuilder;
+import com.google.gson.JsonParser;
+
+public class GsonSerializeTest {
+
+    @Test
+    public void whenSimpleSerialize_thenCorrect() throws ParseException {
+
+        SimpleDateFormat sdf = new SimpleDateFormat("dd-MM-yyyy");
+
+        ActorGson rudyYoungblood = new ActorGson("nm2199632", sdf.parse("21-09-1982"), Arrays.asList("Apocalypto", "Beatdown", "Wind Walkers"));
+        Movie movie = new Movie("tt0472043", "Mel Gibson", Arrays.asList(rudyYoungblood));
+
+        String expectedOutput = "{\"imdbId\":\"tt0472043\",\"director\":\"Mel Gibson\",\"actors\":[{\"imdbId\":\"nm2199632\",\"dateOfBirth\":\"Sep 21, 1982 12:00:00 AM\",\"filmography\":[\"Apocalypto\",\"Beatdown\",\"Wind Walkers\"]}]}";
+        Assert.assertEquals(new Gson().toJson(movie), expectedOutput);
+    }
+
+    @Test
+    public void whenCustomSerialize_thenCorrect() throws ParseException {
+        Gson gson = new GsonBuilder().setPrettyPrinting().excludeFieldsWithoutExposeAnnotation().serializeNulls().disableHtmlEscaping().registerTypeAdapter(ActorGson.class, new ActorGsonSerializer()).create();
+
+        SimpleDateFormat sdf = new SimpleDateFormat("dd-MM-yyyy");
+
+        ActorGson rudyYoungblood = new ActorGson("nm2199632", sdf.parse("21-09-1982"), Arrays.asList("Apocalypto", "Beatdown", "Wind Walkers"));
+        MovieWithNullValue movieWithNullValue = new MovieWithNullValue(null, "Mel Gibson", Arrays.asList(rudyYoungblood));
+
+        String expectedOutput = new GsonBuilder()
+                .setPrettyPrinting()
+                .serializeNulls()
+                .disableHtmlEscaping()
+                .create()
+                .toJson(new JsonParser()
+                        .parse("{\"imdbId\":null,\"actors\":[{\"<strong>IMDB Code</strong>\":\"nm2199632\",\"<strong>Date Of Birth</strong>\":\"21-09-1982\",\"<strong>N° Film:</strong> \":3,\"filmography\":\"Apocalypto-Beatdown-Wind Walkers\"}]}"));
+        Assert.assertEquals(gson.toJson(movieWithNullValue), expectedOutput);
+    }
+}