Examples of com.google.gson.Gson.fromJson()

com.google.gson.Gson.fromJson()
This method deserializes the specified Json into an object of the specified class. It is not suitable to use if the specified class is a generic type since it will not have the generic type information because of the Type Erasure feature of Java. Therefore, this method should not be used if the desired type is a generic type. Note that this method works fine if the any of the fields of the specified object are generics, just the object itself should not be a generic type. For the cases when the object is of generic type, invoke {@link #fromJson(String,Type)}. If you have the Json in a {@link Reader} instead ofa String, use {@link #fromJson(Reader,Class)} instead. @param < T> the type of the desired object @param json the string from which the object is to be deserialized @param classOfT the class of T @return an object of type T from the string @throws JsonParseException if json is not a valid representation for an object of typeclassOfT

        flat.put("type", "chat");
        flat.put("title", title);
        flat.put("body", body);
        flat.put("dialogue", dialogue);
        Gson gson = new GsonBuilder().registerTypeAdapter(Post.class, new PostDeserializer()).create();
        post = (ChatPost) gson.fromJson(flatSerialize(flat), Post.class);
    }


    @Test
    public void testReaders() {
        assertEquals(title, post.getTitle());

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    public void setup() {
        Map<String, Object> flat = new HashMap<String, Object>();
        flat.put("type", "nonexistent");
        flat.put("id", id);
        Gson gson = new GsonBuilder().registerTypeAdapter(Post.class, new PostDeserializer()).create();
        post = gson.fromJson(flatSerialize(flat), Post.class);
    }


    @Test
    public void isFound() {
        UnknownTypePost upost = (UnknownTypePost) post;

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        flat.put("ask", ask);
        flat.put("ask_anon", ask_anon);
        flat.put("followers", followers);


        Gson gson = new Gson();
        blog = gson.fromJson(flatSerialize(flat), Blog.class);
        blog.setName(blog.getName());
        client = mock(JumblrClient.class);
        blog.setClient(client);
    }

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        flat.put("author", author);
        flat.put("slug", slug);
        flat.put("notes", notes);
        flat.put("note_count", 123);
        Gson gson = new GsonBuilder().registerTypeAdapter(Post.class, new PostDeserializer()).create();
        post = (QuotePost) gson.fromJson(flatSerialize(flat), Post.class);
    }


    @Test
    public void testReaders() {
        assertEquals(source, post.getSource());

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        flat.put("likes", likes);
        flat.put("blogs", blogs);
        flat.put("default_post_format", default_post_format);


        Gson gson = new Gson();
        user = gson.fromJson(flatSerialize(flat), User.class);
    }


    @Test
    public void testReaders() {
        assertEquals(default_post_format, user.getDefaultPostFormat());

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        flat.put("caption", caption);
        flat.put("width", width);
        flat.put("height", height);
        flat.put("photos", photos);
        Gson gson = new GsonBuilder().registerTypeAdapter(Post.class, new PostDeserializer()).create();
        post = (PhotoPost) gson.fromJson(flatSerialize(flat), Post.class);
    }


    @Test
    public void testReaders() {
        assertEquals(caption, post.getCaption());

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  protected String text(String entity, Type type) {
    switch (type) {
    case JSON:
      Gson gson = new Gson();
      return gson.fromJson(entity, Page.class).content;
    case XML:
      XStream xstream = new XStream();
      xstream.alias("page", Page.class);
      xstream.ignoreUnknownElements();
      return ((Page) xstream.fromXML(entity)).content;

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    return format(INDEX_URI, rootPath);
  }


  private Collection<Page> parse(String entity) {
    Gson gson = new Gson();
    return gson.<Collection<Page>> fromJson(
        jsonMember(entity, "pageSummaries"),
        new TypeToken<Collection<Page>>() {
        }.getType());
  }

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    return format(INDEX_URI, rootPath);
  }


    private Collection<Page> parse(String entity) {
        Gson gson = new Gson();
        return gson.<Collection<Page>> fromJson(jsonMember(entity, "wiki_pages"),
                new TypeToken<Collection<Page>>() {
                }.getType());
    }


    private String jsonMember(String entity, String memberName) {

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  protected String text(String entity, Type type) {
    switch (type) {
    case JSON:
      Gson gson = new Gson();
      return gson.fromJson(jsonMember(entity, "wiki_page"),
          WikiPage.class).text;
    case XML:
      XStream xstream = new XStream();
      xstream.alias("wiki_page", WikiPage.class);
      xstream.ignoreUnknownElements();

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