改造 Gson:预期 BEGIN_ARRAY 但为 BEGIN_OBJECT(不重复)
Retrofit Gson : Expected BEGIN_ARRAY but was BEGIN_OBJECT (Not duplicate)
拜托,我尝试了两种方法来解决这个问题,但都不起作用,我不知道发生了什么,但在它没有问题之前。
我有以下 json :
{
"_embedded" : {
"posts" : [ {
"postid" : 1,
"taggedusers" : null,
"hashtags" : null,
"createdAt" : "2016-05-07",
"commentsCount" : 0,
"likesCount" : 0,
"shareCount" : 0,
"description" : "nothing",
"post" : "nothing",
"_links" : {
"self" : {
"href" : "http://localhost:8080/posts/1"
},
"postsEntity" : {
"href" : "http://localhost:8080/posts/1"
},
"usersByUserid" : {
"href" : "http://localhost:8080/posts/1/usersByUserid"
},
"commentsesByPostid" : {
"href" : "http://localhost:8080/posts/1/commentsesByPostid"
}
}
}, {
"postid" : 2,
"taggedusers" : null,
"hashtags" : null,
"createdAt" : "2016-05-07",
"commentsCount" : 0,
"likesCount" : 0,
"shareCount" : 0,
"description" : "nothing",
"post" : "nothing",
"_links" : {
"self" : {
"href" : "http://localhost:8080/posts/2"
},
"postsEntity" : {
"href" : "http://localhost:8080/posts/2"
},
"usersByUserid" : {
"href" : "http://localhost:8080/posts/2/usersByUserid"
},
"commentsesByPostid" : {
"href" : "http://localhost:8080/posts/2/commentsesByPostid"
}
}
} ]
},
"_links" : {
"self" : {
"href" : "http://localhost:8080/users/6/postsesByUserid"
}
}
}
我尝试在改造中使用以下内容阅读它:
Retrofit retrofit = RetrofitGenerator.initRetrofit(CacheUtils.readSharedPreference(getActivity()).getToken());
PostService postService= retrofit.create(PostService.class);
postService.getUsersPost((int) CacheUtils.readSharedPreference(getActivity()).getUserID()).enqueue(new Callback<List<Post>>() {
@Override
public void onResponse(Call<List<Post>> call, Response<List<Post>> response) {
if(response.isSuccessful()){
List<Post> postEntitiyList = response.body();
}
}
@Override
public void onFailure(Call<List<Post>> call, Throwable t) {
Log.e("teeest",t.getMessage());
}
});
和接口:
public interface PostService {
@Headers("Content-Type:application/json")
@GET("/posts")
Call<List<Post>> getAllPosts();
@Headers("Content-Type:application/json")
@GET("users/{id}/postsesByUserid")
Call<List<Post>> getUsersPost(@Path("id") int id);
}
但我遇到了这个问题:预期 BEGIN_ARRAY 但在第 1 行第 2 列路径 $=BEGIN_OBJECT
我试着在另一个 class 中制作 Post Pojo,如下所示:
public class PostEntitiy {
private Post post;
public PostEntitiy(Post post) {
this.post = post;
}
public Post getPost() {
return post;
}
public void setPost(Post post) {
this.post = post;
}
}
然后我用 List 仍然遇到同样的问题,我用错了什么?
Expected BEGIN_ARRAY but was BEGIN_OBJECT
您的 JSON 不是列表,它是一个对象:{ ... }
=> 对象,[ ... ]
=> 列表。
编辑
入门指南:
class Embedded {
...
}
class Links {
...
}
class Top {
Embedded _embedded;
Links _links;
}
等等等等。
然后您所有的 List<Post>
都应替换为 Top
。
更改我的 类 的命名以适合您的风格。
拜托,我尝试了两种方法来解决这个问题,但都不起作用,我不知道发生了什么,但在它没有问题之前。 我有以下 json :
{
"_embedded" : {
"posts" : [ {
"postid" : 1,
"taggedusers" : null,
"hashtags" : null,
"createdAt" : "2016-05-07",
"commentsCount" : 0,
"likesCount" : 0,
"shareCount" : 0,
"description" : "nothing",
"post" : "nothing",
"_links" : {
"self" : {
"href" : "http://localhost:8080/posts/1"
},
"postsEntity" : {
"href" : "http://localhost:8080/posts/1"
},
"usersByUserid" : {
"href" : "http://localhost:8080/posts/1/usersByUserid"
},
"commentsesByPostid" : {
"href" : "http://localhost:8080/posts/1/commentsesByPostid"
}
}
}, {
"postid" : 2,
"taggedusers" : null,
"hashtags" : null,
"createdAt" : "2016-05-07",
"commentsCount" : 0,
"likesCount" : 0,
"shareCount" : 0,
"description" : "nothing",
"post" : "nothing",
"_links" : {
"self" : {
"href" : "http://localhost:8080/posts/2"
},
"postsEntity" : {
"href" : "http://localhost:8080/posts/2"
},
"usersByUserid" : {
"href" : "http://localhost:8080/posts/2/usersByUserid"
},
"commentsesByPostid" : {
"href" : "http://localhost:8080/posts/2/commentsesByPostid"
}
}
} ]
},
"_links" : {
"self" : {
"href" : "http://localhost:8080/users/6/postsesByUserid"
}
}
}
我尝试在改造中使用以下内容阅读它:
Retrofit retrofit = RetrofitGenerator.initRetrofit(CacheUtils.readSharedPreference(getActivity()).getToken());
PostService postService= retrofit.create(PostService.class);
postService.getUsersPost((int) CacheUtils.readSharedPreference(getActivity()).getUserID()).enqueue(new Callback<List<Post>>() {
@Override
public void onResponse(Call<List<Post>> call, Response<List<Post>> response) {
if(response.isSuccessful()){
List<Post> postEntitiyList = response.body();
}
}
@Override
public void onFailure(Call<List<Post>> call, Throwable t) {
Log.e("teeest",t.getMessage());
}
});
和接口:
public interface PostService {
@Headers("Content-Type:application/json")
@GET("/posts")
Call<List<Post>> getAllPosts();
@Headers("Content-Type:application/json")
@GET("users/{id}/postsesByUserid")
Call<List<Post>> getUsersPost(@Path("id") int id);
}
但我遇到了这个问题:预期 BEGIN_ARRAY 但在第 1 行第 2 列路径 $=BEGIN_OBJECT 我试着在另一个 class 中制作 Post Pojo,如下所示:
public class PostEntitiy {
private Post post;
public PostEntitiy(Post post) {
this.post = post;
}
public Post getPost() {
return post;
}
public void setPost(Post post) {
this.post = post;
}
}
然后我用 List 仍然遇到同样的问题,我用错了什么?
Expected BEGIN_ARRAY but was BEGIN_OBJECT
您的 JSON 不是列表,它是一个对象:{ ... }
=> 对象,[ ... ]
=> 列表。
编辑
入门指南:
class Embedded {
...
}
class Links {
...
}
class Top {
Embedded _embedded;
Links _links;
}
等等等等。
然后您所有的 List<Post>
都应替换为 Top
。
更改我的 类 的命名以适合您的风格。