java - 错误 RetroFit 开始数组对象 .IllegalStateException
问题描述
我是新手,GSON
我收到了错误
Wrongjava.lang.IllegalStateException:预期
BEGIN_OBJECT
但在第 2 行第 14 列路径 $.messages 处为 BEGIN_ARRAY。
我遵循了一个教程,但似乎得到了正确的结果。
如果您需要任何其他帮助,请告诉我。
这是JSON
文件的一小部分。
{
"messages": [
{
"id": 0,
"userId": 3,
"content": "iusto eius quod necessitatibus culpa ea, odit magnam ut saepe sed non qui\ntempora atque nihil\naccusamus illum doloribus illo dolor\neligendi repudiandae odit magni similique sed cum maiores"
},
{
"id": 1,
"userId": 7,
"content": "beatae enim quia vel"
},
{
"id": 2,
"userId": 10,
"content": "at nam consequatur ea labore ea harum",
"attachments": [
{
"id": "3577cf23-56db-4ce8-92a0-0c1abc5f9402",
"title": "accusamus beatae ad facilis cum similique qui sunt",
"url": "http://placehold.it/600/92c952",
"thumbnailUrl": "http://placehold.it/150/92c952"
},
{
"id": "660bac80-7473-48bc-99ba-a7aed36a743a",
"title": "reprehenderit est deserunt velit ipsam",
"url": "http://placehold.it/600/771796",
"thumbnailUrl": "http://placehold.it/150/771796"
},
{
"id": "3fba42bc-33e8-4451-8433-2c48ec303e30",
"title": "officia porro iure quia iusto qui ipsa ut modi",
"url": "http://placehold.it/600/24f355",
"thumbnailUrl": "http://placehold.it/150/24f355"
}
]
},
这是我的代码。
消息.java
package com.example.rjrod.legendchat.Model;
import com.google.gson.annotations.Expose;
import com.google.gson.annotations.SerializedName;
import java.util.ArrayList;
public class Message {
@SerializedName("id")
@Expose
private int id;
@SerializedName("userdId")
@Expose
private int userId;
@SerializedName("content")
@Expose
private String content;
@SerializedName("attachments")
@Expose
private ArrayList<Attachments> attachments;
public int getId() {
return id;
}
public void setId(int id) {
this.id = id;
}
public int getUserId() {
return userId;
}
public void setUserId(int userId) {
this.userId = userId;
}
public String getContent() {
return content;
}
public void setContent(String content) {
this.content = content;
}
public ArrayList<Attachments> getAttachments() {
return attachments;
}
public void setAttachments(ArrayList<Attachments> attachments) {
this.attachments = attachments;
}
@Override
public String toString() {
return "Message{" +
"id='" + id + '\'' +
", userId='" + userId + '\'' +
", content='" + content + '\'' +
", attachments=" + attachments +
'}';
}
}
附件.java
import com.google.gson.annotations.Expose;
import com.google.gson.annotations.SerializedName;
public class Attachments {
@SerializedName("id")
@Expose
private String id;
@SerializedName("title")
@Expose
private String title;
@SerializedName("url")
@Expose
private String url;
@SerializedName("thumbnailUrl")
@Expose
private String thumbnailUrl;
public String getId() {
return id;
}
public void setId(String id) {
this.id = id;
}
public String getTitle() {
return title;
}
public void setTitle(String title) {
this.title = title;
}
public String getUrl() {
return url;
}
public void setUrl(String url) {
this.url = url;
}
public String getThumbnailUrl() {
return thumbnailUrl;
}
public void setThumbnailUrl(String thumbnailUrl) {
this.thumbnailUrl = thumbnailUrl;
}
@Override
public String toString() {
return "Attachments{" +
"id='" + id + '\'' +
", title='" + title + '\'' +
", url='" + url + '\'' +
", thumbnailUrl='" + thumbnailUrl + '\'' +
'}';
}
}
主.java
public class MainActivity extends AppCompatActivity {
private static final String TAG = "MainActivity";
private static final String BASE_URL = "https://private-96848-7egend.apiary-mock.com/";
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
Button btGetData = findViewById(R.id.btGetData);
Retrofit retrofit = new Retrofit.Builder()
.baseUrl(BASE_URL)
.addConverterFactory(GsonConverterFactory.create())
.build();
LegendAPI legendAPI = retrofit.create(LegendAPI.class);
Call<Feed> call = legendAPI.getStuff();
call.enqueue(new Callback<Feed>() {
@Override
public void onResponse(Call<Feed> call, Response<Feed> response) {
Log.d(TAG, "onResponse: Server Response: " + response.toString());
Log.d(TAG, "onResponse: Received information " + response.body().toString());
ArrayList<Attachments> attachmentsList=response.body().getMessage().getAttachments();
for (int i=0;i< attachmentsList.size();i++){
Log.d(TAG, "onResponse: \n" + "id:"+ attachmentsList.get(i).getId()+ "\n" +
"title"+ attachmentsList.get(i).getTitle()+ "\n" +
"url"+ attachmentsList.get(i).getUrl()+ "\n" +
"thumbnailUrl"+ attachmentsList.get(i).getThumbnailUrl()+ "\n" + "--------------------------------------\n\n");
}
}
@Override
public void onFailure(Call<Feed> call, Throwable t) {
Log.e(TAG, "on Failure: Something went Wrong" + t.getMessage());
Toast.makeText(MainActivity.this, "Something went Wrong", Toast.LENGTH_SHORT).show();
}
});
}
}
喂养
import com.google.gson.annotations.Expose;
import com.google.gson.annotations.SerializedName;
public class Feed {
@SerializedName("messages")
@Expose
private Message messages;
@SerializedName("users")
@Expose
private Users user;
public Message getMessage() {
return messages;
}
public void setMessage(Message messages) {
this.messages = messages;
}
public Users getUser() {
return user;
}
public void setUser(Users user) {
this.user = user;
}
@Override
public String toString() {
return "Feed{" +
"messages=" + messages +
", user=" + user +
'}';
}
}
你能帮助这个新手吗?
解决方案
在您的 json 对象中,从最后一行删除“,”并添加 ]}。由于 json 格式不正确,您会收到此错误。进行更改并检查“在线 json 编辑器”
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