Retrofit2 - 预期 BEGIN_ARRAY 但 BEGIN_OBJECT 使用 Call<List<JSONObject>>
Retrofit2 - Expected BEGIN_ARRAY but was BEGIN_OBJECT using Call<List<JSONObject>>
我在 Android 应用程序中使用 Retrofit2 来获取 JSON 对象，但是我不断收到一条错误消息，指出 Expected BEGIN_ARRAY but was BEGIN_OBJECT 我确实这样做了不明白为什么。
JSON:
{
"_id":{
"$oid":"59dfdcd94e835e0ed07101b3"
},
"campaign_id":"62400",
"version":1,
"sections":[
{
"next_section":"next",
"patch_number":"",
"patch_ext":"",
"elements":[
{
"element":"greeting",
"components":{
"paragraph":{
"content":"Hello. Thank you for calling, how may I help you?"
}
},
"guid":"0cd1d183-0568-4506-b368-5422d9c42875"
},
{
"element":"notes",
"components":{
"paragraph":{
"content":"You're taking general messages from the caller."
}
},
"guid":"9924dd7b-db50-433e-a5a0-c4faae134cea"
},
{
"element":"script",
"components":{
"paragraph":{
"content":"Please allow me to take a message and we will return your call as soon as possible. May I have your first and last name please?"
}
},
"guid":"fca34acd-e128-4737-836a-43c2e4725924"
},
{
"element":"custom-fullname",
"components":{
"label":{
"content":""
},
"first_name":{
"name":"3[custom-fullname][first_name]",
"label":"First",
"type":"text",
"value":"Amani",
"required":"",
"integration_mapping":""
},
"last_name":{
"name":"3[custom-fullname][last_name]",
"label":"Last",
"type":"text",
"value":"Swann",
"required":"",
"integration_mapping":""
},
"help_text":{
"content":""
},
"wf_mapping":"",
"visibility":{
"text":true,
"email":true,
"pager":true,
"fax":true
}
},
"guid":"0767aae7-032f-4204-9d4e-ec19e3151719"
},
{
"element":"custom-phone",
"components":{
"label":{
"content":"Phone Number"
},
"phone":{
"name":"4[custom-phone][phone]",
"type":"text",
"value":"(954) 535-3634",
"required":"false",
"integration_mapping":""
},
"phone_ext":{
"name":"4[custom-phone][phone_ext]",
"type":"text",
"value":""
},
"input_format":{
"name":"4[custom-phone][phone_format]",
"type":"hidden",
"value":"standard"
},
"help_text":{
"content":"Make sure you get caller's phone so we can call them back."
},
"wf_mapping":"",
"visibility":{
"text":true,
"email":true,
"pager":true,
"fax":true
}
},
"guid":"900a6a99-a149-468d-bc9f-a287027b5b50"
},
{
"element":"custom-message",
"components":{
"label":{
"content":"Message"
},
"message":{
"name":"5[custom-message][message]",
"type":"text",
"value":"Rhrwth3rht3r . ",
"required":"",
"integration_mapping":""
},
"help_text":{
"content":""
},
"wf_mapping":"",
"visibility":{
"text":true,
"email":true,
"pager":false,
"fax":true
}
},
"guid":"b7ab0012-97f9-4bce-a42c-e78de69151cf"
},
{
"element":"script",
"components":{
"paragraph":{
"content":"Thank you so much for calling. Have a wonderful day."
}
},
"guid":"d4a869be-f31e-475c-822a-aab0b57a5152"
}
],
"faqs":[
]
},
{
"next_section":"3",
"patch_number":"",
"patch_ext":"",
"elements":[
{
"element":"greeting",
"components":{
"paragraph":{
"content":"Good morning."
}
},
"guid":"63c53b11-261b-472c-a4e4-347e16e38d6b"
},
{
"element":"notes",
"components":{
"paragraph":{
"content":""
}
},
"guid":"d3cd55c9-8bd5-4f5b-b047-66b9c7c81a02"
}
],
"faqs":[
]
},
{
"next_section":"next",
"patch_number":"",
"patch_ext":"",
"elements":[
{
"element":"greeting",
"components":{
"paragraph":{
"content":""
}
},
"guid":"7a19830c-7b48-48bd-8a13-c19a42a9313b"
}
],
"faqs":[
]
},
{
"next_section":"next",
"patch_number":"",
"patch_ext":"",
"elements":[
{
"element":"greeting",
"components":{
"paragraph":{
"content":""
}
},
"guid":"a3e92b5c-ce94-4847-af1d-4b33b1372a8b"
},
{
"element":"checkbox",
"components":{
"label":{
"content":"First Label"
},
"checkboxlist":[
{
"input":{
"value":"value_0",
"id":"multiple_choices_answer_0"
},
"label":{
"content":"Choice 1"
}
}
],
"multiple_choices_answer":{
"value":[
"value_0"
],
"name":"1[checkbox][multiple_choices_answer]",
"required":"",
"integration_mapping":""
},
"help_text":{
"content":""
},
"wf_mapping":"",
"visibility":{
"text":true,
"email":true,
"pager":false,
"fax":true
}
},
"guid":"9ddd7d35-1720-4270-84af-94d765e69b95"
},
{
"element":"checkbox",
"components":{
"label":{
"content":"Second Label"
},
"checkboxlist":[
{
"input":{
"value":"value_0",
"id":"multiple_choices_answer_0"
},
"label":{
"content":"Choice 2"
}
}
],
"multiple_choices_answer":{
"value":[
"value_0"
],
"name":"2[checkbox][multiple_choices_answer]",
"required":"",
"integration_mapping":""
},
"help_text":{
"content":""
},
"wf_mapping":"",
"visibility":{
"text":true,
"email":true,
"pager":false,
"fax":true
}
},
"guid":"610cd6aa-b152-43f1-810a-b136340104b4"
}
],
"faqs":[
]
},
{
"next_section":"next",
"patch_number":"",
"patch_ext":"",
"elements":[
{
"element":"greeting",
"components":{
"paragraph":{
"content":""
}
},
"guid":"96682825-e59a-4f27-ade4-835e95ae6bde"
},
{
"element":"sms-attachments",
"components":{
"label":{
"content":"Cell Number to send SMS"
},
"phone":{
"name":"1[sms-attachments][phone]",
"type":"text",
"value":"",
"required":"false",
"integration_mapping":"",
"expire_mms_link":"24"
},
"help_text_1":{
"content":"Ask the caller for their mobile number. Inform them that you will be sending them a text message and request that they reply to message with images."
},
"help_text_2":{
"content":"Ask the caller for their mobile number. Inform them that you will be sending them a text message and request that they reply to message with images."
},
"sms_content":"Please reply to this text message and attach images.",
"wf_mapping":"",
"visibility":{
"text":true,
"email":true,
"pager":false,
"fax":true
}
},
"guid":"7d497fa2-dd8c-42c0-ae00-00db51be9fdb"
}
],
"faqs":[
]
},
{
"next_section":"next",
"patch_number":"",
"patch_ext":"",
"elements":[
{
"element":"greeting",
"components":{
"paragraph":{
"content":""
}
},
"guid":"fc612986-b3e8-4b87-b56f-4c0288c8f4a7"
},
{
"element":"custom-date-time",
"components":{
"label":{
"content":"Schedule Date & Time"
},
"help_text":{
"content":""
},
"event_closed":{
"content":"The event has been closed. Please contact main number for more information."
},
"sched_type":{
"value":"business_hours"
},
"business_hours":{
"mon":{
"from":"09:00 am",
"to":"05:00 pm"
},
"tue":{
"from":"09:00 am",
"to":"05:00 pm"
},
"wed":{
"from":"09:00 am",
"to":"05:00 pm"
},
"thu":{
"from":"09:00 am",
"to":"05:00 pm"
},
"fri":{
"from":"09:00 am",
"to":"05:00 pm"
},
"sat":{
"from":"closed",
"to":"closed"
},
"sun":{
"from":"closed",
"to":"closed"
}
},
"event_hours":[
{
"date":"10\/12\/2017",
"from":"08:00 am",
"to":"06:00 pm"
}
],
"time_interval":{
"number":"15",
"measure":"minute"
},
"date":{
"name":"1[custom-date-time][date]",
"value":"",
"required":"",
"integration_mapping":""
},
"day":{
"name":"1[custom-date-time][day]",
"value":"",
"required":""
},
"month":{
"name":"1[custom-date-time][month]",
"value":"",
"required":""
},
"year":{
"name":"1[custom-date-time][year]",
"value":"",
"required":""
},
"time":{
"name":"1[custom-date-time][time]",
"value":"",
"required":"",
"integration_mapping":""
},
"dateTime":{
"name":"1[custom-date-time][dateTime]",
"value":"",
"integration_mapping":""
},
"visibility":{
"text":true,
"email":true,
"pager":false,
"fax":true
}
},
"guid":"5424f1e1-4523-4ce4-acb4-a3637e81eac7"
}
],
"faqs":[
]
}
],
"feedback":{
"comment":"",
"call_ended":{
"reason":"",
"comment":""
}
},
"date_created":1507843214,
"last_modified":1507843316.804022,
"status":"published",
"published":true,
"_callsid":"CAa29521566c53e32d1ca865e841fa1a8e",
"visited_arr":[
0
]
}
...我准备接收一个 JSON对象：
改造：
@GET("android/v7/get_script")
Call<List<JSONObject>> getCallDetails(@Query("call_id") String callId, @Query("call_status") String callStatus, @Query("build") Boolean preBuild);
和：
private void getCallDetails() {
mSelectedCall.build = false;
App.api.getCallDetails(mSelectedCall.idx, mSelectedCall.caller_status, mSelectedCall.build).enqueue(new API.SimpleCallback<List<JSONObject>>() {
@Override
public void onResponse(List<JSONObject> elements) {
...
}
@Override
public void onFailure(Call<List<JSONObject>> call, Throwable t) {
super.onFailure(call, t);
}
});
}
但是我收到一条错误消息：
预期 BEGIN_ARRAY 但 BEGIN_OBJECT 在第 1 行第 2 列路径 $
...我不知道为什么。
如有任何建议，我们将不胜感激！
原因是你上面贴的JSON是一个对象，不是数组。
您可以将 JSON 更改为数组或接收对象 而不是数组。
您可以在下面的 link 中检查 JSON 是一个对象：
Click here
写得不错！
如错误所述，您需要此行中的列表
Call<List<JSONObject>> getCallDetails
您应该删除一个列表对象，因为您的 json 不是以 [ ] 开头的。
Call<JSONObject> getCallDetails
之前的答案可能是正确的，但如果您确实需要一个 JSONObject 列表，您的 api 应该 return 类似于：
[{ },...]
我在 Android 应用程序中使用 Retrofit2 来获取 JSON 对象，但是我不断收到一条错误消息，指出 Expected BEGIN_ARRAY but was BEGIN_OBJECT 我确实这样做了不明白为什么。
JSON:
{
"_id":{
"$oid":"59dfdcd94e835e0ed07101b3"
},
"campaign_id":"62400",
"version":1,
"sections":[
{
"next_section":"next",
"patch_number":"",
"patch_ext":"",
"elements":[
{
"element":"greeting",
"components":{
"paragraph":{
"content":"Hello. Thank you for calling, how may I help you?"
}
},
"guid":"0cd1d183-0568-4506-b368-5422d9c42875"
},
{
"element":"notes",
"components":{
"paragraph":{
"content":"You're taking general messages from the caller."
}
},
"guid":"9924dd7b-db50-433e-a5a0-c4faae134cea"
},
{
"element":"script",
"components":{
"paragraph":{
"content":"Please allow me to take a message and we will return your call as soon as possible. May I have your first and last name please?"
}
},
"guid":"fca34acd-e128-4737-836a-43c2e4725924"
},
{
"element":"custom-fullname",
"components":{
"label":{
"content":""
},
"first_name":{
"name":"3[custom-fullname][first_name]",
"label":"First",
"type":"text",
"value":"Amani",
"required":"",
"integration_mapping":""
},
"last_name":{
"name":"3[custom-fullname][last_name]",
"label":"Last",
"type":"text",
"value":"Swann",
"required":"",
"integration_mapping":""
},
"help_text":{
"content":""
},
"wf_mapping":"",
"visibility":{
"text":true,
"email":true,
"pager":true,
"fax":true
}
},
"guid":"0767aae7-032f-4204-9d4e-ec19e3151719"
},
{
"element":"custom-phone",
"components":{
"label":{
"content":"Phone Number"
},
"phone":{
"name":"4[custom-phone][phone]",
"type":"text",
"value":"(954) 535-3634",
"required":"false",
"integration_mapping":""
},
"phone_ext":{
"name":"4[custom-phone][phone_ext]",
"type":"text",
"value":""
},
"input_format":{
"name":"4[custom-phone][phone_format]",
"type":"hidden",
"value":"standard"
},
"help_text":{
"content":"Make sure you get caller's phone so we can call them back."
},
"wf_mapping":"",
"visibility":{
"text":true,
"email":true,
"pager":true,
"fax":true
}
},
"guid":"900a6a99-a149-468d-bc9f-a287027b5b50"
},
{
"element":"custom-message",
"components":{
"label":{
"content":"Message"
},
"message":{
"name":"5[custom-message][message]",
"type":"text",
"value":"Rhrwth3rht3r . ",
"required":"",
"integration_mapping":""
},
"help_text":{
"content":""
},
"wf_mapping":"",
"visibility":{
"text":true,
"email":true,
"pager":false,
"fax":true
}
},
"guid":"b7ab0012-97f9-4bce-a42c-e78de69151cf"
},
{
"element":"script",
"components":{
"paragraph":{
"content":"Thank you so much for calling. Have a wonderful day."
}
},
"guid":"d4a869be-f31e-475c-822a-aab0b57a5152"
}
],
"faqs":[
]
},
{
"next_section":"3",
"patch_number":"",
"patch_ext":"",
"elements":[
{
"element":"greeting",
"components":{
"paragraph":{
"content":"Good morning."
}
},
"guid":"63c53b11-261b-472c-a4e4-347e16e38d6b"
},
{
"element":"notes",
"components":{
"paragraph":{
"content":""
}
},
"guid":"d3cd55c9-8bd5-4f5b-b047-66b9c7c81a02"
}
],
"faqs":[
]
},
{
"next_section":"next",
"patch_number":"",
"patch_ext":"",
"elements":[
{
"element":"greeting",
"components":{
"paragraph":{
"content":""
}
},
"guid":"7a19830c-7b48-48bd-8a13-c19a42a9313b"
}
],
"faqs":[
]
},
{
"next_section":"next",
"patch_number":"",
"patch_ext":"",
"elements":[
{
"element":"greeting",
"components":{
"paragraph":{
"content":""
}
},
"guid":"a3e92b5c-ce94-4847-af1d-4b33b1372a8b"
},
{
"element":"checkbox",
"components":{
"label":{
"content":"First Label"
},
"checkboxlist":[
{
"input":{
"value":"value_0",
"id":"multiple_choices_answer_0"
},
"label":{
"content":"Choice 1"
}
}
],
"multiple_choices_answer":{
"value":[
"value_0"
],
"name":"1[checkbox][multiple_choices_answer]",
"required":"",
"integration_mapping":""
},
"help_text":{
"content":""
},
"wf_mapping":"",
"visibility":{
"text":true,
"email":true,
"pager":false,
"fax":true
}
},
"guid":"9ddd7d35-1720-4270-84af-94d765e69b95"
},
{
"element":"checkbox",
"components":{
"label":{
"content":"Second Label"
},
"checkboxlist":[
{
"input":{
"value":"value_0",
"id":"multiple_choices_answer_0"
},
"label":{
"content":"Choice 2"
}
}
],
"multiple_choices_answer":{
"value":[
"value_0"
],
"name":"2[checkbox][multiple_choices_answer]",
"required":"",
"integration_mapping":""
},
"help_text":{
"content":""
},
"wf_mapping":"",
"visibility":{
"text":true,
"email":true,
"pager":false,
"fax":true
}
},
"guid":"610cd6aa-b152-43f1-810a-b136340104b4"
}
],
"faqs":[
]
},
{
"next_section":"next",
"patch_number":"",
"patch_ext":"",
"elements":[
{
"element":"greeting",
"components":{
"paragraph":{
"content":""
}
},
"guid":"96682825-e59a-4f27-ade4-835e95ae6bde"
},
{
"element":"sms-attachments",
"components":{
"label":{
"content":"Cell Number to send SMS"
},
"phone":{
"name":"1[sms-attachments][phone]",
"type":"text",
"value":"",
"required":"false",
"integration_mapping":"",
"expire_mms_link":"24"
},
"help_text_1":{
"content":"Ask the caller for their mobile number. Inform them that you will be sending them a text message and request that they reply to message with images."
},
"help_text_2":{
"content":"Ask the caller for their mobile number. Inform them that you will be sending them a text message and request that they reply to message with images."
},
"sms_content":"Please reply to this text message and attach images.",
"wf_mapping":"",
"visibility":{
"text":true,
"email":true,
"pager":false,
"fax":true
}
},
"guid":"7d497fa2-dd8c-42c0-ae00-00db51be9fdb"
}
],
"faqs":[
]
},
{
"next_section":"next",
"patch_number":"",
"patch_ext":"",
"elements":[
{
"element":"greeting",
"components":{
"paragraph":{
"content":""
}
},
"guid":"fc612986-b3e8-4b87-b56f-4c0288c8f4a7"
},
{
"element":"custom-date-time",
"components":{
"label":{
"content":"Schedule Date & Time"
},
"help_text":{
"content":""
},
"event_closed":{
"content":"The event has been closed. Please contact main number for more information."
},
"sched_type":{
"value":"business_hours"
},
"business_hours":{
"mon":{
"from":"09:00 am",
"to":"05:00 pm"
},
"tue":{
"from":"09:00 am",
"to":"05:00 pm"
},
"wed":{
"from":"09:00 am",
"to":"05:00 pm"
},
"thu":{
"from":"09:00 am",
"to":"05:00 pm"
},
"fri":{
"from":"09:00 am",
"to":"05:00 pm"
},
"sat":{
"from":"closed",
"to":"closed"
},
"sun":{
"from":"closed",
"to":"closed"
}
},
"event_hours":[
{
"date":"10\/12\/2017",
"from":"08:00 am",
"to":"06:00 pm"
}
],
"time_interval":{
"number":"15",
"measure":"minute"
},
"date":{
"name":"1[custom-date-time][date]",
"value":"",
"required":"",
"integration_mapping":""
},
"day":{
"name":"1[custom-date-time][day]",
"value":"",
"required":""
},
"month":{
"name":"1[custom-date-time][month]",
"value":"",
"required":""
},
"year":{
"name":"1[custom-date-time][year]",
"value":"",
"required":""
},
"time":{
"name":"1[custom-date-time][time]",
"value":"",
"required":"",
"integration_mapping":""
},
"dateTime":{
"name":"1[custom-date-time][dateTime]",
"value":"",
"integration_mapping":""
},
"visibility":{
"text":true,
"email":true,
"pager":false,
"fax":true
}
},
"guid":"5424f1e1-4523-4ce4-acb4-a3637e81eac7"
}
],
"faqs":[
]
}
],
"feedback":{
"comment":"",
"call_ended":{
"reason":"",
"comment":""
}
},
"date_created":1507843214,
"last_modified":1507843316.804022,
"status":"published",
"published":true,
"_callsid":"CAa29521566c53e32d1ca865e841fa1a8e",
"visited_arr":[
0
]
}
...我准备接收一个 JSON对象：
改造：
@GET("android/v7/get_script")
Call<List<JSONObject>> getCallDetails(@Query("call_id") String callId, @Query("call_status") String callStatus, @Query("build") Boolean preBuild);
和：
private void getCallDetails() {
mSelectedCall.build = false;
App.api.getCallDetails(mSelectedCall.idx, mSelectedCall.caller_status, mSelectedCall.build).enqueue(new API.SimpleCallback<List<JSONObject>>() {
@Override
public void onResponse(List<JSONObject> elements) {
...
}
@Override
public void onFailure(Call<List<JSONObject>> call, Throwable t) {
super.onFailure(call, t);
}
});
}
但是我收到一条错误消息：
预期 BEGIN_ARRAY 但 BEGIN_OBJECT 在第 1 行第 2 列路径 $
...我不知道为什么。
如有任何建议，我们将不胜感激！
原因是你上面贴的JSON是一个对象，不是数组。
您可以将 JSON 更改为数组或接收对象 而不是数组。
您可以在下面的 link 中检查 JSON 是一个对象： Click here
写得不错！
如错误所述，您需要此行中的列表
Call<List<JSONObject>> getCallDetails
您应该删除一个列表对象，因为您的 json 不是以 [ ] 开头的。
Call<JSONObject> getCallDetails
之前的答案可能是正确的，但如果您确实需要一个 JSONObject 列表，您的 api 应该 return 类似于：
[{ },...]