I'm trying to unmarshal the following Json array response to a collection of pojos in RestTemplate.
[{
"client":{
"id": 6364,
"name": "7Seven7 Insurance Inc",
"email": "[email protected]",
"currency": {"name":"United States of America, Dollars","symbol":"$"},
"address": "941 Elm Ave. #5 ",
"city": "Long Beach",
"province": "CA",
"zip_code": "90813",
"country": "United States",
"full_address_with_comma": "941 Elm Ave. #5, Long Beach, CA, 90813, United States",
"phone": "562-556-4035",
"fax":"562-381-7500",
"custom_field_name": "listed",
"custom_field_value": "false",
"created_at": "2010-07-18T00:08:10Z",
"updated_at": "2010-07-21T11:04:58Z",
}
},
{
"client":{
"id":6365,
"name": "Affinity",
"email":"[email protected]",
"address":"2575 Vista Del Mar ",
"city":"Ventura",
"province":"California",
"zip_code":"93001",
"country":"United States",
"full_address_with_comma":"2575 Vista Del Mar, Ventura, California, 93001, United States",
"phone":"(270) 901-2913",
"fax":null,
"currency":{"name":"United States of America, Dollars","symbol":"$"},
"custom_field_name":null,
"custom_field_value":null
"created_at":"2010-07-18T00:08:10Z",
"updated_at":"2010-07-18T00:08:10Z",
}
}]
I have created a corresponding Java Pojo class
public class Client {
@JsonProperty("id")
private String id;
@JsonProperty("name")
private String name;
@JsonProperty("currency")
private String currency;
@JsonProperty("address")
private String address;
@JsonProperty("city")
private String city;
@JsonProperty("province")
private String province;
@JsonProperty("zip_code")
private String zip_code;
@JsonProperty("country")
private String country;
@JsonProperty("full_address_with_comma")
private String full_address_with_comma;
@JsonProperty("phone")
private String phone;
@JsonProperty("fax")
private String fax;
@JsonProperty("custom_field_name")
private String custom_field_name;
@JsonProperty("custom_field_value")
private String custom_field_value;
@JsonProperty("created_at")
private String created_at;
@JsonProperty("updated_at")
private String updated_at;
public String getId() {
return id;
}
public void setId(String id) {
this.id = id;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public String getCurrency() {
return currency;
}
public void setCurrency(String currency) {
this.currency = currency;
}
public String getAddress() {
return address;
}
public void setAddress(String address) {
this.address = address;
}
public String getCity() {
return city;
}
public void setCity(String city) {
this.city = city;
}
public String getProvince() {
return province;
}
public void setProvince(String province) {
this.province = province;
}
public String getZip_code() {
return zip_code;
}
public void setZip_code(String zip_code) {
this.zip_code = zip_code;
}
public String getCountry() {
return country;
}
public void setCountry(String country) {
this.country = country;
}
public String getFull_address_with_comma() {
return full_address_with_comma;
}
public void setFull_address_with_comma(String full_address_with_comma) {
this.full_address_with_comma = full_address_with_comma;
}
public String getPhone() {
return phone;
}
public void setPhone(String phone) {
this.phone = phone;
}
public String getFax() {
return fax;
}
public void setFax(String fax) {
this.fax = fax;
}
public String getCustom_field_name() {
return custom_field_name;
}
public void setCustom_field_name(String custom_field_name) {
this.custom_field_name = custom_field_name;
}
public String getCustom_field_value() {
return custom_field_value;
}
public void setCustom_field_value(String custom_field_value) {
this.custom_field_value = custom_field_value;
}
public String getCreated_at() {
return created_at;
}
public void setCreated_at(String created_at) {
this.created_at = created_at;
}
public String getUpdated_at() {
return updated_at;
}
public void setUpdated_at(String updated_at) {
this.updated_at = updated_at;
}
}
I'm using RestTemplate, but I have got an array of clients with empty attribute values.
Client[] clients= restTemplate.getForObject(requestUrl, Client[].class);
Most of your POJO fields are of type String but your JSON has values without double quotes (""). Your JSON should be as follows to be valid:
[
{
"client": {
"id": "6364",
"name": "7Seven7 Insurance Inc",
"email": "[email protected]",
"currency": {
"name": "United States of America, Dollars",
"symbol": "$"
},
"address": "941 Elm Ave. #5 ",
"city": "Long Beach",
"province": "CA",
"zip_code": "90813",
"country": "United States",
"full_address_with_comma": "941 Elm Ave. #5, Long Beach, CA, 90813, United States",
"phone": "562-556-4035",
"fax": "562-381-7500",
"custom_field_name": "listed",
"custom_field_value": "false",
"created_at": "2010-07-18T00:08:10Z",
"updated_at": "2010-07-21T11:04:58Z"
}
},
{
"client": {
"id": "6365",
"name": "Affinity",
"email": "[email protected]",
"address": "2575 Vista Del Mar ",
"city": "Ventura",
"province": "California",
"zip_code": "93001",
"country": "United States",
"full_address_with_comma": "2575 Vista Del Mar, Ventura, California, 93001, United States",
"phone": "(270) 901-2913",
"fax": "null",
"currency": {
"name": "United States of America, Dollars",
"symbol": "$"
},
"custom_field_name": "null",
"custom_field_value": "null",
"created_at": "2010-07-18T00:08:10Z",
"updated_at": "2010-07-18T00:08:10Z"
}
}
]
Also, your JSON has an email field but your Client POJO has not email field, and your declared currency field in the POJO is not a String, it's an object with two fields, so your Client POJO should be:
public class Client {
private String id;
private String name;
private String email;
private Currency currency;
private String address;
private String city;
private String province;
private String zip_code;
private String country;
private String full_address_with_comma;
private String phone;
private String fax;
private String custom_field_name;
private String custom_field_value;
private String created_at;
private String updated_at;
public String getId() {
return id;
}
public void setId(String id) {
this.id = id;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public Currency getCurrency() {
return currency;
}
public void setCurrency(Currency currency) {
this.currency = currency;
}
public String getAddress() {
return address;
}
public void setAddress(String address) {
this.address = address;
}
public String getCity() {
return city;
}
public void setCity(String city) {
this.city = city;
}
public String getProvince() {
return province;
}
public void setProvince(String province) {
this.province = province;
}
public String getZip_code() {
return zip_code;
}
public void setZip_code(String zip_code) {
this.zip_code = zip_code;
}
public String getCountry() {
return country;
}
public void setCountry(String country) {
this.country = country;
}
public String getFull_address_with_comma() {
return full_address_with_comma;
}
public void setFull_address_with_comma(String full_address_with_comma) {
this.full_address_with_comma = full_address_with_comma;
}
public String getPhone() {
return phone;
}
public void setPhone(String phone) {
this.phone = phone;
}
public String getFax() {
return fax;
}
public void setFax(String fax) {
this.fax = fax;
}
public String getCustom_field_name() {
return custom_field_name;
}
public void setCustom_field_name(String custom_field_name) {
this.custom_field_name = custom_field_name;
}
public String getCustom_field_value() {
return custom_field_value;
}
public void setCustom_field_value(String custom_field_value) {
this.custom_field_value = custom_field_value;
}
public String getCreated_at() {
return created_at;
}
public void setCreated_at(String created_at) {
this.created_at = created_at;
}
public String getUpdated_at() {
return updated_at;
}
public void setUpdated_at(String updated_at) {
this.updated_at = updated_at;
}
public String getEmail() {
return email;
}
public void setEmail(String email) {
this.email = email;
}
}
with a new Currency object:
public class Currency {
private String name;
private String symbol;
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public String getSymbol() {
return symbol;
}
public void setSymbol(String symbol) {
this.symbol = symbol;
}
}
On the other hand, you are trying to deserialize an array of Client objects, but your JSON is an array of objects where each object contains a Client object, so you need to wrap it:
public class Cliente {
private Client client;
public Client getClient() {
return client;
}
public void setClient(Client client) {
this.client = client;
}
}
and then you could deserialize your JSON with the restTemplate or with an ObjectMapper.
With a restTemplate:
Cliente[] clients= restTemplate.getForObject(requestUrl, Cliente[].class);
With an ObjectMapper (Jackson's genericMessageConverter does exactly the same, it uses an ObjectMapper as follows):
Cliente[] clientes= mapper.readValue(jsonStr, Cliente[].class);
Another thing is, you do not need the @JsonProperty annotations in your POJO if your JSON fields have the same name in the JSON and in the POJO.