我正在尝试将以下Json数组响应解组为RestTemplate中的pojos集合。
[{
"client":{
"id": 6364,
"name": "7Seven7 Insurance Inc",
"email": "donna@7seven7ins.com",
"currency": {"name":"United States of America, Dollars","symbol":"$"},
"address": "941 Elm Ave. #5 ",
"city": "Long Beach",
"province": "CA",
"zip_code": "90813",
"country": "United States",
"full_address_with_comma": "941 Elm Ave. #5, Long Beach, CA, 90813, United States",
"phone": "562-556-4035",
"fax":"562-381-7500",
"custom_field_name": "listed",
"custom_field_value": "false",
"created_at": "2010-07-18T00:08:10Z",
"updated_at": "2010-07-21T11:04:58Z",
}
},
{
"client":{
"id":6365,
"name": "Affinity",
"email":"CGregory@affinitygroup.com",
"address":"2575 Vista Del Mar ",
"city":"Ventura",
"province":"California",
"zip_code":"93001",
"country":"United States",
"full_address_with_comma":"2575 Vista Del Mar, Ventura, California, 93001, United States",
"phone":"(270) 901-2913",
"fax":null,
"currency":{"name":"United States of America, Dollars","symbol":"$"},
"custom_field_name":null,
"custom_field_value":null
"created_at":"2010-07-18T00:08:10Z",
"updated_at":"2010-07-18T00:08:10Z",
}
}]
我创建了一个相应的Java Pojo类
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;
}
}
我正在使用RestTemplate，但我有一组具有空属性值的客户端。
Client[] clients= restTemplate.getForObject(requestUrl, Client[].class);
答案 0 :(得分：7)
您的大部分POJO字段都是String类型，但您的JSON的值不带双引号（""）。您的JSON应如下有效：
[
{
"client": {
"id": "6364",
"name": "7Seven7 Insurance Inc",
"email": "donna@7seven7ins.com",
"currency": {
"name": "United States of America, Dollars",
"symbol": "$"
},
"address": "941 Elm Ave. #5 ",
"city": "Long Beach",
"province": "CA",
"zip_code": "90813",
"country": "United States",
"full_address_with_comma": "941 Elm Ave. #5, Long Beach, CA, 90813, United States",
"phone": "562-556-4035",
"fax": "562-381-7500",
"custom_field_name": "listed",
"custom_field_value": "false",
"created_at": "2010-07-18T00:08:10Z",
"updated_at": "2010-07-21T11:04:58Z"
}
},
{
"client": {
"id": "6365",
"name": "Affinity",
"email": "CGregory@affinitygroup.com",
"address": "2575 Vista Del Mar ",
"city": "Ventura",
"province": "California",
"zip_code": "93001",
"country": "United States",
"full_address_with_comma": "2575 Vista Del Mar, Ventura, California, 93001, United States",
"phone": "(270) 901-2913",
"fax": "null",
"currency": {
"name": "United States of America, Dollars",
"symbol": "$"
},
"custom_field_name": "null",
"custom_field_value": "null",
"created_at": "2010-07-18T00:08:10Z",
"updated_at": "2010-07-18T00:08:10Z"
}
}
]
此外，您的JSON有一个email字段，但您的Client POJO没有email字段，而您在POJO中声明的currency字段不是{{1它是一个有两个字段的对象，所以你的String POJO应该是：
Client使用新的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;
}
}
对象：
Currency另一方面，您正在尝试反序列化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;
}
}
个对象的数组，但您的JSON是一个对象数组，其中每个对象都包含一个Client对象，因此您需要将其包装：
Client然后您可以使用public class Cliente {
private Client client;
public Client getClient() {
return client;
}
public void setClient(Client client) {
this.client = client;
}
}
或restTemplate反序列化您的JSON。
使用ObjectMapper：
restTemplate Cliente[] clients= restTemplate.getForObject(requestUrl, Cliente[].class);
（杰克逊的ObjectMapper完全相同，它使用genericMessageConverter如下）：
ObjectMapper另一件事是，如果您的JSON字段在JSON和POJO中具有相同的名称，则不需要在POJO中使用Cliente[] clientes= mapper.readValue(jsonStr, Cliente[].class);
注释。