Java JSON到POJO,整数作为数组属性键名
我有下面的json,它有一个product数组,每个数组都有product_id。product id是数字。当我在网上寻找pojo类时,我得到的类名是以数字开头的,这是不允许的Java JSON到POJO,整数作为数组属性键名,java,json,pojo,Java,Json,Pojo,我有下面的json,它有一个product数组,每个数组都有product_id。product id是数字。当我在网上寻找pojo类时,我得到的类名是以数字开头的,这是不允许的 { "_id:" : "1234AG567", "products" : { "1234":{ "product_name" : "xyz", "product_type" : "abc"
{
"_id:" : "1234AG567",
"products" : {
"1234":{
"product_name" : "xyz",
"product_type" : "abc"
},
"3456":{
"product_name" : "zzz",
"product_type" : "def"
}
}
}
Below are the Pojo classes I am getting
public class MyPojo
{
private Products products;
public Products getProducts ()
{
return products;
}
public void setProducts (Products products)
{
this.products = products;
}
@Override
public String toString()
{
return "ClassPojo [products = "+products+"]";
}
}
我已经使用了转换
欢迎提供有关如何为此JSON创建pojo的任何帮助。提前感谢。您可以使用Map存储产品,并将其包装到另一个类中以存储整个json。例如,产品类别如下所示:
class Product {
@JsonProperty("product_name")
private String productName;
@JsonProperty("product_type")
private String productType;
public String getProductName() {
return productName;
}
public void setProductName(String productName) {
this.productName = productName;
}
public String getProductType() {
return productType;
}
public void setProductType(String productType) {
this.productType = productType;
}
}
class ProductList{
@JsonProperty("_id")
private String id;
private Map<String, Product> products;
public String getId() {
return id;
}
public void setId(String id) {
this.id = id;
}
public Map<String, Product> getProducts() {
return products;
}
public void setProducts(Map<String, Product> products) {
this.products = products;
}
}
{
"products": [
{
"id": "1234",
"product_name": "xyz",
"product_type": "abc"
},
{
"id": "3456",
"product_name": "zzz",
"product_type": "def"
}]
}
包装器类如下所示:
class Product {
@JsonProperty("product_name")
private String productName;
@JsonProperty("product_type")
private String productType;
public String getProductName() {
return productName;
}
public void setProductName(String productName) {
this.productName = productName;
}
public String getProductType() {
return productType;
}
public void setProductType(String productType) {
this.productType = productType;
}
}
class ProductList{
@JsonProperty("_id")
private String id;
private Map<String, Product> products;
public String getId() {
return id;
}
public void setId(String id) {
this.id = id;
}
public Map<String, Product> getProducts() {
return products;
}
public void setProducts(Map<String, Product> products) {
this.products = products;
}
}
{
"products": [
{
"id": "1234",
"product_name": "xyz",
"product_type": "abc"
},
{
"id": "3456",
"product_name": "zzz",
"product_type": "def"
}]
}
请注意,您的json中有一个输入错误。Id字段应该是_Id而不是_Id:如果这是实际的字段名,那么您可以将JsonProperty注释更改为_Id:
是Jackson的文档。JSON是有效的,但是您将无法创建POJO来表示它。正如您已经看到的,您不能创建以数字开头的类,而且您也不想这样做,因为它们不会给您提供任何意义 我猜products是一个Product数组,这个数字是一个ID或其他什么。JSON应该如下所示:
class Product {
@JsonProperty("product_name")
private String productName;
@JsonProperty("product_type")
private String productType;
public String getProductName() {
return productName;
}
public void setProductName(String productName) {
this.productName = productName;
}
public String getProductType() {
return productType;
}
public void setProductType(String productType) {
this.productType = productType;
}
}
class ProductList{
@JsonProperty("_id")
private String id;
private Map<String, Product> products;
public String getId() {
return id;
}
public void setId(String id) {
this.id = id;
}
public Map<String, Product> getProducts() {
return products;
}
public void setProducts(Map<String, Product> products) {
this.products = products;
}
}
{
"products": [
{
"id": "1234",
"product_name": "xyz",
"product_type": "abc"
},
{
"id": "3456",
"product_name": "zzz",
"product_type": "def"
}]
}
它将反序列化为包含
private List<Product> products;
谢谢。是的,输入错误应该是_id。我将尝试您的上述解决方案并让您知道。谢谢@Darshan Mehta。答案是什么