I'm having a list data from database. Now, i need to make a json array that each object is a group of data and having the same created date.
Is there any way to do this as simple as posible?.
Example:
Product entity:
class Product {
private Long id;
private String name;
private Date createdDate;
}
Data after get from database:
List<Product> products = new ArrayList<Product>();
products = daoProduct.getProducts();
for(Product product : products){
logger.info("{} : {} - {}", product.id, product.name, product.createdDate)
}
- result:
1 : bread - 10-Jun-2019
2 : apple - 11-April-2019
3 : banana - 12-July-2019
4 : milk - 10-Jun-2019
5 : cocacola - 11-April-2019
6 : pepsi - 12-July-2019
7 : coffee - 10-Jun-2019
Expected: I want to make a response object with data like this
class ProductRest{
private Date createdDate;
private int count;
private List<Product> listProduct;
}
and the response will be like this
[
{
"createdDate":"10-Jun-2019",
"count":3
"listProduct":[
{"id":1,"name":"bread","createdDate":"10-Jun-2019"},
{"id":4,"name":"milk ","createdDate":"10-Jun-2019"} ,
{"id":7,"name":"coffee ","createdDate":"10-Jun-2019"}
]
},
{
"createdDate":"11-April-2019",
"count":2
"listProduct":[
{"id":2,"name":"apple","createdDate":"11-April-2019"},
{"id":5,"name":"cocacola","createdDate":"11-April-2019"}
]
},
{
"createdDate":"12-July-2019",
"count":2
"listProduct":[
{"id":3,"name":"banana","createdDate":"12-July-2019"},
{"id":6,"name":"pepsi","createdDate":"12-July-2019"}
]
}
]
Please help me do the java coding step to make expected result. Thanks!
