'Can we generate @JsonFormat on model variable using swagger-generater?

I have a variable in yml file

startDate:
 type:string
 format:date

I'm using swagger-generater to generate java code from yml.

It's generating a startDate variable as below

@JsonProperty("startDate")
private LocalDate startDate = null;

But I need as below

@JsonProperty("startDate")
@JsonFormat(shape = JsonFormat.Shape.STRING, pattern = "yyyy-MM-dd")
private LocalDate startDate = null;

Can someone help me on this?

javaspring-bootswaggerswagger-2.0swagger-codegen


Solution 1:[1]

The problem here is you are trying to serialize a Java 8 LocalDate using @JsonFormat without using right jackson module/dependency. If you have a look the annotation doc, it says;

Common uses include choosing between alternate representations -- for example, whether Date is to be serialized as number (Java timestamp) or String (such as ISO-8601 compatible time value) -- as well as configuring exact details with pattern() property.

https://fasterxml.github.io/jackson-annotations/javadoc/2.8/com/fasterxml/jackson/annotation/JsonFormat.html

There's no proper documentation in the swagger codegen project about how to specify language specific configuration options, I have only seen those config options in the following ticket;

https://github.com/swagger-api/swagger-codegen/issues/7795

As per the that issue, you could force Swagger codegen to use java8 dateLibrary.

Solution 2:[2]

you can try desarialize with this way:

ObjectMapper objectMapper = new ObjectMapper();
DateFormat df = new SimpleDateFormat("dd/MM/yyyy");
objectMapper.setSerializationInclusion(JsonInclude.Include.NON_NULL);
objectMapper.setDateFormat(df);
JSONObject jsonObject=new JSONObject(new Oferta().fechaInicio(new Date()));
String json="";
try{
    json=objectMapper.writeValueAsString(new Oferta().fechaInicio(new Date()).fechaAceptacion("15/554/20"));
    jsonObject=new JSONObject(json);
}catch (Exception e){

}



public class Oferta {
    @JsonProperty("fechaInicio")
    private Date fechaInicio = null;
    @JsonProperty("fechaAceptacion")
    private String fechaAceptacion = null;

}

Sources

This article follows the attribution requirements of Stack Overflow and is licensed under CC BY-SA 3.0.

Source: Stack Overflow

Solution Source
Solution 1
Solution 2 Jhon Larru

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