Body annotation value is ignored

[bruno-lopes]

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Task List

• [X] Steps to reproduce provided
• [ ] Stacktrace (if present) provided
• [ ] Example that reproduces the problem uploaded to Github
• [X] Full description of the issue provided (see below)

Steps to Reproduce

1. Create a class Course this way:

   
   import lombok.Data;

import javax.persistence.Column; import javax.persistence.Entity; import javax.persistence.Id; import javax.persistence.Table;

@Entity @Table(name = "course") @Data public class Course {

@Id
Long id;
String level;
String name;

}

2. Create a controller method that consumes JSON, and has a body parameter that is a reference from a nested JSON attribute:
```java
@Post(value = "/propg/alunoRegular", consumes = MediaType.APPLICATION_JSON, produces = MediaType.APPLICATION_JSON)
    public HttpResponse<Alumn> createAlumn(@Valid @Body("course") Course curse)

3. Send the following JSON:

{
    "name": "Test Name",
    "course": {
        "id": 4815
    }
}

4. Debug and watch the value of the course variable.

Expected Behaviour

Course variable has to be instantiated with id value equal to 4815 and null in name attribute.

Actual Behaviour

Course variable has is instantiated with id value null and name attribute as "Test Name". If a create another parameter, like this:

@Post(value = "/propg/alunoRegular", consumes = MediaType.APPLICATION_JSON, produces = MediaType.APPLICATION_JSON)
    public HttpResponse<Alumn> createAlumn(@Valid @Body("course") Course curse, @Valid @Body DataFromCourse dataFromCourse)

And the following class

@Data
public class DataFromCourse {
    Course course;
}

The variable dataFromCourse is instantiated as expected, with the course attribute ìnstantiated with id 4815. So, the value of the Body Annotation is ignored, different from the class documentation suggests:

    /**
     * @return A Key or qualifier within the body. For example a reference to a nested JSON attribute
     */
    @AliasFor(annotation = Bindable.class, member = "value")
    String value() default ""

Environment Information

• Operating System: Linux Mint
• Micronaut Version: 1.2.0
• JDK Version: openjdk version "1.8.0_172" OpenJDK Runtime Environment (Zulu 8.30.0.1-linux64) (build 1.8.0_172-b01) OpenJDK 64-Bit Server VM (Zulu 8.30.0.1-linux64) (build 25.172-b01, mixed mode)

Example Application

Very simple example.

[jameskleeh]

Just FYI the desired behavior could be achieved by simply omitting the body annotation

[bruno-lopes]

Just FYI the desired behavior could be achieved by simply omitting the body annotation

Very thanks. I'll try it.