spring-boot-controller-advice-aspect-handle-exception

1- Log exception occurs at service layer to the database log table from @AfterThrowing advice.
2- Show a meaningful error message to the client by using @RestControllerAdvice.

Run with

Run: spring-boot-controller-advice-aspect-handle-exception > mvnw.cmd spring-boot:run

Tech Stack

Java 11
H2 Database Engine
spring boot
spring data jpa
spring web
spring aspects
hibernate
logback
maven
junit

API OPERATIONS

Save customer sucessfully to database

Method : HTTP.POST
URL : http://localhost:8080/customer/save

Request :

{ 
  "name":"name1",
  "age":1,
  "addresses":[
                {"streetName":"software","city":"ankara","country":"TR"}
              ]
}

Response :

HTTP response code 200

{
    "id": 1,
    "name": "name1",
    "age": 1,
    "addresses": [
        {
            "id": 1,
            "streetName": "software",
            "city": "ankara",
            "country": "TR"
        }
    ]
}

Create exception and trigger @AfterThrowing aspect. Insert log message into log table.

Method : HTTP.POST
URL : http://localhost:8080/customer/save

Request :

{
    "name": null,
    "age": null
}

Response :

HTTP response code 500

{
    "timestamp": "2021-04-13T19:29:07.112+00:00",
    "message": "not-null property references a null or transient value : com.company.customerinfo.model.Customer.age; nested exception is org.hibernate.PropertyValueException:   not-null property references a null or transient value : com.company.customerinfo.model.Customer.age",
    "details": "uri=/customer/save"
}

List entries in log table.

Method : HTTP.GET
URL : http://localhost:8080/log/list

Input Test Data : No input, just fire the request.

Request :

{
}

Response :

HTTP response code 200

[
    {
        "id": 1,
        "message": "org.hibernate.PropertyValueException: not-null property references a null or transient value : com.company.customerinfo.model.Customer.age"
    }
]