Spring Boot Maven and MySQL Error Handling - mysql

Question

I have the following Spring Boot MySQL query:
visitorrepository.save(newvisitor)
Upon execution of this MySQL query, I want to return a success JSON or failure JSON in the following format:
Success State:
{
"success": true,
"message": "Some Helpful Message",
"data": { } //This would be the newvisitor JSON that includes the primary key (id)
}
Failure State:
{
"success": false,
"message": "Some Helpful Message",
"error_code": "404", // This should be whatever error number was returned
"data": { } //This would be the newvisitor JSON that does not include the primary key (id)
}
In angular the response is captured as follows
this.http.post('http://localhost:8080/v1/api/post', this.visitor.value).toPromise().then((response:any) => {
console.log(response);
})
post.java
#CrossOrigin(origins = "http://localhost:4200")
#RestController
public class post {
#Autowired
visitorrepository visitorrepository;
#PostMapping("/v1/api/post")
public void insert(#Valid #RequestBody newvisitor newvisitor) {
try {
visitorrepository.save(newvisitor);
return // Success State JSON
} catch () {
return // Error State JSON
}
}
}
newvisitor.java
#Getter
#Setter
#Entity
#Table(name = "visitors")
public class newvisitor {
#Id
#GeneratedValue
private Long id;
#Size(min=1, max=250)
#NotBlank
private String firstname;
#NotBlank
private String lastname;
#NotBlank
private String month;
#NotBlank
private String day;
#NotBlank
private String year;
#NotBlank
private String socialsecuritynumber;
#NotBlank
private String street1;
private String street2;
#NotBlank
private String city;
#NotBlank
private String state;
#NotBlank
private String zip;
#NotBlank
private String phone;
#Email
#NotBlank
private String email;
public newvisitor(){
super();
}
public newvisitor(String firstname, String lastname, String month, String day, String year, String socialsecuritynumber, String street1, String street2, String city, String state, String zip, String phone, String email) {
super();
this.firstname = firstname;
this.lastname = lastname;
this.month = month;
this.day = day;
this.year = year;
this.socialsecuritynumber = socialsecuritynumber;
this.street1 = street1;
this.street2 = street2;
this.city = city;
this.state = state;
this.zip = zip;
this.phone = phone;
this.email = email;
}
}
visitorrepository.java
#Repository
public interface visitorrepository extends CrudRepository<newvisitor, Long> {
}
The thought is to catch everything from MySQL database not connecting, to invalid data entry, to duplicate records, bascially anything that prevented the initial query visitorrepository.save(newvisitor) from working, and return this to angular as a JSON. I feel like ResponseEntity or RestControllerAdvice might be the answer, just not sure best way to implement if this is accurate.

Answer 1

You already have the answer.
I feel like ResponseEntity or RestControllerAdvice might be the answer
You only create a dto response with your format. then put it in ResponseEntity in case error or not.