com.mycompany.springboot.handler.MethodArgumentNotValidExceptionHandler.java Source code

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Here is the source code for com.mycompany.springboot.handler.MethodArgumentNotValidExceptionHandler.java

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package com.mycompany.springboot.handler;

import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import org.springframework.http.HttpStatus;
import org.springframework.validation.FieldError;
import org.springframework.web.bind.MethodArgumentNotValidException;
import org.springframework.web.bind.annotation.ControllerAdvice;
import org.springframework.web.bind.annotation.ExceptionHandler;
import org.springframework.web.bind.annotation.ResponseBody;
import org.springframework.web.bind.annotation.ResponseStatus;

/**
 *
 * @author josiamu
 */

@ControllerAdvice
public class MethodArgumentNotValidExceptionHandler {
    @ResponseBody
    @ResponseStatus(HttpStatus.BAD_REQUEST)
    @ExceptionHandler(MethodArgumentNotValidException.class)
    public Map<String, Object> handler(MethodArgumentNotValidException ex) {
        //        Map<String, Object> map = new HashMap<>();
        //        List<Object> list = new ArrayList<>();
        //
        //        for (FieldError error : ex.getBindingResult().getFieldErrors()) {
        //            Map<String, Object> mapError = new HashMap<>();
        //            mapError.put("field", error.getField());
        //            mapError.put("message", error.getDefaultMessage());
        //            list.add(mapError);
        //        }
        //        map.put("errors", list);
        //        return map;

        //        Map<String,Object> map = new HashMap<>();
        //        map.put("error_id","1");
        //        map.put("error", ex.getBindingResult().getFieldError().getDefaultMessage());
        //        return map;

        Map<String, Object> map = new HashMap<>();
        List<Object> list = new ArrayList<>();

        ex.getBindingResult().getFieldErrors().stream().map((error) -> {
            Map<String, Object> mapError = new HashMap<>();
            mapError.put("field", error.getField());
            mapError.put("message", error.getDefaultMessage());
            return mapError;
        }).forEach((mapError) -> {
            list.add(mapError);
        });

        map.put("errors", list);
        return map;
    }
}