全局异常拦截器（拦截所有的控制器）、自定义异常

import com.xkr.lsos.common.Result;
import com.xkr.lsos.common.ReturnCode;
import lombok.extern.slf4j.Slf4j;
import org.apache.shiro.authc.AuthenticationException;
import org.springframework.core.annotation.Order;
import org.springframework.dao.DuplicateKeyException;
import org.springframework.http.HttpStatus;
import org.springframework.validation.FieldError;
import org.springframework.web.bind.MethodArgumentNotValidException;
import org.springframework.web.bind.annotation.ExceptionHandler;
import org.springframework.web.bind.annotation.ResponseStatus;
import org.springframework.web.bind.annotation.RestControllerAdvice;

import javax.validation.ValidationException;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

/**
 * @Description: 全局的的异常拦截器（拦截所有的控制器）
 */
@RestControllerAdvice
@Order(-1)
@Slf4j
public class GlobalExceptionHandler {

    /**
     * 所有异常信息
     *
     * @param exception
     * @return
     * @throws Exception
     */
    @ResponseStatus(HttpStatus.BAD_REQUEST)
    @ExceptionHandler(Exception.class)
    public Result<?> exceptionHandler(Exception exception) {
        log.error("exceptionHandle [{}]", exception.toString());
        if (exception instanceof LoginToException){
            exception.printStackTrace();
            return Result.error(((LoginToException) exception).getMessageCode(), exception.getMessage());
        }
        exception.printStackTrace();
        return Result.error(ReturnCode.OTHER_ERROR.getCode(), exception.getMessage());
    }

    @ExceptionHandler(DuplicateKeyException.class)
    public Result<?> handleDuplicateKeyException(DuplicateKeyException e) {
        log.error(e.getMessage(), e);
        return Result.error("数据库中已存在该记录");
    }

    @ExceptionHandler(AuthenticationException.class)
    public Result<?> authenticationExceptionException(DuplicateKeyException e) {
        log.error(e.getMessage(), e);
        return Result.error("Token已失效");
    }


    @ExceptionHandler(MethodArgumentNotValidException.class)
    public Result<?> methodArgumentNotValidException(MethodArgumentNotValidException e) {
        log.error(e.getMessage(), e);
        List<Map<String, Object>> list = new ArrayList<>();
        List<FieldError> errorList = e.getBindingResult().getFieldErrors();
        errorList.forEach(fieldError -> {
            Map<String, Object> map = new HashMap<>();
            map.put(fieldError.getField(), fieldError.getDefaultMessage());
            list.add(map);
        });
        return Result.error(HttpStatus.EXPECTATION_FAILED.value(), "参数异常", list);
    }

    //自定义校验报错
    @ExceptionHandler(ValidationException.class)
    public Result<?> validationException(ValidationException e) {
        log.error(e.getMessage(), e);
        return Result.error("参数异常");
    }

}

/**
 * @Description: 自定义异常
 **/
public class DefinedException extends RuntimeException {

    private static final long serialVersionUID = -420925980366951255L;
    /**
     * 异常编号
     */
    private final int messageCode;

    /**
     * 对messageCode 异常信息进行补充说明
     */
    private final String detailMessage;

    public DefinedException(int messageCode, String message) {
        super(message);
        this.messageCode = messageCode;
        this.detailMessage = message;
    }

    public DefinedException(String message) {
        super(message);
        this.messageCode = 5000;
        this.detailMessage = message;
    }

    public int getMessageCode() {
        return messageCode;
    }

    public String getDetailMessage() {
        return detailMessage;
    }
}

/**
 * @Description: 登录相关异常
 **/
public class LoginToException extends RuntimeException {
    private static final long serialVersionUID = -2688474821224087715L;
    /**
     * 异常编号
     */
    private final int messageCode;

    /**
     * 对messageCode 异常信息进行补充说明
     */
    private final String detailMessage;

    public LoginToException(int messageCode, String message) {
        super(message);
        this.messageCode = messageCode;
        this.detailMessage = message;
    }

    public int getMessageCode() {
        return messageCode;
    }

    public String getDetailMessage() {
        return detailMessage;
    }
}

使用案例：