java全局异常处理

/**
 * 异常处理器
 *
 * @author Mark [email protected]
 */
@RestControllerAdvice
public class RRExceptionHandler {
	private Logger logger = LoggerFactory.getLogger(getClass());

	/**
	 * 处理自定义异常
	 */
	@ExceptionHandler(RRException.class)
	public R handleRRException(RRException e){
		R r = new R();
		r.put("code", e.getCode());
		r.put("msg", e.getMessage());

		return r;
	}

	@ExceptionHandler(NoHandlerFoundException.class)
	public R handlerNoFoundException(Exception e) {
		logger.error(e.getMessage(), e);
		return R.error(404, "路径不存在，请检查路径是否正确");
	}

	@ExceptionHandler(DuplicateKeyException.class)
	public R handleDuplicateKeyException(DuplicateKeyException e){
		logger.error(e.getMessage(), e);
		return R.error("数据库中已存在该记录");
	}

	@ExceptionHandler(AuthorizationException.class)
	public R handleAuthorizationException(AuthorizationException e){
		logger.error(e.getMessage(), e);
		return R.error("没有权限，请联系管理员授权");
	}

	@ExceptionHandler(Exception.class)
	public R handleException(Exception e){
		logger.error(e.getMessage(), e);
		return R.error();
	}
}

创建自定义异常

/**
 * 自定义异常
 *
 * @author Mark [email protected]
 */
public class RRException extends RuntimeException {
	private static final long serialVersionUID = 1L;
	
    private String msg;
    private int code = 500;
    
    public RRException(String msg) {
		super(msg);
		this.msg = msg;
	}
	
	public RRException(String msg, Throwable e) {
		super(msg, e);
		this.msg = msg;
	}
	
	public RRException(String msg, int code) {
		super(msg);
		this.msg = msg;
		this.code = code;
	}
	
	public RRException(String msg, int code, Throwable e) {
		super(msg, e);
		this.msg = msg;
		this.code = code;
	}

	public String getMsg() {
		return msg;
	}

	public void setMsg(String msg) {
		this.msg = msg;
	}

	public int getCode() {
		return code;
	}

	public void setCode(int code) {
		this.code = code;
	}
	
	
}

BizCodeEnume 错误枚举类：

public enum BizCodeEnume {
    UNKNOW_EXCEPTION(10000, "系统未知异常"),
    VALID_EXCEPTION(10001, "参数格式验证失败"),
    PRODUCT_UP_EXCEPTION(11000, "商品上架异常"),
    SMS_CODE_EXCEPTION(10002,"验证码获取频率太高，请稍后再试"),
    TO_MANY_REQUEST(10002,"请求流量过大，请稍后再试"),
    USER_EXIST_EXCEPTION(15001,"存在相同的用户"),
    PHONE_EXIST_EXCEPTION(15002,"存在相同的手机号"),
    NO_STOCK_EXCEPTION(21000,"商品库存不足"),
    LOGINACCT_PASSWORD_EXCEPTION(15003,"账号或密码错误");

    private int code;
    private String msg;

    BizCodeEnume(int code, String msg) {
        this.code = code;
        this.msg = msg;
    }

    public int getCode() {
        return code;
    }

    public String getMsg() {
        return msg;
    }
}