自定义异常类

不念不忘少年蓝@ 2024-03-27 16:29 89阅读 0赞

/**
     * 同余自定义异常基类
     * <p>message.properties中定义 "消息key=value"</p>
     *
     * @author lQF
     */
    @Data
    @JsonIgnoreProperties({"stackTrace", "localizedMessage", "suppressed"})
    @EqualsAndHashCode(callSuper = true)
    public class TongyuBaseException extends RuntimeException {
        private static final String FILE_NAME = "message";
        public static final int SERVICE_INTERNAL_ERROR_CODE = 500;
        public static final String SERVICE_INTERNAL_ERROR = "service internal error";
        public static final Locale DEFAULT = Locale.getDefault();
    
        /**
         * ResourceBundle bundle = ResourceBundle.getBundle("res", new Locale("zh", "CN"));
         * 其中new Locale(“zh”, “CN”)提供本地化信息，上面这行代码，程序会首先在classpath下寻找my_zh_CN.properties文件，若my_zh_CN.properties文件不存在，则取找my_zh.properties，如还是不存在，继续寻找my.properties,若都找不到就抛出异常。
         */
        private static final ResourceBundle BUNDLE = ResourceBundle.getBundle(FILE_NAME, DEFAULT);
        /**
         * 带{0}占位的消息
         */
        private Object[] placeHolderArgs;
    
        /**
         * 错误码,复用 http status
         */
        @JsonProperty("code")
        private int code;
        /**
         * 配置在message.properties的消息的key
         */
        @JsonIgnore
        private String messageKey;
    
        public TongyuBaseException() {
            super();
            defaultValue();
        }
    
        /**
         * 指定错误码(同事也是消息key),如 "500=service internal error."
         *
         * @param code 错误码(如HTTP STATUS)
         */
        public TongyuBaseException(int code) {
            this.code = code;
            this.messageKey = String.valueOf(code);
        }
    
        public TongyuBaseException(int code, Object... placeHolderArgs) {
            this.code = code;
            this.messageKey = String.valueOf(code);
            this.placeHolderArgs = placeHolderArgs;
        }
    
        /**
         * 指定错误码和消息key
         *
         * @param code       错误码(如HTTP STATUS)
         * @param messageKey 消息key
         */
        public TongyuBaseException(int code, String messageKey) {
            this.code = code;
            this.messageKey = messageKey;
        }
    
        public TongyuBaseException(int code, String messageKey, Object... placeHolderArgs) {
            this.code = code;
            this.messageKey = messageKey;
            this.placeHolderArgs = placeHolderArgs;
        }
    
        private void defaultValue() {
            this.code = SERVICE_INTERNAL_ERROR_CODE;
        }
    
        @JsonProperty("error")
        @Override
        public String getMessage() {
            if (messageKey != null) {
                if (placeHolderArgs == null) {
                    return BUNDLE.containsKey(messageKey) ? BUNDLE.getString(messageKey) : messageKey;
                } else {
                    return messageFormat(placeHolderArgs);
                }
            }
            return super.getMessage();
        }
    
        protected String messageFormat(Object[] args) {
            MessageFormat format = new MessageFormat(BUNDLE.getString(messageKey), DEFAULT);
            return format.format(args);
        }
    }

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[01f1b722e2ad427baef68c3838105bc1.png]: https://image.dandelioncloud.cn/pgy_files/images/2024/03/27/5ffd3ae5efba4bf5942cb021defe84cd.png