一、声明一个通用接口
/*** 枚举类通用接口* @author Administrator** @param <T>*/
public interface CommonEnum<T> {Object getCode();}
二、声明枚举类
public enum EMessageCode implements CommonEnum<EMessageCode>{/* 全局通用异常 */RESOURCE_NOT_EXIST("00000","资源不存在"), PARAM_ERROR("00001","参数错误"), NUKNOW_ERROR("99999","未知异常"),/* 订单相关异常 */ORDER_CREATE_FAIL("10000","下单失败"),/* 商品相关异常 */PRODUCT_STOCK_NOT_ENOUGH("20000","库存不足"),;private String code;private String message;private EMessageCode(String code, String message) {this.code = code;this.message = message;}public String getCode() {return code;}public void setCode(String code) {this.code = code;}public String getMessage() {return message;}public void setMessage(String message) {this.message = message;}
}
三、声明一个通用的枚举工具类
public class EnumUtils {/*** 根据code获取枚举类* @param <T>* @param code* @param enumClass* @return*/public static <T extends CommonEnum> T getEnumByCode(Object code, Class<T> enumClass) {for (T each : enumClass.getEnumConstants()) {if (each.getCode().equals(code)) {return each;}}return null;}}