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1、全局异常处理类
@RestControllerAdvice public class ExceptionControllerAdvice { private static
final Logger logger = LoggerFactory.getLogger(ExceptionControllerAdvice.class);
@ExceptionHandler(SQLException.class) public BackResult<String>
sqlExceptionHandler(SQLException e) { logger.error("sql exception", e); return
new BackResult<>(ExceptionEnum.SQL_ERROR.getCode(),
ExceptionEnum.SQL_ERROR.getMsg()); } @ExceptionHandler(BaseException.class)
public BackResult<String> baseExceptionHandler(BaseException e) {
logger.error("base exception", e); return new BackResult<>(e.getCode(),
e.getMsg()); } @ExceptionHandler(Exception.class) public BackResult<String>
unCaughtException(Exception e) { logger.error("unCatch exception", e); return
new BackResult<>(ExceptionEnum.UNKNOWN_ERROR.getCode(), e.getMessage()); } }
@RestControllerAdvice可以全局捕获spring mvc抛的异常，
@ExceptionHandler进行指定不同异常的不同处理方式。
2、mybatisplus java字段和数据库字段自动映射
在yml文件中设置该属性，该配置项就是指将带有下划线的表字段映射为驼峰格式的实体类属性。
3、配置文件部分配置读得出来，部分配置读不出来
本地使用dev的配置文件时一切正常，能够完成mybatisplus java字段和数据库字段自动映射，
prod相同的配置就是不能使用，但是prod配置文件下面的ticket能够读取，反复部署好多次都不能
成功，也不是什么缩进问题。
解决方案：可能是线上用的就不是这个配置文件，可能使用的是在服务器上conf下的配置文件，也可能使用的是在nacos的配置文件（我的项目）！！！！！！！！！！！！！！！！！！！！
