新增自定义异常处理

hsweb-web-core/src/main/java/org/hsweb/web/exception/ExceptionHolderConfig.java

@@ -6,7 +6,6 @@ import org.springframework.context.annotation.Bean;
 import org.springframework.context.annotation.Configuration;
 import org.springframework.web.context.request.RequestAttributes;
 
-import java.util.HashMap;
 import java.util.Map;
 
 /**