全局异常处理（Spring Boot）

    package org.springframework.web.bind.annotation;
    
    import java.lang.annotation.Annotation;
    import java.lang.annotation.Documented;
    import java.lang.annotation.ElementType;
    import java.lang.annotation.Retention;
    import java.lang.annotation.RetentionPolicy;
    import java.lang.annotation.Target;
    
    import org.springframework.core.annotation.AliasFor;
    import org.springframework.stereotype.Component;
    
    @Target(ElementType.TYPE)
    @Retention(RetentionPolicy.RUNTIME)
    @Documented
    @Component
    public @interface C