1.aop

启动类加@EnableAspectJAutoProxy

自定义注解，在实体类中使用表示被脱敏字段

建立aop切面类

可能这里gpt会建议你用@Pointcut("execution(public * com.xx.aop..*.get*(..))")这种方式拦截，这种我试了，拦截不住。猜测在mvc返回的时候，已经不被aop拦住了，除非手动调用。并且get方式还要user成为bean，不值当。直接拦截controller包吧。

2.Jackson

序列化类

import com.fasterxml.jackson.core.JsonGenerator;
import com.fasterxml.jackson.databind.BeanProperty;
import com.fasterxml.jackson.databind.JsonSerializer;
import com.fasterxml.jackson.databind.SerializerProvider;
import com.fasterxml.jackson.databind.ser.ContextualSerializer;

import java.io.IOException;

public class DesensitizeSerializer extends JsonSerializer<String> implements ContextualSerializer {


    private SensitiveType type;

    private int startInclude;

    private int endExclude;

    public DesensitizeSerializer() {
        this.type = SensitiveType.COMMON;
    }


    public DesensitizeSerializer(SensitiveType type) {
        this.type = type;
    }


    @Override
    public void serialize(String value, JsonGenerator gen, SerializerProvider serializers) throws IOException, IOException {
                switch (type) {
            case COMMON:
                gen.writeString(MsgDesensitizedUtil.commonStr(value));
                break;
            case ID_CARD:
                gen.writeString(MsgDesensitizedUtil.idCardNum(value));
                break;
            case PHONE_NUMBER:
                gen.writeString(MsgDesensitizedUtil.mobilePhone(value));
                break;
            case EMAIL:
                gen.writeString(MsgDesensitizedUtil.email(value));
                break;
            default:
                throw new RuntimeException("未知脱敏类型");
        }
    }


    @Override
    public JsonSerializer<?> createContextual(SerializerProvider prov, BeanProperty property) {
        if (property != null) {
            SensitiveData annotation = property.getAnnotation(SensitiveData.class);
            if (annotation != null) {
                this.type = annotation.value();
            }
        }
        return this;
    }

}

针对多种类型的脱敏枚举类

在实体中添加就行了，不需要把自定义序列化加载到SimpleModule里