Picsart v24.6版本的 MD5 值为：21a61631d94e54da68d2ad9268b8b9d9

以下内容为反编译后的 DefaultClaims.java 源代码，内容仅作参考

package io.jsonwebtoken.impl;

import io.jsonwebtoken.Claims;
import io.jsonwebtoken.RequiredTypeException;
import java.util.Date;
import java.util.Map;
public class DefaultClaims extends JwtMap implements Claims {
    private static final String CONVERSION_ERROR_MSG = "Cannot convert existing claim value of type '%s' to desired type '%s'. JJWT only converts simple String, Date, Long, Integer, Short and Byte types automatically. Anything more complex is expected to be already converted to your desired type by the JSON Deserializer implementation. You may specify a custom Deserializer for a JwtParser with the desired conversion configuration via the JwtParserBuilder.deserializeJsonWith() method. See https://github.com/jwtk/jjwt#custom-json-processor for more information. If using Jackson, you can specify custom claim POJO types as described in https://github.com/jwtk/jjwt#json-jackson-custom-types";

    public DefaultClaims() {
    }

    public DefaultClaims(Map<String, ?> map) {
        super(map);
    }

    private <T> T castClaimValue(Object obj, Class<T> cls) {
        if (obj instanceof Integer) {
            int intValue = ((Integer) obj).intValue();
            if (cls == Long.class) {
                obj = Long.valueOf(intValue);
            } else if (cls == Short.class && -32768 <= intValue && intValue <= 32767) {
                obj = Short.valueOf((short) intValue);
            } else if (cls == Byte.class && -128 <= intValue && intValue <= 127) {
                obj = Byte.valueOf((byte) intValue);
            }
        }
        if (cls.isInstance(obj)) {
            return cls.cast(obj);
        }
        throw new RequiredTypeException(String.format(CONVERSION_ERROR_MSG, obj.getClass(), cls));
    }

    private static boolean isSpecDate(String str) {
        return Claims.EXPIRATION.equals(str) || Claims.ISSUED_AT.equals(str) || Claims.NOT_BEFORE.equals(str);
    }

    @Override
    public <T> T get(String str, Class<T> cls) {
        Object obj = get(str);
        if (obj == null) {
            return null;
        }
        if (Date.class.equals(cls)) {
            obj = isSpecDate(str) ? JwtMap.toSpecDate(obj, str) : JwtMap.toDate(obj, str);
        }
        return (T) castClaimValue(obj, cls);
    }

    @Override
    public String getAudience() {
        return getString(Claims.AUDIENCE);
    }

    @Override
    public Date getExpiration() {
        return (Date) get(Claims.EXPIRATION, Date.class);
    }

    @Override
    public String getId() {
        return getString(Claims.ID);
    }

    @Override
    public Date getIssuedAt() {
        return (Date) get(Claims.ISSUED_AT, Date.class);
    }

    @Override
    public String getIssuer() {
        return getString(Claims.ISSUER);
    }

    @Override
    public Date getNotBefore() {
        return (Date) get(Claims.NOT_BEFORE, Date.class);
    }

    @Override
    public String getSubject() {
        return getString(Claims.SUBJECT);
    }

    @Override
    public Object put(String str, Object obj) {
        return ((obj instanceof Date) && isSpecDate(str)) ? setDateAsSeconds(str, (Date) obj) : super.put(str, obj);
    }

    @Override
    public Claims setAudience(String str) {
        setValue(Claims.AUDIENCE, str);
        return this;
    }

    @Override
    public Claims setExpiration(Date date) {
        setDateAsSeconds(Claims.EXPIRATION, date);
        return this;
    }

    @Override
    public Claims setId(String str) {
        setValue(Claims.ID, str);
        return this;
    }

    @Override
    public Claims setIssuedAt(Date date) {
        setDateAsSeconds(Claims.ISSUED_AT, date);
        return this;
    }

    @Override
    public Claims setIssuer(String str) {
        setValue(Claims.ISSUER, str);
        return this;
    }

    @Override
    public Claims setNotBefore(Date date) {
        setDateAsSeconds(Claims.NOT_BEFORE, date);
        return this;
    }

    @Override
    public Claims setSubject(String str) {
        setValue(Claims.SUBJECT, str);
        return this;
    }
}