[alibaba/fastjson]JSON字段顺序影响解析结果，导致异常

String data = "{\"categoryId\":\"95251ca6dca34ae0be20b567ee59258c\",\"offset\":0,\"limit\":10,\"startTime\":\"2018-09-26T16:00:00.000Z\",\"endTime\":\"2018-10-21T16:00:00.000Z\"}";
        System.out.println(JSON.parseObject(data, CsChatVuiQueryDto.class, Feature.AllowISO8601DateFormat));

        data = "{\"categoryId\":\"95251ca6dca34ae0be20b567ee59258c\",\"limit\":10,\"offset\":0,\"startTime\":\"2018-09-26T16:00:00.000Z\",\"endTime\":\"2018-10-21T16:00:00.000Z\"}";
        System.out.println(JSON.parseObject(data, CsChatVuiQueryDto.class, Feature.AllowISO8601DateFormat));

如上面的代码，第一个json是可以解析成功的，第二个却报异常，不同之处在于offset和limit的顺序，按理来说，不应该有顺序区分的。

执行异常结果如下：

Exception in thread "main" com.alibaba.fastjson.JSONException: syntax error, expect {, actual iso8601, pos 0, fastjson-version 1.2.38
    at com.alibaba.fastjson.parser.deserializer.JavaBeanDeserializer.deserialze(JavaBeanDeserializer.java:450)
    at com.alibaba.fastjson.parser.deserializer.JavaBeanDeserializer.parseRest(JavaBeanDeserializer.java:1231)
    at com.alibaba.fastjson.parser.deserializer.FastjsonASMDeserializer_1_CsChatVuiQueryDto.deserialze(Unknown Source)
    at com.alibaba.fastjson.parser.deserializer.JavaBeanDeserializer.deserialze(JavaBeanDeserializer.java:270)
    at com.alibaba.fastjson.parser.DefaultJSONParser.parseObject(DefaultJSONParser.java:626)
    at com.alibaba.fastjson.JSON.parseObject(JSON.java:348)
    at com.alibaba.fastjson.JSON.parseObject(JSON.java:252)

Bean：

@Getter
@Setter
@ToString
public class CsChatVuiQueryDto extends CsPageDto {

    /**
     * 分类ID
     */
    private String categoryId;

    /**
     * 问题
     */
    private String question;

    /**
     * 回答
     */
    private String answer;

    /**
     * 开始时间
     */
    private Date startTime;

    /**
     * 结束时间
     */
    private Date endTime;
}

@Setter
@ToString
public class CsPageDto {

    private static final int DEFAULT_OFFSET = 0;

    private static final int DEFAULT_LIMIT = 10;

    /**
     * 偏移量
     */
    private Integer offset;

    /**
     * 限制数目
     */
    private Integer limit;

    public Integer getOffset() {
        return Optional.ofNullable(offset).orElse(DEFAULT_OFFSET);
    }

    public Integer getLimit() {
        return Optional.ofNullable(limit).orElse(DEFAULT_LIMIT);
    }
}