[alibaba/fastjson]Object中包含Map，序列化后反序列化，只序列化了部分。

public class RunParams implements Serializable{

    private static final long serialVersionUID = 1415784566744392853L;

    public static final String PARAM_FILE = "runparam.json";

    private Map<String, List<ParamEntry>> params;

    public RunParams() {
        params = new HashMap<>();
    }

    public Map<String, List<ParamEntry>> getParams() {
        return params;
    }

    public void setParams(Map<String, List<ParamEntry>> params) {
        this.params = params;
    }
}

public class ParamEntry implements Serializable{

    private static final long serialVersionUID = 6592166907730539963L;

    private String varName;

    private String value;

    private String desc;

    private String attribute;

    private String resName;
}

序列化后反序列化，params中key有值，value对应的List，ParamEntry字段全部为空值。