具体报错如下: 

问题描述:Jackson解析嵌套类问题 

调用接口返回json格式的数据,使用Jackson解析参数转换成对象:

@Data
@JsonIgnoreProperties(ignoreUnknown = true)
public class PixlIdDto implements Serializable {

    @JsonIgnore
    private static final long serialVersionUID = -5776690969534186379L;

    @JsonProperty("models")
    private List<Models> models;

    @Data
    @JsonIgnoreProperties(ignoreUnknown = true)
    public class Models implements Serializable {

        @JsonIgnore
        private static final long serialVersionUID = 9189184337502771734L;

        @JsonProperty("medias")
        private List<Medias> medias;

        @JsonProperty("code")
        private String code;
        @Data
        @JsonIgnoreProperties(ignoreUnknown = true)
        public class Medias implements Serializable {

            @JsonIgnore
            private static final long serialVersionUID = 136346277159168673L;

            @JsonProperty("mediaZones")
            private List<MediaZones> mediaZones;
            @Data
            @JsonIgnoreProperties(ignoreUnknown = true)
            public class MediaZones implements Serializable {

                @JsonIgnore
                private static final long serialVersionUID = 7683892920280290206L;

                @JsonProperty("medias")
                private List<MediasInner> medias;

                @JsonProperty("name")
                private String name;
                @Data
                @JsonIgnoreProperties(ignoreUnknown = true)
                public class MediasInner implements Serializable {

                    @JsonIgnore
                    private static final long serialVersionUID = 8653771742539974404L;

                    @JsonProperty("displayOrder")
                    private int displayOrder ;

                    @JsonProperty("pixlId")
                    private String pixlId;
                }
            }
        }
    }
}

问题本质为:内部非静态类无法实例化

你需要做两件事:

  • 给内部类前面加上static
  • 给内部类加上默认构造函数

改过后的内部类像这样:

@Data
@JsonIgnoreProperties(ignoreUnknown = true)
public class PixlIdDto implements Serializable {

    @JsonIgnore
    private static final long serialVersionUID = -5776690969534186379L;

    @JsonProperty("models")
    private List<Models> models;

    @Data
    @JsonIgnoreProperties(ignoreUnknown = true)
    @NoArgsConstructor
    public static class Models implements Serializable {

        @JsonIgnore
        private static final long serialVersionUID = 9189184337502771734L;

        @JsonProperty("medias")
        private List<Medias> medias;

        @JsonProperty("code")
        private String code;

        @Data
        @JsonIgnoreProperties(ignoreUnknown = true)
        @NoArgsConstructor
        public static class Medias implements Serializable {

            @JsonIgnore
            private static final long serialVersionUID = 136346277159168673L;

            @JsonProperty("mediaZones")
            private List<MediaZones> mediaZones;

            @Data
            @JsonIgnoreProperties(ignoreUnknown = true)
            @NoArgsConstructor
            public static class MediaZones implements Serializable {

                @JsonIgnore
                private static final long serialVersionUID = 7683892920280290206L;

                @JsonProperty("medias")
                private List<MediasInner> medias;

                @JsonProperty("name")
                private String name;

                @Data
                @JsonIgnoreProperties(ignoreUnknown = true)
                @NoArgsConstructor
                public static class MediasInner implements Serializable {

                    @JsonIgnore
                    private static final long serialVersionUID = 8653771742539974404L;

                    @JsonProperty("displayOrder")
                    private int displayOrder;

                    @JsonProperty("pixlId")
                    private String pixlId;
                }
            }
        }
    }
}

问题完美解决。


版权声明:本文为weixin_40910372原创文章,遵循 CC 4.0 BY-SA 版权协议,转载请附上原文出处链接和本声明。
原文链接:https://blog.csdn.net/weixin_40910372/article/details/100669444