Jackson ObjectMapper - 当目标对象具有Map字段时，readValue失败

Question

我想这可能早些时候曾被问过，但找不到我想要的东西。所以就这样了。

我的JSON看起来像这样 -

{
"verticals": [
    {
        "name": "vertical1",
        "icon": "icon1",
        "children": []
    },
    {
        "name": "vertical2",
        "icon": "icon2",
        "children": []
    }
],
"config": {
    "vertical1": [
        {
            "title": "Section1",
            "icon": "icon1",
            "prefs": [
                {
                    "type": "type1",
                    "opts": [
                        {
                            "name": "pref_store_key",
                            "value": "filter-prefix-food"
                        }
                    ],
                    "icons": [
                        "icon3",
                        "icon4"
                    ]
                },
                {
                    "type": "type2",
                    "opts": [
                        {
                            "name": "pref_store_key",
                            "value": "filter-prefix-cue"
                        }
                    ],
                    "icons": [
                        "icon5",
                        "icon6"
                    ]
                }
            ]
        }
    ],
    "vertical2": [
        {
            "title": "Section1",
            "icon": "icon1",
            "prefs": [
                {
                    "type": "type1",
                    "opts": [
                        {
                            "name": "pref_store_key",
                            "value": "filter-prefix-food"
                        }
                    ],
                    "icons": [
                        "icon3",
                        "icon4"
                    ]
                },
                {
                    "type": "type2",
                    "opts": [
                        {
                            "name": "pref_store_key",
                            "value": "filter-prefix-cue"
                        }
                    ],
                    "icons": [
                        "icon5",
                        "icon6"
                    ]
                }
            ]
        }
    ]
}

}

我的课程是 -

public class FeatureConfigData {
    private Map<String, List<ItemConfig>> config = null;
    private List<Vertical> verticals = null;

    public List<ItemConfig> getItemConfig(String vertical) {
        if (config == null) {
            return null;
        } else {
            return config.get(vertical);
        }
    }

    public List<Vertical> getVerticals() {
        return verticals;
    }

    public Map<String, List<ItemConfig>> getConfig() {
        return config;
    }

    public void setConfig(Map<String, List<ItemConfig>> config) {
        this.config = config;
    }
}

public class ItemConfig {
    private String title = null;
    private String icon = null;
    private List<Pref> prefs = null;

    public static class Pref {
        private String type = null;
        private List<String> icons = null;
        private List<Opt> opts = null;

        public String getType() { return type; }
        public List<String> getIcons() { return icons; }
        public List<Opt> getOpts() { return opts; }
    }

    public static class Opt {
        private String name;
        private String value;

        public String getName() { return name; }
        public String getValue() { return value; }
    }

    public String getTitle() { return title; }
    public String getIcon() { return icon; }
    public List<Pref> getPrefs() { return prefs; }
}

我用这个 -

反序列化json字符串

objectMapper.configure(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES, false)
                    .enableDefaultTyping(ObjectMapper.DefaultTyping.NON_FINAL);
FeatureConfigData config = objectMapper.readValue(json, FeatureConfigData.class);

为什么配置字段在我的情况下是空的并且没有填充？我是否需要做其他事情以确保杰克逊知道地图键是“vertical1”，“vertical2”等？

注意，此配置驱动垂直的实际名称/编号。因此，不能替换地图＆gt;使用包含字段vertical1，vertical2等的类。