Jackson 试图将json反序列化为类型对象列表

我试图使用Jackson反序列化对象的属性，该对象是类型化对象的列表 . 当我尝试这样做时，我得到以下错误

无法实例化类型的值[map type;来自JSON String的类java.util.HashMap，[simple type，class java.lang.String] - > [simple type，class java.lang.String]];没有单字符串构造函数/工厂方法

到目前为止，我有以下但它似乎没有工作 .

Terms.class

@JsonDeserialize(as=JsonMapDeserializer)
private List<ObjectA> results = null;   //ommitted getter and setters

我的Deserializer类如下 .

public class JsonMapDeserializer extends JsonDeserializer<List<ObjectA>> {

List<ObjectA> retMap = new ArrayList<ObjectA>();

TypeReference<HashMap<String,String>[]>  typeRef = new TypeReference<HashMap<String,String>[]>() {};

@Override
public List<ObjectA> deserialize(JsonParser parser, DeserializationContext ctx)
        throws IOException, JsonProcessingException {

    ObjectMapper mapper = new ObjectMapper(); 
    //read the json string into the map
    HashMap<String, String>[] maps = mapper.readValue(parser, typeRef); 
    if(maps != null) {
        for(HashMap<String, String> map : maps) {               
            ObjectA result = new ObjectA("id", map.get("id"));
            retMap.add(result);
        }
    }

    return retMap;
}

}

我正在使用简单的模块添加反序列化器，如下所示

ObjectMapper mapper = new ObjectMapper();
        SimpleModule module = new SimpleModule("safety", Version.unknownVersion());
        module.addDeserializer(List.class, new JsonMapDeserializer());
        mapper.registerModule(module);

我最终尝试去串化的JSON字符串如下所示

"SearchTerms":{"results":[{id":"1010","checked":"true"}] // there are other fields I have just omitted them

当我运行代码反序列化时，我得到以下堆栈跟踪

org.codehaus.jackson.map.JsonMappingException: Can not instantiate value of type [map type; class java.util.HashMap, [simple type, class java.lang.String] -> [simple type, class java.lang.String]] from JSON String; no single-String constructor/factory method (through reference chain: com.model.search["searchTerm1"])
at org.codehaus.jackson.map.deser.std.StdValueInstantiator._createFromStringFallbacks(StdValueInstantiator.java:379)
at org.codehaus.jackson.map.deser.std.StdValueInstantiator.createFromString(StdValueInstantiator.java:268)
at org.codehaus.jackson.map.deser.std.MapDeserializer.deserialize(MapDeserializer.java:244)
at org.codehaus.jackson.map.deser.std.MapDeserializer.deserialize(MapDeserializer.java:33)
at org.codehaus.jackson.map.deser.std.ObjectArrayDeserializer.deserialize(ObjectArrayDeserializer.java:104)
at org.codehaus.jackson.map.deser.std.ObjectArrayDeserializer.deserialize(ObjectArrayDeserializer.java:18)
at org.codehaus.jackson.map.ObjectMapper._readValue(ObjectMapper.java:2695)
at org.codehaus.jackson.map.ObjectMapper.readValue(ObjectMapper.java:1294)
at com.az.rd.ke.json.JsonColumnMapDeserializer.deserialize(JsonColumnMapDeserializer.java:41)
at com.az.rd.ke.json.JsonColumnMapDeserializer.deserialize(JsonColumnMapDeserializer.java:27)
at org.codehaus.jackson.map.deser.SettableBeanProperty.deserialize(SettableBeanProperty.java:299)
at org.codehaus.jackson.map.deser.SettableBeanProperty$MethodProperty.deserializeAndSet(SettableBeanProperty.java:414)
at org.codehaus.jackson.map.deser.BeanDeserializer.

从查看堆栈跟踪和调试，因为我的模块已设置如下

module.addDeserializer(List.class, new JsonMapDeserializer());

当反序列化它似乎一旦它到达我的对象中的第一个属性是一个列表就抱怨，因为它抱怨的 searchTerm1 只是一个字符串列表 .

任何人都可以建议我如何反序列化类型对象列表，或者如何正确添加反序列化器 . 如果我将 adddeserializer 方法更改为

module.addDeserializer(List<ObjectA>.class, new JsonMapDeserializer());

它有编译器问题，因为反序列化器类被输入 List<ObjectA> .