使用Jackson将json字符串转换为泛型映射

public class GenericMap<K, V> {
    private Map<K, V> data;

    public Map<K, V> getData() {
        return data;
    }

    public void setData(Map<K, V> data) {
        this.data = data;
    }
}

import com.fasterxml.jackson.core.type.TypeReference;
import com.fasterxml.jackson.databind.ObjectMapper;

public class JsonToGenericMapConverter {
    public static <K, V> GenericMap<K, V> convert(String jsonString) throws IOException {
        ObjectMapper objectMapper = new ObjectMapper();
        TypeReference<GenericMap<K, V>> typeReference = new TypeReference<GenericMap<K, V>>() {};
        return objectMapper.readValue(jsonString, typeReference);
    }
}

public class Main {
    public static void main(String[] args) {
        String jsonString = "{\"data\":{\"key1\":\"value1\",\"key2\":\"value2\"}}";
        try {
            GenericMap<String, String> genericMap = JsonToGenericMapConverter.convert(jsonString);
            Map<String, String> data = genericMap.getData();
            System.out.println(data.get("key1")); // 输出：value1
            System.out.println(data.get("key2")); // 输出：value2
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
}