使用Jackson将多个json键反序列化为一个字段

{
  "key1": "value1",
  "key2": "value2",
  "key3": "value3"
}

public class MyClass {
  private Map<String, String> keyValueMap;

  // Getter and setter methods for keyValueMap
}

import com.fasterxml.jackson.core.JsonParser;
import com.fasterxml.jackson.databind.DeserializationContext;
import com.fasterxml.jackson.databind.JsonDeserializer;

import java.io.IOException;
import java.util.HashMap;
import java.util.Map;

public class MyDeserializer extends JsonDeserializer<Map<String, String>> {
    @Override
    public Map<String, String> deserialize(JsonParser jsonParser, DeserializationContext deserializationContext) throws IOException {
        Map<String, String> keyValueMap = new HashMap<>();
        while (jsonParser.nextToken() != JsonToken.END_OBJECT) {
            String fieldName = jsonParser.getCurrentName();
            jsonParser.nextToken();
            String value = jsonParser.getText();
            keyValueMap.put(fieldName, value);
        }
        return keyValueMap;
    }
}

import com.fasterxml.jackson.databind.annotation.JsonDeserialize;

@JsonDeserialize(using = MyDeserializer.class)
private Map<String, String> keyValueMap;