java 字符串json转map

可以使用第三方库如Jackson或Gson来将JSON字符串转换为Map对象。以下是使用Jackson的示例代码：

import com.fasterxml.jackson.databind.ObjectMapper;
import java.util.Map;

public class JsonToMapExample {
    public static void main(String[] args) throws Exception {
        String json = "{\"name\":\"John\", \"age\":30, \"city\":\"New York\"}";

        ObjectMapper objectMapper = new ObjectMapper();
        Map<String, Object> map = objectMapper.readValue(json, Map.class);

        System.out.println(map);
    }
}