如何提取JSON字符串中的recordNumber字段值

给定的JSON字符串 #

{"Response":{"status":"200","result":{"result":{"Success":true,"Message":"","ErrorCode":null},"data":{"recordId":"22CAP-00000-000YG","recordNumber":"RSLC-2022-00000034","recordBalance":"0.0","recordFees":null}}}}

提取方法示例 #

Python 实现 #

import json

json_str = '{"Response":{"status":"200","result":{"result":{"Success":true,"Message":"","ErrorCode":null},"data":{"recordId":"22CAP-00000-000YG","recordNumber":"RSLC-2022-00000034","recordBalance":"0.0","recordFees":null}}}}'
data = json.loads(json_str)
record_number = data['Response']['result']['data']['recordNumber']
print(record_number)  # 输出: RSLC-2022-00000034

Java 实现 #

import com.fasterxml.jackson.databind.JsonNode;
import com.fasterxml.jackson.databind.ObjectMapper;

public class ExtractRecordNumber {
    public static void main(String[] args) throws Exception {
        String jsonStr = "{\"Response\":{\"status\":\"200\",\"result\":{\"result\":{\"Success\":true,\"Message\":\"\",\"ErrorCode\":null},\"data\":{\"recordId\":\"22CAP-00000-000YG\",\"recordNumber\":\"RSLC-2022-00000034\",\"recordBalance\":\"0.0\",\"recordFees\":null}}}}";
        ObjectMapper mapper = new ObjectMapper();
        JsonNode rootNode = mapper.readTree(jsonStr);
        String recordNumber = rootNode.path("Response").path("result").path("data").path("recordNumber").asText();
        System.out.println(recordNumber);  // 输出: RSLC-2022-00000034
    }
}

关键说明 #

需严格按照JSON的层级路径访问：Response → result → data → recordNumber，即可获取目标值 RSLC-2022-00000034。

内容的提问来源于stack exchange，提问作者JavaGeek