获取JSON某一部分数据

                //代码
                String taskParamsJson = dbBackAsynTask.getTaskParams();//json字符串
                ObjectMapper objectMapper = new ObjectMapper(); //因为在非静态方法里面使用，new这个工具类
                JsonNode paramsJson = objectMapper.readTree(taskParamsJson);//只获取异步任务的对应json里面的addSq04SupplierCodeList数据
                JsonNode addSq04SupplierCodeListNode = paramsJson.get("addSq04SupplierCodeList");
                if (addSq04SupplierCodeListNode != null && addSq04SupplierCodeListNode.isArray() && addSq04SupplierCodeListNode.size() > 0) {
                    newSq04SupplierCodeList = objectMapper.readValue(
                            addSq04SupplierCodeListNode.toString(),
                            new TypeReference<List<SyncPartDataDTO.Sq04SupplierCode>>() {});//这个可以给对象，也可以是集合，看你需要数据的类型
                }

      //jar包

  <dependency>
            <groupId>com.fasterxml.jackson.core</groupId>
            <artifactId>jackson-databind</artifactId>
            <version>2.13.5</version>
        </dependency>

//json格式
{
    "syncSource": "7",
    "leadPrjCode": "IVYTEST-483Z",
    "leadEvent": "Sourcing",
    "partSyncList": [
        {
            "partNo": "01125A6051",
            "bomSyncList": [
                {
                    "prjCbomId": "001B8E934F59A5D1E06340981AAC85BE",
                    "costFunctionCode": "A1AB",
                    "gfunctionCode": "G22210---"
                }
            ]
        }
    ],
    "addSq04SupplierCodeList": [
        {
            "sqSupplierPartMId": "001B8E936881A5D1E06340981AAC85BE",
            "prjCode": "IVYTEST-483Z",
            "event": "Sourcing",
            "supplierCode": "105X",
            "orderNo": 8
        }
    ],
    "userId": "DE9F7EC1E7AF6E5BE053FB881AAC0B41",
    "followPrjCodeList": [
        "Ivys-for BDS test"
    ]
}