如何使用Java8迭代JsonArray
如何使用Java8迭代JsonArray
提问于 2018-08-29 19:48:37
我有Json数组，如下所示
{ "template": { "data": [{ "name": "customerGroupId", "value": "" }, { "name": "assetIntegrationId", "value": "" }, { "name": "problemCategory", "value": "" }, { "name": "problemSubCategory", "value": "" }, { "name": "resolutionCode", "value": "" }, { "name": "resolutionSubCode", "value": "" }, { "name": "imei", "value": "" }, { "name": "make", "value": "" }, { "name": "model", "value": "" }] } }我使用下面的代码来获取值。
JSONArray jsonArray = jsonObject.getJSONObject("template").getJSONArray("data");
for (int i = 0; i < jsonArray.size(); i++) {
JSONObject jsonObjectData = jsonArray.getJSONObject(i);
if ("customerGroupId".equals(jsonObjectData.get("name"))) {
customerBean.setCustomerGroupId(jsonObjectData.get(VALUE).toString());
LOGGER.debug("JSON customerGroupId " + jsonObjectData.get(VALUE).toString());
} else if ("assetIntegrationId".equals(jsonObjectData.get("name"))) {
customerBean.setAssetIntegrationId(jsonObjectData.get(VALUE).toString());
LOGGER.debug("JSON assetIntegrationId " + jsonObjectData.get(VALUE).toString());
} else if ("problemCategory".equals(jsonObjectData.get("name"))) {
customerBean.setProblemCategory(jsonObjectData.get(VALUE).toString());
LOGGER.debug("JSON problemCategory " + jsonObjectData.get(VALUE).toString());
} else if ("problemSubCategory".equals(jsonObjectData.get("name"))) {
customerBean.setProblemSubCategory(jsonObjectData.get(VALUE).toString());
LOGGER.debug("JSON problemSubCategory " + jsonObjectData.get(VALUE).toString());
} else if ("resolutionCode".equals(jsonObjectData.get("name"))) {
customerBean.setResolutionCode(jsonObjectData.get(VALUE).toString());
LOGGER.debug("JSON resolutionCode " + jsonObjectData.get(VALUE).toString());
}由于代码已经变得重复，在Java 8或Java中有什么方法可以避免代码的重复。
回答 1
Stack Overflow用户
发布于 2018-08-29 19:55:43
您可以尝试使用introspector或反射。并使用name查找属性或字段。Introspector：
JSONArray json = new JSONArray();
CustomerBean customerBean = new CustomerBean();
for (int i = json.size() - 1; i >= 0; i--) {
JSONObject data = json.getJSONObject(i);
PropertyDescriptor propDesc = new PropertyDescriptor(data.getString("name"), CustomerBean.class);
Method methodWriter = propDesc.getWriteMethod();
methodWriter.invoke(customerBean, data.getString("value"));
}反射：
JSONArray json = new JSONArray();
CustomerBean customerBean = new CustomerBean();
for (int i = json.size() - 1; i >= 0; i--) {
JSONObject data = json.getJSONObject(i);
Field field = CustomerBean.class.getDeclaredField(data.getString("name"));
field.set(customerBean, data.get("data"));
}页面原文内容由Stack Overflow提供。腾讯云小微IT领域专用引擎提供翻译支持
原文链接：
https://stackoverflow.com/questions/52076727
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