json字符串转换对象或列表,多了字段不会报错
//DEMO1 转换对象 应用 riskId
public class Item {
private String id;
private String rate;
public Item(String id, String rate) {
this.id = id;
this.rate = rate;
}
@Override
public String toString() {
return "Item{" +
"id='" + id + '\'' +
", rate='" + rate + '\'' +
'}';
}
public String getId() {
return id;
}
public void setId(String id) {
this.id = id;
}
public String getRate() {
return rate;
}
public void setRate(String rate) {
this.rate = rate;
}
}
Gson gson = new GsonBuilder().registerTypeAdapter(LocalDateTime.class, (JsonDeserializer<LocalDateTime>) (json, type, jsonDeserializationContext) ->
LocalDateTime.parse(json.getAsJsonPrimitive().getAsString(), DateTimeFormatter.ofPattern("yyyy-MM-dd'T'HH:mm:ss")))
.registerTypeAdapter(LocalDate.class, (JsonDeserializer<LocalDate>) (json, type, jsonDeserializationContext) ->
LocalDate.parse(json.getAsJsonPrimitive().getAsString(), DateTimeFormatter.ofPattern("yyyy-MM-dd"))).create();
//测试riskId
String sss = "{\"id\":\"40\",\"rate\":\"1000\",\"riskId\":\"560000\"}";
Item test2 = JSON.parseObject(sss,Item.class);
System.out.println("test2=" + test2.toString());
Item carInfo = gson.fromJson(sss, Item.class);
System.out.println("carInfo=" + carInfo.toString());
//测试结果:如果是json字符串多了字段,在映射转换对象的时候,不会报错。
output:
test2=Item{id='40', rate='1000'}
carInfo=Item{id='40', rate='1000'}
// DEMO2 转换列表
List<Item> configList = new ArrayList<>();
configList.add(new Item("1","100"));
configList.add(new Item("2","100"));
configList.add(new Item("3","100"));
configList.add(new Item("4","100"));
String json = JSON.toJSONString(configList);
System.out.println(json);
List<Item> configList2 = JSON.parseArray(json,Item.class);
for (Item item : configList2) {
System.out.println(GsonUtils.toJson(item));
}
output:
{"id":"1","rate":"100"}
{"id":"2","rate":"100"}
{"id":"3","rate":"100"}
{"id":"4","rate":"100"}