1. 錯誤信息:
com.fasterxml.jackson.databind.exc.MismatchedInputException: Cannot deserialize instance of java.util.ArrayList<com.chaz.weather.bean.Yesterday>
out of START_OBJECT token
踩坑:
SpringBoot 反序列化報錯
想把json數據直接轉成對象,實體類其中有個屬性是java.util.List;的,多寫了一個持續輸出報錯,然後就涼涼月色爲你思念成河!!!
原文:
public class Data {
private String shidu;
private Integer pm25;
private Integer pm10;
private String quality;
private String wendu;
private String ganmao;
private List<Forecast> forecast;
private List<Yesterday> yesterday;
}
修改後的:
public class Data {
private String shidu;
private Integer pm25;
private Integer pm10;
private String quality;
private String wendu;
private String ganmao;
private List<Forecast> forecast;
private Yesterday yesterday;
}
這樣就好了,
JSON 轉換工具:檢查你的JSON數據是否標準
推薦網址:http://www.bejson.com/
2. 錯誤信息二
com.fasterxml.jackson.databind.exc.InvalidDefinitionException: Cannot construct (no Creators)
這個錯誤是由於你沒有在實體類裏面沒有寫無參的構造函數
還好今天只遇到了這兩個錯誤,幸哉!