@JsonAutoDetect(fieldVisibility = Visibility.ANY, getterVisibility = Visibility.NONE, isGetterVisibility = Visibility.NONE)
該註解的作用是：使用屬性名稱來轉json。   防止不規範的屬性報錯，比如 app_id

@JsonIgnoreProperties(ignoreUnknown = true)
該註解的作用是：在進行json轉對象是，防止傳入的json串包含不存在的屬性導致報錯。

案例：
 
 
 1 @JsonAutoDetect(fieldVisibility = Visibility.ANY, getterVisibility = Visibility.NONE, isGetterVisibility = Visibility.NONE)
 
 2 @JsonIgnoreProperties(ignoreUnknown = true)
 3 public class UnifiedPayOrderResponse {
 4     
 5     private String code;
 6     
 7     private String message;
 8     
 9     private String main_order_code;
10     
11     private String app_id;
12 
13     public String getCode() {
14         return
 
 code;
15     }
16 
17     public void setCode(String code) {
18         this.code = code;
19     }
20 
21     public String getMessage() {
22         return message;
23     }
24 
25     public void setMessage(String message) {
26         this.message = message;
27     }
28 
29     public
 
 String getMain_order_code() {
30         return main_order_code;
31     }
32 
33     public void setMain_order_code(String main_order_code) {
34         this.main_order_code = main_order_code;
35     }
36 
37     public String getApp_id() {
38         return app_id;
39     }
40 
41     public void setApp_id(String app_id) {
42         this.app_id = app_id;
43     }
44 
45 }

java jackson 忽略不存在的屬性字段 和 按照屬性名轉json