#JSONDemo

http://127.0.0.1:9092/swagger-ui.html https://www.baeldung.com/jackson-ignore-properties-on-serialization

@JsonIgnore注解用来忽略某些字段，可以用在Field或者Getter方法上，用在Setter方法时，和Filed效果一样。这个注解只能用在POJO存在的字段要忽略的情况，不能满足现在需要的情况。

@JsonIgnoreProperties(ignoreUnknown = true)，将这个注解写在类上之后，就会忽略类中不存在的字段，可以满足当前的需要。这个注解还可以指定要忽略的字段。使用方法如下：

@JsonIgnoreProperties({ "internalId", "secretKey" }) 指定的字段不会被序列化和反序列化。

https://github.com/yqbjtu/springboot/tree/master/JSONDemo

创建user的json , 没有配置spring.jackson.date-format=yyyy-MM-dd HH:mm:ss spring.jackson.time-zone=GMT+8， 所以可以创建成功

{
  "comment": "comment1",
  "fullName": "TomFull",
  "id": "456",
  "mail": "[email protected]",
  "name": "tom",
  "reg2Date": "2018-11-16T14:55:38.244Z",
  "regDate": "2018-11-16T14:55:38.244Z"
}

在application.properties中配置了 spring.jackson.date-format=yyyy-MM-dd HH:mm:ss spring.jackson.time-zone=GMT+8

之后，默认的User对象的private Date reg2Date;会按照yyyy-MM-dd HH:mm:ss输出， 如果create输入

{
  "userId": "06",
  "comment": "张三",
  "fullName": "tomFull",
  "id": "099",
  "mail": "06",
  "name": "tom",
  "reg2Date": "2018-11-17T02:46:25.793Z",
  "regDate": "2018-11-16 16:07:08"
}

就会报 { "timestamp": "2018-11-17 10:46:49", "status": 400, "error": "Bad Request", "exception": "org.springframework.http.converter.HttpMessageNotReadableException", "message": "JSON parse error: Can not deserialize value of type java.util.Date from String "2018-11-17T02:46:25.793Z": not a valid representation (error: Failed to parse Date value '2018-11-17T02:46:25.793Z': Unparseable date: "2018-11-17T02:46:25.793Z"); nested exception is com.fasterxml.jackson.databind.exc.InvalidFormatException: Can not deserialize value of type java.util.Date from String "2018-11-17T02:46:25.793Z": not a valid representation (error: Failed to parse Date value '2018-11-17T02:46:25.793Z': Unparseable date: "2018-11-17T02:46:25.793Z")\n at [Source: java.io.PushbackInputStream@29925daf; line: 8, column: 15] (through reference chain: com.yq.domain.vo.UserVO["reg2Date"])", "path": "/user/users" }

修改成

{
  "userId": "06",
  "comment": "张三",
  "fullName": "tomFull",
  "id": "099",
  "mail": "06",
  "name": "tom",
  "reg2Date": "2018-11-06 16:07:08",
  "regDate": "2018-11-16 16:07:08"
}

这样就可以创建成功

https://blog.jetbrains.com/idea/2014/03/debugger-for-jdk8s-nashorn-javascript-in-intellij-idea-13-1/