java – 杰克逊用时间戳字段反序列化JSON

我有这样的字符串：

{
   "debug":"false","switchTime":"2017-04-12 17:04:42.896026"
}

我试图通过这种方法获得对象：

new ObjectMapper().readValue(string,MyObject.class);

和MyObject类：

class MyObject {
    private Boolean debug;
    private Timestamp switchTime;
    //...getters,setters,constructors
}

我有这样的例外：

com.fasterxml.jackson.databind.exc.InvalidFormatException: 
Can not deserialize value of type java.sql.Timestamp from String
"2017-04-12 17:04:42.896026": not a valid representation (error:
Failed to parse Date value '2017-04-12 17:04:42.896026': 
Can not parse date "2017-04-12 17:04:42.896026Z": while it seems 
to fit format 'yyyy-MM-dd'T'HH:mm:ss.SSS'Z'',parsing fails (leniency? null))  at [Source:   
{"debug":"false","switchTime":"2017-04-12 17:04:42.896026"};

我不明白为什么……如果我在调试模式下使用Timestamp.valueOf()和“2017-04-12 17：04：42.896026” – 我有成功

解决方法

我想你需要使用@JsonFormat注释设置预期的日期/时间格式,如下所示.

class MyObject {
  private Boolean debug;
  @JsonFormat(pattern="yyyy-MM-dd HH:mm:ss.SSS")
  private Timestamp switchTime;
  //...getters,constructors
}

您还可以将时区设置为@JsonFormat(pattern =“yyyy-MM-dd HH：mm：ss.SSS”,timezone =“PST”)