Caused by: com.fasterxml.jackson.databind.exc.InvalidFormatException:异常解决

异常信息：

Caused by: com.fasterxml.jackson.databind.exc.InvalidFormatException: Cannot deserialize value of type `java.util.Date` from String "2022-05-26 15:36:45": not a valid representation (error: Failed to parse Date value '2022-05-26 15:36:45': Cannot parse date "2022-05-26 15:36:45": while it seems to fit format 'yyyy-MM-dd'T'HH:mm:ss.SSSX', parsing fails (leniency? null))

错误原因：

• 默认情况下，Jackson使用com.fasterxml.jackson.databind.util.StdDateFormat类进行格式化。
  时间格式为：yyyy-MM-dd’T’HH:mm:ss.SSSZ，为ISO-8601数据类型。

• jackson默认的日期反序列不支持yyyy-MM-dd HH:mm:ss 这种格式，所以反序列化失败

解决办法：

• 解决方案一：在yml配置中进行配置序列化格式和时区

  spring:
    jackson:
      date-format: yyyy-MM-dd HH:mm:ss # 默认是StdDateFormat
      time-zone: GMT+8
  

• 解决方案二：在实体类日期参数上使用jackson注解

  @JsonFormat(pattern = "yyyy-MM-dd HH:mm:ss",timezone = "GMT+8")
  private Date createTime;
  

• 解决方案三：在实体类日期参数上使用fastjson注解

  	<!-- fastjson -->
  	<dependency>
  		<groupId>com.alibaba</groupId>
  		<artifactId>fastjson</artifactId>
  		<version>1.2.55</version>
  	</dependency>
  	<!-- jackson-->
  	<dependency>
  		<groupId>com.fasterxml.jackson.core</groupId>
  		<artifactId>jackson-databind</artifactId>
  		<version>2.11.3</version>
  	</dependency>
  

  @JSONField(format = “yyyy-MM-dd HH:mm:ss”)
  private Date createTime; 
  

• 解决方案四：重写jackson反序列化

  import com.fasterxml.jackson.core.JsonParser;
  import com.fasterxml.jackson.core.JsonProcessingException;
  import com.fasterxml.jackson.databind.DeserializationContext;
  import com.fasterxml.jackson.databind.JsonDeserializer;
   
  import java.io.IOException;
  import java.text.ParseException;
  import java.text.SimpleDateFormat;
  import java.util.Date;
   
   
  public class CustomJsonDateDeserializer extends JsonDeserializer<Date> {
        
   
      @Override
      public Date deserialize(JsonParser jp, DeserializationContext ctxt) throws IOException, JsonProcessingException {
        
          SimpleDateFormat format = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
          String date = jp.getText();
          try {
        
              return format.parse(date);
          } catch (ParseException e) {
        
              throw new RuntimeException(e);
          }
      }
  }
  

  @JsonDeserialize(using = CustomJsonDateDeserializer.class)
  private Date createTime;