关于Spring Jackson 反序列化Date时遇到的问题

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Jackson对于date的反序列化只支持几种，如果不符合默认格式则会报一下错误

具体支持：("yyyy-MM-dd'T'HH:mm:ss.SSSZ", "yyyy-MM-dd'T'HH:mm:ss.SSS'Z'", "EEE, dd MMM yyyy HH:mm:ss zzz", "yyyy-MM-dd")

异常信息：

org.springframework.web.servlet.mvc.support.DefaultHandlerExceptionResolver 2017-09-19 23:10:12 -- WARN -- Failed to read HTTP message: org.springframework.http.converter.HttpMessageNotReadableException: Could not read document: Can not construct instance of java.util.Date from String value '2012-12-01 12:01:00': not a valid representation (error: Failed to parse Date value '2012-12-01 12:01:00': Can not parse date "2012-12-01 12:01:00": not compatible with any of standard forms ("yyyy-MM-dd'T'HH:mm:ss.SSSZ", "yyyy-MM-dd'T'HH:mm:ss.SSS'Z'", "EEE, dd MMM yyyy HH:mm:ss zzz", "yyyy-MM-dd")) at [Source: java.io.PushbackInputStream@1b56b734; line: 1, column: 46] (through reference chain: com.cy.ssm.beans.UserBean["book"]->com.cy.ssm.beans.book["date_"]); nested exception is com.fasterxml.jackson.databind.exc.InvalidFormatException: Can not construct instance of java.util.Date from String value '2012-12-01 12:01:00': not a valid representation (error: Failed to parse Date value '2012-12-01 12:01:00': Can not parse date "2012-12-01 12:01:00": not compatible with any of standard forms ("yyyy-MM-dd'T'HH:mm:ss.SSSZ", "yyyy-MM-dd'T'HH:mm:ss.SSS'Z'", "EEE, dd MMM yyyy HH:mm:ss zzz", "yyyy-MM-dd")) at [Source: java.io.PushbackInputStream@1b56b734; line: 1, column: 46] (through reference chain: com.cy.ssm.beans.UserBean["book"]->com.cy.ssm.beans.book["date_"])org.springframework.web.servlet.mvc.support.DefaultHandlerExceptionResolver 2017-09-19 23:10:12 -- WARN -- Handler execution resulted in exception: Could not read document: Can not construct instance of java.util.Date from String value '2012-12-01 12:01:00': not a valid representation (error: Failed to parse Date value '2012-12-01 12:01:00': Can not parse date "2012-12-01 12:01:00": not compatible with any of standard forms ("yyyy-MM-dd'T'HH:mm:ss.SSSZ", "yyyy-MM-dd'T'HH:mm:ss.SSS'Z'", "EEE, dd MMM yyyy HH:mm:ss zzz", "yyyy-MM-dd")) at [Source: java.io.PushbackInputStream@1b56b734; line: 1, column: 46] (through reference chain: com.cy.ssm.beans.UserBean["book"]->com.cy.ssm.beans.book["date_"]); nested exception is com.fasterxml.jackson.databind.exc.InvalidFormatException: Can not construct instance of java.util.Date from String value '2012-12-01 12:01:00': not a valid representation (error: Failed to parse Date value '2012-12-01 12:01:00': Can not parse date "2012-12-01 12:01:00": not compatible with any of standard forms ("yyyy-MM-dd'T'HH:mm:ss.SSSZ", "yyyy-MM-dd'T'HH:mm:ss.SSS'Z'", "EEE, dd MMM yyyy HH:mm:ss zzz", "yyyy-MM-dd")) at [Source: java.io.PushbackInputStream@1b56b734; line: 1, column: 46] (through reference chain: com.cy.ssm.beans.UserBean["book"]->com.cy.ssm.beans.book["date_"])

解决方案：

import java.io.IOException;import java.text.ParseException;import java.text.SimpleDateFormat;import java.util.Date;import com.fasterxml.jackson.core.JsonParser;import com.fasterxml.jackson.core.JsonProcessingException;import com.fasterxml.jackson.databind.DeserializationContext;import com.fasterxml.jackson.databind.JsonDeserializer;/** *     * 项目名称：    * 类名称：SpringMVC_Custom_Json_Date_Deserializer    * 类描述：    * 创建人：    * 创建时间：2017年9月19日 下午11:15:52    * 修改人：Administrator    * 修改时间：2017年9月19日 下午11:15:52    * 修改备注：    * @version     * */public class SpringMVC_Custom_Json_Date_Deserializer 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);                  }      }  }

必要的操作：

在对应的实体类的setting上进行注册

@JsonDeserialize(using = SpringMVC_Custom_Json_Date_Deserializer.class)

具体注册实力：

import java.util.Date;import com.cy.ssm.util.SpringMVC_Custom_Json_Date_Deserializer;import com.fasterxml.jackson.databind.annotation.JsonDeserialize;public class book {private int id;private String name;private String page;private Date date_;public Date getDate_() {return date_;}@JsonDeserialize(using = SpringMVC_Custom_Json_Date_Deserializer.class) public void setDate_(Date date_) {this.date_ = date_;}public int getId() {return id;}public void setId(int id) {this.id = id;}public String getName() {return name;}public void setName(String name) {this.name = name;}public String getPage() {return page;}public void setPage(String page) {this.page = page;}}

重启服务器。

还有一种方式是使用

org.springframework.format.annotation包下的@DateTimeFormat(pattern = "yyyy-MM-dd HHmmss") 也是可以接收Date类型

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