关于Spring Jackson 反序列化Date时遇到的问题

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 {
SimpleDa
9d8e
teFormat 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