SpringMVC日期格式化

SpringMVC日期格式化一 关于 SpringMVC 日期的格式化大概可分为四点 1 ResponseBody 方式返回 json 的日期格式化 2 ajax 方式返回 json 的日期格式化 3 数据保存时 String 转 Date 4 页面展示时 Date 转固定格式的 String 二 配置实现日期格式化 无配置的 json 数据 日期显示为 timestamp id 8 loginName chensan

一、关于SpringMVC日期的格式化大概可分为四点

1.@ResponseBody方式返回json的日期格式化

2.ajax方式返回json的日期格式化

3.数据保存时String转Date

4.页面展示时,Date转固定格式的String

二、配置实现日期格式化

无配置的json数据,日期显示为timestamp

{"id":8,"loginName":"chensan","loginPwd":"123456","userName":"陈三","mnemonic":null,"sex":2,"birthday":631123200000,"status":1,"createBy":1,"createDatetime":1527955762000,"updateBy":1,"updateDatetime":1528040703000,"delFlag":null,"remark":"xsdssds说到底发生的bbbbb","roleIds":null}

1.@ResponseBody方式返回json的日期格式化

在com.fasterxml.jackson.databind.ObjectMapper设置相应属性

SerializationFeature.WRITE_DATES_AS_TIMESTAMPS默认为true,日期显示为时间戳;

修改为false

{"id":8,"loginName":"chensan","loginPwd":"123456","userName":"陈三","mnemonic":null,"sex":2,"birthday":"1989-12-31T16:00:00.000+0000","status":1,"createBy":1,"createDatetime":"2018-06-02T16:09:22.000+0000","updateBy":1,"updateDatetime":"2018-06-03T15:45:03.000+0000","delFlag":null,"remark":"xsdssds说到底发生的bbbbb","roleIds":null}

时区默认0时区,设置东八区timezone=”GMT+8″

{"id":8,"loginName":"chensan","loginPwd":"123456","userName":"陈三","mnemonic":null,"sex":2,"birthday":"1990-01-01T00:00:00.000+0800","status":1,"createBy":1,"createDatetime":"2018-06-03T00:09:22.000+0800","updateBy":1,"updateDatetime":"2018-06-03T23:45:03.000+0800","delFlag":null,"remark":"xsdssds说到底发生的bbbbb","roleIds":null}

日期格式化DateFormat设置为”yyyy-MM-dd HH:mm:ss”格式

{"id":8,"loginName":"chensan","loginPwd":"123456","userName":"陈三","mnemonic":null,"sex":2,"birthday":"1990-01-01 00:00:00","status":1,"createBy":1,"createDatetime":"2018-06-03 00:09:22","updateBy":1,"updateDatetime":"2018-06-03 23:45:03","delFlag":null,"remark":"xsdssds说到底发生的bbbbb","roleIds":null}

无时分秒的日期,时分秒以0补齐,如:birthday,需要在字段上设置@JsonFormat(pattern=”yyyy-MM-dd”);用以覆盖ObjectMapper中的配置 ;

也可以不配置ObjectMapper中相应的配置,只须在日期字段设置@JsonFormat(pattern=”yyyy-MM-dd HH:mm:ss”, timezone=”GMT+8″)配置日期格式和时区,根据实际情况设置日期格式和时区;

{"id":8,"loginName":"chensan","loginPwd":"123456","userName":"陈三","mnemonic":null,"sex":2,"birthday":"1990-01-01","status":1,"createBy":1,"createDatetime":"2018-06-03 00:09:22","updateBy":1,"updateDatetime":1528040703000,"delFlag":null,"remark":"xsdssds说到底发生的bbbbb","roleIds":null}

这个返回的json去掉了jackson的ObjectMapper配置,配置了
@JsonFormat的字段也不会以时间戳显示;

当然,建议统一设置jackson配置;

public class CustomObjectMapper extends ObjectMapper {
private static final long serialVersionUID = 1L;

public CustomObjectMapper() {
//禁止使用时间戳
this.configure(SerializationFeature.WRITE_DATES_AS_TIMESTAMPS, false);
//设置为中国上海时区
this.setTimeZone(TimeZone.getTimeZone("GMT+8"));
//设置日期格式
this.setDateFormat(new SimpleDateFormat("yyyy-MM-dd HH:mm:ss"));

//反序列化时,属性不存在的兼容处理
//this.getDeserializationConfig().withoutFeatures(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES);
//如果是空对象的时候,不抛异常
//this.configure(SerializationFeature.FAIL_ON_EMPTY_BEANS, false);
//反序列化的时候如果多了其他属性,不抛出异常
//this.configure(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES, false);
//单引号处理
//this.configure(com.fasterxml.jackson.core.JsonParser.Feature.ALLOW_SINGLE_QUOTES, true);
}

}

springmvc配置文件









参考:https://www.cnblogs.com/lcngu/p/5785805.html

https://www.cnblogs.com/coder6/p/6738781.html

Spring3.x和Spring4.x的配置有区别,参考:https://blog.csdn.net/m0_38016299/article/details/78338048

2.ajax方式返回json的日期格式化

非@ResponseBody的日期格式化

BaseController

public class BaseController {
protected static final Logger loger = LoggerFactory.getLogger(BaseController.class);

protected static SerializeConfig mapping = new SerializeConfig();
protected static String dateFormat;
static {
dateFormat = "yyyy-MM-dd HH:mm:ss";
mapping.put(Date.class, new SimpleDateFormatSerializer(dateFormat));
}

/**
* 向客户端输出html字符串
* @param response HttpServletResponse响应
* @param content 要输出到客户端的字符串
*/
public void writeResponse(HttpServletResponse response, String content) {
response.setCharacterEncoding("utf-8");
response.setContentType("text/html; charset=UTF-8");
PrintWriter writer;
try {
writer = response.getWriter();
writer.write(content);
writer.flush();
} catch (IOException e) {
loger.error("向客户端写入数据失败", e);
}
}

/**
* 根据MIME类型输出响应内容。
* @param response HttpServletResponse响应
* @param content 要输出到客户端的字符串
* @param contentType 输出ContentType
*/
public void writeResponseByMIME(HttpServletResponse response, String content, String contentType) {
response.setCharacterEncoding("utf-8");
response.setContentType(contentType + "; charset=UTF-8");

PrintWriter writer;
try {
writer = response.getWriter();
writer.write(content);
writer.flush();
} catch (IOException e) {
loger.error("向客户端写入数据失败", e);
}
}
}

Controller继承BaseController

/**
* 测试ajax方式(非@ResponseBody注解方式)获取json数据
* @param id
* @param response
* 可以看到非@ResponseBody注解(ajax)方式获取的json格式为时间戳格式, 故而在BaseController对日期格式化
* 这里用的json包围fastjson,所以设置SerializeConfig,字段上注解用@JSONField(format="yyyy-MM-dd HH:mm:ss"),具体格式根据需要自定义
*
*/
@RequestMapping("/getJsonData2/{id}")
public void ajaxGetJsonData(@PathVariable(value = "id") Integer id, HttpServletResponse response) {
User entity = userService.queryById(id);
JSONPObject jsonp = new JSONPObject();
jsonp.addParameter(entity);
String jsonResult = JSON.toJSONString(jsonp, BaseController.mapping, SerializerFeature.WriteMapNullValue);
this.writeResponseByMIME(response, jsonResult, MimeTypeUtils.APPLICATION_JSON_VALUE);
}

/**
* fastjson过滤字段
* @param id
* @param response
*/
@RequestMapping("/getJsonData3/{id}")
public void ajaxGetJsonData2(@PathVariable(value = "id") Integer id, HttpServletResponse response) {
User entity = userService.queryById(id);
JSONPObject jsonp = new JSONPObject();
jsonp.addParameter(entity);
SimplePropertyPreFilter filter = new SimplePropertyPreFilter(User.class, "id", "userName", "loginName",
"birthday", "sex", "status", "createDatetime", "updateDatetime");
String jsonResult = JSON.toJSONString(jsonp, BaseController.mapping, filter, SerializerFeature.WriteMapNullValue);
this.writeResponseByMIME(response, jsonResult, MimeTypeUtils.APPLICATION_JSON_VALUE);
}
null({"birthday":"1990-01-01 00:00:00","createBy":1,"createDatetime":"2018-06-03 00:09:22","delFlag":null,"id":8,"loginName":"chensan","loginPwd":"123456","mnemonic":null,"remark":"xsdssds说到底发生的bbbbb","roleIds":null,"sex":2,"status":1,"updateBy":1,"updateDatetime":"2018-06-03 23:45:03","userName":"陈三"})

BaseController设置日期格式为”yyyy-MM-dd HH:mm:ss”,birthday只有年月日需要在字段自定义格式@JSONField (format=”yyyy-MM-dd”)

3.数据保存时String转Date

数据保存时,页面的String不转为Date,则字段类型无法匹配,数据不能保存。在Model设置注解@DateTimeFormat(pattern = “yyyy-MM-dd HH:mm:ss”),将字符串格式化,@DateTimeFormat能将String自动转为Date;至于ConversionServiceFactoryBean,实在没必要啊,我最初还以为是可以将页面展示的日期格式化为”yyyy-MM-dd HH:mm:ss”格式才试了试。

ConversionServiceFactoryBean配置,参考:https://www.cnblogs.com/ssslinppp/p/4600043.html

4.页面展示时,Date转固定格式的String

页面不格式化的日期,如:Sun Jun 03 00:09:22 CST 2018

1.模板用format标签就行了,所有模板引擎都有提供

2.用spring的标签<%@ taglib prefix=”s” uri=”http://www.springframework.org/tags” %>,

需要搭配@DateTimeFormat标签使用

参考:https://www.cnblogs.com/liukemng/p/3748137.html

3.还有就是在js调用格式化

/ 自定义日期格式化
Date.prototype.Format = function (fmt) {
var o = {
"M+": this.getMonth() + 1, // 月份
"d+": this.getDate(), // 日
"h+": this.getHours(), // 小时
"m+": this.getMinutes(), // 分
"s+": this.getSeconds(), // 秒
"q+": Math.floor((this.getMonth() + 3) / 3), // 季度
"S": this.getMilliseconds() // 毫秒
};
if (/(y+)/.test(fmt)) fmt = fmt.replace(RegExp.$1, (this.getFullYear() + "").substr(4 - RegExp.$1.length));
for (var k in o)
if (new RegExp("(" + k + ")").test(fmt)) fmt = fmt.replace(RegExp.$1, (RegExp.$1.length == 1) ? (o[k]) : (("00" + o[k]).substr(("" + o[k]).length)));
return fmt;
}

或者用日期选择器插件,初始化日期

4.见过最邪门的是公司的SpringCloud项目,去掉了所有配置文件的日期格式化,去掉了硬编码的java类配置与日期格式化相关的类,字段也没调用js和用format标签,但是thyemeleaft模板就是将日期格式化了。(问了老大本人,他指出所有配置的地方,奈何我已全测试过不顶用才去问的;项目很久他忘了是怎么配置的。实在搞不定,只能等把整个项目完全消化掉再去看了)

编程小号
上一篇 2025-01-16 20:57
下一篇 2025-01-16 20:46

相关推荐

版权声明:本文内容由互联网用户自发贡献,该文观点仅代表作者本人。本站仅提供信息存储空间服务,不拥有所有权,不承担相关法律责任。如发现本站有涉嫌侵权/违法违规的内容, 请发送邮件至 举报,一经查实,本站将立刻删除。
如需转载请保留出处:https://bianchenghao.cn/hz/148855.html