Mybatis 使用@requestbody 日期自定义转换 http://my.oschina.net/u/1992570/blog/715475
通常情况下，使用@requestbody json这种传参格式的时候 日期转换可能会遇到的问题。
查看源码
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/** * Defines a commonly used date format that conforms * to ISO-8601 date formatting standard, when it includes basic undecorated * timezone definition */ protected final static String DATE_FORMAT_STR_ISO8601 = "yyyy-MM-dd'T'HH:mm:ss.SSSZ"; /** * Same as 'regular' 8601, but handles 'Z' as an alias for "+0000" * (or "GMT") */ protected final static String DATE_FORMAT_STR_ISO8601_Z = "yyyy-MM-dd'T'HH:mm:ss.SSS'Z'"; /** * ISO-8601 with just the Date part, no time */ protected final static String DATE_FORMAT_STR_PLAIN = "yyyy-MM-dd"; /** * This constant defines the date format specified by * RFC 1123 / RFC 822. */ protected final static String DATE_FORMAT_STR_RFC1123 = "EEE, dd MMM yyyy HH:mm:ss zzz"; |
只支持这几种格式 日期转换。因此遇到了各种坑，特此分享。
解决方案如下：
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<bean id="mappingJacksonHttpMessageConverter" class="org.springframework.http.converter.json.MappingJackson2HttpMessageConverter"> <!-- <constructor-arg> <bean class="com.fasterxml.jackson.databind.ObjectMapper"> <property name="dateFormat"> <bean class="java.text.SimpleDateFormat"> <constructor-arg type="java.lang.String" value="yyyy-MM-dd HH:mm:ss" /> </bean> </property> </bean> </constructor-arg> --> <property name="objectMapper"> <bean class="org.springframework.http.converter.json.Jackson2ObjectMapperFactoryBean"> <property name="featuresToEnable"> <array> <util:constant static-field="com.fasterxml.jackson.databind.SerializationFeature.WRAP_ROOT_VALUE" /> </array> </property> <property name="dateFormat"> <!-- 智能日期转换 --> <bean class="com.dateformatx.SmartDateFormat"/> </property> </bean> </property> <property name="supportedMediaTypes"> <list> <value>application/json;charset=UTF-8</value> <value>text/html;charset=UTF-8</value> </list> </property> </bean> |
我们可以自己去定义一个日期转换类
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package com.dateformatx; import java.text.FieldPosition; import java.text.ParseException; import java.text.SimpleDateFormat; import java.util.Date; /** * Description: 智能日期转换 * Author: */ public class SmartDateFormat extends SimpleDateFormat { /** * */ private static final long serialVersionUID = 6517753776479429611L; @Override public StringBuffer format(Date date, StringBuffer toAppendTo, FieldPosition pos) { return new StringBuffer(DateUtil.smartFormat(date)); } @Override public Date parse(String text) throws ParseException { return DateUtil.smartFormat(text); } } |
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package com.dateformatx; import java.text.ParseException; import java.text.SimpleDateFormat; import java.util.Date; import org.apache.commons.lang3.StringUtils; /** * DateUtil类 * * @author */ public class DateUtil { public static final String Y_M_D = "yyyy-MM-dd"; public static final String Y_M_D_HM = "yyyy-MM-dd HH:mm"; public static final String Y_M_D_HMS = "yyyy-MM-dd HH:mm:ss"; public static final String YMD = "yyyyMMdd"; public static final String YMDHM = "yyyyMMddHHmm"; public static final String YMDHMS = "yyyyMMddHHmmss"; public static final String ymd = "yyyy/MM/dd"; public static final String ymd_HM = "yyyy/MM/dd HH:mm"; public static final String ymd_HMS = "yyyy/MM/dd HH:mm:ss"; public static final String Y_M = "yyyy-MM"; /** * 智能转换日期 * * @param date * @return */ public static String smartFormat(Date date) { String dateStr = null; if (date == null) { dateStr = ""; } else { try { dateStr = formatDate(date, Y_M_D_HMS); //时分秒 if (dateStr.endsWith(" 00:00:00")) { dateStr = dateStr.substring(0, 10); } //时分 else if (dateStr.endsWith("00:00")) { dateStr = dateStr.substring(0, 16); } //秒 else if (dateStr.endsWith(":00")) { dateStr = dateStr.substring(0, 16); } } catch (Exception ex) { throw new IllegalArgumentException("转换日期失败: " + ex.getMessage(), ex); } } return dateStr; } /** * 智能转换日期 * * @param text * @return */ public static Date smartFormat(String text) { Date date = null; try { if (text == null || text.length() == 0) { date = null; } else if (text.length() == 10) { date = formatStringToDate(text, Y_M_D); } else if (text.length() == 13) { date = new Date(Long.parseLong(text)); } else if (text.length() == 16) { date = formatStringToDate(text, Y_M_D_HM); } else if (text.length() == 19) { date = formatStringToDate(text, Y_M_D_HMS); }else if (text.length() == 7) { date = formatStringToDate(text, Y_M); }else { throw new IllegalArgumentException("日期长度不符合要求!"); } } catch (Exception e) { throw new IllegalArgumentException("日期转换失败!"); } return date; } /** * 获取当前日期 * @param format * @return * @throws Exception */ public static String getNow(String format) throws Exception{ return formatDate(new Date(), format); } /** * 格式化日期格式 * * @param argDate * @param argFormat * @return 格式化后的日期字符串 */ public static String formatDate(Date argDate, String argFormat) throws Exception { if (argDate == null) { throw new Exception("参数[日期]不能为空!"); } if (StringUtils.isEmpty(argFormat)) { argFormat = Y_M_D; } SimpleDateFormat sdfFrom = new SimpleDateFormat(argFormat); return sdfFrom.format(argDate).toString(); } /** * 把字符串格式化成日期 * * @param argDateStr * @param argFormat * @return */ public static Date formatStringToDate(String argDateStr, String argFormat) throws Exception { if (argDateStr == null || argDateStr.trim().length() < 1) { throw new Exception("参数[日期]不能为空!"); } String strFormat = argFormat; if (StringUtils.isEmpty(strFormat)) { strFormat = Y_M_D; if (argDateStr.length() > 16) { strFormat = Y_M_D_HMS; } else if (argDateStr.length() > 10) { strFormat = Y_M_D_HM; } else if(argDateStr.length() ==7 ){ strFormat = Y_M; } } SimpleDateFormat sdfFormat = new SimpleDateFormat(strFormat); //严格模式 sdfFormat.setLenient(false); try { return sdfFormat.parse(argDateStr); } catch (ParseException e) { throw new Exception(e); } } } |
