FreeMarker template error:Can‘t convert the date-like value to string because it isn‘t known if it‘

FreeMarker template error: Can't convert the date-like value to string because it isn't known if it's a date (no time part), time or date-time value. The blamed expression: ==> (time)!''  [in template "strTpl" at line 1, column 3]

---- Tip: Use ?date, ?time, or ?datetime to tell FreeMarker the exact type. ---- Tip: If you need a particular format only once, use ?string(pattern), like ?string('dd.MM.yyyy HH:mm:ss'), to specify which fields to display. ----

---- FTL stack trace ("~" means nesting-related):     - Failed at: ${(time)!""}  [in template "strTpl" at line 1, column 1] ----

Java stack trace (for programmers): ---- freemarker.core._TemplateModelException: [... Exception message was already printed; see it above ...]     at freemarker.core._MessageUtil.newCantFormatUnknownTypeDateException(_MessageUtil.java:301)     at freemarker.core.Environment.getTemplateDateFormat(Environment.java:1660)     at freemarker.core.Environment.getTemplateDateFormat(Environment.java:1645)     at freemarker.core.EvalUtil.coerceModelToStringOrMarkup(EvalUtil.java:380)     at freemarker.core.EvalUtil.coerceModelToStringOrMarkup(EvalUtil.java:358)     at freemarker.core.DollarVariable.calculateInterpolatedStringOrMarkup(DollarVariable.java:100)     at freemarker.core.DollarVariable.accept(DollarVariable.java:63)     at freemarker.core.Environment.visit(Environment.java:330)     at freemarker.core.Environment.process(Environment.java:309)     at freemarker.template.Template.process(Template.java:384)     at com.xfs.micro.common.module.utils.tools.FreemarkerTemplateUtil.processFreemarker(FreemarkerTemplateUtil.java:32)     at com.xfs.micro.log.service.buried.filter.BuriedPointEvidenceFilter.main(BuriedPointEvidenceFilter.java:90) Caused by: freemarker.core.UnknownDateTypeFormattingUnsupportedException: Can't convert the date-like value to string because it isn't known if it's a date (no time part), time or date-time value.     at freemarker.core.Environment.getTemplateDateFormat(Environment.java:1722)     at freemarker.core.Environment.getTemplateDateFormat(Environment.java:1492)     at freemarker.core.Environment.getTemplateDateFormat(Environment.java:1658)     ... 10 more

按报错提示信息修改问题：

${requestInfo.requestTime?string('yyyy-MM-dd HH:mm:ss.SSS')}

不可以写成${requestInfo.requestTime?string("yyyy-MM-dd HH:mm:ss.SSS")}否则还会报转义字符\的错误

或者

${requestInfo.requestTime?date}

${requestInfo.requestTime?time}

${requestInfo.requestTime?datetime}