显示带有时区的freemarker格式化时间

Question

我需要显示两个不同时区的时间。

以下方法可行，但是芝加哥时间的格式很丑：

<p><b>Report performed (Belfast): </b> ${.now?string["EEEE, MMMM dd, yyyy, hh:mm a '('zzz')'"]}</p>
<p><b>Report performed (Chicago): </b> ${.now?iso('America/Chicago')}</p>

结果：

Report performed (UTC): Apr 23, 2019 12:08:27 PM
Report performed (Chicago): 2019-04-23T06:08:27-05:00

尝试串联会导致错误：

<p><b>Report performed (Chicago): </b> ${.now?iso('America/Chicago')?string["EEEE, MMMM dd, yyyy, hh:mm a '('zzz')'"]}</p>

12:30:18.307 [main] ERROR freemarker.runtime - Error executing FreeMarker template

freemarker.core.NonHashException：对于“ ... [...]”左侧操作数：预期为哈希，但这已评估为字符串（包装：f.t.SimpleScalar）： ==> .now？iso（'America / Chicago'）？string [在第80行第54列的模板“ emailTemplate.ftl”中]

---

FTL堆栈跟踪（“〜”表示与嵌套相关）：

-失败：$ {。now？iso（“ America / Chicago”）？string [... [在模板“ emailTemplate.ftl”的第80行，第52列中]

at freemarker.core.DynamicKeyName.dealWithStringKey(DynamicKeyName.java:142) ~[freemarker-2.3.25-incubating.jar:2.3.25]
at freemarker.core.DynamicKeyName._eval(DynamicKeyName.java:75) ~[freemarker-2.3.25-incubating.jar:2.3.25]
at freemarker.core.Expression.eval(Expression.java:81) ~[freemarker-2.3.25-incubating.jar:2.3.25]
at freemarker.core.DollarVariable.calculateInterpolatedStringOrMarkup(DollarVariable.java:96) ~[freemarker-2.3.25-incubating.jar:2.3.25]
at freemarker.core.DollarVariable.accept(DollarVariable.java:59) ~[freemarker-2.3.25-incubating.jar:2.3.25]
at freemarker.core.Environment.visit(Environment.java:327) [freemarker-2.3.25-incubating.jar:2.3.25]
at freemarker.core.Environment.visit(Environment.java:333) [freemarker-2.3.25-incubating.jar:2.3.25]
at freemarker.core.Environment.process(Environment.java:306) [freemarker-2.3.25-incubating.jar:2.3.25]
at freemarker.template.Template.process(Template.java:386) [freemarker-2.3.25-incubating.jar:2.3.25]
at mycode...

Answer 1

我相信您无法一go而就，因为.iso或任何dateformat都会返回string。默认情况下，您可以在ftl中指定time_zone并执行dateformat。

<#setting time_zone="America/Chicago">
<#assign aDateTime = .now>
${aDateTime?string["EEEE, MMMM dd, yyyy, hh:mm a '('zzz')'"]}

它给出输出Tuesday, April 23, 2019, 07:35 AM (CDT)

更多参考，请查看此Document