Java 如何让 DateTimeFormat 与 Spring MVC 一起工作？
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How do I get DateTimeFormat working with Spring MVC?
提问by Trant
I have a controller method that looks like this:
我有一个看起来像这样的控制器方法：
@RequestMapping(headers = "Accept=application/json;charset=utf-8", value = "/test", method = RequestMethod.GET)
@ResponseBody
public Blah test(@ModelAttribute MyObject parms, HttpServletRequest request) throws Exception {
// blah blah
}
MyOBject looks like this:
MyOBject 看起来像这样：
public class MyObject{
@DateTimeFormat(iso = DateTimeFormat.ISO.DATE_TIME)
private Calendar someDate;
// blah blah setters getters
When I call this method via browser like so:
当我通过浏览器调用这个方法时：
http://localhost:8080/blah/test?someDate=2011-07-11T21%3A28%3A59.564%2B01%3A00
I am getting Error 400 - Bad Request.
我收到错误 400 - 错误的请求。
I kept trying with various different values for someDate (always using a URL encoder to encode the special chars) and nothing works. All the ones I tried (pre-URL encoding):
我一直在尝试使用 someDate 的各种不同值（总是使用 URL 编码器对特殊字符进行编码），但没有任何效果。我尝试过的所有（前 URL 编码）：
2000-10-31 01:30:00.000-05:00
2000-10-31 01:30:00.000-05:00
2011-07-11T21:28:59.564+01:00
2011-07-11T21:28:59.564+01:00
2014-04-23T13:49:28.600Z
2014-04-23T13:49:28.600Z
I know dates dont match I am merely trying to get Spring to parse this damn date for me into that Calendar object!! (Though really I would prefer it was a java.sql.Timestamp but that's probably even harder to get done)
我知道日期不匹配我只是想让 Spring 为我解析这个该死的日期到那个 Calendar 对象中！！（虽然我真的更喜欢它是一个 java.sql.Timestamp 但这可能更难完成）
How do I do this?
我该怎么做呢？
Am I writing the date wrong? Am I using the wrong annotation for properties in a ModelAttribute (Note I have many other parameters so I bundle them up in a ModelAttribute object, dont want to use @RequestParm)
我写错日期了吗？我是否对 ModelAttribute 中的属性使用了错误的注释（注意我有许多其他参数，所以我将它们捆绑在 ModelAttribute 对象中，不想使用 @RequestParm）
The error that shows up in log file:
日志文件中显示的错误：
Field error in object 'myObject' on field 'someDate': rejected value [2011-07-11T21:28:59.564+01:00]; codes [typeMismatch.myObject.someDate,typeMismatch.someDate,typeMismatch.java.util.Calendar,typeMismatch]; arguments [org.springframework.context.support.DefaultMessageSourceResolvable: codes [myObject.someDate,someDate]; arguments []; default message [someDate]]; default message [Failed to convert property value of type 'java.lang.String' to required type 'java.util.Calendar' for property 'someDate'; nested exception is org.springframework.core.convert.ConversionFailedException: Failed to convert from type java.lang.String to type @org.springframework.format.annotation.DateTimeFormat java.util.Calendar for value '2011-07-11T21:28:59.564+01:00'; nested exception is java.lang.IllegalArgumentException: Unable to parse '2011-07-11T21:28:59.564+01:00']
采纳答案by Sotirios Delimanolis
This
这个
'2011-07-11T21:28:59.564+01:00'
value is incorrect since the expected format is
值不正确，因为预期的格式是
yyyy-MM-dd'T'HH:mm:ss.SSSZ
you can't have a :inside the +0100timezone offset.
你不能:在+0100时区偏移内有一个。
You must be url encoding it wrong.
你一定是 url 编码错误。
