Question

我无法让这项工作：

@RequestMapping(value = "/people", method = RequestMethod.GET, produces = "application/json")
    public @ResponseBody
    List<IPerson> searchPerson(@RequestParam(value = "birthDay", required = false) @DateTimeFormat(pattern="yyyy-MM-dd") Date birthDay) {

请求：

http://localhost:8080/rest/people?birthDay=2014-05-25

错误总是：

“HTTP状态400 - 客户端发送的请求是语法上的不正确”。

我找不到任何资源可以给我一个明确的答案/指南来理解潜在的问题......有人可以帮助我吗？谢谢！

修改例外是：

Caused by: org.springframework.core.convert.ConversionFailedException: Failed to convert from type java.lang.String to type @org.springframework.web.bind.annotation.RequestParam @org.springframework.format.annotation.DateTimeFormat java.util.Date for value '2010-10-10'; nested exception is java.lang.IllegalArgumentException
    at org.springframework.core.convert.support.ObjectToObjectConverter.convert(ObjectToObjectConverter.java:78)
    at org.springframework.core.convert.support.ConversionUtils.invokeConverter(ConversionUtils.java:35)
    at org.springframework.core.convert.support.GenericConversionService.convert(GenericConversionService.java:168)
    at org.springframework.beans.TypeConverterDelegate.convertIfNecessary(TypeConverterDelegate.java:161)
    at org.springframework.beans.TypeConverterDelegate.convertIfNecessary(TypeConverterDelegate.java:93)
    at org.springframework.beans.TypeConverterSupport.doConvert(TypeConverterSupport.java:61)

... 40 more
Caused by: java.lang.IllegalArgumentException
    at java.util.Date.parse(Date.java:615)
    at java.util.Date.<init>(Date.java:272)
    at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
    at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:57)
    at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
    at java.lang.reflect.Constructor.newInstance(Constructor.java:526)
    at org.springframework.core.convert.support.ObjectToObjectConverter.convert(ObjectToObjectConverter.java:73)
    ... 45 more

Answer 1

在春季论坛中they表示您需要在配置中初始化转换服务才能自动使用Formatter。类似的东西：

<bean id="conversionService" class="org.springframework.context.support.ConversionServiceFactoryBean"/>  

<bean class="org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter">
    <property name="webBindingInitializer">
        <bean class="org.springframework.web.bind.support.ConfigurableWebBindingInitializer">
            <property name="conversionService" ref="conversionService" />
        </bean>
    </property>
</bean>

Answer 2

最后，我找到了解决方案，也许可以用于具有相同问题的其他人。只需将此方法添加到控制器：

@InitBinder
public void initBinder(WebDataBinder binder) {
    SimpleDateFormat dateFormat = new SimpleDateFormat("yyyy-MM-dd");
    dateFormat.setLenient(false);
    binder.registerCustomEditor(Date.class, new CustomDateEditor(dateFormat, false));
}

正好在文档中：http://docs.spring.io/spring/docs/3.1.x/spring-framework-reference/htmlsingle/spring-framework-reference.html#mvc-ann-webdatabinder

但仍然不明白为什么@DateTimeFormat（pattern =“yyyy-MM-dd”）不起作用...使用此解决方案不需要DateTimeFormat，所以我像其他人一样注释了param：< / p>

@RequestParam(required = false) Date birthDay

使用Spring Mvc Rest Service的@DateTimeFormat（pattern =“yyyy-MM-dd”）给出“错误400请求语法不正确”

2 个答案: