Question

我尝试通过执行以下操作将String从String转换为Date：

形式：

   <tr>
        <td><form:label path="dateOfBirth" cssErrorClass="error"><spring:message
                code="account.dob"/></form:label></td>
        <td><form:input path="dateOfBirth" type="date"/></td>
        <td><form:errors path="dateOfBirth"/></td>
    </tr>

在配置类

中

import org.springframework.format.datetime.DateFormatter
// .....

@Configuration
@EnableWebMvc
@ComponentScan(basePackages = { "..." })
public class WebMvcContextConfiguration extends WebMvcConfigurerAdapter {

    //....
    @Override
    public void addFormatters(FormatterRegistry registry) {
        registry.addFormatter(new DateFormatter("yyyy-MM-dd"));
    }
}

输入值返回日期

的正确字符串格式

enter image description here

但它一直报告错误

无法将java.lang.String类型的属性值转换为必需值输入属性dateOfBirth的java.util.Date;嵌套异常是 org.springframework.core.convert.ConversionFailedException：失败从类型java.lang.String转换为类型java.util.Date类型 1999-01-01;嵌套异常是java.lang.IllegalArgumentException：无法解析1999-01-01

我可能在这里错过了什么？

更新：

我的验证员

 @Override
    public void validate(Object target, Errors errors) {
        ValidationUtils.rejectIfEmpty(errors, "username", "required", new Object[] { "Username" });
        ValidationUtils.rejectIfEmpty(errors, "password", "required", new Object[] { "Password" });
        ValidationUtils.rejectIfEmpty(errors, "emailAddress", "required", new Object[] { "Email address" });
        ValidationUtils.rejectIfEmpty(errors, "address.street", "required", new Object[] { "Street" });
        ValidationUtils.rejectIfEmpty(errors, "address.city", "required", new Object[] { "City" });
        ValidationUtils.rejectIfEmpty(errors, "address.country", "required", new Object[] { "Country" });

        if (!errors.hasFieldErrors("emailAddress")) {
            Account account = (Account) target;
            String email = account.getEmailAddress();
            if (!email.matches(EMAIL_PATTERN)) {
                errors.rejectValue("emailAddress", "invalid");
            }
        }
    }

我的处理程序

@RequestMapping(method = { RequestMethod.POST, RequestMethod.PUT })
public String handleRegistration(@Valid @ModelAttribute Account account,
                                 BindingResult result)
{
    this.logger.info("Registering account: {}", account);

    if (result.hasErrors()) {
        return "customer/register";
    }
    this.accountService.save(account);
    return "redirect:/customer/account/" + account.getId();
}

这是完整的堆栈跟踪

14:06:44.556 [http-bio-8080-exec-6] TRACE o.s.web.servlet.DispatcherServlet - Bound request context to thread: org.apache.catalina.connector.RequestFacade@3f2c9e94
14:06:44.557 [http-bio-8080-exec-6] DEBUG o.s.web.servlet.DispatcherServlet - DispatcherServlet with name 'dispatcher' processing POST request for [/chapter6-bookstore/customer/register]
14:06:44.557 [http-bio-8080-exec-6] TRACE o.s.web.servlet.DispatcherServlet - Testing handler map [org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerMapping@27a9283] in DispatcherServlet with name 'dispatcher'
14:06:44.557 [http-bio-8080-exec-6] DEBUG o.s.w.s.m.m.a.RequestMappingHandlerMapping - Looking up handler method for path /customer/register
14:06:44.557 [http-bio-8080-exec-6] TRACE o.s.w.s.m.m.a.RequestMappingHandlerMapping - Found 1 matching mapping(s) for [/customer/register] : [{[/customer/register],methods=[POST],params=[],headers=[],consumes=[],produces=[],custom=[]}]
14:06:44.557 [http-bio-8080-exec-6] DEBUG o.s.w.s.m.m.a.RequestMappingHandlerMapping - Returning handler method [public java.lang.String com.apress.prospringmvc.bookstore.web.controller.RegistrationController.handleRegistration(com.apress.prospringmvc.bookstore.domain.Account,org.springframework.validation.BindingResult)]
14:06:44.557 [http-bio-8080-exec-6] TRACE o.s.web.servlet.DispatcherServlet - Testing handler adapter [org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter@46b61f25]
14:06:44.557 [http-bio-8080-exec-6] TRACE o.s.w.m.s.HandlerMethodArgumentResolverComposite - Testing if argument resolver [org.springframework.web.method.annotation.RequestParamMethodArgumentResolver@7f22c404] supports [class com.apress.prospringmvc.bookstore.domain.Account]
14:06:44.558 [http-bio-8080-exec-6] TRACE o.s.w.m.s.HandlerMethodArgumentResolverComposite - Testing if argument resolver [org.springframework.web.method.annotation.RequestParamMapMethodArgumentResolver@71e75afc] supports [class com.apress.prospringmvc.bookstore.domain.Account]
14:06:44.558 [http-bio-8080-exec-6] TRACE o.s.w.m.s.HandlerMethodArgumentResolverComposite - Testing if argument resolver [org.springframework.web.servlet.mvc.method.annotation.PathVariableMethodArgumentResolver@57ffc75d] supports [class com.apress.prospringmvc.bookstore.domain.Account]
14:06:44.558 [http-bio-8080-exec-6] TRACE o.s.w.m.s.HandlerMethodArgumentResolverComposite - Testing if argument resolver [org.springframework.web.servlet.mvc.method.annotation.ServletModelAttributeMethodProcessor@2aea9f96] supports [class com.apress.prospringmvc.bookstore.domain.Account]
14:06:44.558 [http-bio-8080-exec-6] TRACE o.s.w.m.s.HandlerMethodArgumentResolverComposite - Testing if argument resolver [org.springframework.web.method.annotation.RequestParamMethodArgumentResolver@7f22c404] supports [interface org.springframework.validation.BindingResult]
14:06:44.558 [http-bio-8080-exec-6] TRACE o.s.w.m.s.HandlerMethodArgumentResolverComposite - Testing if argument resolver [org.springframework.web.method.annotation.RequestParamMapMethodArgumentResolver@71e75afc] supports [interface org.springframework.validation.BindingResult]
14:06:44.558 [http-bio-8080-exec-6] TRACE o.s.w.m.s.HandlerMethodArgumentResolverComposite - Testing if argument resolver [org.springframework.web.servlet.mvc.method.annotation.PathVariableMethodArgumentResolver@57ffc75d] supports [interface org.springframework.validation.BindingResult]
14:06:44.558 [http-bio-8080-exec-6] TRACE o.s.w.m.s.HandlerMethodArgumentResolverComposite - Testing if argument resolver [org.springframework.web.servlet.mvc.method.annotation.ServletModelAttributeMethodProcessor@2aea9f96] supports [interface org.springframework.validation.BindingResult]
14:06:44.558 [http-bio-8080-exec-6] TRACE o.s.w.m.s.HandlerMethodArgumentResolverComposite - Testing if argument resolver [org.springframework.web.servlet.mvc.method.annotation.RequestResponseBodyMethodProcessor@38670b9] supports [interface org.springframework.validation.BindingResult]
14:06:44.558 [http-bio-8080-exec-6] TRACE o.s.w.m.s.HandlerMethodArgumentResolverComposite - Testing if argument resolver [org.springframework.web.servlet.mvc.method.annotation.RequestPartMethodArgumentResolver@510ffbf9] supports [interface org.springframework.validation.BindingResult]
14:06:44.558 [http-bio-8080-exec-6] TRACE o.s.w.m.s.HandlerMethodArgumentResolverComposite - Testing if argument resolver [org.springframework.web.method.annotation.RequestHeaderMethodArgumentResolver@61bc5ad9] supports [interface org.springframework.validation.BindingResult]
14:06:44.559 [http-bio-8080-exec-6] TRACE o.s.w.m.s.HandlerMethodArgumentResolverComposite - Testing if argument resolver [org.springframework.web.method.annotation.RequestHeaderMapMethodArgumentResolver@1cdf3eeb] supports [interface org.springframework.validation.BindingResult]
14:06:44.559 [http-bio-8080-exec-6] TRACE o.s.w.m.s.HandlerMethodArgumentResolverComposite - Testing if argument resolver [org.springframework.web.servlet.mvc.method.annotation.ServletCookieValueMethodArgumentResolver@1f36d53b] supports [interface org.springframework.validation.BindingResult]
14:06:44.559 [http-bio-8080-exec-6] TRACE o.s.w.m.s.HandlerMethodArgumentResolverComposite - Testing if argument resolver [org.springframework.web.method.annotation.ExpressionValueMethodArgumentResolver@303156f7] supports [interface org.springframework.validation.BindingResult]
14:06:44.559 [http-bio-8080-exec-6] TRACE o.s.w.m.s.HandlerMethodArgumentResolverComposite - Testing if argument resolver [org.springframework.web.servlet.mvc.method.annotation.ServletRequestMethodArgumentResolver@1907d2c7] supports [interface org.springframework.validation.BindingResult]
14:06:44.559 [http-bio-8080-exec-6] TRACE o.s.w.m.s.HandlerMethodArgumentResolverComposite - Testing if argument resolver [org.springframework.web.servlet.mvc.method.annotation.ServletResponseMethodArgumentResolver@3b130da9] supports [interface org.springframework.validation.BindingResult]
14:06:44.559 [http-bio-8080-exec-6] TRACE o.s.w.m.s.HandlerMethodArgumentResolverComposite - Testing if argument resolver [org.springframework.web.servlet.mvc.method.annotation.HttpEntityMethodProcessor@7e1194af] supports [interface org.springframework.validation.BindingResult]
14:06:44.559 [http-bio-8080-exec-6] TRACE o.s.w.m.s.HandlerMethodArgumentResolverComposite - Testing if argument resolver [org.springframework.web.servlet.mvc.method.annotation.RedirectAttributesMethodArgumentResolver@14a6f81a] supports [interface org.springframework.validation.BindingResult]
14:06:44.559 [http-bio-8080-exec-6] TRACE o.s.w.m.s.HandlerMethodArgumentResolverComposite - Testing if argument resolver [org.springframework.web.method.annotation.ModelMethodProcessor@4fa50c24] supports [interface org.springframework.validation.BindingResult]
14:06:44.559 [http-bio-8080-exec-6] TRACE o.s.w.m.s.HandlerMethodArgumentResolverComposite - Testing if argument resolver [org.springframework.web.method.annotation.MapMethodProcessor@6cf83e3c] supports [interface org.springframework.validation.BindingResult]
14:06:44.559 [http-bio-8080-exec-6] TRACE o.s.w.m.s.HandlerMethodArgumentResolverComposite - Testing if argument resolver [org.springframework.web.method.annotation.ErrorsMethodArgumentResolver@1e3e6be0] supports [interface org.springframework.validation.BindingResult]
14:06:44.559 [http-bio-8080-exec-6] TRACE o.s.w.m.s.HandlerMethodReturnValueHandlerComposite - Testing if return value handler [org.springframework.web.servlet.mvc.method.annotation.ModelAndViewMethodReturnValueHandler@2f504468] supports [class java.lang.String]
14:06:44.559 [http-bio-8080-exec-6] TRACE o.s.w.m.s.HandlerMethodReturnValueHandlerComposite - Testing if return value handler [org.springframework.web.method.annotation.ModelMethodProcessor@8e63aaf] supports [class java.lang.String]
14:06:44.559 [http-bio-8080-exec-6] TRACE o.s.w.m.s.HandlerMethodReturnValueHandlerComposite - Testing if return value handler [org.springframework.web.servlet.mvc.method.annotation.ViewMethodReturnValueHandler@37bf1fd4] supports [class java.lang.String]
14:06:44.559 [http-bio-8080-exec-6] TRACE o.s.w.m.s.HandlerMethodReturnValueHandlerComposite - Testing if return value handler [org.springframework.web.servlet.mvc.method.annotation.HttpEntityMethodProcessor@4351dda1] supports [class java.lang.String]
14:06:44.560 [http-bio-8080-exec-6] TRACE o.s.w.m.s.HandlerMethodReturnValueHandlerComposite - Testing if return value handler [org.springframework.web.method.annotation.ModelAttributeMethodProcessor@4673cae7] supports [class java.lang.String]
14:06:44.560 [http-bio-8080-exec-6] TRACE o.s.w.m.s.HandlerMethodReturnValueHandlerComposite - Testing if return value handler [org.springframework.web.servlet.mvc.method.annotation.RequestResponseBodyMethodProcessor@3dfb2615] supports [class java.lang.String]
14:06:44.563 [http-bio-8080-exec-6] TRACE o.s.w.m.s.HandlerMethodReturnValueHandlerComposite - Testing if return value handler [org.springframework.web.servlet.mvc.method.annotation.ViewNameMethodReturnValueHandler@7edf47aa] supports [class java.lang.String]
14:06:44.564 [http-bio-8080-exec-6] TRACE o.s.w.m.s.InvocableHandlerMethod - Invoking [countries] method with arguments [en_US]
14:06:44.565 [http-bio-8080-exec-6] TRACE o.s.w.m.s.InvocableHandlerMethod - Method [countries] returned [{=, AE=United Arab Emirates, AL=Albania, AR=Argentina, AT=Austria, AU=Australia, BA=Bosnia and Herzegovina, BE=Belgium, BG=Bulgaria, BH=Bahrain, BO=Bolivia, BR=Brazil, BY=Belarus, CA=Canada, CH=Switzerland, CL=Chile, CN=China, CO=Colombia, CR=Costa Rica, CS=Serbia and Montenegro, CU=Cuba, CY=Cyprus, CZ=Czech Republic, DE=Germany, DK=Denmark, DO=Dominican Republic, DZ=Algeria, EC=Ecuador, EE=Estonia, EG=Egypt, ES=Spain, FI=Finland, FR=France, GB=United Kingdom, GR=Greece, GT=Guatemala, HK=Hong Kong, HN=Honduras, HR=Croatia, HU=Hungary, ID=Indonesia, IE=Ireland, IL=Israel, IN=India, IQ=Iraq, IS=Iceland, IT=Italy, JO=Jordan, JP=Japan, KR=South Korea, KW=Kuwait, LB=Lebanon, LT=Lithuania, LU=Luxembourg, LV=Latvia, LY=Libya, MA=Morocco, ME=Montenegro, MK=Macedonia, MT=Malta, MX=Mexico, MY=Malaysia, NI=Nicaragua, NL=Netherlands, NO=Norway, NZ=New Zealand, OM=Oman, PA=Panama, PE=Peru, PH=Philippines, PL=Poland, PR=Puerto Rico, PT=Portugal, PY=Paraguay, QA=Qatar, RO=Romania, RS=Serbia, RU=Russia, SA=Saudi Arabia, SD=Sudan, SE=Sweden, SG=Singapore, SI=Slovenia, SK=Slovakia, SV=El Salvador, SY=Syria, TH=Thailand, TN=Tunisia, TR=Turkey, TW=Taiwan, UA=Ukraine, US=United States, UY=Uruguay, VE=Venezuela, VN=Vietnam, YE=Yemen, ZA=South Africa}]
14:06:44.565 [http-bio-8080-exec-6] TRACE o.s.w.m.s.InvocableHandlerMethod - Invoking [initBinder] method with arguments [org.springframework.web.servlet.mvc.method.annotation.ExtendedServletRequestDataBinder@6256041a]
14:06:44.566 [http-bio-8080-exec-6] TRACE o.s.w.m.s.InvocableHandlerMethod - Method [initBinder] returned [null]
14:06:44.579 [http-bio-8080-exec-6] TRACE o.s.w.s.m.m.a.ServletInvocableHandlerMethod - Invoking [handleRegistration] method with arguments [com.apress.prospringmvc.bookstore.domain.Account@64f6614c, org.springframework.validation.BeanPropertyBindingResult: 1 errors
Field error in object 'account' on field 'dateOfBirth': rejected value [1999-01-01]; codes [typeMismatch.account.dateOfBirth,typeMismatch.dateOfBirth,typeMismatch.java.util.Date,typeMismatch]; arguments [org.springframework.context.support.DefaultMessageSourceResolvable: codes [account.dateOfBirth,dateOfBirth]; arguments []; default message [dateOfBirth]]; default message [Failed to convert property value of type 'java.lang.String' to required type 'java.util.Date' for property 'dateOfBirth'; nested exception is org.springframework.core.convert.ConversionFailedException: Failed to convert from type java.lang.String to type java.util.Date for value '1999-01-01'; nested exception is java.lang.IllegalArgumentException: Unable to parse '1999-01-01']]
14:06:44.579 [http-bio-8080-exec-6] TRACE o.s.w.s.m.m.a.ServletInvocableHandlerMethod - Method [handleRegistration] returned [customer/register]
14:06:44.583 [http-bio-8080-exec-6] DEBUG o.s.web.servlet.DispatcherServlet - Rendering view [org.springframework.web.servlet.view.tiles2.TilesView: name 'customer/register'; URL [customer/register]] in DispatcherServlet with name 'dispatcher'
14:06:44.584 [http-bio-8080-exec-6] TRACE o.s.w.servlet.view.tiles2.TilesView - Rendering view with name 'customer/register' with model {countries={=, AE=United Arab Emirates, AL=Albania, AR=Argentina, AT=Austria, AU=Australia, BA=Bosnia and Herzegovina, BE=Belgium, BG=Bulgaria, BH=Bahrain, BO=Bolivia, BR=Brazil, BY=Belarus, CA=Canada, CH=Switzerland, CL=Chile, CN=China, CO=Colombia, CR=Costa Rica, CS=Serbia and Montenegro, CU=Cuba, CY=Cyprus, CZ=Czech Republic, DE=Germany, DK=Denmark, DO=Dominican Republic, DZ=Algeria, EC=Ecuador, EE=Estonia, EG=Egypt, ES=Spain, FI=Finland, FR=France, GB=United Kingdom, GR=Greece, GT=Guatemala, HK=Hong Kong, HN=Honduras, HR=Croatia, HU=Hungary, ID=Indonesia, IE=Ireland, IL=Israel, IN=India, IQ=Iraq, IS=Iceland, IT=Italy, JO=Jordan, JP=Japan, KR=South Korea, KW=Kuwait, LB=Lebanon, LT=Lithuania, LU=Luxembourg, LV=Latvia, LY=Libya, MA=Morocco, ME=Montenegro, MK=Macedonia, MT=Malta, MX=Mexico, MY=Malaysia, NI=Nicaragua, NL=Netherlands, NO=Norway, NZ=New Zealand, OM=Oman, PA=Panama, PE=Peru, PH=Philippines, PL=Poland, PR=Puerto Rico, PT=Portugal, PY=Paraguay, QA=Qatar, RO=Romania, RS=Serbia, RU=Russia, SA=Saudi Arabia, SD=Sudan, SE=Sweden, SG=Singapore, SI=Slovenia, SK=Slovakia, SV=El Salvador, SY=Syria, TH=Thailand, TN=Tunisia, TR=Turkey, TW=Taiwan, UA=Ukraine, US=United States, UY=Uruguay, VE=Venezuela, VN=Vietnam, YE=Yemen, ZA=South Africa}, account=com.apress.prospringmvc.bookstore.domain.Account@64f6614c, org.springframework.validation.BindingResult.account=org.springframework.validation.BeanPropertyBindingResult: 1 errors
Field error in object 'account' on field 'dateOfBirth': rejected value [1999-01-01]; codes [typeMismatch.account.dateOfBirth,typeMismatch.dateOfBirth,typeMismatch.java.util.Date,typeMismatch]; arguments [org.springframework.context.support.DefaultMessageSourceResolvable: codes [account.dateOfBirth,dateOfBirth]; arguments []; default message [dateOfBirth]]; default message [Failed to convert property value of type 'java.lang.String' to required type 'java.util.Date' for property 'dateOfBirth'; nested exception is org.springframework.core.convert.ConversionFailedException: Failed to convert from type java.lang.String to type java.util.Date for value '1999-01-01'; nested exception is java.lang.IllegalArgumentException: Unable to parse '1999-01-01'], randomBooks=[com.apress.prospringmvc.bookstore.domain.Book@5d3dc8bb[
  title=Refactoring: Improving the Design of Existing Code
  author=Martin Fowler
  isbn=9780201485677
], com.apress.prospringmvc.bookstore.domain.Book@5528c285[
  title=Clean Code: A Handbook of Agile Software Craftsmanship
  author=Robert C. Martin
  isbn=9780132350884
]]} and static attributes {}

Answer 1

将此添加到您的控制器：

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

在这种情况下，为什么无法从字符串转换为日期？

1 个答案: