Required request parameter ‘xxxx‘ for method parameter type Date is present but converted to null

问题

前端请求字段中含时间戳数据

请求报错如下：

 [http-nio-9071-exec-2] ERROR c.m.c.s.h.GlobalExceptionHandler - [handleException,62] - Required request parameter 'xxxx' for method parameter type Date is present but converted to null
org.springframework.web.bind.MissingServletRequestParameterException: Required request parameter 'xxxx' for method parameter type Date is present but converted to nullat org.springframework.web.method.annotation.RequestParamMethodArgumentResolver.handleMissingValueInternal(RequestParamMethodArgumentResolver.java:218)at org.springframework.web.method.annotation.RequestParamMethodArgumentResolver.handleMissingValueAfterConversion(RequestParamMethodArgumentResolver.java:200)at org.springframework.web.method.annotation.AbstractNamedValueMethodArgumentResolver.resolveArgument(AbstractNamedValueMethodArgumentResolver.java:138)at org.springframework.web.method.support.HandlerMethodArgumentResolverComposite.resolveArgument(HandlerMethodArgumentResolverComposite.java:121)at org.springframework.web.method.support.InvocableHandlerMethod.getMethodArgumentValues(InvocableHandlerMethod.java:179)at org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:146)at org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:117)at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandlerMethod(RequestMappingHandlerAdapter.java:895)at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:808)at org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:87)at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:1067)at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:963)at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:1006)at org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:898)at javax.servlet.http.HttpServlet.service(HttpServlet.java:645)at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:883)at javax.servlet.http.HttpServlet.service(HttpServlet.java:750)at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:227)at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162)at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:53)at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189)at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162)at org.springframework.web.filter.RequestContextFilter.doFilterInternal(RequestContextFilter.java:100)at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:117)at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189)at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162)at org.springframework.web.filter.FormContentFilter.doFilterInternal(FormContentFilter.java:93)at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:117)at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189)at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162)at org.springframework.boot.actuate.metrics.web.servlet.WebMvcMetricsFilter.doFilterInternal(WebMvcMetricsFilter.java:96)at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:117)at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189)at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162)at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:201)at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:117)at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189)at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162)at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:197)at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:97)at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:540)at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:135)at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:92)at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:78)at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:357)at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:382)at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:65)at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:895)at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1732)at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49)at org.apache.tomcat.util.threads.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1191)at org.apache.tomcat.util.threads.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:659)at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)at java.lang.Thread.run(Thread.java:745)

排查

通过报错得知项目中有参数绑定解析，若无会报String转换Date异常

@InitBinder
public void initBinder(WebDataBinder binder)
{// Date 类型转换binder.registerCustomEditor(Date.class, new PropertyEditorSupport(){@Overridepublic void setAsText(String text){setValue(DateUtils.parseDate(text));}});
}

private static String[] parsePatterns = {"yyyy-MM-dd", "yyyy-MM-dd HH:mm:ss", "yyyy-MM-dd HH:mm", "yyyy-MM", "yyyy/MM/dd", "yyyy/MM/dd HH:mm:ss", "yyyy/MM/dd HH:mm", "yyyy/MM","yyyy.MM.dd", "yyyy.MM.dd HH:mm:ss", "yyyy.MM.dd HH:mm", "yyyy.MM"};public static Date parseDate(Object str)
{if (str == null){return null;}try{return parseDate(str.toString(), parsePatterns);}catch (ParseException e){return null;}
}

解决

方式（1）加入时间戳转换

@InitBinder
public void initBinder(WebDataBinder binder)
{// Date 类型转换binder.registerCustomEditor(Date.class, new PropertyEditorSupport(){@Overridepublic void setAsText(String text){try {setValue(DateUtils.parseDate(text));} catch (ParseException e) {long textLong = Long.parseLong(text);setValue(new Date(textLong));}}});
}

方式（2）日期参数转换器

@Configuration
public class DateConfiguration {@Beanpublic Formatter<Date> localDateFormatter() {return new Formatter<Date>() {@Overridepublic Date parse(String text, Locale locale) throws ParseException {Date d;try {d = DateUtils.parseDateStrictly(text,new String[] {"yyyy-MM-dd HH:mm:ss", "yyyy-MM-dd","yyyy/MM/dd HH:ss:ss", "HH:mm:ss"});} catch (ParseException e) {if (StringUtils.isNotEmpty(text)) {long textLong = Long.parseLong(text);d = new Date(textLong);}else {d = null;}}return d;}@Overridepublic String print(Date date, Locale locale) {return DateFormatUtils.format(date,"yyyy-MM-dd HH:mm:ss");}};}
}

注：若使用了@InitBinder，Spring会优先使用该方式进行处理，即方式（2）不生效，源码如下：

@Nullable
public <T> T convertIfNecessary(@Nullable String propertyName, @Nullable Object oldValue, @Nullable Object newValue, @Nullable Class<T> requiredType, @Nullable TypeDescriptor typeDescriptor) throws IllegalArgumentException {PropertyEditor editor = this.propertyEditorRegistry.findCustomEditor(requiredType, propertyName);ConversionFailedException conversionAttemptEx = null;ConversionService conversionService = this.propertyEditorRegistry.getConversionService();if (editor == null && conversionService != null && newValue != null && typeDescriptor != null) {TypeDescriptor sourceTypeDesc = TypeDescriptor.forObject(newValue);if (conversionService.canConvert(sourceTypeDesc, typeDescriptor)) {try {return conversionService.convert(newValue, sourceTypeDesc, typeDescriptor);} catch (ConversionFailedException var14) {conversionAttemptEx = var14;}}}Object convertedValue = newValue;if (editor != null || requiredType != null && !ClassUtils.isAssignableValue(requiredType, newValue)) {if (typeDescriptor != null && requiredType != null && Collection.class.isAssignableFrom(requiredType) && newValue instanceof String) {TypeDescriptor elementTypeDesc = typeDescriptor.getElementTypeDescriptor();if (elementTypeDesc != null) {Class<?> elementType = elementTypeDesc.getType();if (Class.class == elementType || Enum.class.isAssignableFrom(elementType)) {convertedValue = StringUtils.commaDelimitedListToStringArray((String)newValue);}}}if (editor == null) {editor = this.findDefaultEditor(requiredType);}convertedValue = this.doConvertValue(oldValue, convertedValue, requiredType, editor);}...

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Required request parameter ‘xxxx‘ for method parameter type Date is present but converted to null

问题

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解决

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