Today do springbook project database front-end input passed to date to save a bit error report
Whitelabel Error Page
This application has no explicit mapping for /error, so you are seeing this as a fallback.
Sun Feb 09 16:31:32 CST 2020
There was an unexpected error (type=Bad Request, status=400).
Validation failed for object='book'. Error count: 1
org.springframework.validation.BindException: org.springframework.validation.BeanPropertyBindingResult: 1 errors Field error in object 'book' on field 'bookDate': rejected value [2020-02-06]; codes [typeMismatch.book.bookDate,typeMismatch.bookDate,typeMismatch.java.util.Date,typeMismatch]; arguments [org.springframework.context.support.DefaultMessageSourceResolvable: codes [book.bookDate,bookDate]; arguments []; default message [bookDate]]; default message [Failed to convert value of type 'java.lang.String[]' to required type 'java.util.Date'; nested exception is org.springframework.core.convert.ConversionFailedException: Failed to convert from type [java.lang.String] to type [java.util.Date] for value '2020-02-06'; nested exception is java.lang.IllegalArgumentException] at org.springframework.web.method.annotation.ModelAttributeMethodProcessor.constructAttribute(ModelAttributeMethodProcessor.java:317) at org.springframework.web.method.annotation.ModelAttributeMethodProcessor.createAttribute(ModelAttributeMethodProcessor.java:224) at org.springframework.web.servlet.mvc.method.annotation.ServletModelAttributeMethodProcessor.createAttribute(ServletModelAttributeMethodProcessor.java:85) at org.springframework.web.method.annotation.ModelAttributeMethodProcessor.resolveArgument(ModelAttributeMethodProcessor.java:139) at org.springframework.web.method.support.HandlerMethodArgumentResolverComposite.resolveArgument(HandlerMethodArgumentResolverComposite.java:127) at org.springframework.web.method.support.InvocableHandlerMethod.getMethodArgumentValues(InvocableHandlerMethod.java:167) at org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:134)。。。
Front-end code:
<form th:action="@{/toAdd}"> <h2>添加图书信息</h2> 书名:<input type="text" name="bookName"/><br/> 简介:<input type="text" name="bookNote"/><br/> 作者:<input type="text" name="bookAuthor"/><br/>of the typethe INPUT< Price:="text" name="bookMoney"/><br/> 出版日期:<input type="date" name="bookDate"/><br/> <input type="submit" value="添加"/> </form>
database:
Baidu said the method is similar to that add the code in the corresponding controller in
@InitBinder protected void initBinder(WebDataBinder binder) { SimpleDateFormat dateFormat = new SimpleDateFormat("yyyy-MM-dd"); binder.registerCustomEditor(Date.class, new CustomDateEditor(dateFormat, true)); }
I tried really can!
code show as below:
@RequestMapping("/toAdd") public String toAdd(Book book,Model model) { bookService.addBook(book); return "redirect:/toQueryAll"; } @InitBinder protected void initBinder(WebDataBinder binder) { SimpleDateFormat dateFormat = new SimpleDateFormat("yyyy-MM-dd"); binder.registerCustomEditor(Date.class, new CustomDateEditor(dateFormat, true)); }
Note here
Date.class is
import java.util.Date; the packet