Итак, мой результат привязки выдает ошибку, но я по какой-то причине не могу ее увидеть и не могу понять, в чем проблема. Я предполагаю, что проблема заключается в переменной targetDate, где есть проблема типа. Я вставил свой контроллер и код JSP ниже. Любая помощь приветствуется!
@Controller
public class ToDoController {
@Autowired
private ToDoService service;
// All date parameters displayed as mm/DD/yyyy
@InitBinder
protected void initBinder(WebDataBinder binder) {
SimpleDateFormat dateFormat = new SimpleDateFormat("mm/DD/yyyy");
binder.registerCustomEditor(Date.class, new CustomDateEditor(
dateFormat, false));
}
@RequestMapping(value = "/list-todo", method= RequestMethod.GET)
// HttpSession allows access to the session
public String showToDo(ModelMap model, HttpSession httpSession) {
String user = (String) httpSession.getAttribute("name");
model.addAttribute("todos", service.retrieveTodos(user));
return "list-todos";
}
// redirect to update form
@RequestMapping(value = "/update-todo", method= RequestMethod.GET)
public String getUpdateForm(ModelMap model, @RequestParam int id) {
System.out.println("ID " + id);
// To work with command bean
model.addAttribute("id", id);
model.addAttribute("todo", service.retrieveTodo(id-1));
return "updateToDo";
}
// What does Valid do?
@RequestMapping(value = "/update-todo", method= RequestMethod.POST)
public String submitUpdate(ModelMap model, @Valid ToDo todo, BindingResult result) {
if (result.hasErrors()) {
System.out.println("ERROR" + result.getAllErrors());
// Redirect and pass on the id value
return "redirect:/update-todo?id=" + todo.getId();
}
System.out.println("Update todo" + todo);
service.updateToDo(todo);
model.clear();
return "redirect:/list-todo";
}
// Will be executed first
@RequestMapping(value = "/add-todo", method= RequestMethod.GET)
public String showAddForm(ModelMap model) {
model.addAttribute("todo", new ToDo());
return "addToDo";
}
/*
* Will be executed after form is submitted
* @Valid ToDo - command bean from addToDo.jsp.
* @Valid to validate the information
* @BindingResult showcases the result of the validation
*/
@RequestMapping(value = "/add-todo", method= RequestMethod.POST)
public String submitAddForm(ModelMap model , @Valid ToDo todo, HttpSession httpSession, BindingResult result) {
System.out.println("running" + result);
// If there is validation error , return to addToDos page for user to fix the error
if (result.hasErrors()) {
return "redirect:/showAddForm?id=?" + todo.getId();
}
String user = (String) httpSession.getAttribute("name");
service.addTodo(user, todo.getDescription(), todo.getTargetDate(), false);
// Clears the url e.g. name?=jyj123
model.clear();
// return to the url which executes the showToDO
return "redirect:/list-todo";
}
// delete to do entry
@RequestMapping(value = "/delete-todo", method= RequestMethod.GET)
public String deleteToDo(ModelMap model, @RequestParam int id) {
service.deleteTodo(id);
model.clear();
return "redirect:/list-todo"; }
}
My JSP
<%@ taglib prefix="spring" uri="http://www.springframework.org/tags" %>
<%@ include file = "common/header.jspf" %>
<%@ include file = "common/nav.jspf" %>
<div class="container">
<H1>Update your task!</H1>
<form:form method="POST" commandName="todo">
<!-- Carry on the id value -->
<form:hidden path = "id"/>
<form:hidden path = "user"/>
<fieldset class="form-group">
<form:label path="description">Description:</form:label>
<form:input path="description" type="text" class="form-control"
required="required" />
<form:errors path="description" cssClass="text-warning" />
</fieldset>
<fieldset class="form-group">
<form:label path="targetDate">Target Date</form:label>
<form:input path="targetDate" type="text" class="form-control"
required="required" />
<form:errors path="targetDate" cssClass="text-warning" />
</fieldset>
<fieldset class="form-group">
<form:radiobutton path="completion" value="true" />
<form:radiobutton path="completion" value="false" />
</fieldset>
<button type="submit" class="btn btn-success" >Submit Update</button>
</form:form>
<spring:hasBindErrors htmlEscape="true" name="todo">
<c:if test="${errors.errorCount gt 0}">
<h4>The error list :</h4>
<font color="red">
<c:forEach items="${errors.allErrors}" var="error">
<spring:message code="${error.code}"
arguments="${error.arguments}"
text="${error.defaultMessage}"/><br/>
</c:forEach>
</font>
</c:if>
</spring:hasBindErrors>
</div>
<%@ include file = "common/footer.jspf" %>
EDIT: bindingresult выбрасывает это
ERROR[Field error in object 'todo' on field 'targetDate': rejected value [Tue Jan 05 00:00:00 SGT 2021]; codes [typeMismatch.todo.targetDate,typeMismatch.targetDate,typeMismatch.java.util.Date,typeMismatch]; arguments [org.springframework.context.support.DefaultMessageSourceResolvable: codes [todo.targetDate,targetDate]; arguments []; default message [targetDate]]; default message [Failed to convert property value of type 'java.lang.String' to required type 'java.util.Date' for property 'targetDate'; nested exception is org.springframework.core.convert.ConversionFailedException: Failed to convert from type [java.lang.String] to type [java.util.Date] for value 'Tue Jan 05 00:00:00 SGT 2021'; nested exception is java.lang.IllegalArgumentException]]