无法将 java.lang.String 类型的属性值转换为所需的 java.util.Date 类型
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Failed to convert property value of type java.lang.String to required type java.util.Date
提问by Joe
I'm getting this error when I try to input a date in a form.
当我尝试在表单中输入日期时出现此错误。
TaskController
任务控制器
@RequestMapping(value = "/docreatetask", method = RequestMethod.POST)
public String doCreateTask(Model model, @Valid Task task,
BindingResult result, Principal principal,
@RequestParam(value = "delete", required = false) String delete) {
System.out.println(">TaskController doCreateTask " + task);
if (result.hasErrors()) {
System.out.println("/docreatetask in here");
model.addAttribute("task", task);
System.out.println("+++++"+task.getDeadline());// deadline is null
return "createtask";
}
...
Create.jsp
创建.jsp
...
<form:form method="POST"
action="${pageContext.request.contextPath}/docreatetask"
commandName="task">
<table class="formtable">
<tr>
<td class="label">Task</td>
<td><form:input cssClass="control" path="taskname"
name="taskname" type="text" /><br />
<form:errors path="taskname" cssClass="error" /></td>
</tr>
<tr>
<td class="label">Description</td>
<td><form:textarea cssClass="control" path="description"
name="description"></form:textarea><br />
<form:errors path="description" cssClass="error" /></td>
</tr>
<tr>
<td class="label">Deadline (dd/mm/yyyy)</td>
<td><form:input cssClass="control" path="deadline"
name="deadline" type="date" /><br />
<form:errors path="deadline" cssClass="error"></form:errors></td>
</tr>
...
In the controller I wrote the following with the same error (and different formats like "yyyy/MM/dd")
在控制器中，我写了以下相同的错误（以及不同的格式，如“yyyy/MM/dd”）
@InitBinder
public void initBinder(WebDataBinder webDataBinder) {
SimpleDateFormat dateFormat = new SimpleDateFormat("dd/MM/yyyy");
dateFormat.setLenient(false);
webDataBinder.registerCustomEditor(Date.class, new CustomDateEditor(dateFormat, true));
}
I also tried to add annotation in class (as well with different formats) but same error
我还尝试在类中添加注释（以及不同的格式）但同样的错误
? ...
@Column(name = "deadline")
@DateTimeFormat(pattern = "dd/MM/yyyy")
private Date deadline;
...
回答by borjab
Add this in the controller. Change the dateFormat to your locale preference.
在控制器中添加这个。将 dateFormat 更改为您的区域设置首选项。
@InitBinder
public void initBinder(WebDataBinder binder){
binder.registerCustomEditor( Date.class,
new CustomDateEditor(new SimpleDateFormat("dd/MM/yyyy"), true, 10));
}
Consider using this annotations in your model (Adapting format and TemporalType for your preferences)
考虑在您的模型中使用此注释（根据您的喜好调整格式和 TemporalType）
@DateTimeFormat(pattern = "dd/MM/yyyy")
@Temporal(TemporalType.DATE)
回答by xXxlazharxXx
simply add @DateTimeFormat(pattern = "yyyy-MM-dd") with (-)
只需添加 @DateTimeFormat(pattern = "yyyy-MM-dd") 和 (-)
example:
例子：
@DateTimeFormat(pattern = "yyyy-MM-dd")
private Date dateNaissance;
回答by WLiu
You need to change in BaseController for initBinder
您需要在 BaseController 中更改 initBinder
@InitBinder
protected void initBinder(HttpServletRequest request, ServletRequestDataBinder binder) {
SimpleDateFormat dateFormat = new SimpleDateFormat("dd/MM/yyyy");
dateFormat.setLenient(false);
binder.registerCustomEditor(Date.class, null, new CustomDateEditor(dateFormat, true));
}
