我玩了！ 2.2我升级到2.5的项目。但是，自升级以来，我遇到了数据库问题，看起来配置错误或遗漏。 似乎没有保存更改，并且表单也不起作用。
我在 application.conf ：
中声明了ebeans指令ebean.default= ["models.*"]
然后当然在plugins.sbt和build.sbt中加载模块。 我的代码示例，我有一个设备：
@Entity
public class Device extends Model {
@Id
public Long id;
@Constraints.Required
public String name;
@Constraints.Required
public String ipAddress;
@Constraints.Required
public String uniqueId;
@OneToMany(mappedBy="device")
public List<Sensor> sensors = new ArrayList<>();
@OneToMany(mappedBy="device")
public List<Action> actions = new ArrayList<>();
@OneToOne
public LogItem latestError;
@Version
public Timestamp lastUpdate;
public boolean debugMode;
public boolean statusLed;
public static Finder<Long, Device> find = new Finder<Long, Device>(
Long.class, Device.class
);
public List<ValidationError> validate() {
/*
List<ValidationError> errors = new ArrayList<ValidationError>();
if (User.byEmail(email) != null) {
errors.add(new ValidationError("email", "This e-mail is already registered."));
}
return errors.isEmpty() ? null : errors;
*/
return null;
}
}
这是我的控制者：
public static Result add() {
Form<Device> deviceForm = Form.form(Device.class);
return ok(editView.render(deviceForm, null));
}
这个模板：
@(deviceForm: Form[Device], device: Device)
@if(deviceForm.hasGlobalErrors) {
<ul>
@deviceForm.globalErrors.foreach { error =>
<li>error.message</li>
}
</ul>
}
@main("Edit a device") {
@if(deviceForm("id").value == "" || deviceForm("id").value == null) {
<h2>Add the device</h2>
} else {
<h2>Update the device</h2>
}
@helper.form(action = routes.Devices.update()) {
@helper.inputText(
deviceForm("name"),
'_label -> "Device name"
)
@helper.inputText(
deviceForm("ipAddress"),
'_label -> "IP Address"
)
@helper.inputText(
deviceForm("uniqueId"),
'_label -> "Unique ID"
)
@helper.checkbox(
deviceForm("statusLed"),
'_label -> "Status light"
)
@helper.checkbox(
deviceForm("debugMode"),
'_label -> "Debug mode"
)
@if(device != null){
<div>Sensors:</div>
<div>
<table class="adminTable">
@for(sensor <- device.sensors) {
<tr>
<td>@sensor.value</td>
<td><a href="@routes.Sensors.edit(sensor.id)">edit<a/> | <a href="@routes.Sensors.delete(sensor.id)">delete</a></td>
</tr>
}
</table>
</div>
}
@if(deviceForm("id").value != "" && deviceForm("id").value != null) { <div>Last updated: @device.lastUpdate.format("dd MMM yy - HH:mm:ss")</div> }
<div>
<input type="hidden" name="id" value="@deviceForm("id").value">
<input type="submit" value="Submit">
</div>
}
<a href="@routes.Devices.index()">Cancel</a>
}
当我填写所有字段并单击“提交”时，我收到以下错误：
[error] p.c.s.n.PlayDefaultUpstreamHandler - Cannot invoke the action
java.lang.IllegalStateException: JSR-303 validated property 'name' does not have a corresponding accessor for data binding - check your DataBinder's configuration (bean property versus direct field access)
at play.data.Form.bind(Form.java:372) ~[play-java_2.11-2.4.4.jar:2.4.4]
at play.data.Form.bindFromRequest(Form.java:222) ~[play-java_2.11-2.4.4.jar:2.4.4]
at controllers.Devices.update(Devices.java:44) ~[classes/:na]
at router.Routes$$anonfun$routes$1$$anonfun$applyOrElse$4$$anonfun$apply$4.apply(Routes.scala:558) ~[classes/:na]
at router.Routes$$anonfun$routes$1$$anonfun$applyOrElse$4$$anonfun$apply$4.apply(Routes.scala:558) ~[classes/:na]
at play.core.routing.HandlerInvokerFactory$$anon$4.resultCall(HandlerInvoker.scala:136) ~[play_2.11-2.4.4.jar:2.4.4]
at play.core.routing.HandlerInvokerFactory$JavaActionInvokerFactory$$anon$14$$anon$3$$anon$1.invocation(HandlerInvoker.scala:127) ~[play_2.11-2.4.4.jar:2.4.4]
at play.core.j.JavaAction$$anon$1.call(JavaAction.scala:70) ~[play_2.11-2.4.4.jar:2.4.4]
at play.GlobalSettings$1.call(GlobalSettings.java:67) ~[play_2.11-2.4.4.jar:2.4.4]
at play.core.j.JavaAction$$anonfun$7.apply(JavaAction.scala:94) ~[play_2.11-2.4.4.jar:2.4.4]
Caused by: org.springframework.beans.NotReadablePropertyException: Invalid property 'name' of bean class [models.Device]: Bean property 'name' is not readable or has an invalid getter method: Does the return type of the getter match the parameter type of the setter?
at org.springframework.beans.BeanWrapperImpl.getPropertyValue(BeanWrapperImpl.java:731) ~[spring-beans-4.1.6.RELEASE.jar:4.1.6.RELEASE]
at org.springframework.beans.BeanWrapperImpl.getPropertyValue(BeanWrapperImpl.java:722) ~[spring-beans-4.1.6.RELEASE.jar:4.1.6.RELEASE]
at org.springframework.validation.AbstractPropertyBindingResult.getActualFieldValue(AbstractPropertyBindingResult.java:99) ~[spring-context-4.1.6.RELEASE.jar:4.1.6.RELEASE]
at org.springframework.validation.AbstractBindingResult.rejectValue(AbstractBindingResult.java:108) ~[spring-context-4.1.6.RELEASE.jar:4.1.6.RELEASE]
at play.data.Form.bind(Form.java:366) ~[play-java_2.11-2.4.4.jar:2.4.4]
at play.data.Form.bindFromRequest(Form.java:222) ~[play-java_2.11-2.4.4.jar:2.4.4]
at controllers.Devices.update(Devices.java:44) ~[classes/:na]
at router.Routes$$anonfun$routes$1$$anonfun$applyOrElse$4$$anonfun$apply$4.apply(Routes.scala:558) ~[classes/:na]
at router.Routes$$anonfun$routes$1$$anonfun$applyOrElse$4$$anonfun$apply$4.apply(Routes.scala:558) ~[classes/:na]
at play.core.routing.HandlerInvokerFactory$$anon$4.resultCall(HandlerInvoker.scala:136) ~[play_2.11-2.4.4.jar:2.4.4]
[error] application -
我还有一个预先填充的记录，当我编辑它时，表单字段都是空的。但是，调试显示数据存在，并且从对象本身生成的列表“传感器”也会出现。
所以Play中的配置一定有问题！ 2.5，但我无法弄清楚是什么。
答案 0 :(得分：1)
这似乎是一个缓存问题。使用：
activator clean
activator clean-files
并重建项目解决了这个问题。