0

我的模型

@Entity(name = "WORKFLOW_ROLE")
public class WorkflowRole extends GenericModel {

   @Id
   @Column(name = "IDNR", unique = true, nullable = false, precision = 22, scale = 0)
   @Required
   @Min(0)
   public long id;
}

我的控制器动作

public static void postNewRole(@Valid models.WorkflowRole role) {
    try
    {
      role.workflow = models.Workflow.findById(role.workflow.id);

      if (validation.hasErrors()) {
        params.flash(); // add http parameters to the flash scope
        validation.keep(); // keep the errors for the next request
        newRole();
      }

      role.create();
      flash.success("Rolle erstellt");
      index();
    }
    catch (Exception e)
    {
        params.flash();
        validation.keep();
        flash.put("error", e.getMessage());
        newRole();
    }
}

现在,如果我尝试将WorkflowRole.id作为字符串传递给我的表单,则会出现以下异常:

@6chopgia8
Internal Server Error (500) for request POST /workflowrole/postnewrole

Oops: UnexpectedException
An unexpected error occured caused by exception UnexpectedException: Unexpected Error

play.exceptions.UnexpectedException: Unexpected Error
    at play.data.validation.ValidationPlugin.beforeActionInvocation(ValidationPlugin.java:80)
    at play.plugins.PluginCollection.beforeActionInvocation(PluginCollection.java:639)
    at play.mvc.ActionInvoker.invoke(ActionInvoker.java:134)
    at Invocation.HTTP Request(Play!)
Caused by: play.exceptions.UnexpectedException: Unexpected Error
    at play.db.jpa.JPAPlugin.bind(JPAPlugin.java:84)
    at play.plugins.PluginCollection.bind(PluginCollection.java:579)
    at play.data.binding.Binder.bind(Binder.java:112)
    at play.mvc.ActionInvoker.getActionMethodArgs(ActionInvoker.java:651)
    at play.data.validation.ValidationPlugin$Validator.validateAction(ValidationPlugin.java:117)
    at play.data.validation.ValidationPlugin.beforeActionInvocation(ValidationPlugin.java:72)
    ... 3 more
Caused by: java.lang.NumberFormatException: For input string: "sdf"
    at java.lang.NumberFormatException.forInputString(NumberFormatException.java:48)
    at java.lang.Long.parseLong(Long.java:410)
    at java.lang.Long.parseLong(Long.java:468)
    at play.data.binding.Binder.internalDirectBind(Binder.java:612)
    at play.data.binding.Binder.directBind(Binder.java:529)
    at play.db.jpa.JPAPlugin.bind(JPAPlugin.java:76)
    ... 8 more

是否有人在 play 1.2.5 中遇到与通用模型绑定类似的问题?

4

2 回答 2

1

编辑:是的,这似乎是一个错误。补丁在这里:https ://gist.github.com/4242156


尝试将您的 ID 设为 Long 而不是 long - 我怀疑这就是活页夹崩溃的原因。原始变量有特殊的逻辑 - 我认为你的案例证明了一个错误。但是,我认为如果您切换到 Long 代码应该按预期工作。

通常,您应该避免使用数据库绑定对象的原始值,除非您可以 100% 确定数据库中没有空值。(但你的代码应该可以工作 - 所以有一个错误)

于 2012-12-08T16:12:35.737 回答
0

确保使用 POST 而不是 GET 定义路由。您应该发布完整的代码,以便更轻松地查明问题。

于 2012-12-08T07:44:19.457 回答