2015-04-02 268 views
1

我想对域类对象做一些验证,但是当我调用'validate'方法时,我得到一个奇怪的异常。我有一个表格,我输入一些数据: Html form 这里是我的表单代码:Grails验证不起作用

<body> 
<div id='register'> 
    <div class='inner'> 
     <div class='fheader'>Register</div> 

     <g:if test='${flash.message}'> 
      <div class='login_message'>${flash.message}</div> 
     </g:if> 

     <form action='<g:createLink controller="register" action="create" />' method='POST' id='registerForm' class='cssform' autocomplete='off'> 
      <p> 
       <label for='username'>Username:</label> 
       <input type='text' class='text_' name='username' id='username'/> 
      </p> 

      <p> 
       <label for='password'>Password:</label> 
       <input type='password' class='text_' name='password' id='password'/> 
      </p> 

      <p> 
       <label for='passwordConfirmation'>Confirm:</label> 
       <input type='password' class='text_' name='passwordConfirm' id='passwordConfirmation'/> 
      </p> 

      <p> 
       <input type='submit' id="submit" value='REGISTER'/> 
      </p> 
     </form> 
    </div> 
</div> 
</body> 

这里是我的控制器代码。接收POST的方法是'创建'。

package genealogicaltree 

import gentree.security.UserCommand 
import grails.converters.JSON 
import org.springframework.security.access.annotation.Secured 

@Secured('permitAll') 
class RegisterController { 

    static allowedMethods = [index:'GET', create:['POST']] 

    def springSecurityService 

    def index() { 
     render(view: 'register') 
    } 

    def create() { 
     def userCommand = new UserCommand(params) 
     if(userCommand.validate()) 
      render "valid" 
     else 
      render "invalid" 
    } 
} 

这里是我的域类看起来像:

class UserCommand{ 
    public String username 
    public String password 
    public String passwordConfirm 
    static constraints = { 
     username size: 6..15, blank: false 
     password size: 6..15, blank: false 
     passwordConfirm blank: false 
    } 
} 

使用调试我可以看到,从POST数据绑定到userCommand对象: enter image description here

不过,我得到这样的错误信息: enter image description here

这里是控制台输出:

Error | 
2015-04-02 15:41:57,180 [http-bio-8080-exec-7] ERROR errors.GrailsExceptionResolver - NotReadablePropertyException occurred when processing request: [POST] /GenealogicalTree/register/create - parameters: 
passwordConfirm: password 
username: username 
password: *** 
Invalid property 'username' of bean class [gentree.security.UserCommand]: Bean property 'username' is not readable or has an invalid getter method: Does the return type of the getter match the parameter type of the setter?. Stacktrace follows: 
Message: Invalid property 'username' of bean class [gentree.security.UserCommand]: Bean property 'username' is not readable or has an invalid getter method: Does the return type of the getter match the parameter type of the setter? 
    Line | Method 
->> 20 | create in genealogicaltree.RegisterController 
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 
| 198 | doFilter in grails.plugin.cache.web.filter.PageFragmentCachingFilter 
|  63 | doFilter in grails.plugin.cache.web.filter.AbstractFilter 
|  53 | doFilter in grails.plugin.springsecurity.web.filter.GrailsAnonymousAuthenticationFilter 
|  49 | doFilter in grails.plugin.springsecurity.web.authentication.RequestHolderAuthenticationFilter 
|  82 | doFilter in grails.plugin.springsecurity.web.authentication.logout.MutableLogoutFilter 
| 1145 | runWorker in java.util.concurrent.ThreadPoolExecutor 
| 615 | run  in java.util.concurrent.ThreadPoolExecutor$Worker 
^ 745 | run . . . in java.lang.Thread 

代码调用'userCommand.validate()'时引发异常。我不明白我在这里做错了什么。提前致谢!

+1

你有没有尝试添加getters和setter? – christopher 2015-04-02 20:51:56

+0

它的工作原理。 Grails不应该默认生成这些方法吗?如果我记住了正确的话,我可以为域类的对象调用setter和getters方法,而无需编写方法。我仍然在学习Grails,并且时不时地犯下愚蠢的错误。发布您的答案,以便我可以将其标记为正确的答案。 – Zan 2015-04-02 21:14:07

+0

您使用的是哪个版本的Grails? – christopher 2015-04-02 21:32:41

回答

1

您应该将getter和setter添加到您的域类中以删除此项。

默认情况下,Grails编译器将生成这些方法,例如。

myObject.myValue = "hello"; 

相同

myObject.setMyValue("hello"); 

然而,这显然是不完美的,你会得到这样的错误!如果您使用的是Grails版本< 2.3.2,那么这是一个已知的bug,并且它有一个Jira Issue,所以您可以通过升级您的Grails版本来解决它。

+0

事情是我正在使用Grails 2.4.4。这有点奇怪,但它工作,所以我很高兴。 – Zan 2015-04-02 21:38:57

+0

呃..是的,这很奇怪。也许你应该评论这个问题! – christopher 2015-04-02 21:46:42